355 lines
11 KiB
C
355 lines
11 KiB
C
/**************************************************************************
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*
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* Copyright 2007 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Authors:
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* Keith Whitwell <keithw@vmware.com>
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* Brian Paul
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*/
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#include "main/macros.h"
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#include "main/glformats.h"
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#include "main/samplerobj.h"
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#include "main/teximage.h"
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#include "main/texobj.h"
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#include "st_context.h"
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#include "st_cb_texture.h"
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#include "st_format.h"
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#include "st_atom.h"
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#include "st_sampler_view.h"
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#include "st_texture.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "cso_cache/cso_context.h"
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#include "util/format/u_format.h"
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/**
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* Convert a gl_sampler_object to a pipe_sampler_state object.
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*/
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void
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st_convert_sampler(const struct st_context *st,
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const struct gl_texture_object *texobj,
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const struct gl_sampler_object *msamp,
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float tex_unit_lod_bias,
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struct pipe_sampler_state *sampler,
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bool seamless_cube_map)
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{
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memcpy(sampler, &msamp->Attrib.state, sizeof(*sampler));
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sampler->seamless_cube_map |= seamless_cube_map;
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if (texobj->_IsIntegerFormat && st->ctx->Const.ForceIntegerTexNearest) {
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sampler->min_img_filter = PIPE_TEX_FILTER_NEAREST;
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sampler->mag_img_filter = PIPE_TEX_FILTER_NEAREST;
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}
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if (texobj->Target != GL_TEXTURE_RECTANGLE_ARB || st->lower_rect_tex)
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sampler->normalized_coords = 1;
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sampler->lod_bias += tex_unit_lod_bias;
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/* Check that only wrap modes using the border color have the first bit
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* set.
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*/
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STATIC_ASSERT(PIPE_TEX_WRAP_CLAMP & 0x1);
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STATIC_ASSERT(PIPE_TEX_WRAP_CLAMP_TO_BORDER & 0x1);
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STATIC_ASSERT(PIPE_TEX_WRAP_MIRROR_CLAMP & 0x1);
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STATIC_ASSERT(PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER & 0x1);
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STATIC_ASSERT(((PIPE_TEX_WRAP_REPEAT |
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PIPE_TEX_WRAP_CLAMP_TO_EDGE |
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PIPE_TEX_WRAP_MIRROR_REPEAT |
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PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE) & 0x1) == 0);
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/* For non-black borders... */
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if (msamp->Attrib.IsBorderColorNonZero &&
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/* This is true if wrap modes are using the border color: */
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(sampler->wrap_s | sampler->wrap_t | sampler->wrap_r) & 0x1) {
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GLenum texBaseFormat = _mesa_base_tex_image(texobj)->_BaseFormat;
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const GLboolean is_integer =
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texobj->_IsIntegerFormat || texobj->StencilSampling ||
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texBaseFormat == GL_STENCIL_INDEX;
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if (texobj->StencilSampling)
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texBaseFormat = GL_STENCIL_INDEX;
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if (st->apply_texture_swizzle_to_border_color) {
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const struct gl_texture_object *stobj = st_texture_object_const(texobj);
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/* XXX: clean that up to not use the sampler view at all */
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const struct st_sampler_view *sv = st_texture_get_current_sampler_view(st, stobj);
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if (sv) {
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struct pipe_sampler_view *view = sv->view;
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union pipe_color_union tmp = sampler->border_color;
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const unsigned char swz[4] =
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{
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view->swizzle_r,
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view->swizzle_g,
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view->swizzle_b,
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view->swizzle_a,
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};
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st_translate_color(&tmp, texBaseFormat, is_integer);
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util_format_apply_color_swizzle(&sampler->border_color,
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&tmp, swz, is_integer);
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} else {
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st_translate_color(&sampler->border_color,
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texBaseFormat, is_integer);
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}
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} else {
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st_translate_color(&sampler->border_color,
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texBaseFormat, is_integer);
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if (st->use_format_with_border_color)
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sampler->border_color_format = st_get_sampler_view_format(st, texobj,
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msamp->Attrib.sRGBDecode == GL_SKIP_DECODE_EXT);
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}
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sampler->border_color_is_integer = is_integer;
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}
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/* If sampling a depth texture and using shadow comparison */
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if (msamp->Attrib.CompareMode == GL_COMPARE_R_TO_TEXTURE) {
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GLenum texBaseFormat = _mesa_base_tex_image(texobj)->_BaseFormat;
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if (texBaseFormat == GL_DEPTH_COMPONENT ||
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(texBaseFormat == GL_DEPTH_STENCIL && !texobj->StencilSampling))
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sampler->compare_mode = PIPE_TEX_COMPARE_R_TO_TEXTURE;
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}
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}
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/**
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* Get a pipe_sampler_state object from a texture unit.
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*/
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void
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st_convert_sampler_from_unit(const struct st_context *st,
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struct pipe_sampler_state *sampler,
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GLuint texUnit)
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{
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const struct gl_texture_object *texobj;
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struct gl_context *ctx = st->ctx;
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const struct gl_sampler_object *msamp;
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texobj = ctx->Texture.Unit[texUnit]._Current;
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assert(texobj);
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msamp = _mesa_get_samplerobj(ctx, texUnit);
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st_convert_sampler(st, texobj, msamp, ctx->Texture.Unit[texUnit].LodBiasQuantized,
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sampler, ctx->Texture.CubeMapSeamless);
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}
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/**
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* Update the gallium driver's sampler state for fragment, vertex or
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* geometry shader stage.
