+++ /dev/null
-/*
- Copyright (C) Intel Corp. 2006. All Rights Reserved.
- Intel funded Tungsten Graphics to
- develop this 3D driver.
-
- 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 the rights to use, copy, modify, merge, publish,
- distribute, sublicense, 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 NONINFRINGEMENT.
- IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS 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:
- * Keith Whitwell <keithw@vmware.com>
- */
-
-/**
- * @file brw_sampler_state.c
- *
- * This file contains code for emitting SAMPLER_STATE structures, which
- * specifies filter modes, wrap modes, border color, and so on.
- */
-
-#include "brw_context.h"
-#include "brw_state.h"
-#include "brw_defines.h"
-#include "intel_batchbuffer.h"
-#include "intel_mipmap_tree.h"
-
-#include "main/macros.h"
-#include "main/samplerobj.h"
-#include "util/half_float.h"
-
-/**
- * Emit a 3DSTATE_SAMPLER_STATE_POINTERS_{VS,HS,GS,DS,PS} packet.
- */
-static void
-gen7_emit_sampler_state_pointers_xs(struct brw_context *brw,
- struct brw_stage_state *stage_state)
-{
- static const uint16_t packet_headers[] = {
- [MESA_SHADER_VERTEX] = _3DSTATE_SAMPLER_STATE_POINTERS_VS,
- [MESA_SHADER_TESS_CTRL] = _3DSTATE_SAMPLER_STATE_POINTERS_HS,
- [MESA_SHADER_TESS_EVAL] = _3DSTATE_SAMPLER_STATE_POINTERS_DS,
- [MESA_SHADER_GEOMETRY] = _3DSTATE_SAMPLER_STATE_POINTERS_GS,
- [MESA_SHADER_FRAGMENT] = _3DSTATE_SAMPLER_STATE_POINTERS_PS,
- };
-
- /* Ivybridge requires a workaround flush before VS packets. */
- if (brw->gen == 7 && !brw->is_haswell && !brw->is_baytrail &&
- stage_state->stage == MESA_SHADER_VERTEX) {
- gen7_emit_vs_workaround_flush(brw);
- }
-
- BEGIN_BATCH(2);
- OUT_BATCH(packet_headers[stage_state->stage] << 16 | (2 - 2));
- OUT_BATCH(stage_state->sampler_offset);
- ADVANCE_BATCH();
-}
-
-/**
- * Emit a SAMPLER_STATE structure, given all the fields.
- */
-void
-brw_emit_sampler_state(struct brw_context *brw,
- uint32_t *ss,
- uint32_t batch_offset_for_sampler_state,
- unsigned min_filter,
- unsigned mag_filter,
- unsigned mip_filter,
- unsigned max_anisotropy,
- unsigned address_rounding,
- unsigned wrap_s,
- unsigned wrap_t,
- unsigned wrap_r,
- unsigned base_level,
- unsigned min_lod,
- unsigned max_lod,
- int lod_bias,
- unsigned shadow_function,
- bool non_normalized_coordinates,
- uint32_t border_color_offset)
-{
- ss[0] = BRW_SAMPLER_LOD_PRECLAMP_ENABLE |
- SET_FIELD(mip_filter, BRW_SAMPLER_MIP_FILTER) |
- SET_FIELD(mag_filter, BRW_SAMPLER_MAG_FILTER) |
- SET_FIELD(min_filter, BRW_SAMPLER_MIN_FILTER);
-
- ss[2] = border_color_offset;
- if (brw->gen < 6) {
- ss[2] += brw->batch.bo->offset64; /* reloc */
