/*
 * Copyright 2012 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *      Christian König <christian.koenig@amd.com>
 */

#include "si_pipe.h"
#include "sid.h"
#include "radeon/r600_cs.h"
#include "radeon/r600_query.h"

#include "util/u_dual_blend.h"
#include "util/u_format.h"
#include "util/u_format_s3tc.h"
#include "util/u_memory.h"
#include "util/u_resource.h"

/* Initialize an external atom (owned by ../radeon). */
static void
si_init_external_atom(struct si_context *sctx, struct r600_atom *atom,
		      struct r600_atom **list_elem)
{
	atom->id = list_elem - sctx->atoms.array + 1;
	*list_elem = atom;
}

/* Initialize an atom owned by radeonsi.  */
void si_init_atom(struct si_context *sctx, struct r600_atom *atom,
		  struct r600_atom **list_elem,
		  void (*emit_func)(struct si_context *ctx, struct r600_atom *state))
{
	atom->emit = (void*)emit_func;
	atom->id = list_elem - sctx->atoms.array + 1; /* index+1 in the atom array */
	*list_elem = atom;
}

static unsigned si_map_swizzle(unsigned swizzle)
{
	switch (swizzle) {
	case PIPE_SWIZZLE_Y:
		return V_008F0C_SQ_SEL_Y;
	case PIPE_SWIZZLE_Z:
		return V_008F0C_SQ_SEL_Z;
	case PIPE_SWIZZLE_W:
		return V_008F0C_SQ_SEL_W;
	case PIPE_SWIZZLE_0:
		return V_008F0C_SQ_SEL_0;
	case PIPE_SWIZZLE_1:
		return V_008F0C_SQ_SEL_1;
	default: /* PIPE_SWIZZLE_X */
		return V_008F0C_SQ_SEL_X;
	}
}

static uint32_t S_FIXED(float value, uint32_t frac_bits)
{
	return value * (1 << frac_bits);
}

/* 12.4 fixed-point */
static unsigned si_pack_float_12p4(float x)
{
	return x <= 0    ? 0 :
	       x >= 4096 ? 0xffff : x * 16;
}

/*
 * Inferred framebuffer and blender state.
 *
 * CB_TARGET_MASK is emitted here to avoid a hang with dual source blending
 * if there is not enough PS outputs.
 */
static void si_emit_cb_render_state(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	struct si_state_blend *blend = sctx->queued.named.blend;
	/* CB_COLORn_INFO.FORMAT=INVALID should disable unbound colorbuffers,
	 * but you never know. */
	uint32_t cb_target_mask = sctx->framebuffer.colorbuf_enabled_4bit;
	unsigned i;

	if (blend)
		cb_target_mask &= blend->cb_target_mask;

	/* Avoid a hang that happens when dual source blending is enabled
	 * but there is not enough color outputs. This is undefined behavior,
	 * so disable color writes completely.
	 *
	 * Reproducible with Unigine Heaven 4.0 and drirc missing.
	 */
	if (blend && blend->dual_src_blend &&
	    sctx->ps_shader.cso &&
	    (sctx->ps_shader.cso->info.colors_written & 0x3) != 0x3)
		cb_target_mask = 0;

	radeon_set_context_reg(cs, R_028238_CB_TARGET_MASK, cb_target_mask);

	/* STONEY-specific register settings. */
	if (sctx->b.family == CHIP_STONEY) {
		unsigned spi_shader_col_format =
			sctx->ps_shader.cso ?
			sctx->ps_shader.current->key.part.ps.epilog.spi_shader_col_format : 0;
		unsigned sx_ps_downconvert = 0;
		unsigned sx_blend_opt_epsilon = 0;
		unsigned sx_blend_opt_control = 0;

		for (i = 0; i < sctx->framebuffer.state.nr_cbufs; i++) {
			struct r600_surface *surf =
				(struct r600_surface*)sctx->framebuffer.state.cbufs[i];
			unsigned format, swap, spi_format, colormask;
			bool has_alpha, has_rgb;

			if (!surf)
				continue;

			format = G_028C70_FORMAT(surf->cb_color_info);
			swap = G_028C70_COMP_SWAP(surf->cb_color_info);
			spi_format = (spi_shader_col_format >> (i * 4)) & 0xf;
			colormask = (cb_target_mask >> (i * 4)) & 0xf;

			/* Set if RGB and A are present. */
			has_alpha = !G_028C74_FORCE_DST_ALPHA_1(surf->cb_color_attrib);

			if (format == V_028C70_COLOR_8 ||
			    format == V_028C70_COLOR_16 ||
			    format == V_028C70_COLOR_32)
				has_rgb = !has_alpha;
			else
				has_rgb = true;

			/* Check the colormask and export format. */
			if (!(colormask & (PIPE_MASK_RGBA & ~PIPE_MASK_A)))
				has_rgb = false;
			if (!(colormask & PIPE_MASK_A))
				has_alpha = false;

			if (spi_format == V_028714_SPI_SHADER_ZERO) {
				has_rgb = false;
				has_alpha = false;
			}

			/* Disable value checking for disabled channels. */
			if (!has_rgb)
				sx_blend_opt_control |= S_02875C_MRT0_COLOR_OPT_DISABLE(1) << (i * 4);
			if (!has_alpha)
				sx_blend_opt_control |= S_02875C_MRT0_ALPHA_OPT_DISABLE(1) << (i * 4);

			/* Enable down-conversion for 32bpp and smaller formats. */
			switch (format) {
			case V_028C70_COLOR_8:
			case V_028C70_COLOR_8_8:
			case V_028C70_COLOR_8_8_8_8:
				/* For 1 and 2-channel formats, use the superset thereof. */
				if (spi_format == V_028714_SPI_SHADER_FP16_ABGR ||
				    spi_format == V_028714_SPI_SHADER_UINT16_ABGR ||
				    spi_format == V_028714_SPI_SHADER_SINT16_ABGR) {
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_8_8_8_8 << (i * 4);
					sx_blend_opt_epsilon |= V_028758_8BIT_FORMAT << (i * 4);
				}
				break;

			case V_028C70_COLOR_5_6_5:
				if (spi_format == V_028714_SPI_SHADER_FP16_ABGR) {
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_5_6_5 << (i * 4);
					sx_blend_opt_epsilon |= V_028758_6BIT_FORMAT << (i * 4);
				}
				break;

			case V_028C70_COLOR_1_5_5_5:
				if (spi_format == V_028714_SPI_SHADER_FP16_ABGR) {
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_1_5_5_5 << (i * 4);
					sx_blend_opt_epsilon |= V_028758_5BIT_FORMAT << (i * 4);
				}
				break;

			case V_028C70_COLOR_4_4_4_4:
				if (spi_format == V_028714_SPI_SHADER_FP16_ABGR) {
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_4_4_4_4 << (i * 4);
					sx_blend_opt_epsilon |= V_028758_4BIT_FORMAT << (i * 4);
				}
				break;

			case V_028C70_COLOR_32:
				if (swap == V_0280A0_SWAP_STD &&
				    spi_format == V_028714_SPI_SHADER_32_R)
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_32_R << (i * 4);
				else if (swap == V_0280A0_SWAP_ALT_REV &&
					 spi_format == V_028714_SPI_SHADER_32_AR)
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_32_A << (i * 4);
				break;

			case V_028C70_COLOR_16:
			case V_028C70_COLOR_16_16:
				/* For 1-channel formats, use the superset thereof. */
				if (spi_format == V_028714_SPI_SHADER_UNORM16_ABGR ||
				    spi_format == V_028714_SPI_SHADER_SNORM16_ABGR ||
				    spi_format == V_028714_SPI_SHADER_UINT16_ABGR ||
				    spi_format == V_028714_SPI_SHADER_SINT16_ABGR) {
					if (swap == V_0280A0_SWAP_STD ||
					    swap == V_0280A0_SWAP_STD_REV)
						sx_ps_downconvert |= V_028754_SX_RT_EXPORT_16_16_GR << (i * 4);
					else
						sx_ps_downconvert |= V_028754_SX_RT_EXPORT_16_16_AR << (i * 4);
				}
				break;

			case V_028C70_COLOR_10_11_11:
				if (spi_format == V_028714_SPI_SHADER_FP16_ABGR) {
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_10_11_11 << (i * 4);
					sx_blend_opt_epsilon |= V_028758_11BIT_FORMAT << (i * 4);
				}
				break;

			case V_028C70_COLOR_2_10_10_10:
				if (spi_format == V_028714_SPI_SHADER_FP16_ABGR) {
					sx_ps_downconvert |= V_028754_SX_RT_EXPORT_2_10_10_10 << (i * 4);
					sx_blend_opt_epsilon |= V_028758_10BIT_FORMAT << (i * 4);
				}
				break;
			}
		}

		if (sctx->screen->b.debug_flags & DBG_NO_RB_PLUS) {
			sx_ps_downconvert = 0;
			sx_blend_opt_epsilon = 0;
			sx_blend_opt_control = 0;
		}

		radeon_set_context_reg_seq(cs, R_028754_SX_PS_DOWNCONVERT, 3);
		radeon_emit(cs, sx_ps_downconvert);	/* R_028754_SX_PS_DOWNCONVERT */
		radeon_emit(cs, sx_blend_opt_epsilon);	/* R_028758_SX_BLEND_OPT_EPSILON */
		radeon_emit(cs, sx_blend_opt_control);	/* R_02875C_SX_BLEND_OPT_CONTROL */
	}
}

/*
 * Blender functions
 */

static uint32_t si_translate_blend_function(int blend_func)
{
	switch (blend_func) {
	case PIPE_BLEND_ADD:
		return V_028780_COMB_DST_PLUS_SRC;
	case PIPE_BLEND_SUBTRACT:
		return V_028780_COMB_SRC_MINUS_DST;
	case PIPE_BLEND_REVERSE_SUBTRACT:
		return V_028780_COMB_DST_MINUS_SRC;
	case PIPE_BLEND_MIN:
		return V_028780_COMB_MIN_DST_SRC;
	case PIPE_BLEND_MAX:
		return V_028780_COMB_MAX_DST_SRC;
	default:
		R600_ERR("Unknown blend function %d\n", blend_func);
		assert(0);
		break;
	}
	return 0;
}

static uint32_t si_translate_blend_factor(int blend_fact)
{
	switch (blend_fact) {
	case PIPE_BLENDFACTOR_ONE:
		return V_028780_BLEND_ONE;
	case PIPE_BLENDFACTOR_SRC_COLOR:
		return V_028780_BLEND_SRC_COLOR;
	case PIPE_BLENDFACTOR_SRC_ALPHA:
		return V_028780_BLEND_SRC_ALPHA;
	case PIPE_BLENDFACTOR_DST_ALPHA:
		return V_028780_BLEND_DST_ALPHA;
	case PIPE_BLENDFACTOR_DST_COLOR:
		return V_028780_BLEND_DST_COLOR;
	case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
		return V_028780_BLEND_SRC_ALPHA_SATURATE;
	case PIPE_BLENDFACTOR_CONST_COLOR:
		return V_028780_BLEND_CONSTANT_COLOR;
	case PIPE_BLENDFACTOR_CONST_ALPHA:
		return V_028780_BLEND_CONSTANT_ALPHA;
	case PIPE_BLENDFACTOR_ZERO:
		return V_028780_BLEND_ZERO;
	case PIPE_BLENDFACTOR_INV_SRC_COLOR:
		return V_028780_BLEND_ONE_MINUS_SRC_COLOR;
	case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
		return V_028780_BLEND_ONE_MINUS_SRC_ALPHA;
	case PIPE_BLENDFACTOR_INV_DST_ALPHA:
		return V_028780_BLEND_ONE_MINUS_DST_ALPHA;
	case PIPE_BLENDFACTOR_INV_DST_COLOR:
		return V_028780_BLEND_ONE_MINUS_DST_COLOR;
	case PIPE_BLENDFACTOR_INV_CONST_COLOR:
		return V_028780_BLEND_ONE_MINUS_CONSTANT_COLOR;
	case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
		return V_028780_BLEND_ONE_MINUS_CONSTANT_ALPHA;
	case PIPE_BLENDFACTOR_SRC1_COLOR:
		return V_028780_BLEND_SRC1_COLOR;
	case PIPE_BLENDFACTOR_SRC1_ALPHA:
		return V_028780_BLEND_SRC1_ALPHA;
	case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
		return V_028780_BLEND_INV_SRC1_COLOR;
	case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
		return V_028780_BLEND_INV_SRC1_ALPHA;
	default:
		R600_ERR("Bad blend factor %d not supported!\n", blend_fact);
		assert(0);
		break;
	}
	return 0;
}

static uint32_t si_translate_blend_opt_function(int blend_func)
{
	switch (blend_func) {
	case PIPE_BLEND_ADD:
		return V_028760_OPT_COMB_ADD;
	case PIPE_BLEND_SUBTRACT:
		return V_028760_OPT_COMB_SUBTRACT;
	case PIPE_BLEND_REVERSE_SUBTRACT:
		return V_028760_OPT_COMB_REVSUBTRACT;
	case PIPE_BLEND_MIN:
		return V_028760_OPT_COMB_MIN;
	case PIPE_BLEND_MAX:
		return V_028760_OPT_COMB_MAX;
	default:
		return V_028760_OPT_COMB_BLEND_DISABLED;
	}
}

static uint32_t si_translate_blend_opt_factor(int blend_fact, bool is_alpha)
{
	switch (blend_fact) {
	case PIPE_BLENDFACTOR_ZERO:
		return V_028760_BLEND_OPT_PRESERVE_NONE_IGNORE_ALL;
	case PIPE_BLENDFACTOR_ONE:
		return V_028760_BLEND_OPT_PRESERVE_ALL_IGNORE_NONE;
	case PIPE_BLENDFACTOR_SRC_COLOR:
		return is_alpha ? V_028760_BLEND_OPT_PRESERVE_A1_IGNORE_A0
				: V_028760_BLEND_OPT_PRESERVE_C1_IGNORE_C0;
	case PIPE_BLENDFACTOR_INV_SRC_COLOR:
		return is_alpha ? V_028760_BLEND_OPT_PRESERVE_A0_IGNORE_A1
				: V_028760_BLEND_OPT_PRESERVE_C0_IGNORE_C1;
	case PIPE_BLENDFACTOR_SRC_ALPHA:
		return V_028760_BLEND_OPT_PRESERVE_A1_IGNORE_A0;
	case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
		return V_028760_BLEND_OPT_PRESERVE_A0_IGNORE_A1;
	case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
		return is_alpha ? V_028760_BLEND_OPT_PRESERVE_ALL_IGNORE_NONE
				: V_028760_BLEND_OPT_PRESERVE_NONE_IGNORE_A0;
	default:
		return V_028760_BLEND_OPT_PRESERVE_NONE_IGNORE_NONE;
	}
}

/**
 * Get rid of DST in the blend factors by commuting the operands:
 *    func(src * DST, dst * 0) ---> func(src * 0, dst * SRC)
 */
static void si_blend_remove_dst(unsigned *func, unsigned *src_factor,
				unsigned *dst_factor, unsigned expected_dst,
				unsigned replacement_src)
{
	if (*src_factor == expected_dst &&
	    *dst_factor == PIPE_BLENDFACTOR_ZERO) {
		*src_factor = PIPE_BLENDFACTOR_ZERO;
		*dst_factor = replacement_src;

		/* Commuting the operands requires reversing subtractions. */
		if (*func == PIPE_BLEND_SUBTRACT)
			*func = PIPE_BLEND_REVERSE_SUBTRACT;
		else if (*func == PIPE_BLEND_REVERSE_SUBTRACT)
			*func = PIPE_BLEND_SUBTRACT;
	}
}

static bool si_blend_factor_uses_dst(unsigned factor)
{
	return factor == PIPE_BLENDFACTOR_DST_COLOR ||
		factor == PIPE_BLENDFACTOR_DST_ALPHA ||
		factor == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
		factor == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
		factor == PIPE_BLENDFACTOR_INV_DST_COLOR;
}

static void *si_create_blend_state_mode(struct pipe_context *ctx,
					const struct pipe_blend_state *state,
					unsigned mode)
{
	struct si_context *sctx = (struct si_context*)ctx;
	struct si_state_blend *blend = CALLOC_STRUCT(si_state_blend);
	struct si_pm4_state *pm4 = &blend->pm4;
	uint32_t sx_mrt_blend_opt[8] = {0};
	uint32_t color_control = 0;

	if (!blend)
		return NULL;

	blend->alpha_to_coverage = state->alpha_to_coverage;
	blend->alpha_to_one = state->alpha_to_one;
	blend->dual_src_blend = util_blend_state_is_dual(state, 0);

	if (state->logicop_enable) {
		color_control |= S_028808_ROP3(state->logicop_func | (state->logicop_func << 4));
	} else {
		color_control |= S_028808_ROP3(0xcc);
	}

	si_pm4_set_reg(pm4, R_028B70_DB_ALPHA_TO_MASK,
		       S_028B70_ALPHA_TO_MASK_ENABLE(state->alpha_to_coverage) |
		       S_028B70_ALPHA_TO_MASK_OFFSET0(2) |
		       S_028B70_ALPHA_TO_MASK_OFFSET1(2) |
		       S_028B70_ALPHA_TO_MASK_OFFSET2(2) |
		       S_028B70_ALPHA_TO_MASK_OFFSET3(2));

	if (state->alpha_to_coverage)
		blend->need_src_alpha_4bit |= 0xf;

	blend->cb_target_mask = 0;
	for (int i = 0; i < 8; i++) {
		/* state->rt entries > 0 only written if independent blending */
		const int j = state->independent_blend_enable ? i : 0;

		unsigned eqRGB = state->rt[j].rgb_func;
		unsigned srcRGB = state->rt[j].rgb_src_factor;
		unsigned dstRGB = state->rt[j].rgb_dst_factor;
		unsigned eqA = state->rt[j].alpha_func;
		unsigned srcA = state->rt[j].alpha_src_factor;
		unsigned dstA = state->rt[j].alpha_dst_factor;

		unsigned srcRGB_opt, dstRGB_opt, srcA_opt, dstA_opt;
		unsigned blend_cntl = 0;

		sx_mrt_blend_opt[i] =
			S_028760_COLOR_COMB_FCN(V_028760_OPT_COMB_BLEND_DISABLED) |
			S_028760_ALPHA_COMB_FCN(V_028760_OPT_COMB_BLEND_DISABLED);

		/* Only set dual source blending for MRT0 to avoid a hang. */
		if (i >= 1 && blend->dual_src_blend) {
			/* Vulkan does this for dual source blending. */
			if (i == 1)
				blend_cntl |= S_028780_ENABLE(1);

			si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
			continue;
		}

		/* Only addition and subtraction equations are supported with
		 * dual source blending.
		 */
		if (blend->dual_src_blend &&
		    (eqRGB == PIPE_BLEND_MIN || eqRGB == PIPE_BLEND_MAX ||
		     eqA == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MAX)) {
			assert(!"Unsupported equation for dual source blending");
			si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
			continue;
		}

		/* cb_render_state will disable unused ones */
		blend->cb_target_mask |= (unsigned)state->rt[j].colormask << (4 * i);

		if (!state->rt[j].colormask || !state->rt[j].blend_enable) {
			si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
			continue;
		}

		/* Blending optimizations for Stoney.
		 * These transformations don't change the behavior.
		 *
		 * First, get rid of DST in the blend factors:
		 *    func(src * DST, dst * 0) ---> func(src * 0, dst * SRC)
		 */
		si_blend_remove_dst(&eqRGB, &srcRGB, &dstRGB,
				    PIPE_BLENDFACTOR_DST_COLOR,
				    PIPE_BLENDFACTOR_SRC_COLOR);
		si_blend_remove_dst(&eqA, &srcA, &dstA,
				    PIPE_BLENDFACTOR_DST_COLOR,
				    PIPE_BLENDFACTOR_SRC_COLOR);
		si_blend_remove_dst(&eqA, &srcA, &dstA,
				    PIPE_BLENDFACTOR_DST_ALPHA,
				    PIPE_BLENDFACTOR_SRC_ALPHA);

		/* Look up the ideal settings from tables. */
		srcRGB_opt = si_translate_blend_opt_factor(srcRGB, false);
		dstRGB_opt = si_translate_blend_opt_factor(dstRGB, false);
		srcA_opt = si_translate_blend_opt_factor(srcA, true);
		dstA_opt = si_translate_blend_opt_factor(dstA, true);

		/* Handle interdependencies. */
		if (si_blend_factor_uses_dst(srcRGB))
			dstRGB_opt = V_028760_BLEND_OPT_PRESERVE_NONE_IGNORE_NONE;
		if (si_blend_factor_uses_dst(srcA))
			dstA_opt = V_028760_BLEND_OPT_PRESERVE_NONE_IGNORE_NONE;

		if (srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE &&
		    (dstRGB == PIPE_BLENDFACTOR_ZERO ||
		     dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
		     dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE))
			dstRGB_opt = V_028760_BLEND_OPT_PRESERVE_NONE_IGNORE_A0;

		/* Set the final value. */
		sx_mrt_blend_opt[i] =
			S_028760_COLOR_SRC_OPT(srcRGB_opt) |
			S_028760_COLOR_DST_OPT(dstRGB_opt) |
			S_028760_COLOR_COMB_FCN(si_translate_blend_opt_function(eqRGB)) |
			S_028760_ALPHA_SRC_OPT(srcA_opt) |
			S_028760_ALPHA_DST_OPT(dstA_opt) |
			S_028760_ALPHA_COMB_FCN(si_translate_blend_opt_function(eqA));

		/* Set blend state. */
		blend_cntl |= S_028780_ENABLE(1);
		blend_cntl |= S_028780_COLOR_COMB_FCN(si_translate_blend_function(eqRGB));
		blend_cntl |= S_028780_COLOR_SRCBLEND(si_translate_blend_factor(srcRGB));
		blend_cntl |= S_028780_COLOR_DESTBLEND(si_translate_blend_factor(dstRGB));

		if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
			blend_cntl |= S_028780_SEPARATE_ALPHA_BLEND(1);
			blend_cntl |= S_028780_ALPHA_COMB_FCN(si_translate_blend_function(eqA));
			blend_cntl |= S_028780_ALPHA_SRCBLEND(si_translate_blend_factor(srcA));
			blend_cntl |= S_028780_ALPHA_DESTBLEND(si_translate_blend_factor(dstA));
		}
		si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);

		blend->blend_enable_4bit |= 0xfu << (i * 4);

