497 lines
19 KiB
C
497 lines
19 KiB
C
/**************************************************************************
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*
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* Copyright 2010 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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* Texture sampling code generation
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#include "pipe/p_defines.h"
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#include "pipe/p_shader_tokens.h"
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#include "gallivm/lp_bld_const.h"
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#include "gallivm/lp_bld_debug.h"
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#include "gallivm/lp_bld_type.h"
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#include "gallivm/lp_bld_sample.h"
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#include "gallivm/lp_bld_tgsi.h"
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#include "util/u_debug.h"
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#include "util/u_memory.h"
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#include "util/u_pointer.h"
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#include "util/u_string.h"
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#include "draw_llvm.h"
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/**
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* This provides the bridge between the sampler state store in
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* lp_jit_context and lp_jit_texture and the sampler code
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* generator. It provides the texture layout information required by
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* the texture sampler code generator in terms of the state stored in
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* lp_jit_context and lp_jit_texture in runtime.
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*/
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struct draw_llvm_sampler_dynamic_state
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{
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struct lp_sampler_dynamic_state base;
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const struct draw_sampler_static_state *static_state;
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};
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/**
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* This is the bridge between our sampler and the TGSI translator.
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*/
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struct draw_llvm_sampler_soa
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{
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struct lp_build_sampler_soa base;
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struct draw_llvm_sampler_dynamic_state dynamic_state;
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unsigned nr_samplers;
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};
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struct draw_llvm_image_dynamic_state
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{
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struct lp_sampler_dynamic_state base;
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const struct draw_image_static_state *static_state;
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};
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struct draw_llvm_image_soa
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{
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struct lp_build_image_soa base;
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struct draw_llvm_image_dynamic_state dynamic_state;
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unsigned nr_images;
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};
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/**
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* Fetch the specified member of the lp_jit_texture structure.
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* \param emit_load if TRUE, emit the LLVM load instruction to actually
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* fetch the field's value. Otherwise, just emit the
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* GEP code to address the field.
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*
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* @sa http://llvm.org/docs/GetElementPtr.html
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*/
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static LLVMValueRef
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draw_llvm_texture_member(const struct lp_sampler_dynamic_state *base,
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struct gallivm_state *gallivm,
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LLVMValueRef context_ptr,
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unsigned texture_unit,
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LLVMValueRef texture_unit_offset,
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unsigned member_index,
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const char *member_name,
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boolean emit_load)
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{
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LLVMBuilderRef builder = gallivm->builder;
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LLVMValueRef indices[4];
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LLVMValueRef ptr;
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LLVMValueRef res;
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debug_assert(texture_unit < PIPE_MAX_SHADER_SAMPLER_VIEWS);
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/* context[0] */
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indices[0] = lp_build_const_int32(gallivm, 0);
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/* context[0].textures */
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indices[1] = lp_build_const_int32(gallivm, DRAW_JIT_CTX_TEXTURES);
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/* context[0].textures[unit] */
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indices[2] = lp_build_const_int32(gallivm, texture_unit);
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if (texture_unit_offset) {
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indices[2] = LLVMBuildAdd(gallivm->builder, indices[2], texture_unit_offset, "");
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LLVMValueRef cond = LLVMBuildICmp(gallivm->builder, LLVMIntULT, indices[2], lp_build_const_int32(gallivm, PIPE_MAX_SHADER_SAMPLER_VIEWS), "");
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indices[2] = LLVMBuildSelect(gallivm->builder, cond, indices[2], lp_build_const_int32(gallivm, texture_unit), "");
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}
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/* context[0].textures[unit].member */
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indices[3] = lp_build_const_int32(gallivm, member_index);
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ptr = LLVMBuildGEP(builder, context_ptr, indices, ARRAY_SIZE(indices), "");
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if (emit_load)
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res = LLVMBuildLoad(builder, ptr, "");
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else
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res = ptr;
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lp_build_name(res, "context.texture%u.%s", texture_unit, member_name);
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return res;
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}
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/**
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* Fetch the specified member of the lp_jit_sampler structure.
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* \param emit_load if TRUE, emit the LLVM load instruction to actually
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* fetch the field's value. Otherwise, just emit the
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* GEP code to address the field.
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*
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* @sa http://llvm.org/docs/GetElementPtr.html
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*/
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static LLVMValueRef
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draw_llvm_sampler_member(const struct lp_sampler_dynamic_state *base,
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struct gallivm_state *gallivm,
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LLVMValueRef context_ptr,
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unsigned sampler_unit,
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unsigned member_index,
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const char *member_name,
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boolean emit_load)
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{
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LLVMBuilderRef builder = gallivm->builder;
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LLVMValueRef indices[4];
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LLVMValueRef ptr;
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LLVMValueRef res;
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debug_assert(sampler_unit < PIPE_MAX_SAMPLERS);
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/* context[0] */
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indices[0] = lp_build_const_int32(gallivm, 0);
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/* context[0].samplers */
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indices[1] = lp_build_const_int32(gallivm, DRAW_JIT_CTX_SAMPLERS);
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/* context[0].samplers[unit] */
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indices[2] = lp_build_const_int32(gallivm, sampler_unit);
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/* context[0].samplers[unit].member */
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indices[3] = lp_build_const_int32(gallivm, member_index);
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ptr = LLVMBuildGEP(builder, context_ptr, indices, ARRAY_SIZE(indices), "");
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if (emit_load)
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res = LLVMBuildLoad(builder, ptr, "");
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else
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res = ptr;
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lp_build_name(res, "context.sampler%u.%s", sampler_unit, member_name);
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return res;
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}
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/**
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* Fetch the specified member of the lp_jit_texture structure.