- brw_emit_reloc(&brw->batch, batch_offset_for_sampler_state + 8,
- brw->batch.bo, border_color_offset,
- I915_GEM_DOMAIN_SAMPLER, 0);
- }
-
- ss[3] = SET_FIELD(max_anisotropy, BRW_SAMPLER_MAX_ANISOTROPY) |
- SET_FIELD(address_rounding, BRW_SAMPLER_ADDRESS_ROUNDING);
-
- if (brw->gen >= 7) {
- ss[0] |= SET_FIELD(lod_bias & 0x1fff, GEN7_SAMPLER_LOD_BIAS);
-
- if (min_filter == BRW_MAPFILTER_ANISOTROPIC)
- ss[0] |= GEN7_SAMPLER_EWA_ANISOTROPIC_ALGORITHM;
-
- ss[1] = SET_FIELD(min_lod, GEN7_SAMPLER_MIN_LOD) |
- SET_FIELD(max_lod, GEN7_SAMPLER_MAX_LOD) |
- SET_FIELD(shadow_function, GEN7_SAMPLER_SHADOW_FUNCTION);
-
- ss[3] |= SET_FIELD(wrap_s, BRW_SAMPLER_TCX_WRAP_MODE) |
- SET_FIELD(wrap_t, BRW_SAMPLER_TCY_WRAP_MODE) |
- SET_FIELD(wrap_r, BRW_SAMPLER_TCZ_WRAP_MODE);
-
- if (non_normalized_coordinates)
- ss[3] |= GEN7_SAMPLER_NON_NORMALIZED_COORDINATES;
- } else {
- ss[0] |= SET_FIELD(lod_bias & 0x7ff, GEN4_SAMPLER_LOD_BIAS) |
- SET_FIELD(shadow_function, GEN4_SAMPLER_SHADOW_FUNCTION);
-
- /* This field has existed since the original i965, but is declared MBZ
- * until Sandy Bridge. According to the PRM:
- *
- * "This was added to match OpenGL semantics"
- *
- * In particular, OpenGL allowed you to offset by 0.5 in certain cases
- * to get slightly better filtering. On Ivy Bridge and above, it
- * appears that this is added to RENDER_SURFACE_STATE::SurfaceMinLOD so
- * the right value is 0.0 or 0.5 (if you want the wacky behavior). On
- * Sandy Bridge, however, this sum does not seem to occur and you have
- * to set it to the actual base level of the texture.
- */
- if (brw->gen == 6)
- ss[0] |= SET_FIELD(base_level, BRW_SAMPLER_BASE_MIPLEVEL);
-
- if (brw->gen == 6 && min_filter != mag_filter)
- ss[0] |= GEN6_SAMPLER_MIN_MAG_NOT_EQUAL;
-
- ss[1] = SET_FIELD(min_lod, GEN4_SAMPLER_MIN_LOD) |
- SET_FIELD(max_lod, GEN4_SAMPLER_MAX_LOD) |
- SET_FIELD(wrap_s, BRW_SAMPLER_TCX_WRAP_MODE) |
- SET_FIELD(wrap_t, BRW_SAMPLER_TCY_WRAP_MODE) |
- SET_FIELD(wrap_r, BRW_SAMPLER_TCZ_WRAP_MODE);
-
- if (brw->gen >= 6 && non_normalized_coordinates)
- ss[3] |= GEN6_SAMPLER_NON_NORMALIZED_COORDINATES;
- }
-}
-
-static uint32_t
-translate_wrap_mode(struct brw_context *brw, GLenum wrap, bool using_nearest)
-{
- switch (wrap) {
- case GL_REPEAT:
- return BRW_TEXCOORDMODE_WRAP;
- case GL_CLAMP:
- /* GL_CLAMP is the weird mode where coordinates are clamped to
- * [0.0, 1.0], so linear filtering of coordinates outside of
- * [0.0, 1.0] give you half edge texel value and half border
- * color.
- *
- * Gen8+ supports this natively.
- */
- if (brw->gen >= 8)
- return GEN8_TEXCOORDMODE_HALF_BORDER;
-
- /* On Gen4-7.5, we clamp the coordinates in the fragment shader
- * and set clamp_border here, which gets the result desired.