		/* This is only important for formats without alpha. */
		if (srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
		    dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
		    srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
		    dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
		    srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
		    dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA)
			blend->need_src_alpha_4bit |= 0xfu << (i * 4);
	}

	if (blend->cb_target_mask) {
		color_control |= S_028808_MODE(mode);
	} else {
		color_control |= S_028808_MODE(V_028808_CB_DISABLE);
	}

	if (sctx->b.family == CHIP_STONEY) {
		/* Disable RB+ blend optimizations for dual source blending.
		 * Vulkan does this.
		 */
		if (blend->dual_src_blend) {
			for (int i = 0; i < 8; i++) {
				sx_mrt_blend_opt[i] =
					S_028760_COLOR_COMB_FCN(V_028760_OPT_COMB_NONE) |
					S_028760_ALPHA_COMB_FCN(V_028760_OPT_COMB_NONE);
			}
		}

		for (int i = 0; i < 8; i++)
			si_pm4_set_reg(pm4, R_028760_SX_MRT0_BLEND_OPT + i * 4,
				       sx_mrt_blend_opt[i]);

		/* RB+ doesn't work with dual source blending, logic op, and RESOLVE. */
		if (blend->dual_src_blend || state->logicop_enable ||
		    mode == V_028808_CB_RESOLVE)
			color_control |= S_028808_DISABLE_DUAL_QUAD(1);
	}

	si_pm4_set_reg(pm4, R_028808_CB_COLOR_CONTROL, color_control);
	return blend;
}

static void *si_create_blend_state(struct pipe_context *ctx,
				   const struct pipe_blend_state *state)
{
	return si_create_blend_state_mode(ctx, state, V_028808_CB_NORMAL);
}

static void si_bind_blend_state(struct pipe_context *ctx, void *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	si_pm4_bind_state(sctx, blend, (struct si_state_blend *)state);
	si_mark_atom_dirty(sctx, &sctx->cb_render_state);
	sctx->do_update_shaders = true;
}

static void si_delete_blend_state(struct pipe_context *ctx, void *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	si_pm4_delete_state(sctx, blend, (struct si_state_blend *)state);
}

static void si_set_blend_color(struct pipe_context *ctx,
			       const struct pipe_blend_color *state)
{
	struct si_context *sctx = (struct si_context *)ctx;

	if (memcmp(&sctx->blend_color.state, state, sizeof(*state)) == 0)
		return;

	sctx->blend_color.state = *state;
	si_mark_atom_dirty(sctx, &sctx->blend_color.atom);
}

static void si_emit_blend_color(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;

	radeon_set_context_reg_seq(cs, R_028414_CB_BLEND_RED, 4);
	radeon_emit_array(cs, (uint32_t*)sctx->blend_color.state.color, 4);
}

/*
 * Clipping
 */

static void si_set_clip_state(struct pipe_context *ctx,
			      const struct pipe_clip_state *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	struct pipe_constant_buffer cb;

	if (memcmp(&sctx->clip_state.state, state, sizeof(*state)) == 0)
		return;

	sctx->clip_state.state = *state;
	si_mark_atom_dirty(sctx, &sctx->clip_state.atom);

	cb.buffer = NULL;
	cb.user_buffer = state->ucp;
	cb.buffer_offset = 0;
	cb.buffer_size = 4*4*8;
	si_set_rw_buffer(sctx, SI_VS_CONST_CLIP_PLANES, &cb);
	pipe_resource_reference(&cb.buffer, NULL);
}

static void si_emit_clip_state(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;

	radeon_set_context_reg_seq(cs, R_0285BC_PA_CL_UCP_0_X, 6*4);
	radeon_emit_array(cs, (uint32_t*)sctx->clip_state.state.ucp, 6*4);
}

#define SIX_BITS 0x3F

static void si_emit_clip_regs(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	struct si_shader *vs = si_get_vs_state(sctx);
	struct tgsi_shader_info *info = si_get_vs_info(sctx);
	struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
	unsigned window_space =
	   info->properties[TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION];
	unsigned clipdist_mask =
		info->writes_clipvertex ? SIX_BITS : info->clipdist_writemask;
	unsigned ucp_mask = clipdist_mask ? 0 : rs->clip_plane_enable & SIX_BITS;
	unsigned culldist_mask = info->culldist_writemask << info->num_written_clipdistance;
	unsigned total_mask;
	bool misc_vec_ena;

	if (vs->key.opt.hw_vs.clip_disable) {
		assert(!info->culldist_writemask);
		clipdist_mask = 0;
		culldist_mask = 0;
	}
	total_mask = clipdist_mask | culldist_mask;

	/* Clip distances on points have no effect, so need to be implemented
	 * as cull distances. This applies for the clipvertex case as well.
	 *
	 * Setting this for primitives other than points should have no adverse
	 * effects.
	 */
	clipdist_mask &= rs->clip_plane_enable;
	culldist_mask |= clipdist_mask;

	misc_vec_ena = info->writes_psize || info->writes_edgeflag ||
		       info->writes_layer || info->writes_viewport_index;

	radeon_set_context_reg(cs, R_02881C_PA_CL_VS_OUT_CNTL,
		S_02881C_USE_VTX_POINT_SIZE(info->writes_psize) |
		S_02881C_USE_VTX_EDGE_FLAG(info->writes_edgeflag) |
		S_02881C_USE_VTX_RENDER_TARGET_INDX(info->writes_layer) |
	        S_02881C_USE_VTX_VIEWPORT_INDX(info->writes_viewport_index) |
		S_02881C_VS_OUT_CCDIST0_VEC_ENA((total_mask & 0x0F) != 0) |
		S_02881C_VS_OUT_CCDIST1_VEC_ENA((total_mask & 0xF0) != 0) |
		S_02881C_VS_OUT_MISC_VEC_ENA(misc_vec_ena) |
		S_02881C_VS_OUT_MISC_SIDE_BUS_ENA(misc_vec_ena) |
		clipdist_mask | (culldist_mask << 8));
	radeon_set_context_reg(cs, R_028810_PA_CL_CLIP_CNTL,
		rs->pa_cl_clip_cntl |
		ucp_mask |
		S_028810_CLIP_DISABLE(window_space));

	/* reuse needs to be set off if we write oViewport */
	radeon_set_context_reg(cs, R_028AB4_VGT_REUSE_OFF,
			       S_028AB4_REUSE_OFF(info->writes_viewport_index));
}

/*
 * inferred state between framebuffer and rasterizer
 */
static void si_update_poly_offset_state(struct si_context *sctx)
{
	struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;

	if (!rs || !rs->uses_poly_offset || !sctx->framebuffer.state.zsbuf) {
		si_pm4_bind_state(sctx, poly_offset, NULL);
		return;
	}

	/* Use the user format, not db_render_format, so that the polygon
	 * offset behaves as expected by applications.
	 */
	switch (sctx->framebuffer.state.zsbuf->texture->format) {
	case PIPE_FORMAT_Z16_UNORM:
		si_pm4_bind_state(sctx, poly_offset, &rs->pm4_poly_offset[0]);
		break;
	default: /* 24-bit */
		si_pm4_bind_state(sctx, poly_offset, &rs->pm4_poly_offset[1]);
		break;
	case PIPE_FORMAT_Z32_FLOAT:
	case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
		si_pm4_bind_state(sctx, poly_offset, &rs->pm4_poly_offset[2]);
		break;
	}
}

/*
 * Rasterizer
 */

static uint32_t si_translate_fill(uint32_t func)
{
	switch(func) {
	case PIPE_POLYGON_MODE_FILL:
		return V_028814_X_DRAW_TRIANGLES;
	case PIPE_POLYGON_MODE_LINE:
		return V_028814_X_DRAW_LINES;
	case PIPE_POLYGON_MODE_POINT:
		return V_028814_X_DRAW_POINTS;
	default:
		assert(0);
		return V_028814_X_DRAW_POINTS;
	}
}

static void *si_create_rs_state(struct pipe_context *ctx,
				const struct pipe_rasterizer_state *state)
{
	struct si_state_rasterizer *rs = CALLOC_STRUCT(si_state_rasterizer);
	struct si_pm4_state *pm4 = &rs->pm4;
	unsigned tmp, i;
	float psize_min, psize_max;

	if (!rs) {
		return NULL;
	}

	rs->scissor_enable = state->scissor;
	rs->clip_halfz = state->clip_halfz;
	rs->two_side = state->light_twoside;
	rs->multisample_enable = state->multisample;
	rs->force_persample_interp = state->force_persample_interp;
	rs->clip_plane_enable = state->clip_plane_enable;
	rs->line_stipple_enable = state->line_stipple_enable;
	rs->poly_stipple_enable = state->poly_stipple_enable;
	rs->line_smooth = state->line_smooth;
	rs->poly_smooth = state->poly_smooth;
	rs->uses_poly_offset = state->offset_point || state->offset_line ||
			       state->offset_tri;
	rs->clamp_fragment_color = state->clamp_fragment_color;
	rs->flatshade = state->flatshade;
	rs->sprite_coord_enable = state->sprite_coord_enable;
	rs->rasterizer_discard = state->rasterizer_discard;
	rs->pa_sc_line_stipple = state->line_stipple_enable ?
				S_028A0C_LINE_PATTERN(state->line_stipple_pattern) |
				S_028A0C_REPEAT_COUNT(state->line_stipple_factor) : 0;
	rs->pa_cl_clip_cntl =
		S_028810_DX_CLIP_SPACE_DEF(state->clip_halfz) |
		S_028810_ZCLIP_NEAR_DISABLE(!state->depth_clip) |
		S_028810_ZCLIP_FAR_DISABLE(!state->depth_clip) |
		S_028810_DX_RASTERIZATION_KILL(state->rasterizer_discard) |
		S_028810_DX_LINEAR_ATTR_CLIP_ENA(1);

	si_pm4_set_reg(pm4, R_0286D4_SPI_INTERP_CONTROL_0,
		S_0286D4_FLAT_SHADE_ENA(1) |
		S_0286D4_PNT_SPRITE_ENA(1) |
		S_0286D4_PNT_SPRITE_OVRD_X(V_0286D4_SPI_PNT_SPRITE_SEL_S) |
		S_0286D4_PNT_SPRITE_OVRD_Y(V_0286D4_SPI_PNT_SPRITE_SEL_T) |
		S_0286D4_PNT_SPRITE_OVRD_Z(V_0286D4_SPI_PNT_SPRITE_SEL_0) |
		S_0286D4_PNT_SPRITE_OVRD_W(V_0286D4_SPI_PNT_SPRITE_SEL_1) |
		S_0286D4_PNT_SPRITE_TOP_1(state->sprite_coord_mode != PIPE_SPRITE_COORD_UPPER_LEFT));

	/* point size 12.4 fixed point */
	tmp = (unsigned)(state->point_size * 8.0);
	si_pm4_set_reg(pm4, R_028A00_PA_SU_POINT_SIZE, S_028A00_HEIGHT(tmp) | S_028A00_WIDTH(tmp));

	if (state->point_size_per_vertex) {
		psize_min = util_get_min_point_size(state);
		psize_max = 8192;
	} else {
		/* Force the point size to be as if the vertex output was disabled. */
		psize_min = state->point_size;
		psize_max = state->point_size;
	}
	/* Divide by two, because 0.5 = 1 pixel. */
	si_pm4_set_reg(pm4, R_028A04_PA_SU_POINT_MINMAX,
			S_028A04_MIN_SIZE(si_pack_float_12p4(psize_min/2)) |
			S_028A04_MAX_SIZE(si_pack_float_12p4(psize_max/2)));

	tmp = (unsigned)state->line_width * 8;
	si_pm4_set_reg(pm4, R_028A08_PA_SU_LINE_CNTL, S_028A08_WIDTH(tmp));
	si_pm4_set_reg(pm4, R_028A48_PA_SC_MODE_CNTL_0,
		       S_028A48_LINE_STIPPLE_ENABLE(state->line_stipple_enable) |
		       S_028A48_MSAA_ENABLE(state->multisample ||
					    state->poly_smooth ||
					    state->line_smooth) |
		       S_028A48_VPORT_SCISSOR_ENABLE(1));

	si_pm4_set_reg(pm4, R_028BE4_PA_SU_VTX_CNTL,
		       S_028BE4_PIX_CENTER(state->half_pixel_center) |
		       S_028BE4_QUANT_MODE(V_028BE4_X_16_8_FIXED_POINT_1_256TH));

	si_pm4_set_reg(pm4, R_028B7C_PA_SU_POLY_OFFSET_CLAMP, fui(state->offset_clamp));
	si_pm4_set_reg(pm4, R_028814_PA_SU_SC_MODE_CNTL,
		S_028814_PROVOKING_VTX_LAST(!state->flatshade_first) |
		S_028814_CULL_FRONT((state->cull_face & PIPE_FACE_FRONT) ? 1 : 0) |
		S_028814_CULL_BACK((state->cull_face & PIPE_FACE_BACK) ? 1 : 0) |
		S_028814_FACE(!state->front_ccw) |
		S_028814_POLY_OFFSET_FRONT_ENABLE(util_get_offset(state, state->fill_front)) |
		S_028814_POLY_OFFSET_BACK_ENABLE(util_get_offset(state, state->fill_back)) |
		S_028814_POLY_OFFSET_PARA_ENABLE(state->offset_point || state->offset_line) |
		S_028814_POLY_MODE(state->fill_front != PIPE_POLYGON_MODE_FILL ||
				   state->fill_back != PIPE_POLYGON_MODE_FILL) |
		S_028814_POLYMODE_FRONT_PTYPE(si_translate_fill(state->fill_front)) |
		S_028814_POLYMODE_BACK_PTYPE(si_translate_fill(state->fill_back)));
	si_pm4_set_reg(pm4, R_00B130_SPI_SHADER_USER_DATA_VS_0 +
		       SI_SGPR_VS_STATE_BITS * 4, state->clamp_vertex_color);

	/* Precalculate polygon offset states for 16-bit, 24-bit, and 32-bit zbuffers. */
	for (i = 0; i < 3; i++) {
		struct si_pm4_state *pm4 = &rs->pm4_poly_offset[i];
		float offset_units = state->offset_units;
		float offset_scale = state->offset_scale * 16.0f;
		uint32_t pa_su_poly_offset_db_fmt_cntl = 0;

		if (!state->offset_units_unscaled) {
			switch (i) {
			case 0: /* 16-bit zbuffer */
				offset_units *= 4.0f;
				pa_su_poly_offset_db_fmt_cntl =
					S_028B78_POLY_OFFSET_NEG_NUM_DB_BITS(-16);
				break;
			case 1: /* 24-bit zbuffer */
				offset_units *= 2.0f;
				pa_su_poly_offset_db_fmt_cntl =
					S_028B78_POLY_OFFSET_NEG_NUM_DB_BITS(-24);
				break;
			case 2: /* 32-bit zbuffer */
				offset_units *= 1.0f;
				pa_su_poly_offset_db_fmt_cntl = S_028B78_POLY_OFFSET_NEG_NUM_DB_BITS(-23) |
								S_028B78_POLY_OFFSET_DB_IS_FLOAT_FMT(1);
				break;
			}
		}

		si_pm4_set_reg(pm4, R_028B80_PA_SU_POLY_OFFSET_FRONT_SCALE,
			       fui(offset_scale));
		si_pm4_set_reg(pm4, R_028B84_PA_SU_POLY_OFFSET_FRONT_OFFSET,
			       fui(offset_units));
		si_pm4_set_reg(pm4, R_028B88_PA_SU_POLY_OFFSET_BACK_SCALE,
			       fui(offset_scale));
		si_pm4_set_reg(pm4, R_028B8C_PA_SU_POLY_OFFSET_BACK_OFFSET,
			       fui(offset_units));
		si_pm4_set_reg(pm4, R_028B78_PA_SU_POLY_OFFSET_DB_FMT_CNTL,
			       pa_su_poly_offset_db_fmt_cntl);
	}

	return rs;
}

static void si_bind_rs_state(struct pipe_context *ctx, void *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	struct si_state_rasterizer *old_rs =
		(struct si_state_rasterizer*)sctx->queued.named.rasterizer;
	struct si_state_rasterizer *rs = (struct si_state_rasterizer *)state;

	if (!state)
		return;

	if (!old_rs || old_rs->multisample_enable != rs->multisample_enable) {
		si_mark_atom_dirty(sctx, &sctx->db_render_state);

		/* Update the small primitive filter workaround if necessary. */
		if (sctx->b.family >= CHIP_POLARIS10 &&
		    sctx->framebuffer.nr_samples > 1)
			si_mark_atom_dirty(sctx, &sctx->msaa_sample_locs.atom);
	}

	r600_viewport_set_rast_deps(&sctx->b, rs->scissor_enable, rs->clip_halfz);

	si_pm4_bind_state(sctx, rasterizer, rs);
	si_update_poly_offset_state(sctx);

	si_mark_atom_dirty(sctx, &sctx->clip_regs);
	sctx->do_update_shaders = true;
}

static void si_delete_rs_state(struct pipe_context *ctx, void *state)
{
	struct si_context *sctx = (struct si_context *)ctx;

	if (sctx->queued.named.rasterizer == state)
		si_pm4_bind_state(sctx, poly_offset, NULL);
	si_pm4_delete_state(sctx, rasterizer, (struct si_state_rasterizer *)state);
}

/*
 * infeered state between dsa and stencil ref
 */
static void si_emit_stencil_ref(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	struct pipe_stencil_ref *ref = &sctx->stencil_ref.state;
	struct si_dsa_stencil_ref_part *dsa = &sctx->stencil_ref.dsa_part;

	radeon_set_context_reg_seq(cs, R_028430_DB_STENCILREFMASK, 2);
	radeon_emit(cs, S_028430_STENCILTESTVAL(ref->ref_value[0]) |
			S_028430_STENCILMASK(dsa->valuemask[0]) |
			S_028430_STENCILWRITEMASK(dsa->writemask[0]) |
			S_028430_STENCILOPVAL(1));
	radeon_emit(cs, S_028434_STENCILTESTVAL_BF(ref->ref_value[1]) |
			S_028434_STENCILMASK_BF(dsa->valuemask[1]) |
			S_028434_STENCILWRITEMASK_BF(dsa->writemask[1]) |
			S_028434_STENCILOPVAL_BF(1));
}

static void si_set_stencil_ref(struct pipe_context *ctx,
			       const struct pipe_stencil_ref *state)
{
        struct si_context *sctx = (struct si_context *)ctx;

	if (memcmp(&sctx->stencil_ref.state, state, sizeof(*state)) == 0)
		return;

	sctx->stencil_ref.state = *state;
	si_mark_atom_dirty(sctx, &sctx->stencil_ref.atom);
}


/*
 * DSA
 */

static uint32_t si_translate_stencil_op(int s_op)
{
	switch (s_op) {
	case PIPE_STENCIL_OP_KEEP:
		return V_02842C_STENCIL_KEEP;
	case PIPE_STENCIL_OP_ZERO:
		return V_02842C_STENCIL_ZERO;
	case PIPE_STENCIL_OP_REPLACE:
		return V_02842C_STENCIL_REPLACE_TEST;
	case PIPE_STENCIL_OP_INCR:
		return V_02842C_STENCIL_ADD_CLAMP;
	case PIPE_STENCIL_OP_DECR:
		return V_02842C_STENCIL_SUB_CLAMP;
	case PIPE_STENCIL_OP_INCR_WRAP:
		return V_02842C_STENCIL_ADD_WRAP;
	case PIPE_STENCIL_OP_DECR_WRAP:
		return V_02842C_STENCIL_SUB_WRAP;
	case PIPE_STENCIL_OP_INVERT:
		return V_02842C_STENCIL_INVERT;
	default:
		R600_ERR("Unknown stencil op %d", s_op);
		assert(0);
		break;
	}
	return 0;
}

static void *si_create_dsa_state(struct pipe_context *ctx,
				 const struct pipe_depth_stencil_alpha_state *state)
{
	struct si_state_dsa *dsa = CALLOC_STRUCT(si_state_dsa);
	struct si_pm4_state *pm4 = &dsa->pm4;
	unsigned db_depth_control;
	uint32_t db_stencil_control = 0;

	if (!dsa) {
		return NULL;
	}

	dsa->stencil_ref.valuemask[0] = state->stencil[0].valuemask;
	dsa->stencil_ref.valuemask[1] = state->stencil[1].valuemask;
	dsa->stencil_ref.writemask[0] = state->stencil[0].writemask;
	dsa->stencil_ref.writemask[1] = state->stencil[1].writemask;

	db_depth_control = S_028800_Z_ENABLE(state->depth.enabled) |
		S_028800_Z_WRITE_ENABLE(state->depth.writemask) |
		S_028800_ZFUNC(state->depth.func) |
		S_028800_DEPTH_BOUNDS_ENABLE(state->depth.bounds_test);

	/* stencil */
	if (state->stencil[0].enabled) {
		db_depth_control |= S_028800_STENCIL_ENABLE(1);
		db_depth_control |= S_028800_STENCILFUNC(state->stencil[0].func);
		db_stencil_control |= S_02842C_STENCILFAIL(si_translate_stencil_op(state->stencil[0].fail_op));
		db_stencil_control |= S_02842C_STENCILZPASS(si_translate_stencil_op(state->stencil[0].zpass_op));
		db_stencil_control |= S_02842C_STENCILZFAIL(si_translate_stencil_op(state->stencil[0].zfail_op));

		if (state->stencil[1].enabled) {
			db_depth_control |= S_028800_BACKFACE_ENABLE(1);
			db_depth_control |= S_028800_STENCILFUNC_BF(state->stencil[1].func);
			db_stencil_control |= S_02842C_STENCILFAIL_BF(si_translate_stencil_op(state->stencil[1].fail_op));
			db_stencil_control |= S_02842C_STENCILZPASS_BF(si_translate_stencil_op(state->stencil[1].zpass_op));
			db_stencil_control |= S_02842C_STENCILZFAIL_BF(si_translate_stencil_op(state->stencil[1].zfail_op));
		}
	}