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*/
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static void
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update_shader_samplers(struct st_context *st,
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enum pipe_shader_type shader_stage,
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const struct gl_program *prog,
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struct pipe_sampler_state *samplers,
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unsigned *out_num_samplers)
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{
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struct gl_context *ctx = st->ctx;
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GLbitfield samplers_used = prog->SamplersUsed;
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GLbitfield free_slots = ~prog->SamplersUsed;
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GLbitfield external_samplers_used = prog->ExternalSamplersUsed;
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unsigned unit, num_samplers;
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struct pipe_sampler_state local_samplers[PIPE_MAX_SAMPLERS];
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const struct pipe_sampler_state *states[PIPE_MAX_SAMPLERS];
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if (samplers_used == 0x0) {
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if (out_num_samplers)
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*out_num_samplers = 0;
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return;
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}
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if (!samplers)
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samplers = local_samplers;
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num_samplers = util_last_bit(samplers_used);
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/* loop over sampler units (aka tex image units) */
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for (unit = 0; samplers_used; unit++, samplers_used >>= 1) {
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struct pipe_sampler_state *sampler = samplers + unit;
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unsigned tex_unit = prog->SamplerUnits[unit];
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/* Don't update the sampler for TBOs. cso_context will not bind sampler
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* states that are NULL.
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*/
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if (samplers_used & 1 &&
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(ctx->Texture.Unit[tex_unit]._Current->Target != GL_TEXTURE_BUFFER ||
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st->texture_buffer_sampler)) {
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st_convert_sampler_from_unit(st, sampler, tex_unit);
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states[unit] = sampler;
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} else {
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states[unit] = NULL;
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}
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}
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/* For any external samplers with multiplaner YUV, stuff the additional
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* sampler states we need at the end.
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*
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* Just re-use the existing sampler-state from the primary slot.
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*/
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while (unlikely(external_samplers_used)) {
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GLuint unit = u_bit_scan(&external_samplers_used);
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GLuint extra = 0;
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struct gl_texture_object *stObj =
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st_get_texture_object(st->ctx, prog, unit);
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struct pipe_sampler_state *sampler = samplers + unit;
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/* if resource format matches then YUV wasn't lowered */
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if (!stObj || st_get_view_format(stObj) == stObj->pt->format)
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continue;
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switch (st_get_view_format(stObj)) {
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case PIPE_FORMAT_NV12:
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if (stObj->pt->format == PIPE_FORMAT_R8_G8B8_420_UNORM)
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/* no additional views needed */
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break;
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FALLTHROUGH;
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case PIPE_FORMAT_P010:
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case PIPE_FORMAT_P012:
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case PIPE_FORMAT_P016:
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case PIPE_FORMAT_Y210:
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case PIPE_FORMAT_Y212:
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case PIPE_FORMAT_Y216:
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case PIPE_FORMAT_YUYV:
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case PIPE_FORMAT_UYVY:
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if (stObj->pt->format == PIPE_FORMAT_R8G8_R8B8_UNORM ||
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stObj->pt->format == PIPE_FORMAT_G8R8_B8R8_UNORM) {
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/* no additional views needed */
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break;
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}
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/* we need one additional sampler: */
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extra = u_bit_scan(&free_slots);
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states[extra] = sampler;
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break;
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case PIPE_FORMAT_IYUV:
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/* we need two additional samplers: */
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extra = u_bit_scan(&free_slots);
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states[extra] = sampler;
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extra = u_bit_scan(&free_slots);
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states[extra] = sampler;
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break;
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default:
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break;
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}
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num_samplers = MAX2(num_samplers, extra + 1);
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}
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cso_set_samplers(st->cso_context, shader_stage, num_samplers, states);
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if (out_num_samplers)
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*out_num_samplers = num_samplers;
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}
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void
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st_update_vertex_samplers(struct st_context *st)
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{
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const struct gl_context *ctx = st->ctx;
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update_shader_samplers(st,
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PIPE_SHADER_VERTEX,
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ctx->VertexProgram._Current,
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st->state.vert_samplers,
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&st->state.num_vert_samplers);
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}
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void
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st_update_tessctrl_samplers(struct st_context *st)
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{
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const struct gl_context *ctx = st->ctx;
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if (ctx->TessCtrlProgram._Current) {
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update_shader_samplers(st,
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PIPE_SHADER_TESS_CTRL,
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ctx->TessCtrlProgram._Current, NULL, NULL);
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}
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}
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void
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st_update_tesseval_samplers(struct st_context *st)
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{
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const struct gl_context *ctx = st->ctx;
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if (ctx->TessEvalProgram._Current) {
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update_shader_samplers(st,
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PIPE_SHADER_TESS_EVAL,
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ctx->TessEvalProgram._Current, NULL, NULL);
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}
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}
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void
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st_update_geometry_samplers(struct st_context *st)
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{
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const struct gl_context *ctx = st->ctx;
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if (ctx->GeometryProgram._Current) {
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update_shader_samplers(st,
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PIPE_SHADER_GEOMETRY,
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ctx->GeometryProgram._Current, NULL, NULL);
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}
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}
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void
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st_update_fragment_samplers(struct st_context *st)
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{
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const struct gl_context *ctx = st->ctx;
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update_shader_samplers(st,
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PIPE_SHADER_FRAGMENT,
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ctx->FragmentProgram._Current,
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st->state.frag_samplers,
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&st->state.num_frag_samplers);
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}
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void
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st_update_compute_samplers(struct st_context *st)
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{
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const struct gl_context *ctx = st->ctx;
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if (ctx->ComputeProgram._Current) {
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update_shader_samplers(st,
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PIPE_SHADER_COMPUTE,
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ctx->ComputeProgram._Current, NULL, NULL);
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}
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}
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