- * We just use clamp(_to_edge) for nearest, because for nearest
- * clamping to 1.0 gives border color instead of the desired
- * edge texels.
- */
- if (using_nearest)
- return BRW_TEXCOORDMODE_CLAMP;
- else
- return BRW_TEXCOORDMODE_CLAMP_BORDER;
- case GL_CLAMP_TO_EDGE:
- return BRW_TEXCOORDMODE_CLAMP;
- case GL_CLAMP_TO_BORDER:
- return BRW_TEXCOORDMODE_CLAMP_BORDER;
- case GL_MIRRORED_REPEAT:
- return BRW_TEXCOORDMODE_MIRROR;
- case GL_MIRROR_CLAMP_TO_EDGE:
- return BRW_TEXCOORDMODE_MIRROR_ONCE;
- default:
- return BRW_TEXCOORDMODE_WRAP;
- }
-}
-
-/**
- * Return true if the given wrap mode requires the border color to exist.
- */
-static bool
-wrap_mode_needs_border_color(unsigned wrap_mode)
-{
- return wrap_mode == BRW_TEXCOORDMODE_CLAMP_BORDER ||
- wrap_mode == GEN8_TEXCOORDMODE_HALF_BORDER;
-}
-
-static bool
-has_component(mesa_format format, int i)
-{
- if (_mesa_is_format_color_format(format))
- return _mesa_format_has_color_component(format, i);
-
- /* depth and stencil have only one component */
- return i == 0;
-}
-
-/**
- * Upload SAMPLER_BORDER_COLOR_STATE.
- */
-static void
-upload_default_color(struct brw_context *brw,
- const struct gl_sampler_object *sampler,
- mesa_format format, GLenum base_format,
- bool is_integer_format, bool is_stencil_sampling,
- uint32_t *sdc_offset)
-{
- union gl_color_union color;
-
- switch (base_format) {
- case GL_DEPTH_COMPONENT:
- /* GL specs that border color for depth textures is taken from the
- * R channel, while the hardware uses A. Spam R into all the
- * channels for safety.
- */
- color.ui[0] = sampler->BorderColor.ui[0];
- color.ui[1] = sampler->BorderColor.ui[0];
- color.ui[2] = sampler->BorderColor.ui[0];
- color.ui[3] = sampler->BorderColor.ui[0];
- break;
- case GL_ALPHA:
- color.ui[0] = 0u;
- color.ui[1] = 0u;
- color.ui[2] = 0u;
- color.ui[3] = sampler->BorderColor.ui[3];
- break;
- case GL_INTENSITY:
- color.ui[0] = sampler->BorderColor.ui[0];
- color.ui[1] = sampler->BorderColor.ui[0];
- color.ui[2] = sampler->BorderColor.ui[0];
- color.ui[3] = sampler->BorderColor.ui[0];
- break;
- case GL_LUMINANCE:
- color.ui[0] = sampler->BorderColor.ui[0];
- color.ui[1] = sampler->BorderColor.ui[0];
- color.ui[2] = sampler->BorderColor.ui[0];
- color.ui[3] = float_as_int(1.0);
- break;
- case GL_LUMINANCE_ALPHA:
- color.ui[0] = sampler->BorderColor.ui[0];
- color.ui[1] = sampler->BorderColor.ui[0];
- color.ui[2] = sampler->BorderColor.ui[0];
- color.ui[3] = sampler->BorderColor.ui[3];
- break;
- default:
- color.ui[0] = sampler->BorderColor.ui[0];
- color.ui[1] = sampler->BorderColor.ui[1];
- color.ui[2] = sampler->BorderColor.ui[2];
- color.ui[3] = sampler->BorderColor.ui[3];
- break;
- }
-
- /* In some cases we use an RGBA surface format for GL RGB textures,
- * where we've initialized the A channel to 1.0. We also have to set
- * the border color alpha to 1.0 in that case.