	/* alpha */
	if (state->alpha.enabled) {
		dsa->alpha_func = state->alpha.func;

		si_pm4_set_reg(pm4, R_00B030_SPI_SHADER_USER_DATA_PS_0 +
		               SI_SGPR_ALPHA_REF * 4, fui(state->alpha.ref_value));
	} else {
		dsa->alpha_func = PIPE_FUNC_ALWAYS;
	}

	si_pm4_set_reg(pm4, R_028800_DB_DEPTH_CONTROL, db_depth_control);
	si_pm4_set_reg(pm4, R_02842C_DB_STENCIL_CONTROL, db_stencil_control);
	if (state->depth.bounds_test) {
		si_pm4_set_reg(pm4, R_028020_DB_DEPTH_BOUNDS_MIN, fui(state->depth.bounds_min));
		si_pm4_set_reg(pm4, R_028024_DB_DEPTH_BOUNDS_MAX, fui(state->depth.bounds_max));
	}

	return dsa;
}

static void si_bind_dsa_state(struct pipe_context *ctx, void *state)
{
        struct si_context *sctx = (struct si_context *)ctx;
        struct si_state_dsa *dsa = state;

        if (!state)
                return;

	si_pm4_bind_state(sctx, dsa, dsa);

	if (memcmp(&dsa->stencil_ref, &sctx->stencil_ref.dsa_part,
		   sizeof(struct si_dsa_stencil_ref_part)) != 0) {
		sctx->stencil_ref.dsa_part = dsa->stencil_ref;
		si_mark_atom_dirty(sctx, &sctx->stencil_ref.atom);
	}
	sctx->do_update_shaders = true;
}

static void si_delete_dsa_state(struct pipe_context *ctx, void *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	si_pm4_delete_state(sctx, dsa, (struct si_state_dsa *)state);
}

static void *si_create_db_flush_dsa(struct si_context *sctx)
{
	struct pipe_depth_stencil_alpha_state dsa = {};

	return sctx->b.b.create_depth_stencil_alpha_state(&sctx->b.b, &dsa);
}

/* DB RENDER STATE */

static void si_set_active_query_state(struct pipe_context *ctx, boolean enable)
{
	struct si_context *sctx = (struct si_context*)ctx;

	/* Pipeline stat & streamout queries. */
	if (enable) {
		sctx->b.flags &= ~R600_CONTEXT_STOP_PIPELINE_STATS;
		sctx->b.flags |= R600_CONTEXT_START_PIPELINE_STATS;
	} else {
		sctx->b.flags &= ~R600_CONTEXT_START_PIPELINE_STATS;
		sctx->b.flags |= R600_CONTEXT_STOP_PIPELINE_STATS;
	}

	/* Occlusion queries. */
	if (sctx->occlusion_queries_disabled != !enable) {
		sctx->occlusion_queries_disabled = !enable;
		si_mark_atom_dirty(sctx, &sctx->db_render_state);
	}
}

static void si_set_occlusion_query_state(struct pipe_context *ctx, bool enable)
{
	struct si_context *sctx = (struct si_context*)ctx;

	si_mark_atom_dirty(sctx, &sctx->db_render_state);
}

static void si_save_qbo_state(struct pipe_context *ctx, struct r600_qbo_state *st)
{
	struct si_context *sctx = (struct si_context*)ctx;

	st->saved_compute = sctx->cs_shader_state.program;

	si_get_pipe_constant_buffer(sctx, PIPE_SHADER_COMPUTE, 0, &st->saved_const0);
	si_get_shader_buffers(sctx, PIPE_SHADER_COMPUTE, 0, 3, st->saved_ssbo);
}

static void si_emit_db_render_state(struct si_context *sctx, struct r600_atom *state)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
	unsigned db_shader_control;

	radeon_set_context_reg_seq(cs, R_028000_DB_RENDER_CONTROL, 2);

	/* DB_RENDER_CONTROL */
	if (sctx->dbcb_depth_copy_enabled ||
	    sctx->dbcb_stencil_copy_enabled) {
		radeon_emit(cs,
			    S_028000_DEPTH_COPY(sctx->dbcb_depth_copy_enabled) |
			    S_028000_STENCIL_COPY(sctx->dbcb_stencil_copy_enabled) |
			    S_028000_COPY_CENTROID(1) |
			    S_028000_COPY_SAMPLE(sctx->dbcb_copy_sample));
	} else if (sctx->db_flush_depth_inplace || sctx->db_flush_stencil_inplace) {
		radeon_emit(cs,
			    S_028000_DEPTH_COMPRESS_DISABLE(sctx->db_flush_depth_inplace) |
			    S_028000_STENCIL_COMPRESS_DISABLE(sctx->db_flush_stencil_inplace));
	} else {
		radeon_emit(cs,
			    S_028000_DEPTH_CLEAR_ENABLE(sctx->db_depth_clear) |
			    S_028000_STENCIL_CLEAR_ENABLE(sctx->db_stencil_clear));
	}

	/* DB_COUNT_CONTROL (occlusion queries) */
	if (sctx->b.num_occlusion_queries > 0 &&
	    !sctx->occlusion_queries_disabled) {
		bool perfect = sctx->b.num_perfect_occlusion_queries > 0;

		if (sctx->b.chip_class >= CIK) {
			radeon_emit(cs,
				    S_028004_PERFECT_ZPASS_COUNTS(perfect) |
				    S_028004_SAMPLE_RATE(sctx->framebuffer.log_samples) |
				    S_028004_ZPASS_ENABLE(1) |
				    S_028004_SLICE_EVEN_ENABLE(1) |
				    S_028004_SLICE_ODD_ENABLE(1));
		} else {
			radeon_emit(cs,
				    S_028004_PERFECT_ZPASS_COUNTS(perfect) |
				    S_028004_SAMPLE_RATE(sctx->framebuffer.log_samples));
		}
	} else {
		/* Disable occlusion queries. */
		if (sctx->b.chip_class >= CIK) {
			radeon_emit(cs, 0);
		} else {
			radeon_emit(cs, S_028004_ZPASS_INCREMENT_DISABLE(1));
		}
	}

	/* DB_RENDER_OVERRIDE2 */
	radeon_set_context_reg(cs, R_028010_DB_RENDER_OVERRIDE2,
		S_028010_DISABLE_ZMASK_EXPCLEAR_OPTIMIZATION(sctx->db_depth_disable_expclear) |
		S_028010_DISABLE_SMEM_EXPCLEAR_OPTIMIZATION(sctx->db_stencil_disable_expclear) |
		S_028010_DECOMPRESS_Z_ON_FLUSH(sctx->framebuffer.nr_samples >= 4));

	db_shader_control = sctx->ps_db_shader_control;

	/* Bug workaround for smoothing (overrasterization) on SI. */
	if (sctx->b.chip_class == SI && sctx->smoothing_enabled) {
		db_shader_control &= C_02880C_Z_ORDER;
		db_shader_control |= S_02880C_Z_ORDER(V_02880C_LATE_Z);
	}

	/* Disable the gl_SampleMask fragment shader output if MSAA is disabled. */
	if (!rs || !rs->multisample_enable)
		db_shader_control &= C_02880C_MASK_EXPORT_ENABLE;

	if (sctx->b.family == CHIP_STONEY &&
	    sctx->screen->b.debug_flags & DBG_NO_RB_PLUS)
		db_shader_control |= S_02880C_DUAL_QUAD_DISABLE(1);

	radeon_set_context_reg(cs, R_02880C_DB_SHADER_CONTROL,
			       db_shader_control);
}

/*
 * format translation
 */
static uint32_t si_translate_colorformat(enum pipe_format format)
{
	const struct util_format_description *desc = util_format_description(format);

#define HAS_SIZE(x,y,z,w) \
	(desc->channel[0].size == (x) && desc->channel[1].size == (y) && \
         desc->channel[2].size == (z) && desc->channel[3].size == (w))

	if (format == PIPE_FORMAT_R11G11B10_FLOAT) /* isn't plain */
		return V_028C70_COLOR_10_11_11;

	if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
		return V_028C70_COLOR_INVALID;

	/* hw cannot support mixed formats (except depth/stencil, since
	 * stencil is not written to). */
	if (desc->is_mixed && desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
		return V_028C70_COLOR_INVALID;

	switch (desc->nr_channels) {
	case 1:
		switch (desc->channel[0].size) {
		case 8:
			return V_028C70_COLOR_8;
		case 16:
			return V_028C70_COLOR_16;
		case 32:
			return V_028C70_COLOR_32;
		}
		break;
	case 2:
		if (desc->channel[0].size == desc->channel[1].size) {
			switch (desc->channel[0].size) {
			case 8:
				return V_028C70_COLOR_8_8;
			case 16:
				return V_028C70_COLOR_16_16;
			case 32:
				return V_028C70_COLOR_32_32;
			}
		} else if (HAS_SIZE(8,24,0,0)) {
			return V_028C70_COLOR_24_8;
		} else if (HAS_SIZE(24,8,0,0)) {
			return V_028C70_COLOR_8_24;
		}
		break;
	case 3:
		if (HAS_SIZE(5,6,5,0)) {
			return V_028C70_COLOR_5_6_5;
		} else if (HAS_SIZE(32,8,24,0)) {
			return V_028C70_COLOR_X24_8_32_FLOAT;
		}
		break;
	case 4:
		if (desc->channel[0].size == desc->channel[1].size &&
		    desc->channel[0].size == desc->channel[2].size &&
		    desc->channel[0].size == desc->channel[3].size) {
			switch (desc->channel[0].size) {
			case 4:
				return V_028C70_COLOR_4_4_4_4;
			case 8:
				return V_028C70_COLOR_8_8_8_8;
			case 16:
				return V_028C70_COLOR_16_16_16_16;
			case 32:
				return V_028C70_COLOR_32_32_32_32;
			}
		} else if (HAS_SIZE(5,5,5,1)) {
			return V_028C70_COLOR_1_5_5_5;
		} else if (HAS_SIZE(10,10,10,2)) {
			return V_028C70_COLOR_2_10_10_10;
		}
		break;
	}
	return V_028C70_COLOR_INVALID;
}

static uint32_t si_colorformat_endian_swap(uint32_t colorformat)
{
	if (SI_BIG_ENDIAN) {
		switch(colorformat) {
		/* 8-bit buffers. */
		case V_028C70_COLOR_8:
			return V_028C70_ENDIAN_NONE;

		/* 16-bit buffers. */
		case V_028C70_COLOR_5_6_5:
		case V_028C70_COLOR_1_5_5_5:
		case V_028C70_COLOR_4_4_4_4:
		case V_028C70_COLOR_16:
		case V_028C70_COLOR_8_8:
			return V_028C70_ENDIAN_8IN16;

		/* 32-bit buffers. */
		case V_028C70_COLOR_8_8_8_8:
		case V_028C70_COLOR_2_10_10_10:
		case V_028C70_COLOR_8_24:
		case V_028C70_COLOR_24_8:
		case V_028C70_COLOR_16_16:
			return V_028C70_ENDIAN_8IN32;

		/* 64-bit buffers. */
		case V_028C70_COLOR_16_16_16_16:
			return V_028C70_ENDIAN_8IN16;

		case V_028C70_COLOR_32_32:
			return V_028C70_ENDIAN_8IN32;

		/* 128-bit buffers. */
		case V_028C70_COLOR_32_32_32_32:
			return V_028C70_ENDIAN_8IN32;
		default:
			return V_028C70_ENDIAN_NONE; /* Unsupported. */
		}
	} else {
		return V_028C70_ENDIAN_NONE;
	}
}

static uint32_t si_translate_dbformat(enum pipe_format format)
{
	switch (format) {
	case PIPE_FORMAT_Z16_UNORM:
		return V_028040_Z_16;
	case PIPE_FORMAT_S8_UINT_Z24_UNORM:
	case PIPE_FORMAT_X8Z24_UNORM:
	case PIPE_FORMAT_Z24X8_UNORM:
	case PIPE_FORMAT_Z24_UNORM_S8_UINT:
		return V_028040_Z_24; /* deprecated on SI */
	case PIPE_FORMAT_Z32_FLOAT:
	case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
		return V_028040_Z_32_FLOAT;
	default:
		return V_028040_Z_INVALID;
	}
}

/*
 * Texture translation
 */

static uint32_t si_translate_texformat(struct pipe_screen *screen,
				       enum pipe_format format,
				       const struct util_format_description *desc,
				       int first_non_void)
{
	struct si_screen *sscreen = (struct si_screen*)screen;
	bool enable_compressed_formats = (sscreen->b.info.drm_major == 2 &&
					  sscreen->b.info.drm_minor >= 31) ||
					 sscreen->b.info.drm_major == 3;
	bool uniform = true;
	int i;

	/* Colorspace (return non-RGB formats directly). */
	switch (desc->colorspace) {
	/* Depth stencil formats */
	case UTIL_FORMAT_COLORSPACE_ZS:
		switch (format) {
		case PIPE_FORMAT_Z16_UNORM:
			return V_008F14_IMG_DATA_FORMAT_16;
		case PIPE_FORMAT_X24S8_UINT:
		case PIPE_FORMAT_S8X24_UINT:
			/*
			 * Implemented as an 8_8_8_8 data format to fix texture
			 * gathers in stencil sampling. This affects at least
			 * GL45-CTS.texture_cube_map_array.sampling on VI.
			 */
			return V_008F14_IMG_DATA_FORMAT_8_8_8_8;
		case PIPE_FORMAT_Z24X8_UNORM:
		case PIPE_FORMAT_Z24_UNORM_S8_UINT:
			return V_008F14_IMG_DATA_FORMAT_8_24;
		case PIPE_FORMAT_X8Z24_UNORM:
		case PIPE_FORMAT_S8_UINT_Z24_UNORM:
			return V_008F14_IMG_DATA_FORMAT_24_8;
		case PIPE_FORMAT_S8_UINT:
			return V_008F14_IMG_DATA_FORMAT_8;
		case PIPE_FORMAT_Z32_FLOAT:
			return V_008F14_IMG_DATA_FORMAT_32;
		case PIPE_FORMAT_X32_S8X24_UINT:
		case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
			return V_008F14_IMG_DATA_FORMAT_X24_8_32;
		default:
			goto out_unknown;
		}

	case UTIL_FORMAT_COLORSPACE_YUV:
		goto out_unknown; /* TODO */

	case UTIL_FORMAT_COLORSPACE_SRGB:
		if (desc->nr_channels != 4 && desc->nr_channels != 1)
			goto out_unknown;
		break;

	default:
		break;
	}

	if (desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
		if (!enable_compressed_formats)
			goto out_unknown;

		switch (format) {
		case PIPE_FORMAT_RGTC1_SNORM:
		case PIPE_FORMAT_LATC1_SNORM:
		case PIPE_FORMAT_RGTC1_UNORM:
		case PIPE_FORMAT_LATC1_UNORM:
			return V_008F14_IMG_DATA_FORMAT_BC4;
		case PIPE_FORMAT_RGTC2_SNORM:
		case PIPE_FORMAT_LATC2_SNORM:
		case PIPE_FORMAT_RGTC2_UNORM:
		case PIPE_FORMAT_LATC2_UNORM:
			return V_008F14_IMG_DATA_FORMAT_BC5;
		default:
			goto out_unknown;
		}
	}

	if (desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
	    sscreen->b.family == CHIP_STONEY) {
		switch (format) {
		case PIPE_FORMAT_ETC1_RGB8:
		case PIPE_FORMAT_ETC2_RGB8:
		case PIPE_FORMAT_ETC2_SRGB8:
			return V_008F14_IMG_DATA_FORMAT_ETC2_RGB;
		case PIPE_FORMAT_ETC2_RGB8A1:
		case PIPE_FORMAT_ETC2_SRGB8A1:
			return V_008F14_IMG_DATA_FORMAT_ETC2_RGBA1;
		case PIPE_FORMAT_ETC2_RGBA8:
		case PIPE_FORMAT_ETC2_SRGBA8:
			return V_008F14_IMG_DATA_FORMAT_ETC2_RGBA;
		case PIPE_FORMAT_ETC2_R11_UNORM:
		case PIPE_FORMAT_ETC2_R11_SNORM:
			return V_008F14_IMG_DATA_FORMAT_ETC2_R;
		case PIPE_FORMAT_ETC2_RG11_UNORM:
		case PIPE_FORMAT_ETC2_RG11_SNORM:
			return V_008F14_IMG_DATA_FORMAT_ETC2_RG;
		default:
			goto out_unknown;
		}
	}

	if (desc->layout == UTIL_FORMAT_LAYOUT_BPTC) {
		if (!enable_compressed_formats)
			goto out_unknown;

		switch (format) {
		case PIPE_FORMAT_BPTC_RGBA_UNORM:
		case PIPE_FORMAT_BPTC_SRGBA:
			return V_008F14_IMG_DATA_FORMAT_BC7;
		case PIPE_FORMAT_BPTC_RGB_FLOAT:
		case PIPE_FORMAT_BPTC_RGB_UFLOAT:
			return V_008F14_IMG_DATA_FORMAT_BC6;
		default:
			goto out_unknown;
		}
	}

	if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED) {
		switch (format) {
		case PIPE_FORMAT_R8G8_B8G8_UNORM:
		case PIPE_FORMAT_G8R8_B8R8_UNORM:
			return V_008F14_IMG_DATA_FORMAT_GB_GR;
		case PIPE_FORMAT_G8R8_G8B8_UNORM:
		case PIPE_FORMAT_R8G8_R8B8_UNORM:
			return V_008F14_IMG_DATA_FORMAT_BG_RG;
		default:
			goto out_unknown;
		}
	}

	if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
		if (!enable_compressed_formats)
			goto out_unknown;

		if (!util_format_s3tc_enabled) {
			goto out_unknown;
		}

		switch (format) {
		case PIPE_FORMAT_DXT1_RGB:
		case PIPE_FORMAT_DXT1_RGBA:
		case PIPE_FORMAT_DXT1_SRGB:
		case PIPE_FORMAT_DXT1_SRGBA:
			return V_008F14_IMG_DATA_FORMAT_BC1;
		case PIPE_FORMAT_DXT3_RGBA:
		case PIPE_FORMAT_DXT3_SRGBA:
			return V_008F14_IMG_DATA_FORMAT_BC2;
		case PIPE_FORMAT_DXT5_RGBA:
		case PIPE_FORMAT_DXT5_SRGBA:
			return V_008F14_IMG_DATA_FORMAT_BC3;
		default:
			goto out_unknown;
		}
	}

	if (format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
		return V_008F14_IMG_DATA_FORMAT_5_9_9_9;
	} else if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
		return V_008F14_IMG_DATA_FORMAT_10_11_11;
	}

	/* R8G8Bx_SNORM - TODO CxV8U8 */

	/* hw cannot support mixed formats (except depth/stencil, since only
	 * depth is read).*/
	if (desc->is_mixed && desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
		goto out_unknown;

	/* See whether the components are of the same size. */
	for (i = 1; i < desc->nr_channels; i++) {
		uniform = uniform && desc->channel[0].size == desc->channel[i].size;
	}

	/* Non-uniform formats. */
	if (!uniform) {
		switch(desc->nr_channels) {
		case 3:
			if (desc->channel[0].size == 5 &&
			    desc->channel[1].size == 6 &&
			    desc->channel[2].size == 5) {
				return V_008F14_IMG_DATA_FORMAT_5_6_5;
			}
			goto out_unknown;
		case 4:
			if (desc->channel[0].size == 5 &&
			    desc->channel[1].size == 5 &&
			    desc->channel[2].size == 5 &&
			    desc->channel[3].size == 1) {
				return V_008F14_IMG_DATA_FORMAT_1_5_5_5;
			}
			if (desc->channel[0].size == 10 &&
			    desc->channel[1].size == 10 &&
			    desc->channel[2].size == 10 &&
			    desc->channel[3].size == 2) {
				return V_008F14_IMG_DATA_FORMAT_2_10_10_10;
			}
			goto out_unknown;
		}
		goto out_unknown;
	}

	if (first_non_void < 0 || first_non_void > 3)
		goto out_unknown;