- */
- if (base_format == GL_RGB)
- color.ui[3] = float_as_int(1.0);
-
- if (brw->gen >= 8) {
- /* On Broadwell, the border color is represented as four 32-bit floats,
- * integers, or unsigned values, interpreted according to the surface
- * format. This matches the sampler->BorderColor union exactly; just
- * memcpy the values.
- */
- uint32_t *sdc = brw_state_batch(brw, 4 * 4, 64, sdc_offset);
- memcpy(sdc, color.ui, 4 * 4);
- } else if (brw->is_haswell && (is_integer_format || is_stencil_sampling)) {
- /* Haswell's integer border color support is completely insane:
- * SAMPLER_BORDER_COLOR_STATE is 20 DWords. The first four are
- * for float colors. The next 12 DWords are MBZ and only exist to
- * pad it out to a 64 byte cacheline boundary. DWords 16-19 then
- * contain integer colors; these are only used if SURFACE_STATE
- * has the "Integer Surface Format" bit set. Even then, the
- * arrangement of the RGBA data devolves into madness.
- */
- uint32_t *sdc = brw_state_batch(brw, 20 * 4, 512, sdc_offset);
- memset(sdc, 0, 20 * 4);
- sdc = &sdc[16];
-
- bool stencil = format == MESA_FORMAT_S_UINT8 || is_stencil_sampling;
- const int bits_per_channel =
- _mesa_get_format_bits(format, stencil ? GL_STENCIL_BITS : GL_RED_BITS);
-
- /* From the Haswell PRM, "Command Reference: Structures", Page 36:
- * "If any color channel is missing from the surface format,
- * corresponding border color should be programmed as zero and if
- * alpha channel is missing, corresponding Alpha border color should
- * be programmed as 1."
- */
- unsigned c[4] = { 0, 0, 0, 1 };
- for (int i = 0; i < 4; i++) {
- if (has_component(format, i))
- c[i] = color.ui[i];
- }
-
- switch (bits_per_channel) {
- case 8:
- /* Copy RGBA in order. */
- for (int i = 0; i < 4; i++)
- ((uint8_t *) sdc)[i] = c[i];
- break;
- case 10:
- /* R10G10B10A2_UINT is treated like a 16-bit format. */
- case 16:
- ((uint16_t *) sdc)[0] = c[0]; /* R -> DWord 0, bits 15:0 */
- ((uint16_t *) sdc)[1] = c[1]; /* G -> DWord 0, bits 31:16 */
- /* DWord 1 is Reserved/MBZ! */
- ((uint16_t *) sdc)[4] = c[2]; /* B -> DWord 2, bits 15:0 */
- ((uint16_t *) sdc)[5] = c[3]; /* A -> DWord 3, bits 31:16 */
- break;
- case 32:
- if (base_format == GL_RG) {
- /* Careful inspection of the tables reveals that for RG32 formats,
- * the green channel needs to go where blue normally belongs.
- */
- sdc[0] = c[0];
- sdc[2] = c[1];
- sdc[3] = 1;
- } else {
- /* Copy RGBA in order. */
- for (int i = 0; i < 4; i++)
- sdc[i] = c[i];
- }
- break;
- default:
- assert(!"Invalid number of bits per channel in integer format.");
- break;
- }
- } else if (brw->gen == 5 || brw->gen == 6) {
- struct gen5_sampler_default_color *sdc;
-
- sdc = brw_state_batch(brw, sizeof(*sdc), 32, sdc_offset);
-
- memset(sdc, 0, sizeof(*sdc));
-
- UNCLAMPED_FLOAT_TO_UBYTE(sdc->ub[0], color.f[0]);
- UNCLAMPED_FLOAT_TO_UBYTE(sdc->ub[1], color.f[1]);
- UNCLAMPED_FLOAT_TO_UBYTE(sdc->ub[2], color.f[2]);
- UNCLAMPED_FLOAT_TO_UBYTE(sdc->ub[3], color.f[3]);
-
- UNCLAMPED_FLOAT_TO_USHORT(sdc->us[0], color.f[0]);
- UNCLAMPED_FLOAT_TO_USHORT(sdc->us[1], color.f[1]);
- UNCLAMPED_FLOAT_TO_USHORT(sdc->us[2], color.f[2]);
- UNCLAMPED_FLOAT_TO_USHORT(sdc->us[3], color.f[3]);
-
- UNCLAMPED_FLOAT_TO_SHORT(sdc->s[0], color.f[0]);
- UNCLAMPED_FLOAT_TO_SHORT(sdc->s[1], color.f[1]);
- UNCLAMPED_FLOAT_TO_SHORT(sdc->s[2], color.f[2]);
- UNCLAMPED_FLOAT_TO_SHORT(sdc->s[3], color.f[3]);
-
- sdc->hf[0] = _mesa_float_to_half(color.f[0]);
- sdc->hf[1] = _mesa_float_to_half(color.f[1]);
- sdc->hf[2] = _mesa_float_to_half(color.f[2]);
- sdc->hf[3] = _mesa_float_to_half(color.f[3]);
-
- sdc->b[0] = sdc->s[0] >> 8;
- sdc->b[1] = sdc->s[1] >> 8;
- sdc->b[2] = sdc->s[2] >> 8;
- sdc->b[3] = sdc->s[3] >> 8;
-
- sdc->f[0] = color.f[0];
- sdc->f[1] = color.f[1];
- sdc->f[2] = color.f[2];
- sdc->f[3] = color.f[3];
- } else {
- float *sdc = brw_state_batch(brw, 4 * 4, 32, sdc_offset);
- memcpy(sdc, color.f, 4 * 4);
- }
-}
-
-/**
- * Sets the sampler state for a single unit based off of the sampler key
- * entry.
- */
-static void
-brw_update_sampler_state(struct brw_context *brw,
- GLenum target, bool tex_cube_map_seamless,
- GLfloat tex_unit_lod_bias,
- mesa_format format, GLenum base_format,
- const struct gl_texture_object *texObj,
- const struct gl_sampler_object *sampler,
- uint32_t *sampler_state,
- uint32_t batch_offset_for_sampler_state)
-{
- unsigned min_filter, mag_filter, mip_filter;
-
- /* Select min and mip filters. */
- switch (sampler->MinFilter) {
- case GL_NEAREST:
- min_filter = BRW_MAPFILTER_NEAREST;
- mip_filter = BRW_MIPFILTER_NONE;
- break;
- case GL_LINEAR:
- min_filter = BRW_MAPFILTER_LINEAR;
- mip_filter = BRW_MIPFILTER_NONE;
- break;
- case GL_NEAREST_MIPMAP_NEAREST:
- min_filter = BRW_MAPFILTER_NEAREST;
- mip_filter = BRW_MIPFILTER_NEAREST;
- break;
- case GL_LINEAR_MIPMAP_NEAREST:
- min_filter = BRW_MAPFILTER_LINEAR;
- mip_filter = BRW_MIPFILTER_NEAREST;
- break;
- case GL_NEAREST_MIPMAP_LINEAR:
- min_filter = BRW_MAPFILTER_NEAREST;
- mip_filter = BRW_MIPFILTER_LINEAR;
- break;
- case GL_LINEAR_MIPMAP_LINEAR:
- min_filter = BRW_MAPFILTER_LINEAR;
- mip_filter = BRW_MIPFILTER_LINEAR;
- break;
- default:
- unreachable("not reached");
- }
-
- /* Select mag filter. */
- if (sampler->MagFilter == GL_LINEAR)
- mag_filter = BRW_MAPFILTER_LINEAR;
- else
- mag_filter = BRW_MAPFILTER_NEAREST;
-
- /* Enable anisotropic filtering if desired. */