	/* uniform formats */
	switch (desc->channel[first_non_void].size) {
	case 4:
		switch (desc->nr_channels) {
#if 0 /* Not supported for render targets */
		case 2:
			return V_008F14_IMG_DATA_FORMAT_4_4;
#endif
		case 4:
			return V_008F14_IMG_DATA_FORMAT_4_4_4_4;
		}
		break;
	case 8:
		switch (desc->nr_channels) {
		case 1:
			return V_008F14_IMG_DATA_FORMAT_8;
		case 2:
			return V_008F14_IMG_DATA_FORMAT_8_8;
		case 4:
			return V_008F14_IMG_DATA_FORMAT_8_8_8_8;
		}
		break;
	case 16:
		switch (desc->nr_channels) {
		case 1:
			return V_008F14_IMG_DATA_FORMAT_16;
		case 2:
			return V_008F14_IMG_DATA_FORMAT_16_16;
		case 4:
			return V_008F14_IMG_DATA_FORMAT_16_16_16_16;
		}
		break;
	case 32:
		switch (desc->nr_channels) {
		case 1:
			return V_008F14_IMG_DATA_FORMAT_32;
		case 2:
			return V_008F14_IMG_DATA_FORMAT_32_32;
#if 0 /* Not supported for render targets */
		case 3:
			return V_008F14_IMG_DATA_FORMAT_32_32_32;
#endif
		case 4:
			return V_008F14_IMG_DATA_FORMAT_32_32_32_32;
		}
	}

out_unknown:
	/* R600_ERR("Unable to handle texformat %d %s\n", format, util_format_name(format)); */
	return ~0;
}

static unsigned si_tex_wrap(unsigned wrap)
{
	switch (wrap) {
	default:
	case PIPE_TEX_WRAP_REPEAT:
		return V_008F30_SQ_TEX_WRAP;
	case PIPE_TEX_WRAP_CLAMP:
		return V_008F30_SQ_TEX_CLAMP_HALF_BORDER;
	case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
		return V_008F30_SQ_TEX_CLAMP_LAST_TEXEL;
	case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
		return V_008F30_SQ_TEX_CLAMP_BORDER;
	case PIPE_TEX_WRAP_MIRROR_REPEAT:
		return V_008F30_SQ_TEX_MIRROR;
	case PIPE_TEX_WRAP_MIRROR_CLAMP:
		return V_008F30_SQ_TEX_MIRROR_ONCE_HALF_BORDER;
	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
		return V_008F30_SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
		return V_008F30_SQ_TEX_MIRROR_ONCE_BORDER;
	}
}

static unsigned si_tex_mipfilter(unsigned filter)
{
	switch (filter) {
	case PIPE_TEX_MIPFILTER_NEAREST:
		return V_008F38_SQ_TEX_Z_FILTER_POINT;
	case PIPE_TEX_MIPFILTER_LINEAR:
		return V_008F38_SQ_TEX_Z_FILTER_LINEAR;
	default:
	case PIPE_TEX_MIPFILTER_NONE:
		return V_008F38_SQ_TEX_Z_FILTER_NONE;
	}
}

static unsigned si_tex_compare(unsigned compare)
{
	switch (compare) {
	default:
	case PIPE_FUNC_NEVER:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_NEVER;
	case PIPE_FUNC_LESS:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_LESS;
	case PIPE_FUNC_EQUAL:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_EQUAL;
	case PIPE_FUNC_LEQUAL:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_LESSEQUAL;
	case PIPE_FUNC_GREATER:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_GREATER;
	case PIPE_FUNC_NOTEQUAL:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_NOTEQUAL;
	case PIPE_FUNC_GEQUAL:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_GREATEREQUAL;
	case PIPE_FUNC_ALWAYS:
		return V_008F30_SQ_TEX_DEPTH_COMPARE_ALWAYS;
	}
}

static unsigned si_tex_dim(unsigned res_target, unsigned view_target,
			   unsigned nr_samples)
{
	if (view_target == PIPE_TEXTURE_CUBE ||
	    view_target == PIPE_TEXTURE_CUBE_ARRAY)
		res_target = view_target;
	/* If interpreting cubemaps as something else, set 2D_ARRAY. */
	else if (res_target == PIPE_TEXTURE_CUBE ||
		 res_target == PIPE_TEXTURE_CUBE_ARRAY)
		res_target = PIPE_TEXTURE_2D_ARRAY;

	switch (res_target) {
	default:
	case PIPE_TEXTURE_1D:
		return V_008F1C_SQ_RSRC_IMG_1D;
	case PIPE_TEXTURE_1D_ARRAY:
		return V_008F1C_SQ_RSRC_IMG_1D_ARRAY;
	case PIPE_TEXTURE_2D:
	case PIPE_TEXTURE_RECT:
		return nr_samples > 1 ? V_008F1C_SQ_RSRC_IMG_2D_MSAA :
					V_008F1C_SQ_RSRC_IMG_2D;
	case PIPE_TEXTURE_2D_ARRAY:
		return nr_samples > 1 ? V_008F1C_SQ_RSRC_IMG_2D_MSAA_ARRAY :
					V_008F1C_SQ_RSRC_IMG_2D_ARRAY;
	case PIPE_TEXTURE_3D:
		return V_008F1C_SQ_RSRC_IMG_3D;
	case PIPE_TEXTURE_CUBE:
	case PIPE_TEXTURE_CUBE_ARRAY:
		return V_008F1C_SQ_RSRC_IMG_CUBE;
	}
}

/*
 * Format support testing
 */

static bool si_is_sampler_format_supported(struct pipe_screen *screen, enum pipe_format format)
{
	return si_translate_texformat(screen, format, util_format_description(format),
				      util_format_get_first_non_void_channel(format)) != ~0U;
}

static uint32_t si_translate_buffer_dataformat(struct pipe_screen *screen,
					       const struct util_format_description *desc,
					       int first_non_void)
{
	int i;

	if (desc->format == PIPE_FORMAT_R11G11B10_FLOAT)
		return V_008F0C_BUF_DATA_FORMAT_10_11_11;

	assert(first_non_void >= 0);

	if (desc->nr_channels == 4 &&
	    desc->channel[0].size == 10 &&
	    desc->channel[1].size == 10 &&
	    desc->channel[2].size == 10 &&
	    desc->channel[3].size == 2)
		return V_008F0C_BUF_DATA_FORMAT_2_10_10_10;

	/* See whether the components are of the same size. */
	for (i = 0; i < desc->nr_channels; i++) {
		if (desc->channel[first_non_void].size != desc->channel[i].size)
			return V_008F0C_BUF_DATA_FORMAT_INVALID;
	}

	switch (desc->channel[first_non_void].size) {
	case 8:
		switch (desc->nr_channels) {
		case 1:
			return V_008F0C_BUF_DATA_FORMAT_8;
		case 2:
			return V_008F0C_BUF_DATA_FORMAT_8_8;
		case 3:
		case 4:
			return V_008F0C_BUF_DATA_FORMAT_8_8_8_8;
		}
		break;
	case 16:
		switch (desc->nr_channels) {
		case 1:
			return V_008F0C_BUF_DATA_FORMAT_16;
		case 2:
			return V_008F0C_BUF_DATA_FORMAT_16_16;
		case 3:
		case 4:
			return V_008F0C_BUF_DATA_FORMAT_16_16_16_16;
		}
		break;
	case 32:
		switch (desc->nr_channels) {
		case 1:
			return V_008F0C_BUF_DATA_FORMAT_32;
		case 2:
			return V_008F0C_BUF_DATA_FORMAT_32_32;
		case 3:
			return V_008F0C_BUF_DATA_FORMAT_32_32_32;
		case 4:
			return V_008F0C_BUF_DATA_FORMAT_32_32_32_32;
		}
		break;
	}

	return V_008F0C_BUF_DATA_FORMAT_INVALID;
}

static uint32_t si_translate_buffer_numformat(struct pipe_screen *screen,
					      const struct util_format_description *desc,
					      int first_non_void)
{
	if (desc->format == PIPE_FORMAT_R11G11B10_FLOAT)
		return V_008F0C_BUF_NUM_FORMAT_FLOAT;

	assert(first_non_void >= 0);

	switch (desc->channel[first_non_void].type) {
	case UTIL_FORMAT_TYPE_SIGNED:
	case UTIL_FORMAT_TYPE_FIXED:
		if (desc->channel[first_non_void].size >= 32 ||
		    desc->channel[first_non_void].pure_integer)
			return V_008F0C_BUF_NUM_FORMAT_SINT;
		else if (desc->channel[first_non_void].normalized)
			return V_008F0C_BUF_NUM_FORMAT_SNORM;
		else
			return V_008F0C_BUF_NUM_FORMAT_SSCALED;
		break;
	case UTIL_FORMAT_TYPE_UNSIGNED:
		if (desc->channel[first_non_void].size >= 32 ||
		    desc->channel[first_non_void].pure_integer)
			return V_008F0C_BUF_NUM_FORMAT_UINT;
		else if (desc->channel[first_non_void].normalized)
			return V_008F0C_BUF_NUM_FORMAT_UNORM;
		else
			return V_008F0C_BUF_NUM_FORMAT_USCALED;
		break;
	case UTIL_FORMAT_TYPE_FLOAT:
	default:
		return V_008F0C_BUF_NUM_FORMAT_FLOAT;
	}
}

static unsigned si_is_vertex_format_supported(struct pipe_screen *screen,
					      enum pipe_format format,
					      unsigned usage)
{
	const struct util_format_description *desc;
	int first_non_void;
	unsigned data_format;

	assert((usage & ~(PIPE_BIND_SHADER_IMAGE |
			  PIPE_BIND_SAMPLER_VIEW |
			  PIPE_BIND_VERTEX_BUFFER)) == 0);

	desc = util_format_description(format);

	/* There are no native 8_8_8 or 16_16_16 data formats, and we currently
	 * select 8_8_8_8 and 16_16_16_16 instead. This works reasonably well
	 * for read-only access (with caveats surrounding bounds checks), but
	 * obviously fails for write access which we have to implement for
	 * shader images. Luckily, OpenGL doesn't expect this to be supported
	 * anyway, and so the only impact is on PBO uploads / downloads, which
	 * shouldn't be expected to be fast for GL_RGB anyway.
	 */
	if (desc->block.bits == 3 * 8 ||
	    desc->block.bits == 3 * 16) {
		if (usage & (PIPE_BIND_SHADER_IMAGE | PIPE_BIND_SAMPLER_VIEW)) {
		    usage &= ~(PIPE_BIND_SHADER_IMAGE | PIPE_BIND_SAMPLER_VIEW);
			if (!usage)
				return 0;
		}
	}

	first_non_void = util_format_get_first_non_void_channel(format);
	data_format = si_translate_buffer_dataformat(screen, desc, first_non_void);
	if (data_format == V_008F0C_BUF_DATA_FORMAT_INVALID)
		return 0;

	return usage;
}

static bool si_is_colorbuffer_format_supported(enum pipe_format format)
{
	return si_translate_colorformat(format) != V_028C70_COLOR_INVALID &&
		r600_translate_colorswap(format, false) != ~0U;
}

static bool si_is_zs_format_supported(enum pipe_format format)
{
	return si_translate_dbformat(format) != V_028040_Z_INVALID;
}

static boolean si_is_format_supported(struct pipe_screen *screen,
				      enum pipe_format format,
				      enum pipe_texture_target target,
				      unsigned sample_count,
				      unsigned usage)
{
	unsigned retval = 0;

	if (target >= PIPE_MAX_TEXTURE_TYPES) {
		R600_ERR("r600: unsupported texture type %d\n", target);
		return false;
	}

	if (!util_format_is_supported(format, usage))
		return false;

	if (sample_count > 1) {
		if (!screen->get_param(screen, PIPE_CAP_TEXTURE_MULTISAMPLE))
			return false;

		if (usage & PIPE_BIND_SHADER_IMAGE)
			return false;

		switch (sample_count) {
		case 2:
		case 4:
		case 8:
			break;
		case 16:
			if (format == PIPE_FORMAT_NONE)
				return true;
			else
				return false;
		default:
			return false;
		}
	}

	if (usage & (PIPE_BIND_SAMPLER_VIEW |
		     PIPE_BIND_SHADER_IMAGE)) {
		if (target == PIPE_BUFFER) {
			retval |= si_is_vertex_format_supported(
				screen, format, usage & (PIPE_BIND_SAMPLER_VIEW |
						         PIPE_BIND_SHADER_IMAGE));
		} else {
			if (si_is_sampler_format_supported(screen, format))
				retval |= usage & (PIPE_BIND_SAMPLER_VIEW |
						   PIPE_BIND_SHADER_IMAGE);
		}
	}

	if ((usage & (PIPE_BIND_RENDER_TARGET |
		      PIPE_BIND_DISPLAY_TARGET |
		      PIPE_BIND_SCANOUT |
		      PIPE_BIND_SHARED |
		      PIPE_BIND_BLENDABLE)) &&
	    si_is_colorbuffer_format_supported(format)) {
		retval |= usage &
			  (PIPE_BIND_RENDER_TARGET |
			   PIPE_BIND_DISPLAY_TARGET |
			   PIPE_BIND_SCANOUT |
			   PIPE_BIND_SHARED);
		if (!util_format_is_pure_integer(format) &&
		    !util_format_is_depth_or_stencil(format))
			retval |= usage & PIPE_BIND_BLENDABLE;
	}

	if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
	    si_is_zs_format_supported(format)) {
		retval |= PIPE_BIND_DEPTH_STENCIL;
	}

	if (usage & PIPE_BIND_VERTEX_BUFFER) {
		retval |= si_is_vertex_format_supported(screen, format,
							PIPE_BIND_VERTEX_BUFFER);
	}

	if ((usage & PIPE_BIND_LINEAR) &&
	    !util_format_is_compressed(format) &&
	    !(usage & PIPE_BIND_DEPTH_STENCIL))
		retval |= PIPE_BIND_LINEAR;

	return retval == usage;
}

/*
 * framebuffer handling
 */

static void si_choose_spi_color_formats(struct r600_surface *surf,
					unsigned format, unsigned swap,
					unsigned ntype, bool is_depth)
{
	/* Alpha is needed for alpha-to-coverage.
	 * Blending may be with or without alpha.
	 */
	unsigned normal = 0; /* most optimal, may not support blending or export alpha */
	unsigned alpha = 0; /* exports alpha, but may not support blending */
	unsigned blend = 0; /* supports blending, but may not export alpha */
	unsigned blend_alpha = 0; /* least optimal, supports blending and exports alpha */

	/* Choose the SPI color formats. These are required values for Stoney/RB+.
	 * Other chips have multiple choices, though they are not necessarily better.
	 */
	switch (format) {
	case V_028C70_COLOR_5_6_5:
	case V_028C70_COLOR_1_5_5_5:
	case V_028C70_COLOR_5_5_5_1:
	case V_028C70_COLOR_4_4_4_4:
	case V_028C70_COLOR_10_11_11:
	case V_028C70_COLOR_11_11_10:
	case V_028C70_COLOR_8:
	case V_028C70_COLOR_8_8:
	case V_028C70_COLOR_8_8_8_8:
	case V_028C70_COLOR_10_10_10_2:
	case V_028C70_COLOR_2_10_10_10:
		if (ntype == V_028C70_NUMBER_UINT)
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_UINT16_ABGR;
		else if (ntype == V_028C70_NUMBER_SINT)
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_SINT16_ABGR;
		else
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_FP16_ABGR;
		break;

	case V_028C70_COLOR_16:
	case V_028C70_COLOR_16_16:
	case V_028C70_COLOR_16_16_16_16:
		if (ntype == V_028C70_NUMBER_UNORM ||
		    ntype == V_028C70_NUMBER_SNORM) {
			/* UNORM16 and SNORM16 don't support blending */
			if (ntype == V_028C70_NUMBER_UNORM)
				normal = alpha = V_028714_SPI_SHADER_UNORM16_ABGR;
			else
				normal = alpha = V_028714_SPI_SHADER_SNORM16_ABGR;

			/* Use 32 bits per channel for blending. */
			if (format == V_028C70_COLOR_16) {
				if (swap == V_028C70_SWAP_STD) { /* R */
					blend = V_028714_SPI_SHADER_32_R;
					blend_alpha = V_028714_SPI_SHADER_32_AR;
				} else if (swap == V_028C70_SWAP_ALT_REV) /* A */
					blend = blend_alpha = V_028714_SPI_SHADER_32_AR;
				else
					assert(0);
			} else if (format == V_028C70_COLOR_16_16) {
				if (swap == V_028C70_SWAP_STD) { /* RG */
					blend = V_028714_SPI_SHADER_32_GR;
					blend_alpha = V_028714_SPI_SHADER_32_ABGR;
				} else if (swap == V_028C70_SWAP_ALT) /* RA */
					blend = blend_alpha = V_028714_SPI_SHADER_32_AR;
				else
					assert(0);
			} else /* 16_16_16_16 */
				blend = blend_alpha = V_028714_SPI_SHADER_32_ABGR;
		} else if (ntype == V_028C70_NUMBER_UINT)
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_UINT16_ABGR;
		else if (ntype == V_028C70_NUMBER_SINT)
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_SINT16_ABGR;
		else if (ntype == V_028C70_NUMBER_FLOAT)
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_FP16_ABGR;
		else
			assert(0);
		break;

	case V_028C70_COLOR_32:
		if (swap == V_028C70_SWAP_STD) { /* R */
			blend = normal = V_028714_SPI_SHADER_32_R;
			alpha = blend_alpha = V_028714_SPI_SHADER_32_AR;
		} else if (swap == V_028C70_SWAP_ALT_REV) /* A */
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_AR;
		else
			assert(0);
		break;

	case V_028C70_COLOR_32_32:
		if (swap == V_028C70_SWAP_STD) { /* RG */
			blend = normal = V_028714_SPI_SHADER_32_GR;
			alpha = blend_alpha = V_028714_SPI_SHADER_32_ABGR;
		} else if (swap == V_028C70_SWAP_ALT) /* RA */
			alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_AR;
		else
			assert(0);
		break;

	case V_028C70_COLOR_32_32_32_32:
	case V_028C70_COLOR_8_24:
	case V_028C70_COLOR_24_8:
	case V_028C70_COLOR_X24_8_32_FLOAT:
		alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_ABGR;
		break;

	default:
		assert(0);
		return;
	}

	/* The DB->CB copy needs 32_ABGR. */
	if (is_depth)
		alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_ABGR;

	surf->spi_shader_col_format = normal;
	surf->spi_shader_col_format_alpha = alpha;
	surf->spi_shader_col_format_blend = blend;
	surf->spi_shader_col_format_blend_alpha = blend_alpha;
}

static void si_initialize_color_surface(struct si_context *sctx,
					struct r600_surface *surf)
{
	struct r600_texture *rtex = (struct r600_texture*)surf->base.texture;
	unsigned color_info, color_attrib, color_view;
	unsigned format, swap, ntype, endian;
	const struct util_format_description *desc;
	int i;
	unsigned blend_clamp = 0, blend_bypass = 0;

	color_view = S_028C6C_SLICE_START(surf->base.u.tex.first_layer) |
		     S_028C6C_SLICE_MAX(surf->base.u.tex.last_layer);

	desc = util_format_description(surf->base.format);
	for (i = 0; i < 4; i++) {
		if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
			break;
		}
	}
	if (i == 4 || desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT) {
		ntype = V_028C70_NUMBER_FLOAT;
	} else {
		ntype = V_028C70_NUMBER_UNORM;
		if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB)
			ntype = V_028C70_NUMBER_SRGB;
		else if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
			if (desc->channel[i].pure_integer) {
				ntype = V_028C70_NUMBER_SINT;
			} else {
				assert(desc->channel[i].normalized);
				ntype = V_028C70_NUMBER_SNORM;
			}
		} else if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) {
			if (desc->channel[i].pure_integer) {
				ntype = V_028C70_NUMBER_UINT;
			} else {
				assert(desc->channel[i].normalized);
				ntype = V_028C70_NUMBER_UNORM;
			}
		}
	}

	format = si_translate_colorformat(surf->base.format);
	if (format == V_028C70_COLOR_INVALID) {
		R600_ERR("Invalid CB format: %d, disabling CB.\n", surf->base.format);
	}
	assert(format != V_028C70_COLOR_INVALID);
	swap = r600_translate_colorswap(surf->base.format, false);
	endian = si_colorformat_endian_swap(format);

	/* blend clamp should be set for all NORM/SRGB types */
	if (ntype == V_028C70_NUMBER_UNORM ||
	    ntype == V_028C70_NUMBER_SNORM ||
	    ntype == V_028C70_NUMBER_SRGB)
		blend_clamp = 1;

	/* set blend bypass according to docs if SINT/UINT or
	   8/24 COLOR variants */
	if (ntype == V_028C70_NUMBER_UINT || ntype == V_028C70_NUMBER_SINT ||
	    format == V_028C70_COLOR_8_24 || format == V_028C70_COLOR_24_8 ||
	    format == V_028C70_COLOR_X24_8_32_FLOAT) {
		blend_clamp = 0;
		blend_bypass = 1;
	}

	if ((ntype == V_028C70_NUMBER_UINT || ntype == V_028C70_NUMBER_SINT) &&
	    (format == V_028C70_COLOR_8 ||
	     format == V_028C70_COLOR_8_8 ||
	     format == V_028C70_COLOR_8_8_8_8))
		surf->color_is_int8 = true;

	color_info = S_028C70_FORMAT(format) |
		S_028C70_COMP_SWAP(swap) |
		S_028C70_BLEND_CLAMP(blend_clamp) |
		S_028C70_BLEND_BYPASS(blend_bypass) |
		S_028C70_SIMPLE_FLOAT(1) |
		S_028C70_ROUND_MODE(ntype != V_028C70_NUMBER_UNORM &&
				    ntype != V_028C70_NUMBER_SNORM &&
				    ntype != V_028C70_NUMBER_SRGB &&
				    format != V_028C70_COLOR_8_24 &&
				    format != V_028C70_COLOR_24_8) |
		S_028C70_NUMBER_TYPE(ntype) |
		S_028C70_ENDIAN(endian);

	/* Intensity is implemented as Red, so treat it that way. */
	color_attrib = S_028C74_FORCE_DST_ALPHA_1(desc->swizzle[3] == PIPE_SWIZZLE_1 ||
						  util_format_is_intensity(surf->base.format));

	if (rtex->resource.b.b.nr_samples > 1) {
		unsigned log_samples = util_logbase2(rtex->resource.b.b.nr_samples);

		color_attrib |= S_028C74_NUM_SAMPLES(log_samples) |
				S_028C74_NUM_FRAGMENTS(log_samples);

		if (rtex->fmask.size) {
			color_info |= S_028C70_COMPRESSION(1);
			unsigned fmask_bankh = util_logbase2(rtex->fmask.bank_height);

			if (sctx->b.chip_class == SI) {
				/* due to a hw bug, FMASK_BANK_HEIGHT must be set on SI too */
				color_attrib |= S_028C74_FMASK_BANK_HEIGHT(fmask_bankh);
			}
		}
	}

	surf->cb_color_view = color_view;
	surf->cb_color_info = color_info;
	surf->cb_color_attrib = color_attrib;

	if (sctx->b.chip_class >= VI) {
		unsigned max_uncompressed_block_size = 2;

		if (rtex->resource.b.b.nr_samples > 1) {
			if (rtex->surface.bpe == 1)
				max_uncompressed_block_size = 0;
			else if (rtex->surface.bpe == 2)
				max_uncompressed_block_size = 1;
		}

		surf->cb_dcc_control = S_028C78_MAX_UNCOMPRESSED_BLOCK_SIZE(max_uncompressed_block_size) |
		                       S_028C78_INDEPENDENT_64B_BLOCKS(1);
	}

	/* This must be set for fast clear to work without FMASK. */
	if (!rtex->fmask.size && sctx->b.chip_class == SI) {
		unsigned bankh = util_logbase2(rtex->surface.bankh);
		surf->cb_color_attrib |= S_028C74_FMASK_BANK_HEIGHT(bankh);
	}