- unsigned max_anisotropy = BRW_ANISORATIO_2;
- if (sampler->MaxAnisotropy > 1.0f) {
- if (min_filter == BRW_MAPFILTER_LINEAR)
- min_filter = BRW_MAPFILTER_ANISOTROPIC;
- if (mag_filter == BRW_MAPFILTER_LINEAR)
- mag_filter = BRW_MAPFILTER_ANISOTROPIC;
-
- if (sampler->MaxAnisotropy > 2.0f) {
- max_anisotropy =
- MIN2((sampler->MaxAnisotropy - 2) / 2, BRW_ANISORATIO_16);
- }
- }
-
- /* Set address rounding bits if not using nearest filtering. */
- unsigned address_rounding = 0;
- if (min_filter != BRW_MAPFILTER_NEAREST) {
- address_rounding |= BRW_ADDRESS_ROUNDING_ENABLE_U_MIN |
- BRW_ADDRESS_ROUNDING_ENABLE_V_MIN |
- BRW_ADDRESS_ROUNDING_ENABLE_R_MIN;
- }
- if (mag_filter != BRW_MAPFILTER_NEAREST) {
- address_rounding |= BRW_ADDRESS_ROUNDING_ENABLE_U_MAG |
- BRW_ADDRESS_ROUNDING_ENABLE_V_MAG |
- BRW_ADDRESS_ROUNDING_ENABLE_R_MAG;
- }
-
- bool either_nearest =
- sampler->MinFilter == GL_NEAREST || sampler->MagFilter == GL_NEAREST;
- unsigned wrap_s = translate_wrap_mode(brw, sampler->WrapS, either_nearest);
- unsigned wrap_t = translate_wrap_mode(brw, sampler->WrapT, either_nearest);
- unsigned wrap_r = translate_wrap_mode(brw, sampler->WrapR, either_nearest);
-
- if (target == GL_TEXTURE_CUBE_MAP ||
- target == GL_TEXTURE_CUBE_MAP_ARRAY) {
- /* Cube maps must use the same wrap mode for all three coordinate
- * dimensions. Prior to Haswell, only CUBE and CLAMP are valid.
- *
- * Ivybridge and Baytrail seem to have problems with CUBE mode and
- * integer formats. Fall back to CLAMP for now.
- */
- if ((tex_cube_map_seamless || sampler->CubeMapSeamless) &&
- !(brw->gen == 7 && !brw->is_haswell && texObj->_IsIntegerFormat)) {
- wrap_s = BRW_TEXCOORDMODE_CUBE;
- wrap_t = BRW_TEXCOORDMODE_CUBE;
- wrap_r = BRW_TEXCOORDMODE_CUBE;
- } else {
- wrap_s = BRW_TEXCOORDMODE_CLAMP;
- wrap_t = BRW_TEXCOORDMODE_CLAMP;
- wrap_r = BRW_TEXCOORDMODE_CLAMP;
- }
- } else if (target == GL_TEXTURE_1D) {
- /* There's a bug in 1D texture sampling - it actually pays
- * attention to the wrap_t value, though it should not.
- * Override the wrap_t value here to GL_REPEAT to keep
- * any nonexistent border pixels from floating in.
- */
- wrap_t = BRW_TEXCOORDMODE_WRAP;
- }
-
- /* Set shadow function. */
- unsigned shadow_function = 0;
- if (sampler->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) {
- shadow_function =
- intel_translate_shadow_compare_func(sampler->CompareFunc);
- }
-
- const int lod_bits = brw->gen >= 7 ? 8 : 6;
- const float hw_max_lod = brw->gen >= 7 ? 14 : 13;
- const unsigned base_level =
- U_FIXED(CLAMP(texObj->MinLevel + texObj->BaseLevel, 0, hw_max_lod), 1);
- const unsigned min_lod =
- U_FIXED(CLAMP(sampler->MinLod, 0, hw_max_lod), lod_bits);
- const unsigned max_lod =
- U_FIXED(CLAMP(sampler->MaxLod, 0, hw_max_lod), lod_bits);
- const int lod_bias =
- S_FIXED(CLAMP(tex_unit_lod_bias + sampler->LodBias, -16, 15), lod_bits);
-
- /* Upload the border color if necessary. If not, just point it at
- * offset 0 (the start of the batch) - the color should be ignored,
- * but that address won't fault in case something reads it anyway.