	/* Determine pixel shader export format */
	si_choose_spi_color_formats(surf, format, swap, ntype, rtex->is_depth);

	surf->color_initialized = true;
}

static void si_init_depth_surface(struct si_context *sctx,
				  struct r600_surface *surf)
{
	struct r600_texture *rtex = (struct r600_texture*)surf->base.texture;
	unsigned level = surf->base.u.tex.level;
	struct radeon_surf_level *levelinfo = &rtex->surface.level[level];
	unsigned format;
	uint32_t z_info, s_info, db_depth_info;
	uint64_t z_offs, s_offs;
	uint32_t db_htile_data_base, db_htile_surface;

	format = si_translate_dbformat(rtex->db_render_format);

	if (format == V_028040_Z_INVALID) {
		R600_ERR("Invalid DB format: %d, disabling DB.\n", rtex->resource.b.b.format);
	}
	assert(format != V_028040_Z_INVALID);

	s_offs = z_offs = rtex->resource.gpu_address;
	z_offs += rtex->surface.level[level].offset;
	s_offs += rtex->surface.stencil_level[level].offset;

	db_depth_info = S_02803C_ADDR5_SWIZZLE_MASK(!rtex->tc_compatible_htile);

	z_info = S_028040_FORMAT(format);
	if (rtex->resource.b.b.nr_samples > 1) {
		z_info |= S_028040_NUM_SAMPLES(util_logbase2(rtex->resource.b.b.nr_samples));
	}

	if (rtex->surface.flags & RADEON_SURF_SBUFFER)
		s_info = S_028044_FORMAT(V_028044_STENCIL_8);
	else
		s_info = S_028044_FORMAT(V_028044_STENCIL_INVALID);

	if (sctx->b.chip_class >= CIK) {
		struct radeon_info *info = &sctx->screen->b.info;
		unsigned index = rtex->surface.tiling_index[level];
		unsigned stencil_index = rtex->surface.stencil_tiling_index[level];
		unsigned macro_index = rtex->surface.macro_tile_index;
		unsigned tile_mode = info->si_tile_mode_array[index];
		unsigned stencil_tile_mode = info->si_tile_mode_array[stencil_index];
		unsigned macro_mode = info->cik_macrotile_mode_array[macro_index];

		db_depth_info |=
			S_02803C_ARRAY_MODE(G_009910_ARRAY_MODE(tile_mode)) |
			S_02803C_PIPE_CONFIG(G_009910_PIPE_CONFIG(tile_mode)) |
			S_02803C_BANK_WIDTH(G_009990_BANK_WIDTH(macro_mode)) |
			S_02803C_BANK_HEIGHT(G_009990_BANK_HEIGHT(macro_mode)) |
			S_02803C_MACRO_TILE_ASPECT(G_009990_MACRO_TILE_ASPECT(macro_mode)) |
			S_02803C_NUM_BANKS(G_009990_NUM_BANKS(macro_mode));
		z_info |= S_028040_TILE_SPLIT(G_009910_TILE_SPLIT(tile_mode));
		s_info |= S_028044_TILE_SPLIT(G_009910_TILE_SPLIT(stencil_tile_mode));
	} else {
		unsigned tile_mode_index = si_tile_mode_index(rtex, level, false);
		z_info |= S_028040_TILE_MODE_INDEX(tile_mode_index);
		tile_mode_index = si_tile_mode_index(rtex, level, true);
		s_info |= S_028044_TILE_MODE_INDEX(tile_mode_index);
	}

	/* HiZ aka depth buffer htile */
	/* use htile only for first level */
	if (rtex->htile_buffer && !level) {
		z_info |= S_028040_TILE_SURFACE_ENABLE(1) |
			  S_028040_ALLOW_EXPCLEAR(1);

		if (rtex->surface.flags & RADEON_SURF_SBUFFER) {
			/* Workaround: For a not yet understood reason, the
			 * combination of MSAA, fast stencil clear and stencil
			 * decompress messes with subsequent stencil buffer
			 * uses. Problem was reproduced on Verde, Bonaire,
			 * Tonga, and Carrizo.
			 *
			 * Disabling EXPCLEAR works around the problem.
			 *
			 * Check piglit's arb_texture_multisample-stencil-clear
			 * test if you want to try changing this.
			 */
			if (rtex->resource.b.b.nr_samples <= 1)
				s_info |= S_028044_ALLOW_EXPCLEAR(1);
		} else if (!rtex->tc_compatible_htile) {
			/* Use all of the htile_buffer for depth if there's no stencil.
			 * This must not be set when TC-compatible HTILE is enabled
			 * due to a hw bug.
			 */
			s_info |= S_028044_TILE_STENCIL_DISABLE(1);
		}

		uint64_t va = rtex->htile_buffer->gpu_address;
		db_htile_data_base = va >> 8;
		db_htile_surface = S_028ABC_FULL_CACHE(1);

		if (rtex->tc_compatible_htile) {
			db_htile_surface |= S_028ABC_TC_COMPATIBLE(1);

			switch (rtex->resource.b.b.nr_samples) {
			case 0:
			case 1:
				z_info |= S_028040_DECOMPRESS_ON_N_ZPLANES(5);
				break;
			case 2:
			case 4:
				z_info |= S_028040_DECOMPRESS_ON_N_ZPLANES(3);
				break;
			case 8:
				z_info |= S_028040_DECOMPRESS_ON_N_ZPLANES(2);
				break;
			default:
				assert(0);
			}
		}
	} else {
		db_htile_data_base = 0;
		db_htile_surface = 0;
	}

	assert(levelinfo->nblk_x % 8 == 0 && levelinfo->nblk_y % 8 == 0);

	surf->db_depth_view = S_028008_SLICE_START(surf->base.u.tex.first_layer) |
			      S_028008_SLICE_MAX(surf->base.u.tex.last_layer);
	surf->db_htile_data_base = db_htile_data_base;
	surf->db_depth_info = db_depth_info;
	surf->db_z_info = z_info;
	surf->db_stencil_info = s_info;
	surf->db_depth_base = z_offs >> 8;
	surf->db_stencil_base = s_offs >> 8;
	surf->db_depth_size = S_028058_PITCH_TILE_MAX((levelinfo->nblk_x / 8) - 1) |
			      S_028058_HEIGHT_TILE_MAX((levelinfo->nblk_y / 8) - 1);
	surf->db_depth_slice = S_02805C_SLICE_TILE_MAX((levelinfo->nblk_x *
							levelinfo->nblk_y) / 64 - 1);
	surf->db_htile_surface = db_htile_surface;

	surf->depth_initialized = true;
}

static void si_dec_framebuffer_counters(const struct pipe_framebuffer_state *state)
{
	for (int i = 0; i < state->nr_cbufs; ++i) {
		struct r600_surface *surf = NULL;
		struct r600_texture *rtex;

		if (!state->cbufs[i])
			continue;
		surf = (struct r600_surface*)state->cbufs[i];
		rtex = (struct r600_texture*)surf->base.texture;

		p_atomic_dec(&rtex->framebuffers_bound);
	}
}

static void si_set_framebuffer_state(struct pipe_context *ctx,
				     const struct pipe_framebuffer_state *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	struct pipe_constant_buffer constbuf = {0};
	struct r600_surface *surf = NULL;
	struct r600_texture *rtex;
	bool old_any_dst_linear = sctx->framebuffer.any_dst_linear;
	unsigned old_nr_samples = sctx->framebuffer.nr_samples;
	int i;

	for (i = 0; i < sctx->framebuffer.state.nr_cbufs; i++) {
		if (!sctx->framebuffer.state.cbufs[i])
			continue;

		rtex = (struct r600_texture*)sctx->framebuffer.state.cbufs[i]->texture;
		if (rtex->dcc_gather_statistics)
			vi_separate_dcc_stop_query(ctx, rtex);
	}

	/* Only flush TC when changing the framebuffer state, because
	 * the only client not using TC that can change textures is
	 * the framebuffer.
	 *
	 * Flush all CB and DB caches here because all buffers can be used
	 * for write by both TC (with shader image stores) and CB/DB.
	 */
	sctx->b.flags |= SI_CONTEXT_INV_VMEM_L1 |
			 SI_CONTEXT_INV_GLOBAL_L2 |
			 SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER |
			 SI_CONTEXT_CS_PARTIAL_FLUSH;

	/* Take the maximum of the old and new count. If the new count is lower,
	 * dirtying is needed to disable the unbound colorbuffers.
	 */
	sctx->framebuffer.dirty_cbufs |=
		(1 << MAX2(sctx->framebuffer.state.nr_cbufs, state->nr_cbufs)) - 1;
	sctx->framebuffer.dirty_zsbuf |= sctx->framebuffer.state.zsbuf != state->zsbuf;

	si_dec_framebuffer_counters(&sctx->framebuffer.state);
	util_copy_framebuffer_state(&sctx->framebuffer.state, state);

	sctx->framebuffer.colorbuf_enabled_4bit = 0;
	sctx->framebuffer.spi_shader_col_format = 0;
	sctx->framebuffer.spi_shader_col_format_alpha = 0;
	sctx->framebuffer.spi_shader_col_format_blend = 0;
	sctx->framebuffer.spi_shader_col_format_blend_alpha = 0;
	sctx->framebuffer.color_is_int8 = 0;

	sctx->framebuffer.compressed_cb_mask = 0;
	sctx->framebuffer.nr_samples = util_framebuffer_get_num_samples(state);
	sctx->framebuffer.log_samples = util_logbase2(sctx->framebuffer.nr_samples);
	sctx->framebuffer.any_dst_linear = false;

	for (i = 0; i < state->nr_cbufs; i++) {
		if (!state->cbufs[i])
			continue;

		surf = (struct r600_surface*)state->cbufs[i];
		rtex = (struct r600_texture*)surf->base.texture;

		if (!surf->color_initialized) {
			si_initialize_color_surface(sctx, surf);
		}

		sctx->framebuffer.colorbuf_enabled_4bit |= 0xf << (i * 4);
		sctx->framebuffer.spi_shader_col_format |=
			surf->spi_shader_col_format << (i * 4);
		sctx->framebuffer.spi_shader_col_format_alpha |=
			surf->spi_shader_col_format_alpha << (i * 4);
		sctx->framebuffer.spi_shader_col_format_blend |=
			surf->spi_shader_col_format_blend << (i * 4);
		sctx->framebuffer.spi_shader_col_format_blend_alpha |=
			surf->spi_shader_col_format_blend_alpha << (i * 4);

		if (surf->color_is_int8)
			sctx->framebuffer.color_is_int8 |= 1 << i;

		if (rtex->fmask.size) {
			sctx->framebuffer.compressed_cb_mask |= 1 << i;
		}

		if (rtex->surface.is_linear)
			sctx->framebuffer.any_dst_linear = true;

		r600_context_add_resource_size(ctx, surf->base.texture);

		p_atomic_inc(&rtex->framebuffers_bound);

		if (rtex->dcc_gather_statistics) {
			/* Dirty tracking must be enabled for DCC usage analysis. */
			sctx->framebuffer.compressed_cb_mask |= 1 << i;
			vi_separate_dcc_start_query(ctx, rtex);
		}
	}

	if (state->zsbuf) {
		surf = (struct r600_surface*)state->zsbuf;
		rtex = (struct r600_texture*)surf->base.texture;

		if (!surf->depth_initialized) {
			si_init_depth_surface(sctx, surf);
		}
		r600_context_add_resource_size(ctx, surf->base.texture);
	}

	si_update_poly_offset_state(sctx);
	si_mark_atom_dirty(sctx, &sctx->cb_render_state);
	si_mark_atom_dirty(sctx, &sctx->framebuffer.atom);

	if (sctx->framebuffer.any_dst_linear != old_any_dst_linear)
		si_mark_atom_dirty(sctx, &sctx->msaa_config);

	if (sctx->framebuffer.nr_samples != old_nr_samples) {
		si_mark_atom_dirty(sctx, &sctx->msaa_config);
		si_mark_atom_dirty(sctx, &sctx->db_render_state);

		/* Set sample locations as fragment shader constants. */
		switch (sctx->framebuffer.nr_samples) {
		case 1:
			constbuf.user_buffer = sctx->b.sample_locations_1x;
			break;
		case 2:
			constbuf.user_buffer = sctx->b.sample_locations_2x;
			break;
		case 4:
			constbuf.user_buffer = sctx->b.sample_locations_4x;
			break;
		case 8:
			constbuf.user_buffer = sctx->b.sample_locations_8x;
			break;
		case 16:
			constbuf.user_buffer = sctx->b.sample_locations_16x;
			break;
		default:
			R600_ERR("Requested an invalid number of samples %i.\n",
				 sctx->framebuffer.nr_samples);
			assert(0);
		}
		constbuf.buffer_size = sctx->framebuffer.nr_samples * 2 * 4;
		si_set_rw_buffer(sctx, SI_PS_CONST_SAMPLE_POSITIONS, &constbuf);

		si_mark_atom_dirty(sctx, &sctx->msaa_sample_locs.atom);
	}

	sctx->need_check_render_feedback = true;
	sctx->do_update_shaders = true;
}

static void si_emit_framebuffer_state(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	struct pipe_framebuffer_state *state = &sctx->framebuffer.state;
	unsigned i, nr_cbufs = state->nr_cbufs;
	struct r600_texture *tex = NULL;
	struct r600_surface *cb = NULL;
	unsigned cb_color_info = 0;

	/* Colorbuffers. */
	for (i = 0; i < nr_cbufs; i++) {
		const struct radeon_surf_level *level_info;
		unsigned pitch_tile_max, slice_tile_max, tile_mode_index;
		unsigned cb_color_base, cb_color_fmask, cb_color_attrib;
		unsigned cb_color_pitch, cb_color_slice, cb_color_fmask_slice;

		if (!(sctx->framebuffer.dirty_cbufs & (1 << i)))
			continue;

		cb = (struct r600_surface*)state->cbufs[i];
		if (!cb) {
			radeon_set_context_reg(cs, R_028C70_CB_COLOR0_INFO + i * 0x3C,
					       S_028C70_FORMAT(V_028C70_COLOR_INVALID));
			continue;
		}

		tex = (struct r600_texture *)cb->base.texture;
		level_info =  &tex->surface.level[cb->base.u.tex.level];
		radeon_add_to_buffer_list(&sctx->b, &sctx->b.gfx,
				      &tex->resource, RADEON_USAGE_READWRITE,
				      tex->resource.b.b.nr_samples > 1 ?
					      RADEON_PRIO_COLOR_BUFFER_MSAA :
					      RADEON_PRIO_COLOR_BUFFER);

		if (tex->cmask_buffer && tex->cmask_buffer != &tex->resource) {
			radeon_add_to_buffer_list(&sctx->b, &sctx->b.gfx,
				tex->cmask_buffer, RADEON_USAGE_READWRITE,
				RADEON_PRIO_CMASK);
		}

		if (tex->dcc_separate_buffer)
			radeon_add_to_buffer_list(&sctx->b, &sctx->b.gfx,
						  tex->dcc_separate_buffer,
						  RADEON_USAGE_READWRITE,
						  RADEON_PRIO_DCC);

		/* Compute mutable surface parameters. */
		pitch_tile_max = level_info->nblk_x / 8 - 1;
		slice_tile_max = level_info->nblk_x *
				 level_info->nblk_y / 64 - 1;
		tile_mode_index = si_tile_mode_index(tex, cb->base.u.tex.level, false);

		cb_color_base = (tex->resource.gpu_address + level_info->offset) >> 8;
		cb_color_pitch = S_028C64_TILE_MAX(pitch_tile_max);
		cb_color_slice = S_028C68_TILE_MAX(slice_tile_max);
		cb_color_attrib = cb->cb_color_attrib |
				  S_028C74_TILE_MODE_INDEX(tile_mode_index);

		if (tex->fmask.size) {
			if (sctx->b.chip_class >= CIK)
				cb_color_pitch |= S_028C64_FMASK_TILE_MAX(tex->fmask.pitch_in_pixels / 8 - 1);
			cb_color_attrib |= S_028C74_FMASK_TILE_MODE_INDEX(tex->fmask.tile_mode_index);
			cb_color_fmask = (tex->resource.gpu_address + tex->fmask.offset) >> 8;
			cb_color_fmask_slice = S_028C88_TILE_MAX(tex->fmask.slice_tile_max);
		} else {
			/* This must be set for fast clear to work without FMASK. */
			if (sctx->b.chip_class >= CIK)
				cb_color_pitch |= S_028C64_FMASK_TILE_MAX(pitch_tile_max);
			cb_color_attrib |= S_028C74_FMASK_TILE_MODE_INDEX(tile_mode_index);
			cb_color_fmask = cb_color_base;
			cb_color_fmask_slice = S_028C88_TILE_MAX(slice_tile_max);
		}

		cb_color_info = cb->cb_color_info | tex->cb_color_info;

		if (tex->dcc_offset && cb->base.u.tex.level < tex->surface.num_dcc_levels) {
			bool is_msaa_resolve_dst = state->cbufs[0] &&
						   state->cbufs[0]->texture->nr_samples > 1 &&
						   state->cbufs[1] == &cb->base &&
						   state->cbufs[1]->texture->nr_samples <= 1;

			if (!is_msaa_resolve_dst)
				cb_color_info |= S_028C70_DCC_ENABLE(1);
		}

		radeon_set_context_reg_seq(cs, R_028C60_CB_COLOR0_BASE + i * 0x3C,
					   sctx->b.chip_class >= VI ? 14 : 13);
		radeon_emit(cs, cb_color_base);		/* R_028C60_CB_COLOR0_BASE */
		radeon_emit(cs, cb_color_pitch);	/* R_028C64_CB_COLOR0_PITCH */
		radeon_emit(cs, cb_color_slice);	/* R_028C68_CB_COLOR0_SLICE */
		radeon_emit(cs, cb->cb_color_view);	/* R_028C6C_CB_COLOR0_VIEW */
		radeon_emit(cs, cb_color_info);		/* R_028C70_CB_COLOR0_INFO */
		radeon_emit(cs, cb_color_attrib);	/* R_028C74_CB_COLOR0_ATTRIB */
		radeon_emit(cs, cb->cb_dcc_control);	/* R_028C78_CB_COLOR0_DCC_CONTROL */
		radeon_emit(cs, tex->cmask.base_address_reg);	/* R_028C7C_CB_COLOR0_CMASK */
		radeon_emit(cs, tex->cmask.slice_tile_max);	/* R_028C80_CB_COLOR0_CMASK_SLICE */
		radeon_emit(cs, cb_color_fmask);		/* R_028C84_CB_COLOR0_FMASK */
		radeon_emit(cs, cb_color_fmask_slice);		/* R_028C88_CB_COLOR0_FMASK_SLICE */
		radeon_emit(cs, tex->color_clear_value[0]);	/* R_028C8C_CB_COLOR0_CLEAR_WORD0 */
		radeon_emit(cs, tex->color_clear_value[1]);	/* R_028C90_CB_COLOR0_CLEAR_WORD1 */

		if (sctx->b.chip_class >= VI) /* R_028C94_CB_COLOR0_DCC_BASE */
			radeon_emit(cs, ((!tex->dcc_separate_buffer ? tex->resource.gpu_address : 0) +
					 tex->dcc_offset +
				         tex->surface.level[cb->base.u.tex.level].dcc_offset) >> 8);
	}
	for (; i < 8 ; i++)
		if (sctx->framebuffer.dirty_cbufs & (1 << i))
			radeon_set_context_reg(cs, R_028C70_CB_COLOR0_INFO + i * 0x3C, 0);

	/* ZS buffer. */
	if (state->zsbuf && sctx->framebuffer.dirty_zsbuf) {
		struct r600_surface *zb = (struct r600_surface*)state->zsbuf;
		struct r600_texture *rtex = (struct r600_texture*)zb->base.texture;

		radeon_add_to_buffer_list(&sctx->b, &sctx->b.gfx,
				      &rtex->resource, RADEON_USAGE_READWRITE,
				      zb->base.texture->nr_samples > 1 ?
					      RADEON_PRIO_DEPTH_BUFFER_MSAA :
					      RADEON_PRIO_DEPTH_BUFFER);

		if (zb->db_htile_data_base) {
			radeon_add_to_buffer_list(&sctx->b, &sctx->b.gfx,
					      rtex->htile_buffer, RADEON_USAGE_READWRITE,
					      RADEON_PRIO_HTILE);
		}

		radeon_set_context_reg(cs, R_028008_DB_DEPTH_VIEW, zb->db_depth_view);
		radeon_set_context_reg(cs, R_028014_DB_HTILE_DATA_BASE, zb->db_htile_data_base);

		radeon_set_context_reg_seq(cs, R_02803C_DB_DEPTH_INFO, 9);
		radeon_emit(cs, zb->db_depth_info);	/* R_02803C_DB_DEPTH_INFO */
		radeon_emit(cs, zb->db_z_info |		/* R_028040_DB_Z_INFO */
			    S_028040_ZRANGE_PRECISION(rtex->depth_clear_value != 0));
		radeon_emit(cs, zb->db_stencil_info);	/* R_028044_DB_STENCIL_INFO */
		radeon_emit(cs, zb->db_depth_base);	/* R_028048_DB_Z_READ_BASE */
		radeon_emit(cs, zb->db_stencil_base);	/* R_02804C_DB_STENCIL_READ_BASE */
		radeon_emit(cs, zb->db_depth_base);	/* R_028050_DB_Z_WRITE_BASE */
		radeon_emit(cs, zb->db_stencil_base);	/* R_028054_DB_STENCIL_WRITE_BASE */
		radeon_emit(cs, zb->db_depth_size);	/* R_028058_DB_DEPTH_SIZE */
		radeon_emit(cs, zb->db_depth_slice);	/* R_02805C_DB_DEPTH_SLICE */

		radeon_set_context_reg_seq(cs, R_028028_DB_STENCIL_CLEAR, 2);
		radeon_emit(cs, rtex->stencil_clear_value); /* R_028028_DB_STENCIL_CLEAR */
		radeon_emit(cs, fui(rtex->depth_clear_value)); /* R_02802C_DB_DEPTH_CLEAR */

		radeon_set_context_reg(cs, R_028ABC_DB_HTILE_SURFACE, zb->db_htile_surface);
	} else if (sctx->framebuffer.dirty_zsbuf) {
		radeon_set_context_reg_seq(cs, R_028040_DB_Z_INFO, 2);
		radeon_emit(cs, S_028040_FORMAT(V_028040_Z_INVALID)); /* R_028040_DB_Z_INFO */
		radeon_emit(cs, S_028044_FORMAT(V_028044_STENCIL_INVALID)); /* R_028044_DB_STENCIL_INFO */
	}

	/* Framebuffer dimensions. */
        /* PA_SC_WINDOW_SCISSOR_TL is set in si_init_config() */
	radeon_set_context_reg(cs, R_028208_PA_SC_WINDOW_SCISSOR_BR,
			       S_028208_BR_X(state->width) | S_028208_BR_Y(state->height));

	sctx->framebuffer.dirty_cbufs = 0;
	sctx->framebuffer.dirty_zsbuf = false;
}

static void si_emit_msaa_sample_locs(struct si_context *sctx,
				     struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	unsigned nr_samples = sctx->framebuffer.nr_samples;

	/* Smoothing (only possible with nr_samples == 1) uses the same
	 * sample locations as the MSAA it simulates.
	 */
	if (nr_samples <= 1 && sctx->smoothing_enabled)
		nr_samples = SI_NUM_SMOOTH_AA_SAMPLES;

	/* On Polaris, the small primitive filter uses the sample locations
	 * even when MSAA is off, so we need to make sure they're set to 0.
	 */
	if (sctx->b.family >= CHIP_POLARIS10)
		nr_samples = MAX2(nr_samples, 1);

	if (nr_samples >= 1 &&
	    (nr_samples != sctx->msaa_sample_locs.nr_samples)) {
		sctx->msaa_sample_locs.nr_samples = nr_samples;
		cayman_emit_msaa_sample_locs(cs, nr_samples);
	}

	if (sctx->b.family >= CHIP_POLARIS10) {
		struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
		unsigned small_prim_filter_cntl =
			S_028830_SMALL_PRIM_FILTER_ENABLE(1) |
			S_028830_LINE_FILTER_DISABLE(1); /* line bug */

		/* The alternative of setting sample locations to 0 would
		 * require a DB flush to avoid Z errors, see
		 * https://bugs.freedesktop.org/show_bug.cgi?id=96908
		 */
		if (sctx->framebuffer.nr_samples > 1 && rs && !rs->multisample_enable)
			small_prim_filter_cntl &= C_028830_SMALL_PRIM_FILTER_ENABLE;

		radeon_set_context_reg(cs, R_028830_PA_SU_SMALL_PRIM_FILTER_CNTL,
				       small_prim_filter_cntl);
	}
}

static void si_emit_msaa_config(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	unsigned num_tile_pipes = sctx->screen->b.info.num_tile_pipes;
	/* 33% faster rendering to linear color buffers */
	bool dst_is_linear = sctx->framebuffer.any_dst_linear;
	unsigned sc_mode_cntl_1 =
		S_028A4C_WALK_SIZE(dst_is_linear) |
		S_028A4C_WALK_FENCE_ENABLE(!dst_is_linear) |
		S_028A4C_WALK_FENCE_SIZE(num_tile_pipes == 2 ? 2 : 3) |
		/* always 1: */
		S_028A4C_WALK_ALIGN8_PRIM_FITS_ST(1) |
		S_028A4C_SUPERTILE_WALK_ORDER_ENABLE(1) |
		S_028A4C_TILE_WALK_ORDER_ENABLE(1) |
		S_028A4C_MULTI_SHADER_ENGINE_PRIM_DISCARD_ENABLE(1) |
		S_028A4C_FORCE_EOV_CNTDWN_ENABLE(1) |
		S_028A4C_FORCE_EOV_REZ_ENABLE(1);

	cayman_emit_msaa_config(cs, sctx->framebuffer.nr_samples,
				sctx->ps_iter_samples,
				sctx->smoothing_enabled ? SI_NUM_SMOOTH_AA_SAMPLES : 0,
				sc_mode_cntl_1);
}

static void si_set_min_samples(struct pipe_context *ctx, unsigned min_samples)
{
	struct si_context *sctx = (struct si_context *)ctx;

	if (sctx->ps_iter_samples == min_samples)
		return;

	sctx->ps_iter_samples = min_samples;
	sctx->do_update_shaders = true;

	if (sctx->framebuffer.nr_samples > 1)
		si_mark_atom_dirty(sctx, &sctx->msaa_config);
}

/*
 * Samplers
 */

/**
 * Build the sampler view descriptor for a buffer texture.
 * @param state 256-bit descriptor; only the high 128 bits are filled in
 */
void
si_make_buffer_descriptor(struct si_screen *screen, struct r600_resource *buf,
			  enum pipe_format format,
			  unsigned offset, unsigned size,
			  uint32_t *state)
{
	const struct util_format_description *desc;
	int first_non_void;
	unsigned stride;
	unsigned num_records;
	unsigned num_format, data_format;

	desc = util_format_description(format);
	first_non_void = util_format_get_first_non_void_channel(format);
	stride = desc->block.bits / 8;
	num_format = si_translate_buffer_numformat(&screen->b.b, desc, first_non_void);
	data_format = si_translate_buffer_dataformat(&screen->b.b, desc, first_non_void);

	num_records = size / stride;
	num_records = MIN2(num_records, (buf->b.b.width0 - offset) / stride);

	if (screen->b.chip_class >= VI)
		num_records *= stride;

	state[4] = 0;
	state[5] = S_008F04_STRIDE(stride);
	state[6] = num_records;
	state[7] = S_008F0C_DST_SEL_X(si_map_swizzle(desc->swizzle[0])) |
		   S_008F0C_DST_SEL_Y(si_map_swizzle(desc->swizzle[1])) |
		   S_008F0C_DST_SEL_Z(si_map_swizzle(desc->swizzle[2])) |
		   S_008F0C_DST_SEL_W(si_map_swizzle(desc->swizzle[3])) |
		   S_008F0C_NUM_FORMAT(num_format) |
		   S_008F0C_DATA_FORMAT(data_format);
}

/**
 * Build the sampler view descriptor for a texture.
 */
void
si_make_texture_descriptor(struct si_screen *screen,
			   struct r600_texture *tex,
			   bool sampler,
			   enum pipe_texture_target target,
			   enum pipe_format pipe_format,
			   const unsigned char state_swizzle[4],
			   unsigned first_level, unsigned last_level,
			   unsigned first_layer, unsigned last_layer,
			   unsigned width, unsigned height, unsigned depth,
			   uint32_t *state,
			   uint32_t *fmask_state)
{
	struct pipe_resource *res = &tex->resource.b.b;
	const struct util_format_description *desc;
	unsigned char swizzle[4];
	int first_non_void;
	unsigned num_format, data_format, type;
	uint64_t va;

	desc = util_format_description(pipe_format);

	if (desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) {
		const unsigned char swizzle_xxxx[4] = {0, 0, 0, 0};
		const unsigned char swizzle_yyyy[4] = {1, 1, 1, 1};
		const unsigned char swizzle_wwww[4] = {3, 3, 3, 3};

		switch (pipe_format) {
		case PIPE_FORMAT_S8_UINT_Z24_UNORM:
		case PIPE_FORMAT_X32_S8X24_UINT:
		case PIPE_FORMAT_X8Z24_UNORM:
			util_format_compose_swizzles(swizzle_yyyy, state_swizzle, swizzle);
			break;
		case PIPE_FORMAT_X24S8_UINT:
			/*
			 * X24S8 is implemented as an 8_8_8_8 data format, to
			 * fix texture gathers. This affects at least
			 * GL45-CTS.texture_cube_map_array.sampling on VI.
			 */
			util_format_compose_swizzles(swizzle_wwww, state_swizzle, swizzle);
			break;
		default:
			util_format_compose_swizzles(swizzle_xxxx, state_swizzle, swizzle);
		}
	} else {
		util_format_compose_swizzles(desc->swizzle, state_swizzle, swizzle);
	}

	first_non_void = util_format_get_first_non_void_channel(pipe_format);

	switch (pipe_format) {
	case PIPE_FORMAT_S8_UINT_Z24_UNORM:
		num_format = V_008F14_IMG_NUM_FORMAT_UNORM;
		break;
	default:
		if (first_non_void < 0) {
			if (util_format_is_compressed(pipe_format)) {
				switch (pipe_format) {
				case PIPE_FORMAT_DXT1_SRGB:
				case PIPE_FORMAT_DXT1_SRGBA:
				case PIPE_FORMAT_DXT3_SRGBA:
				case PIPE_FORMAT_DXT5_SRGBA:
				case PIPE_FORMAT_BPTC_SRGBA:
				case PIPE_FORMAT_ETC2_SRGB8:
				case PIPE_FORMAT_ETC2_SRGB8A1:
				case PIPE_FORMAT_ETC2_SRGBA8:
					num_format = V_008F14_IMG_NUM_FORMAT_SRGB;
					break;
				case PIPE_FORMAT_RGTC1_SNORM:
				case PIPE_FORMAT_LATC1_SNORM:
				case PIPE_FORMAT_RGTC2_SNORM:
				case PIPE_FORMAT_LATC2_SNORM:
				case PIPE_FORMAT_ETC2_R11_SNORM:
				case PIPE_FORMAT_ETC2_RG11_SNORM:
				/* implies float, so use SNORM/UNORM to determine
				   whether data is signed or not */
				case PIPE_FORMAT_BPTC_RGB_FLOAT:
					num_format = V_008F14_IMG_NUM_FORMAT_SNORM;
					break;
				default:
					num_format = V_008F14_IMG_NUM_FORMAT_UNORM;
					break;
				}
			} else if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED) {
				num_format = V_008F14_IMG_NUM_FORMAT_UNORM;
			} else {
				num_format = V_008F14_IMG_NUM_FORMAT_FLOAT;
			}
		} else if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
			num_format = V_008F14_IMG_NUM_FORMAT_SRGB;
		} else {
			num_format = V_008F14_IMG_NUM_FORMAT_UNORM;

			switch (desc->channel[first_non_void].type) {
			case UTIL_FORMAT_TYPE_FLOAT:
				num_format = V_008F14_IMG_NUM_FORMAT_FLOAT;
				break;
			case UTIL_FORMAT_TYPE_SIGNED:
				if (desc->channel[first_non_void].normalized)
					num_format = V_008F14_IMG_NUM_FORMAT_SNORM;
				else if (desc->channel[first_non_void].pure_integer)
					num_format = V_008F14_IMG_NUM_FORMAT_SINT;
				else
					num_format = V_008F14_IMG_NUM_FORMAT_SSCALED;
				break;
			case UTIL_FORMAT_TYPE_UNSIGNED:
				if (desc->channel[first_non_void].normalized)
					num_format = V_008F14_IMG_NUM_FORMAT_UNORM;
				else if (desc->channel[first_non_void].pure_integer)
					num_format = V_008F14_IMG_NUM_FORMAT_UINT;
				else
					num_format = V_008F14_IMG_NUM_FORMAT_USCALED;
			}
		}
	}

	data_format = si_translate_texformat(&screen->b.b, pipe_format, desc, first_non_void);
	if (data_format == ~0) {
		data_format = 0;
	}

	if (!sampler &&
	    (res->target == PIPE_TEXTURE_CUBE ||
	     res->target == PIPE_TEXTURE_CUBE_ARRAY ||
	     res->target == PIPE_TEXTURE_3D)) {
		/* For the purpose of shader images, treat cube maps and 3D
		 * textures as 2D arrays. For 3D textures, the address
		 * calculations for mipmaps are different, so we rely on the
		 * caller to effectively disable mipmaps.
		 */
		type = V_008F1C_SQ_RSRC_IMG_2D_ARRAY;

		assert(res->target != PIPE_TEXTURE_3D || (first_level == 0 && last_level == 0));
	} else {
		type = si_tex_dim(res->target, target, res->nr_samples);
	}

	if (type == V_008F1C_SQ_RSRC_IMG_1D_ARRAY) {
	        height = 1;
		depth = res->array_size;
	} else if (type == V_008F1C_SQ_RSRC_IMG_2D_ARRAY ||
		   type == V_008F1C_SQ_RSRC_IMG_2D_MSAA_ARRAY) {
		if (sampler || res->target != PIPE_TEXTURE_3D)
			depth = res->array_size;
	} else if (type == V_008F1C_SQ_RSRC_IMG_CUBE)
		depth = res->array_size / 6;

	state[0] = 0;
	state[1] = (S_008F14_DATA_FORMAT(data_format) |
		    S_008F14_NUM_FORMAT(num_format));
	state[2] = (S_008F18_WIDTH(width - 1) |
		    S_008F18_HEIGHT(height - 1) |
		    S_008F18_PERF_MOD(4));
	state[3] = (S_008F1C_DST_SEL_X(si_map_swizzle(swizzle[0])) |
		    S_008F1C_DST_SEL_Y(si_map_swizzle(swizzle[1])) |
		    S_008F1C_DST_SEL_Z(si_map_swizzle(swizzle[2])) |
		    S_008F1C_DST_SEL_W(si_map_swizzle(swizzle[3])) |
		    S_008F1C_BASE_LEVEL(res->nr_samples > 1 ?
					0 : first_level) |
		    S_008F1C_LAST_LEVEL(res->nr_samples > 1 ?
					util_logbase2(res->nr_samples) :
					last_level) |
		    S_008F1C_POW2_PAD(res->last_level > 0) |
		    S_008F1C_TYPE(type));
	state[4] = S_008F20_DEPTH(depth - 1);
	state[5] = (S_008F24_BASE_ARRAY(first_layer) |
		    S_008F24_LAST_ARRAY(last_layer));
	state[6] = 0;
	state[7] = 0;

	if (tex->dcc_offset) {
		unsigned swap = r600_translate_colorswap(pipe_format, false);

		state[6] = S_008F28_ALPHA_IS_ON_MSB(swap <= 1);
	} else {
		/* The last dword is unused by hw. The shader uses it to clear
		 * bits in the first dword of sampler state.
		 */
		if (screen->b.chip_class <= CIK && res->nr_samples <= 1) {
			if (first_level == last_level)
				state[7] = C_008F30_MAX_ANISO_RATIO;
			else
				state[7] = 0xffffffff;
		}
	}

	/* Initialize the sampler view for FMASK. */
	if (tex->fmask.size) {
		uint32_t fmask_format;

		va = tex->resource.gpu_address + tex->fmask.offset;

		switch (res->nr_samples) {
		case 2:
			fmask_format = V_008F14_IMG_DATA_FORMAT_FMASK8_S2_F2;
			break;
		case 4:
			fmask_format = V_008F14_IMG_DATA_FORMAT_FMASK8_S4_F4;
			break;
		case 8:
			fmask_format = V_008F14_IMG_DATA_FORMAT_FMASK32_S8_F8;
			break;
		default:
			assert(0);
			fmask_format = V_008F14_IMG_DATA_FORMAT_INVALID;
		}

		fmask_state[0] = va >> 8;
		fmask_state[1] = S_008F14_BASE_ADDRESS_HI(va >> 40) |
				 S_008F14_DATA_FORMAT(fmask_format) |
				 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_UINT);
		fmask_state[2] = S_008F18_WIDTH(width - 1) |
				 S_008F18_HEIGHT(height - 1);
		fmask_state[3] = S_008F1C_DST_SEL_X(V_008F1C_SQ_SEL_X) |
				 S_008F1C_DST_SEL_Y(V_008F1C_SQ_SEL_X) |
				 S_008F1C_DST_SEL_Z(V_008F1C_SQ_SEL_X) |
				 S_008F1C_DST_SEL_W(V_008F1C_SQ_SEL_X) |
				 S_008F1C_TILING_INDEX(tex->fmask.tile_mode_index) |
				 S_008F1C_TYPE(si_tex_dim(res->target, target, 0));
		fmask_state[4] = S_008F20_DEPTH(depth - 1) |
				 S_008F20_PITCH(tex->fmask.pitch_in_pixels - 1);
		fmask_state[5] = S_008F24_BASE_ARRAY(first_layer) |
				 S_008F24_LAST_ARRAY(last_layer);
		fmask_state[6] = 0;
		fmask_state[7] = 0;
	}
}

/**
 * Create a sampler view.
 *
 * @param ctx		context
 * @param texture	texture
 * @param state		sampler view template
 * @param width0	width0 override (for compressed textures as int)
 * @param height0	height0 override (for compressed textures as int)
 * @param force_level   set the base address to the level (for compressed textures)
 */
struct pipe_sampler_view *
si_create_sampler_view_custom(struct pipe_context *ctx,
			      struct pipe_resource *texture,
			      const struct pipe_sampler_view *state,
			      unsigned width0, unsigned height0,
			      unsigned force_level)
{
	struct si_context *sctx = (struct si_context*)ctx;
	struct si_sampler_view *view = CALLOC_STRUCT(si_sampler_view);
	struct r600_texture *tmp = (struct r600_texture*)texture;
	unsigned base_level, first_level, last_level;
	unsigned char state_swizzle[4];
	unsigned height, depth, width;
	unsigned last_layer = state->u.tex.last_layer;
	enum pipe_format pipe_format;
	const struct radeon_surf_level *surflevel;

	if (!view)
		return NULL;

	/* initialize base object */
	view->base = *state;
	view->base.texture = NULL;
	view->base.reference.count = 1;
	view->base.context = ctx;

	assert(texture);
	pipe_resource_reference(&view->base.texture, texture);

	if (state->format == PIPE_FORMAT_X24S8_UINT ||
	    state->format == PIPE_FORMAT_S8X24_UINT ||
	    state->format == PIPE_FORMAT_X32_S8X24_UINT ||
	    state->format == PIPE_FORMAT_S8_UINT)
		view->is_stencil_sampler = true;

	/* Buffer resource. */
	if (texture->target == PIPE_BUFFER) {
		si_make_buffer_descriptor(sctx->screen,
					  (struct r600_resource *)texture,
					  state->format,
					  state->u.buf.offset,
					  state->u.buf.size,
					  view->state);
		return &view->base;
	}

	state_swizzle[0] = state->swizzle_r;
	state_swizzle[1] = state->swizzle_g;
	state_swizzle[2] = state->swizzle_b;
	state_swizzle[3] = state->swizzle_a;

	base_level = 0;
	first_level = state->u.tex.first_level;
	last_level = state->u.tex.last_level;
	width = width0;
	height = height0;
	depth = texture->depth0;

	if (force_level) {
		assert(force_level == first_level &&
		       force_level == last_level);
		base_level = force_level;
		first_level = 0;
		last_level = 0;
		width = u_minify(width, force_level);
		height = u_minify(height, force_level);
		depth = u_minify(depth, force_level);
	}

	/* This is not needed if state trackers set last_layer correctly. */
	if (state->target == PIPE_TEXTURE_1D ||
	    state->target == PIPE_TEXTURE_2D ||
	    state->target == PIPE_TEXTURE_RECT ||
	    state->target == PIPE_TEXTURE_CUBE)
		last_layer = state->u.tex.first_layer;

	/* Texturing with separate depth and stencil. */
	pipe_format = state->format;

	/* Depth/stencil texturing sometimes needs separate texture. */
	if (tmp->is_depth && !r600_can_sample_zs(tmp, view->is_stencil_sampler)) {
		if (!tmp->flushed_depth_texture &&
		    !r600_init_flushed_depth_texture(ctx, texture, NULL)) {
			pipe_resource_reference(&view->base.texture, NULL);
			FREE(view);
			return NULL;
		}

		assert(tmp->flushed_depth_texture);

		/* Override format for the case where the flushed texture
		 * contains only Z or only S.
		 */
		if (tmp->flushed_depth_texture->resource.b.b.format != tmp->resource.b.b.format)
			pipe_format = tmp->flushed_depth_texture->resource.b.b.format;

		tmp = tmp->flushed_depth_texture;
	}

	surflevel = tmp->surface.level;

	if (tmp->db_compatible) {
		if (!view->is_stencil_sampler)
			pipe_format = tmp->db_render_format;

		switch (pipe_format) {
		case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
			pipe_format = PIPE_FORMAT_Z32_FLOAT;
			break;
		case PIPE_FORMAT_X8Z24_UNORM:
		case PIPE_FORMAT_S8_UINT_Z24_UNORM:
			/* Z24 is always stored like this for DB
			 * compatibility.
			 */
			pipe_format = PIPE_FORMAT_Z24X8_UNORM;
			break;
		case PIPE_FORMAT_X24S8_UINT:
		case PIPE_FORMAT_S8X24_UINT:
		case PIPE_FORMAT_X32_S8X24_UINT:
			pipe_format = PIPE_FORMAT_S8_UINT;
			surflevel = tmp->surface.stencil_level;
			break;
		default:;
		}
	}

	vi_dcc_disable_if_incompatible_format(&sctx->b, texture,
					      state->u.tex.first_level,
					      state->format);

	si_make_texture_descriptor(sctx->screen, tmp, true,
				   state->target, pipe_format, state_swizzle,
				   first_level, last_level,
				   state->u.tex.first_layer, last_layer,
				   width, height, depth,
				   view->state, view->fmask_state);

	view->base_level_info = &surflevel[base_level];
	view->base_level = base_level;
	view->block_width = util_format_get_blockwidth(pipe_format);
	return &view->base;
}

static struct pipe_sampler_view *
si_create_sampler_view(struct pipe_context *ctx,
		       struct pipe_resource *texture,
		       const struct pipe_sampler_view *state)
{
	return si_create_sampler_view_custom(ctx, texture, state,
					     texture ? texture->width0 : 0,
					     texture ? texture->height0 : 0, 0);
}

static void si_sampler_view_destroy(struct pipe_context *ctx,
				    struct pipe_sampler_view *state)
{
	struct si_sampler_view *view = (struct si_sampler_view *)state;

	pipe_resource_reference(&state->texture, NULL);
	FREE(view);
}

static bool wrap_mode_uses_border_color(unsigned wrap, bool linear_filter)
{
	return wrap == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
	       wrap == PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER ||
	       (linear_filter &&
	        (wrap == PIPE_TEX_WRAP_CLAMP ||
		 wrap == PIPE_TEX_WRAP_MIRROR_CLAMP));
}

static bool sampler_state_needs_border_color(const struct pipe_sampler_state *state)
{
	bool linear_filter = state->min_img_filter != PIPE_TEX_FILTER_NEAREST ||
			     state->mag_img_filter != PIPE_TEX_FILTER_NEAREST;

	return (state->border_color.ui[0] || state->border_color.ui[1] ||
		state->border_color.ui[2] || state->border_color.ui[3]) &&
	       (wrap_mode_uses_border_color(state->wrap_s, linear_filter) ||
		wrap_mode_uses_border_color(state->wrap_t, linear_filter) ||
		wrap_mode_uses_border_color(state->wrap_r, linear_filter));
}

static void *si_create_sampler_state(struct pipe_context *ctx,
				     const struct pipe_sampler_state *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	struct r600_common_screen *rscreen = sctx->b.screen;
	struct si_sampler_state *rstate = CALLOC_STRUCT(si_sampler_state);
	unsigned border_color_type, border_color_index = 0;
	unsigned max_aniso = rscreen->force_aniso >= 0 ? rscreen->force_aniso
						       : state->max_anisotropy;
	unsigned max_aniso_ratio = r600_tex_aniso_filter(max_aniso);

	if (!rstate) {
		return NULL;
	}

	if (!sampler_state_needs_border_color(state))
		border_color_type = V_008F3C_SQ_TEX_BORDER_COLOR_TRANS_BLACK;
	else if (state->border_color.f[0] == 0 &&
		 state->border_color.f[1] == 0 &&
		 state->border_color.f[2] == 0 &&
		 state->border_color.f[3] == 0)
		border_color_type = V_008F3C_SQ_TEX_BORDER_COLOR_TRANS_BLACK;
	else if (state->border_color.f[0] == 0 &&
		 state->border_color.f[1] == 0 &&
		 state->border_color.f[2] == 0 &&
		 state->border_color.f[3] == 1)
		border_color_type = V_008F3C_SQ_TEX_BORDER_COLOR_OPAQUE_BLACK;
	else if (state->border_color.f[0] == 1 &&
		 state->border_color.f[1] == 1 &&
		 state->border_color.f[2] == 1 &&
		 state->border_color.f[3] == 1)
		border_color_type = V_008F3C_SQ_TEX_BORDER_COLOR_OPAQUE_WHITE;
	else {
		int i;

		border_color_type = V_008F3C_SQ_TEX_BORDER_COLOR_REGISTER;