- */
- uint32_t border_color_offset = 0;
- if (wrap_mode_needs_border_color(wrap_s) ||
- wrap_mode_needs_border_color(wrap_t) ||
- wrap_mode_needs_border_color(wrap_r)) {
- upload_default_color(brw, sampler, format, base_format,
- texObj->_IsIntegerFormat, texObj->StencilSampling,
- &border_color_offset);
- }
-
- const bool non_normalized_coords = target == GL_TEXTURE_RECTANGLE;
-
- brw_emit_sampler_state(brw,
- sampler_state,
- batch_offset_for_sampler_state,
- min_filter, mag_filter, mip_filter,
- max_anisotropy,
- address_rounding,
- wrap_s, wrap_t, wrap_r,
- base_level, min_lod, max_lod, lod_bias,
- shadow_function,
- non_normalized_coords,
- border_color_offset);
-}
-
-static void
-update_sampler_state(struct brw_context *brw,
- int unit,
- uint32_t *sampler_state,
- uint32_t batch_offset_for_sampler_state)
-{
- struct gl_context *ctx = &brw->ctx;
- const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
- const struct gl_texture_object *texObj = texUnit->_Current;
- const struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
-
- /* These don't use samplers at all. */
- if (texObj->Target == GL_TEXTURE_BUFFER)
- return;
-
- struct gl_texture_image *firstImage = texObj->Image[0][texObj->BaseLevel];
- brw_update_sampler_state(brw, texObj->Target, ctx->Texture.CubeMapSeamless,
- texUnit->LodBias,
- firstImage->TexFormat, firstImage->_BaseFormat,
- texObj, sampler,
- sampler_state, batch_offset_for_sampler_state);
-}
-
-static void
-brw_upload_sampler_state_table(struct brw_context *brw,
- struct gl_program *prog,
- struct brw_stage_state *stage_state)
-{
- struct gl_context *ctx = &brw->ctx;
- uint32_t sampler_count = stage_state->sampler_count;
-
- GLbitfield SamplersUsed = prog->SamplersUsed;
-
- if (sampler_count == 0)
- return;
-
- /* SAMPLER_STATE is 4 DWords on all platforms. */
- const int dwords = 4;
- const int size_in_bytes = dwords * sizeof(uint32_t);
-
- uint32_t *sampler_state = brw_state_batch(brw,
- sampler_count * size_in_bytes,
- 32, &stage_state->sampler_offset);
- memset(sampler_state, 0, sampler_count * size_in_bytes);
-
- uint32_t batch_offset_for_sampler_state = stage_state->sampler_offset;
-
- for (unsigned s = 0; s < sampler_count; s++) {
- if (SamplersUsed & (1 << s)) {
- const unsigned unit = prog->SamplerUnits[s];
- if (ctx->Texture.Unit[unit]._Current) {
- update_sampler_state(brw, unit, sampler_state,
- batch_offset_for_sampler_state);
- }
- }
-
- sampler_state += dwords;
- batch_offset_for_sampler_state += size_in_bytes;
- }
-
- if (brw->gen >= 7 && stage_state->stage != MESA_SHADER_COMPUTE) {
- /* Emit a 3DSTATE_SAMPLER_STATE_POINTERS_XS packet. */
- gen7_emit_sampler_state_pointers_xs(brw, stage_state);
- } else {
- /* Flag that the sampler state table pointer has changed; later atoms
- * will handle it.
- */
- brw->ctx.NewDriverState |= BRW_NEW_SAMPLER_STATE_TABLE;
- }
-}
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