		/* Check if the border has been uploaded already. */
		for (i = 0; i < sctx->border_color_count; i++)
			if (memcmp(&sctx->border_color_table[i], &state->border_color,
				   sizeof(state->border_color)) == 0)
				break;

		if (i >= SI_MAX_BORDER_COLORS) {
			/* Getting 4096 unique border colors is very unlikely. */
			fprintf(stderr, "radeonsi: The border color table is full. "
				"Any new border colors will be just black. "
				"Please file a bug.\n");
			border_color_type = V_008F3C_SQ_TEX_BORDER_COLOR_TRANS_BLACK;
		} else {
			if (i == sctx->border_color_count) {
				/* Upload a new border color. */
				memcpy(&sctx->border_color_table[i], &state->border_color,
				       sizeof(state->border_color));
				util_memcpy_cpu_to_le32(&sctx->border_color_map[i],
							&state->border_color,
							sizeof(state->border_color));
				sctx->border_color_count++;
			}

			border_color_index = i;
		}
	}

#ifdef DEBUG
	rstate->magic = SI_SAMPLER_STATE_MAGIC;
#endif
	rstate->val[0] = (S_008F30_CLAMP_X(si_tex_wrap(state->wrap_s)) |
			  S_008F30_CLAMP_Y(si_tex_wrap(state->wrap_t)) |
			  S_008F30_CLAMP_Z(si_tex_wrap(state->wrap_r)) |
			  S_008F30_MAX_ANISO_RATIO(max_aniso_ratio) |
			  S_008F30_DEPTH_COMPARE_FUNC(si_tex_compare(state->compare_func)) |
			  S_008F30_FORCE_UNNORMALIZED(!state->normalized_coords) |
			  S_008F30_ANISO_THRESHOLD(max_aniso_ratio >> 1) |
			  S_008F30_ANISO_BIAS(max_aniso_ratio) |
			  S_008F30_DISABLE_CUBE_WRAP(!state->seamless_cube_map) |
			  S_008F30_COMPAT_MODE(sctx->b.chip_class >= VI));
	rstate->val[1] = (S_008F34_MIN_LOD(S_FIXED(CLAMP(state->min_lod, 0, 15), 8)) |
			  S_008F34_MAX_LOD(S_FIXED(CLAMP(state->max_lod, 0, 15), 8)) |
			  S_008F34_PERF_MIP(max_aniso_ratio ? max_aniso_ratio + 6 : 0));
	rstate->val[2] = (S_008F38_LOD_BIAS(S_FIXED(CLAMP(state->lod_bias, -16, 16), 8)) |
			  S_008F38_XY_MAG_FILTER(eg_tex_filter(state->mag_img_filter, max_aniso)) |
			  S_008F38_XY_MIN_FILTER(eg_tex_filter(state->min_img_filter, max_aniso)) |
			  S_008F38_MIP_FILTER(si_tex_mipfilter(state->min_mip_filter)) |
			  S_008F38_MIP_POINT_PRECLAMP(1) |
			  S_008F38_DISABLE_LSB_CEIL(1) |
			  S_008F38_FILTER_PREC_FIX(1) |
			  S_008F38_ANISO_OVERRIDE(sctx->b.chip_class >= VI));
	rstate->val[3] = S_008F3C_BORDER_COLOR_PTR(border_color_index) |
			 S_008F3C_BORDER_COLOR_TYPE(border_color_type);
	return rstate;
}

static void si_set_sample_mask(struct pipe_context *ctx, unsigned sample_mask)
{
	struct si_context *sctx = (struct si_context *)ctx;

	if (sctx->sample_mask.sample_mask == (uint16_t)sample_mask)
		return;

	sctx->sample_mask.sample_mask = sample_mask;
	si_mark_atom_dirty(sctx, &sctx->sample_mask.atom);
}

static void si_emit_sample_mask(struct si_context *sctx, struct r600_atom *atom)
{
	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
	unsigned mask = sctx->sample_mask.sample_mask;

	/* Needed for line and polygon smoothing as well as for the Polaris
	 * small primitive filter. We expect the state tracker to take care of
	 * this for us.
	 */
	assert(mask == 0xffff || sctx->framebuffer.nr_samples > 1 ||
	       (mask & 1 && sctx->blitter->running));

	radeon_set_context_reg_seq(cs, R_028C38_PA_SC_AA_MASK_X0Y0_X1Y0, 2);
	radeon_emit(cs, mask | (mask << 16));
	radeon_emit(cs, mask | (mask << 16));
}

static void si_delete_sampler_state(struct pipe_context *ctx, void *state)
{
#ifdef DEBUG
	struct si_sampler_state *s = state;

	assert(s->magic == SI_SAMPLER_STATE_MAGIC);
	s->magic = 0;
#endif
	free(state);
}

/*
 * Vertex elements & buffers
 */

static void *si_create_vertex_elements(struct pipe_context *ctx,
				       unsigned count,
				       const struct pipe_vertex_element *elements)
{
	struct si_vertex_element *v = CALLOC_STRUCT(si_vertex_element);
	bool used[SI_NUM_VERTEX_BUFFERS] = {};
	int i;

	assert(count <= SI_MAX_ATTRIBS);
	if (!v)
		return NULL;

	v->count = count;
	for (i = 0; i < count; ++i) {
		const struct util_format_description *desc;
		const struct util_format_channel_description *channel;
		unsigned data_format, num_format;
		int first_non_void;
		unsigned vbo_index = elements[i].vertex_buffer_index;

		if (vbo_index >= SI_NUM_VERTEX_BUFFERS) {
			FREE(v);
			return NULL;
		}

		if (!used[vbo_index]) {
			v->first_vb_use_mask |= 1 << i;
			used[vbo_index] = true;
		}

		desc = util_format_description(elements[i].src_format);
		first_non_void = util_format_get_first_non_void_channel(elements[i].src_format);
		data_format = si_translate_buffer_dataformat(ctx->screen, desc, first_non_void);
		num_format = si_translate_buffer_numformat(ctx->screen, desc, first_non_void);
		channel = first_non_void >= 0 ? &desc->channel[first_non_void] : NULL;

		v->rsrc_word3[i] = S_008F0C_DST_SEL_X(si_map_swizzle(desc->swizzle[0])) |
				   S_008F0C_DST_SEL_Y(si_map_swizzle(desc->swizzle[1])) |
				   S_008F0C_DST_SEL_Z(si_map_swizzle(desc->swizzle[2])) |
				   S_008F0C_DST_SEL_W(si_map_swizzle(desc->swizzle[3])) |
				   S_008F0C_NUM_FORMAT(num_format) |
				   S_008F0C_DATA_FORMAT(data_format);
		v->format_size[i] = desc->block.bits / 8;

		/* The hardware always treats the 2-bit alpha channel as
		 * unsigned, so a shader workaround is needed.
		 */
		if (data_format == V_008F0C_BUF_DATA_FORMAT_2_10_10_10) {
			if (num_format == V_008F0C_BUF_NUM_FORMAT_SNORM) {
				v->fix_fetch |= (uint64_t)SI_FIX_FETCH_A2_SNORM << (4 * i);
			} else if (num_format == V_008F0C_BUF_NUM_FORMAT_SSCALED) {
				v->fix_fetch |= (uint64_t)SI_FIX_FETCH_A2_SSCALED << (4 * i);
			} else if (num_format == V_008F0C_BUF_NUM_FORMAT_SINT) {
				/* This isn't actually used in OpenGL. */
				v->fix_fetch |= (uint64_t)SI_FIX_FETCH_A2_SINT << (4 * i);
			}
		} else if (channel && channel->type == UTIL_FORMAT_TYPE_FIXED) {
			if (desc->swizzle[3] == PIPE_SWIZZLE_1)
				v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBX_32_FIXED << (4 * i);
			else
				v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBA_32_FIXED << (4 * i);
		} else if (channel && channel->size == 32 && !channel->pure_integer) {
			if (channel->type == UTIL_FORMAT_TYPE_SIGNED) {
				if (channel->normalized) {
					if (desc->swizzle[3] == PIPE_SWIZZLE_1)
						v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBX_32_SNORM << (4 * i);
					else
						v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBA_32_SNORM << (4 * i);
				} else {
					v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBA_32_SSCALED << (4 * i);
				}
			} else if (channel->type == UTIL_FORMAT_TYPE_UNSIGNED) {
				if (channel->normalized) {
					if (desc->swizzle[3] == PIPE_SWIZZLE_1)
						v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBX_32_UNORM << (4 * i);
					else
						v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBA_32_UNORM << (4 * i);
				} else {
					v->fix_fetch |= (uint64_t)SI_FIX_FETCH_RGBA_32_USCALED << (4 * i);
				}
			}
		}

		/* We work around the fact that 8_8_8 and 16_16_16 data formats
		 * do not exist by using the corresponding 4-component formats.
		 * This requires a fixup of the descriptor for bounds checks.
		 */
		if (desc->block.bits == 3 * 8 ||
		    desc->block.bits == 3 * 16) {
			v->fix_size3 |= (desc->block.bits / 24) << (2 * i);
		}
	}
	memcpy(v->elements, elements, sizeof(struct pipe_vertex_element) * count);

	return v;
}

static void si_bind_vertex_elements(struct pipe_context *ctx, void *state)
{
	struct si_context *sctx = (struct si_context *)ctx;
	struct si_vertex_element *v = (struct si_vertex_element*)state;

	sctx->vertex_elements = v;
	sctx->vertex_buffers_dirty = true;
	sctx->do_update_shaders = true;
}

static void si_delete_vertex_element(struct pipe_context *ctx, void *state)
{
	struct si_context *sctx = (struct si_context *)ctx;

	if (sctx->vertex_elements == state)
		sctx->vertex_elements = NULL;
	FREE(state);
}

static void si_set_vertex_buffers(struct pipe_context *ctx,
				  unsigned start_slot, unsigned count,
				  const struct pipe_vertex_buffer *buffers)
{
	struct si_context *sctx = (struct si_context *)ctx;
	struct pipe_vertex_buffer *dst = sctx->vertex_buffer + start_slot;
	int i;

	assert(start_slot + count <= ARRAY_SIZE(sctx->vertex_buffer));

	if (buffers) {
		for (i = 0; i < count; i++) {
			const struct pipe_vertex_buffer *src = buffers + i;
			struct pipe_vertex_buffer *dsti = dst + i;
			struct pipe_resource *buf = src->buffer;

			pipe_resource_reference(&dsti->buffer, buf);
			dsti->buffer_offset = src->buffer_offset;
			dsti->stride = src->stride;
			r600_context_add_resource_size(ctx, buf);
			if (buf)
				r600_resource(buf)->bind_history |= PIPE_BIND_VERTEX_BUFFER;
		}
	} else {
		for (i = 0; i < count; i++) {
			pipe_resource_reference(&dst[i].buffer, NULL);
		}
	}
	sctx->vertex_buffers_dirty = true;
}

static void si_set_index_buffer(struct pipe_context *ctx,
				const struct pipe_index_buffer *ib)
{
	struct si_context *sctx = (struct si_context *)ctx;

	if (ib) {
		struct pipe_resource *buf = ib->buffer;

		pipe_resource_reference(&sctx->index_buffer.buffer, buf);
	        memcpy(&sctx->index_buffer, ib, sizeof(*ib));
		r600_context_add_resource_size(ctx, buf);
		if (buf)
			r600_resource(buf)->bind_history |= PIPE_BIND_INDEX_BUFFER;
	} else {
		pipe_resource_reference(&sctx->index_buffer.buffer, NULL);
	}
}

/*
 * Misc
 */

static void si_set_tess_state(struct pipe_context *ctx,
			      const float default_outer_level[4],
			      const float default_inner_level[2])
{
	struct si_context *sctx = (struct si_context *)ctx;
	struct pipe_constant_buffer cb;
	float array[8];

	memcpy(array, default_outer_level, sizeof(float) * 4);
	memcpy(array+4, default_inner_level, sizeof(float) * 2);

	cb.buffer = NULL;
	cb.user_buffer = NULL;
	cb.buffer_size = sizeof(array);

	si_upload_const_buffer(sctx, (struct r600_resource**)&cb.buffer,
			       (void*)array, sizeof(array),
			       &cb.buffer_offset);

	si_set_rw_buffer(sctx, SI_HS_CONST_DEFAULT_TESS_LEVELS, &cb);
	pipe_resource_reference(&cb.buffer, NULL);
}

static void si_texture_barrier(struct pipe_context *ctx, unsigned flags)
{
	struct si_context *sctx = (struct si_context *)ctx;

	sctx->b.flags |= SI_CONTEXT_INV_VMEM_L1 |
			 SI_CONTEXT_INV_GLOBAL_L2 |
			 SI_CONTEXT_FLUSH_AND_INV_CB;
}

/* This only ensures coherency for shader image/buffer stores. */
static void si_memory_barrier(struct pipe_context *ctx, unsigned flags)
{
	struct si_context *sctx = (struct si_context *)ctx;

	/* Subsequent commands must wait for all shader invocations to
	 * complete. */
	sctx->b.flags |= SI_CONTEXT_PS_PARTIAL_FLUSH |
	                 SI_CONTEXT_CS_PARTIAL_FLUSH;

	if (flags & PIPE_BARRIER_CONSTANT_BUFFER)
		sctx->b.flags |= SI_CONTEXT_INV_SMEM_L1 |
				 SI_CONTEXT_INV_VMEM_L1;

	if (flags & (PIPE_BARRIER_VERTEX_BUFFER |
		     PIPE_BARRIER_SHADER_BUFFER |
		     PIPE_BARRIER_TEXTURE |
		     PIPE_BARRIER_IMAGE |
		     PIPE_BARRIER_STREAMOUT_BUFFER |
		     PIPE_BARRIER_GLOBAL_BUFFER)) {
		/* As far as I can tell, L1 contents are written back to L2
		 * automatically at end of shader, but the contents of other
		 * L1 caches might still be stale. */
		sctx->b.flags |= SI_CONTEXT_INV_VMEM_L1;
	}

	if (flags & PIPE_BARRIER_INDEX_BUFFER) {
		/* Indices are read through TC L2 since VI.
		 * L1 isn't used.
		 */
		if (sctx->screen->b.chip_class <= CIK)
			sctx->b.flags |= SI_CONTEXT_WRITEBACK_GLOBAL_L2;
	}

	if (flags & PIPE_BARRIER_FRAMEBUFFER)
		sctx->b.flags |= SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER;

	if (flags & (PIPE_BARRIER_FRAMEBUFFER |
		     PIPE_BARRIER_INDIRECT_BUFFER))
		sctx->b.flags |= SI_CONTEXT_WRITEBACK_GLOBAL_L2;
}

static void *si_create_blend_custom(struct si_context *sctx, unsigned mode)
{
	struct pipe_blend_state blend;

	memset(&blend, 0, sizeof(blend));
	blend.independent_blend_enable = true;
	blend.rt[0].colormask = 0xf;
	return si_create_blend_state_mode(&sctx->b.b, &blend, mode);
}

static void si_need_gfx_cs_space(struct pipe_context *ctx, unsigned num_dw,
				 bool include_draw_vbo)
{
	si_need_cs_space((struct si_context*)ctx);
}

static void si_init_config(struct si_context *sctx);

void si_init_state_functions(struct si_context *sctx)
{
	si_init_external_atom(sctx, &sctx->b.render_cond_atom, &sctx->atoms.s.render_cond);
	si_init_external_atom(sctx, &sctx->b.streamout.begin_atom, &sctx->atoms.s.streamout_begin);
	si_init_external_atom(sctx, &sctx->b.streamout.enable_atom, &sctx->atoms.s.streamout_enable);
	si_init_external_atom(sctx, &sctx->b.scissors.atom, &sctx->atoms.s.scissors);
	si_init_external_atom(sctx, &sctx->b.viewports.atom, &sctx->atoms.s.viewports);

	si_init_atom(sctx, &sctx->framebuffer.atom, &sctx->atoms.s.framebuffer, si_emit_framebuffer_state);
	si_init_atom(sctx, &sctx->msaa_sample_locs.atom, &sctx->atoms.s.msaa_sample_locs, si_emit_msaa_sample_locs);
	si_init_atom(sctx, &sctx->db_render_state, &sctx->atoms.s.db_render_state, si_emit_db_render_state);
	si_init_atom(sctx, &sctx->msaa_config, &sctx->atoms.s.msaa_config, si_emit_msaa_config);
	si_init_atom(sctx, &sctx->sample_mask.atom, &sctx->atoms.s.sample_mask, si_emit_sample_mask);
	si_init_atom(sctx, &sctx->cb_render_state, &sctx->atoms.s.cb_render_state, si_emit_cb_render_state);
	si_init_atom(sctx, &sctx->blend_color.atom, &sctx->atoms.s.blend_color, si_emit_blend_color);
	si_init_atom(sctx, &sctx->clip_regs, &sctx->atoms.s.clip_regs, si_emit_clip_regs);
	si_init_atom(sctx, &sctx->clip_state.atom, &sctx->atoms.s.clip_state, si_emit_clip_state);
	si_init_atom(sctx, &sctx->stencil_ref.atom, &sctx->atoms.s.stencil_ref, si_emit_stencil_ref);

	sctx->b.b.create_blend_state = si_create_blend_state;
	sctx->b.b.bind_blend_state = si_bind_blend_state;
	sctx->b.b.delete_blend_state = si_delete_blend_state;
	sctx->b.b.set_blend_color = si_set_blend_color;

	sctx->b.b.create_rasterizer_state = si_create_rs_state;
	sctx->b.b.bind_rasterizer_state = si_bind_rs_state;
	sctx->b.b.delete_rasterizer_state = si_delete_rs_state;

	sctx->b.b.create_depth_stencil_alpha_state = si_create_dsa_state;
	sctx->b.b.bind_depth_stencil_alpha_state = si_bind_dsa_state;
	sctx->b.b.delete_depth_stencil_alpha_state = si_delete_dsa_state;

	sctx->custom_dsa_flush = si_create_db_flush_dsa(sctx);
	sctx->custom_blend_resolve = si_create_blend_custom(sctx, V_028808_CB_RESOLVE);
	sctx->custom_blend_decompress = si_create_blend_custom(sctx, V_028808_CB_FMASK_DECOMPRESS);
	sctx->custom_blend_fastclear = si_create_blend_custom(sctx, V_028808_CB_ELIMINATE_FAST_CLEAR);
	sctx->custom_blend_dcc_decompress = si_create_blend_custom(sctx, V_028808_CB_DCC_DECOMPRESS);

	sctx->b.b.set_clip_state = si_set_clip_state;
	sctx->b.b.set_stencil_ref = si_set_stencil_ref;

	sctx->b.b.set_framebuffer_state = si_set_framebuffer_state;
	sctx->b.b.get_sample_position = cayman_get_sample_position;

	sctx->b.b.create_sampler_state = si_create_sampler_state;
	sctx->b.b.delete_sampler_state = si_delete_sampler_state;

	sctx->b.b.create_sampler_view = si_create_sampler_view;
	sctx->b.b.sampler_view_destroy = si_sampler_view_destroy;

	sctx->b.b.set_sample_mask = si_set_sample_mask;

	sctx->b.b.create_vertex_elements_state = si_create_vertex_elements;
	sctx->b.b.bind_vertex_elements_state = si_bind_vertex_elements;
	sctx->b.b.delete_vertex_elements_state = si_delete_vertex_element;
	sctx->b.b.set_vertex_buffers = si_set_vertex_buffers;
	sctx->b.b.set_index_buffer = si_set_index_buffer;

	sctx->b.b.texture_barrier = si_texture_barrier;
	sctx->b.b.memory_barrier = si_memory_barrier;
	sctx->b.b.set_min_samples = si_set_min_samples;
	sctx->b.b.set_tess_state = si_set_tess_state;

	sctx->b.b.set_active_query_state = si_set_active_query_state;
	sctx->b.set_occlusion_query_state = si_set_occlusion_query_state;
	sctx->b.save_qbo_state = si_save_qbo_state;
	sctx->b.need_gfx_cs_space = si_need_gfx_cs_space;

	sctx->b.b.draw_vbo = si_draw_vbo;

	si_init_config(sctx);
}

static uint32_t si_get_bo_metadata_word1(struct r600_common_screen *rscreen)
{
	return (ATI_VENDOR_ID << 16) | rscreen->info.pci_id;
}

static void si_query_opaque_metadata(struct r600_common_screen *rscreen,
				     struct r600_texture *rtex,
			             struct radeon_bo_metadata *md)
{
	struct si_screen *sscreen = (struct si_screen*)rscreen;
	struct pipe_resource *res = &rtex->resource.b.b;
	static const unsigned char swizzle[] = {
		PIPE_SWIZZLE_X,
		PIPE_SWIZZLE_Y,
		PIPE_SWIZZLE_Z,
		PIPE_SWIZZLE_W
	};
	uint32_t desc[8], i;
	bool is_array = util_resource_is_array_texture(res);

	/* DRM 2.x.x doesn't support this. */
	if (rscreen->info.drm_major != 3)
		return;

	assert(rtex->dcc_separate_buffer == NULL);
	assert(rtex->fmask.size == 0);

	/* Metadata image format format version 1:
	 * [0] = 1 (metadata format identifier)
	 * [1] = (VENDOR_ID << 16) | PCI_ID
	 * [2:9] = image descriptor for the whole resource
	 *         [2] is always 0, because the base address is cleared
	 *         [9] is the DCC offset bits [39:8] from the beginning of
	 *             the buffer
	 * [10:10+LAST_LEVEL] = mipmap level offset bits [39:8] for each level
	 */

	md->metadata[0] = 1; /* metadata image format version 1 */

	/* TILE_MODE_INDEX is ambiguous without a PCI ID. */
	md->metadata[1] = si_get_bo_metadata_word1(rscreen);

	si_make_texture_descriptor(sscreen, rtex, true,
				   res->target, res->format,
				   swizzle, 0, res->last_level, 0,
				   is_array ? res->array_size - 1 : 0,
				   res->width0, res->height0, res->depth0,
				   desc, NULL);

	si_set_mutable_tex_desc_fields(rtex, &rtex->surface.level[0], 0, 0,
				       rtex->surface.blk_w, false, desc);

	/* Clear the base address and set the relative DCC offset. */
	desc[0] = 0;
	desc[1] &= C_008F14_BASE_ADDRESS_HI;
	desc[7] = rtex->dcc_offset >> 8;

	/* Dwords [2:9] contain the image descriptor. */
	memcpy(&md->metadata[2], desc, sizeof(desc));

	/* Dwords [10:..] contain the mipmap level offsets. */
	for (i = 0; i <= res->last_level; i++)
		md->metadata[10+i] = rtex->surface.level[i].offset >> 8;

	md->size_metadata = (11 + res->last_level) * 4;
}

static void si_apply_opaque_metadata(struct r600_common_screen *rscreen,
				     struct r600_texture *rtex,
			             struct radeon_bo_metadata *md)
{
	uint32_t *desc = &md->metadata[2];

	if (rscreen->chip_class < VI)
		return;

	/* Return if DCC is enabled. The texture should be set up with it
	 * already.
	 */
	if (md->size_metadata >= 11 * 4 &&
	    md->metadata[0] != 0 &&
	    md->metadata[1] == si_get_bo_metadata_word1(rscreen) &&
	    G_008F28_COMPRESSION_EN(desc[6])) {
		assert(rtex->dcc_offset == ((uint64_t)desc[7] << 8));
		return;
	}

	/* Disable DCC. These are always set by texture_from_handle and must
	 * be cleared here.
	 */
	rtex->dcc_offset = 0;
}

void si_init_screen_state_functions(struct si_screen *sscreen)
{
	sscreen->b.b.is_format_supported = si_is_format_supported;
	sscreen->b.query_opaque_metadata = si_query_opaque_metadata;
	sscreen->b.apply_opaque_metadata = si_apply_opaque_metadata;
}

static void
si_write_harvested_raster_configs(struct si_context *sctx,
				  struct si_pm4_state *pm4,
				  unsigned raster_config,
				  unsigned raster_config_1)
{
	unsigned sh_per_se = MAX2(sctx->screen->b.info.max_sh_per_se, 1);
	unsigned num_se = MAX2(sctx->screen->b.info.max_se, 1);
	unsigned rb_mask = sctx->screen->b.info.enabled_rb_mask;
	unsigned num_rb = MIN2(sctx->screen->b.info.num_render_backends, 16);
	unsigned rb_per_pkr = MIN2(num_rb / num_se / sh_per_se, 2);
	unsigned rb_per_se = num_rb / num_se;
	unsigned se_mask[4];
	unsigned se;

	se_mask[0] = ((1 << rb_per_se) - 1);
	se_mask[1] = (se_mask[0] << rb_per_se);
	se_mask[2] = (se_mask[1] << rb_per_se);
	se_mask[3] = (se_mask[2] << rb_per_se);

	se_mask[0] &= rb_mask;
	se_mask[1] &= rb_mask;
	se_mask[2] &= rb_mask;
	se_mask[3] &= rb_mask;

	assert(num_se == 1 || num_se == 2 || num_se == 4);
	assert(sh_per_se == 1 || sh_per_se == 2);
	assert(rb_per_pkr == 1 || rb_per_pkr == 2);

	/* XXX: I can't figure out what the *_XSEL and *_YSEL
	 * fields are for, so I'm leaving them as their default
	 * values. */

	for (se = 0; se < num_se; se++) {
		unsigned raster_config_se = raster_config;
		unsigned pkr0_mask = ((1 << rb_per_pkr) - 1) << (se * rb_per_se);
		unsigned pkr1_mask = pkr0_mask << rb_per_pkr;
		int idx = (se / 2) * 2;

		if ((num_se > 1) && (!se_mask[idx] || !se_mask[idx + 1])) {
			raster_config_se &= C_028350_SE_MAP;

			if (!se_mask[idx]) {
				raster_config_se |=
					S_028350_SE_MAP(V_028350_RASTER_CONFIG_SE_MAP_3);
			} else {
				raster_config_se |=
					S_028350_SE_MAP(V_028350_RASTER_CONFIG_SE_MAP_0);
			}
		}

		pkr0_mask &= rb_mask;
		pkr1_mask &= rb_mask;
		if (rb_per_se > 2 && (!pkr0_mask || !pkr1_mask)) {
			raster_config_se &= C_028350_PKR_MAP;

			if (!pkr0_mask) {
				raster_config_se |=
					S_028350_PKR_MAP(V_028350_RASTER_CONFIG_PKR_MAP_3);
			} else {
				raster_config_se |=
					S_028350_PKR_MAP(V_028350_RASTER_CONFIG_PKR_MAP_0);
			}
		}

		if (rb_per_se >= 2) {
			unsigned rb0_mask = 1 << (se * rb_per_se);
			unsigned rb1_mask = rb0_mask << 1;

			rb0_mask &= rb_mask;
			rb1_mask &= rb_mask;
			if (!rb0_mask || !rb1_mask) {
				raster_config_se &= C_028350_RB_MAP_PKR0;

				if (!rb0_mask) {
					raster_config_se |=
						S_028350_RB_MAP_PKR0(V_028350_RASTER_CONFIG_RB_MAP_3);
				} else {
					raster_config_se |=
						S_028350_RB_MAP_PKR0(V_028350_RASTER_CONFIG_RB_MAP_0);
				}
			}

			if (rb_per_se > 2) {
				rb0_mask = 1 << (se * rb_per_se + rb_per_pkr);
				rb1_mask = rb0_mask << 1;
				rb0_mask &= rb_mask;
				rb1_mask &= rb_mask;
				if (!rb0_mask || !rb1_mask) {
					raster_config_se &= C_028350_RB_MAP_PKR1;

					if (!rb0_mask) {
						raster_config_se |=
							S_028350_RB_MAP_PKR1(V_028350_RASTER_CONFIG_RB_MAP_3);
					} else {
						raster_config_se |=
							S_028350_RB_MAP_PKR1(V_028350_RASTER_CONFIG_RB_MAP_0);
					}
				}
			}
		}

		/* GRBM_GFX_INDEX has a different offset on SI and CI+ */
		if (sctx->b.chip_class < CIK)
			si_pm4_set_reg(pm4, GRBM_GFX_INDEX,
				       SE_INDEX(se) | SH_BROADCAST_WRITES |
				       INSTANCE_BROADCAST_WRITES);
		else
			si_pm4_set_reg(pm4, R_030800_GRBM_GFX_INDEX,
				       S_030800_SE_INDEX(se) | S_030800_SH_BROADCAST_WRITES(1) |
				       S_030800_INSTANCE_BROADCAST_WRITES(1));
		si_pm4_set_reg(pm4, R_028350_PA_SC_RASTER_CONFIG, raster_config_se);
	}

	/* GRBM_GFX_INDEX has a different offset on SI and CI+ */
	if (sctx->b.chip_class < CIK)
		si_pm4_set_reg(pm4, GRBM_GFX_INDEX,
			       SE_BROADCAST_WRITES | SH_BROADCAST_WRITES |
			       INSTANCE_BROADCAST_WRITES);
	else {
		si_pm4_set_reg(pm4, R_030800_GRBM_GFX_INDEX,
			       S_030800_SE_BROADCAST_WRITES(1) | S_030800_SH_BROADCAST_WRITES(1) |
			       S_030800_INSTANCE_BROADCAST_WRITES(1));

		if ((num_se > 2) && ((!se_mask[0] && !se_mask[1]) ||
		                     (!se_mask[2] && !se_mask[3]))) {
			raster_config_1 &= C_028354_SE_PAIR_MAP;

			if (!se_mask[0] && !se_mask[1]) {
				raster_config_1 |=
					S_028354_SE_PAIR_MAP(V_028354_RASTER_CONFIG_SE_PAIR_MAP_3);
			} else {
				raster_config_1 |=
					S_028354_SE_PAIR_MAP(V_028354_RASTER_CONFIG_SE_PAIR_MAP_0);
			}
		}

		si_pm4_set_reg(pm4, R_028354_PA_SC_RASTER_CONFIG_1, raster_config_1);
	}
}

static void si_init_config(struct si_context *sctx)
{
	struct si_screen *sscreen = sctx->screen;
	unsigned num_rb = MIN2(sctx->screen->b.info.num_render_backends, 16);
	unsigned rb_mask = sctx->screen->b.info.enabled_rb_mask;
	unsigned raster_config, raster_config_1;
	uint64_t border_color_va = sctx->border_color_buffer->gpu_address;
	struct si_pm4_state *pm4 = CALLOC_STRUCT(si_pm4_state);

	if (!pm4)
		return;

	si_pm4_cmd_begin(pm4, PKT3_CONTEXT_CONTROL);
	si_pm4_cmd_add(pm4, CONTEXT_CONTROL_LOAD_ENABLE(1));
	si_pm4_cmd_add(pm4, CONTEXT_CONTROL_SHADOW_ENABLE(1));
	si_pm4_cmd_end(pm4, false);

	si_pm4_set_reg(pm4, R_028A18_VGT_HOS_MAX_TESS_LEVEL, fui(64));
	si_pm4_set_reg(pm4, R_028A1C_VGT_HOS_MIN_TESS_LEVEL, fui(0));

	/* FIXME calculate these values somehow ??? */
	si_pm4_set_reg(pm4, R_028A54_VGT_GS_PER_ES, SI_GS_PER_ES);
	si_pm4_set_reg(pm4, R_028A58_VGT_ES_PER_GS, 0x40);
	si_pm4_set_reg(pm4, R_028A5C_VGT_GS_PER_VS, 0x2);

	si_pm4_set_reg(pm4, R_028A8C_VGT_PRIMITIVEID_RESET, 0x0);
	si_pm4_set_reg(pm4, R_028B28_VGT_STRMOUT_DRAW_OPAQUE_OFFSET, 0);

	si_pm4_set_reg(pm4, R_028B98_VGT_STRMOUT_BUFFER_CONFIG, 0x0);
	si_pm4_set_reg(pm4, R_028AB8_VGT_VTX_CNT_EN, 0x0);
	if (sctx->b.chip_class < CIK)
		si_pm4_set_reg(pm4, R_008A14_PA_CL_ENHANCE, S_008A14_NUM_CLIP_SEQ(3) |
			       S_008A14_CLIP_VTX_REORDER_ENA(1));

	si_pm4_set_reg(pm4, R_028BD4_PA_SC_CENTROID_PRIORITY_0, 0x76543210);
	si_pm4_set_reg(pm4, R_028BD8_PA_SC_CENTROID_PRIORITY_1, 0xfedcba98);

	si_pm4_set_reg(pm4, R_02882C_PA_SU_PRIM_FILTER_CNTL, 0);

	switch (sctx->screen->b.family) {
	case CHIP_TAHITI:
	case CHIP_PITCAIRN:
		raster_config = 0x2a00126a;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_VERDE:
		raster_config = 0x0000124a;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_OLAND:
		raster_config = 0x00000082;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_HAINAN:
		raster_config = 0x00000000;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_BONAIRE:
		raster_config = 0x16000012;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_HAWAII:
		raster_config = 0x3a00161a;
		raster_config_1 = 0x0000002e;
		break;
	case CHIP_FIJI:
		if (sscreen->b.info.cik_macrotile_mode_array[0] == 0x000000e8) {
			/* old kernels with old tiling config */
			raster_config = 0x16000012;
			raster_config_1 = 0x0000002a;
		} else {
			raster_config = 0x3a00161a;
			raster_config_1 = 0x0000002e;
		}
		break;
	case CHIP_POLARIS10:
		raster_config = 0x16000012;
		raster_config_1 = 0x0000002a;
		break;
	case CHIP_POLARIS11:
	case CHIP_POLARIS12:
		raster_config = 0x16000012;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_TONGA:
		raster_config = 0x16000012;
		raster_config_1 = 0x0000002a;
		break;
	case CHIP_ICELAND:
		if (num_rb == 1)
			raster_config = 0x00000000;
		else
			raster_config = 0x00000002;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_CARRIZO:
		raster_config = 0x00000002;
		raster_config_1 = 0x00000000;
		break;
	case CHIP_KAVERI:
		/* KV should be 0x00000002, but that causes problems with radeon */
		raster_config = 0x00000000; /* 0x00000002 */
		raster_config_1 = 0x00000000;
		break;
	case CHIP_KABINI:
	case CHIP_MULLINS:
	case CHIP_STONEY:
		raster_config = 0x00000000;
		raster_config_1 = 0x00000000;
		break;
	default:
		fprintf(stderr,
			"radeonsi: Unknown GPU, using 0 for raster_config\n");
		raster_config = 0x00000000;
		raster_config_1 = 0x00000000;
		break;
	}

	/* Always use the default config when all backends are enabled
	 * (or when we failed to determine the enabled backends).
	 */
	if (!rb_mask || util_bitcount(rb_mask) >= num_rb) {
		si_pm4_set_reg(pm4, R_028350_PA_SC_RASTER_CONFIG,
			       raster_config);
		if (sctx->b.chip_class >= CIK)
			si_pm4_set_reg(pm4, R_028354_PA_SC_RASTER_CONFIG_1,
				       raster_config_1);
	} else {
		si_write_harvested_raster_configs(sctx, pm4, raster_config, raster_config_1);
	}

	si_pm4_set_reg(pm4, R_028204_PA_SC_WINDOW_SCISSOR_TL, S_028204_WINDOW_OFFSET_DISABLE(1));
	si_pm4_set_reg(pm4, R_028240_PA_SC_GENERIC_SCISSOR_TL, S_028240_WINDOW_OFFSET_DISABLE(1));
	si_pm4_set_reg(pm4, R_028244_PA_SC_GENERIC_SCISSOR_BR,
		       S_028244_BR_X(16384) | S_028244_BR_Y(16384));
	si_pm4_set_reg(pm4, R_028030_PA_SC_SCREEN_SCISSOR_TL, 0);
	si_pm4_set_reg(pm4, R_028034_PA_SC_SCREEN_SCISSOR_BR,
		       S_028034_BR_X(16384) | S_028034_BR_Y(16384));

	si_pm4_set_reg(pm4, R_02820C_PA_SC_CLIPRECT_RULE, 0xFFFF);
	si_pm4_set_reg(pm4, R_028230_PA_SC_EDGERULE,
		       S_028230_ER_TRI(0xA) |
		       S_028230_ER_POINT(0xA) |
		       S_028230_ER_RECT(0xA) |
		       /* Required by DX10_DIAMOND_TEST_ENA: */
		       S_028230_ER_LINE_LR(0x1A) |
		       S_028230_ER_LINE_RL(0x26) |
		       S_028230_ER_LINE_TB(0xA) |
		       S_028230_ER_LINE_BT(0xA));
	/* PA_SU_HARDWARE_SCREEN_OFFSET must be 0 due to hw bug on SI */
	si_pm4_set_reg(pm4, R_028234_PA_SU_HARDWARE_SCREEN_OFFSET, 0);
	si_pm4_set_reg(pm4, R_028820_PA_CL_NANINF_CNTL, 0);
	si_pm4_set_reg(pm4, R_028AC0_DB_SRESULTS_COMPARE_STATE0, 0x0);
	si_pm4_set_reg(pm4, R_028AC4_DB_SRESULTS_COMPARE_STATE1, 0x0);
	si_pm4_set_reg(pm4, R_028AC8_DB_PRELOAD_CONTROL, 0x0);
	si_pm4_set_reg(pm4, R_02800C_DB_RENDER_OVERRIDE, 0);

	si_pm4_set_reg(pm4, R_028400_VGT_MAX_VTX_INDX, ~0);
	si_pm4_set_reg(pm4, R_028404_VGT_MIN_VTX_INDX, 0);
	si_pm4_set_reg(pm4, R_028408_VGT_INDX_OFFSET, 0);

	if (sctx->b.chip_class >= CIK) {
		/* If this is 0, Bonaire can hang even if GS isn't being used.
		 * Other chips are unaffected. These are suboptimal values,
		 * but we don't use on-chip GS.
		 */
		si_pm4_set_reg(pm4, R_028A44_VGT_GS_ONCHIP_CNTL,
			       S_028A44_ES_VERTS_PER_SUBGRP(64) |
			       S_028A44_GS_PRIMS_PER_SUBGRP(4));

		si_pm4_set_reg(pm4, R_00B51C_SPI_SHADER_PGM_RSRC3_LS, S_00B51C_CU_EN(0xffff));
		si_pm4_set_reg(pm4, R_00B41C_SPI_SHADER_PGM_RSRC3_HS, 0);
		si_pm4_set_reg(pm4, R_00B31C_SPI_SHADER_PGM_RSRC3_ES, S_00B31C_CU_EN(0xffff));
		si_pm4_set_reg(pm4, R_00B21C_SPI_SHADER_PGM_RSRC3_GS, S_00B21C_CU_EN(0xffff));

		if (sscreen->b.info.num_good_compute_units /
		    (sscreen->b.info.max_se * sscreen->b.info.max_sh_per_se) <= 4) {
			/* Too few available compute units per SH. Disallowing
			 * VS to run on CU0 could hurt us more than late VS
			 * allocation would help.
			 *
			 * LATE_ALLOC_VS = 2 is the highest safe number.
			 */
			si_pm4_set_reg(pm4, R_00B118_SPI_SHADER_PGM_RSRC3_VS, S_00B118_CU_EN(0xffff));
			si_pm4_set_reg(pm4, R_00B11C_SPI_SHADER_LATE_ALLOC_VS, S_00B11C_LIMIT(2));
		} else {
			/* Set LATE_ALLOC_VS == 31. It should be less than
			 * the number of scratch waves. Limitations:
			 * - VS can't execute on CU0.
			 * - If HS writes outputs to LDS, LS can't execute on CU0.
			 */
			si_pm4_set_reg(pm4, R_00B118_SPI_SHADER_PGM_RSRC3_VS, S_00B118_CU_EN(0xfffe));
			si_pm4_set_reg(pm4, R_00B11C_SPI_SHADER_LATE_ALLOC_VS, S_00B11C_LIMIT(31));
		}

		si_pm4_set_reg(pm4, R_00B01C_SPI_SHADER_PGM_RSRC3_PS, S_00B01C_CU_EN(0xffff));
	}

	if (sctx->b.chip_class >= VI) {
		unsigned vgt_tess_distribution;

		si_pm4_set_reg(pm4, R_028424_CB_DCC_CONTROL,
			       S_028424_OVERWRITE_COMBINER_MRT_SHARING_DISABLE(1) |
			       S_028424_OVERWRITE_COMBINER_WATERMARK(4));
		if (sctx->b.family < CHIP_POLARIS10)
			si_pm4_set_reg(pm4, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL, 30);
		si_pm4_set_reg(pm4, R_028C5C_VGT_OUT_DEALLOC_CNTL, 32);

		vgt_tess_distribution =
			S_028B50_ACCUM_ISOLINE(32) |
			S_028B50_ACCUM_TRI(11) |
			S_028B50_ACCUM_QUAD(11) |
			S_028B50_DONUT_SPLIT(16);

		/* Testing with Unigine Heaven extreme tesselation yielded best results
		 * with TRAP_SPLIT = 3.
		 */
		if (sctx->b.family == CHIP_FIJI ||
		    sctx->b.family >= CHIP_POLARIS10)
			vgt_tess_distribution |= S_028B50_TRAP_SPLIT(3);

		si_pm4_set_reg(pm4, R_028B50_VGT_TESS_DISTRIBUTION, vgt_tess_distribution);
	} else {
		si_pm4_set_reg(pm4, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL, 14);
		si_pm4_set_reg(pm4, R_028C5C_VGT_OUT_DEALLOC_CNTL, 16);
	}

	if (sctx->b.family == CHIP_STONEY)
		si_pm4_set_reg(pm4, R_028C40_PA_SC_SHADER_CONTROL, 0);

	si_pm4_set_reg(pm4, R_028080_TA_BC_BASE_ADDR, border_color_va >> 8);
	if (sctx->b.chip_class >= CIK)
		si_pm4_set_reg(pm4, R_028084_TA_BC_BASE_ADDR_HI, border_color_va >> 40);
	si_pm4_add_bo(pm4, sctx->border_color_buffer, RADEON_USAGE_READ,
		      RADEON_PRIO_BORDER_COLORS);

	si_pm4_upload_indirect_buffer(sctx, pm4);
	sctx->init_config = pm4;
}