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* \param emit_load if TRUE, emit the LLVM load instruction to actually
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* fetch the field's value. Otherwise, just emit the
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* GEP code to address the field.
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*
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* @sa http://llvm.org/docs/GetElementPtr.html
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*/
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static LLVMValueRef
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draw_llvm_image_member(const struct lp_sampler_dynamic_state *base,
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struct gallivm_state *gallivm,
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LLVMValueRef context_ptr,
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unsigned image_unit,
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LLVMValueRef image_unit_offset,
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unsigned member_index,
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const char *member_name,
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boolean emit_load)
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{
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LLVMBuilderRef builder = gallivm->builder;
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LLVMValueRef indices[4];
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LLVMValueRef ptr;
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LLVMValueRef res;
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debug_assert(image_unit < PIPE_MAX_SHADER_IMAGES);
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/* context[0] */
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indices[0] = lp_build_const_int32(gallivm, 0);
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/* context[0].textures */
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indices[1] = lp_build_const_int32(gallivm, DRAW_JIT_CTX_IMAGES);
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/* context[0].textures[unit] */
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indices[2] = lp_build_const_int32(gallivm, image_unit);
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if (image_unit_offset) {
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indices[2] = LLVMBuildAdd(gallivm->builder, indices[2], image_unit_offset, "");
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LLVMValueRef cond = LLVMBuildICmp(gallivm->builder, LLVMIntULT, indices[2], lp_build_const_int32(gallivm, PIPE_MAX_SHADER_IMAGES), "");
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indices[2] = LLVMBuildSelect(gallivm->builder, cond, indices[2], lp_build_const_int32(gallivm, image_unit), "");
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}
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/* context[0].textures[unit].member */
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indices[3] = lp_build_const_int32(gallivm, member_index);
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ptr = LLVMBuildGEP(builder, context_ptr, indices, ARRAY_SIZE(indices), "");
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if (emit_load)
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res = LLVMBuildLoad(builder, ptr, "");
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else
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res = ptr;
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lp_build_name(res, "context.image%u.%s", image_unit, member_name);
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return res;
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}
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/**
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* Helper macro to instantiate the functions that generate the code to
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* fetch the members of lp_jit_texture to fulfill the sampler code
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* generator requests.
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*
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* This complexity is the price we have to pay to keep the texture
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* sampler code generator a reusable module without dependencies to
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* llvmpipe internals.
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*/
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#define DRAW_LLVM_TEXTURE_MEMBER(_name, _index, _emit_load) \
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static LLVMValueRef \
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draw_llvm_texture_##_name( const struct lp_sampler_dynamic_state *base, \
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struct gallivm_state *gallivm, \
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LLVMValueRef context_ptr, \
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unsigned texture_unit, \
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LLVMValueRef texture_unit_offset) \
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{ \
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return draw_llvm_texture_member(base, gallivm, context_ptr, \
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texture_unit, texture_unit_offset, \
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_index, #_name, _emit_load ); \
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}
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DRAW_LLVM_TEXTURE_MEMBER(width, DRAW_JIT_TEXTURE_WIDTH, TRUE)
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DRAW_LLVM_TEXTURE_MEMBER(height, DRAW_JIT_TEXTURE_HEIGHT, TRUE)
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DRAW_LLVM_TEXTURE_MEMBER(depth, DRAW_JIT_TEXTURE_DEPTH, TRUE)
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DRAW_LLVM_TEXTURE_MEMBER(first_level,DRAW_JIT_TEXTURE_FIRST_LEVEL, TRUE)
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DRAW_LLVM_TEXTURE_MEMBER(last_level, DRAW_JIT_TEXTURE_LAST_LEVEL, TRUE)
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DRAW_LLVM_TEXTURE_MEMBER(base_ptr, DRAW_JIT_TEXTURE_BASE, TRUE)
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DRAW_LLVM_TEXTURE_MEMBER(row_stride, DRAW_JIT_TEXTURE_ROW_STRIDE, FALSE)
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DRAW_LLVM_TEXTURE_MEMBER(img_stride, DRAW_JIT_TEXTURE_IMG_STRIDE, FALSE)
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DRAW_LLVM_TEXTURE_MEMBER(mip_offsets, DRAW_JIT_TEXTURE_MIP_OFFSETS, FALSE)
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DRAW_LLVM_TEXTURE_MEMBER(num_samples, DRAW_JIT_TEXTURE_NUM_SAMPLES, TRUE)
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DRAW_LLVM_TEXTURE_MEMBER(sample_stride, DRAW_JIT_TEXTURE_SAMPLE_STRIDE, TRUE)
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#define DRAW_LLVM_SAMPLER_MEMBER(_name, _index, _emit_load) \
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static LLVMValueRef \
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draw_llvm_sampler_##_name( const struct lp_sampler_dynamic_state *base, \
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struct gallivm_state *gallivm, \
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LLVMValueRef context_ptr, \
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unsigned sampler_unit) \
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{ \
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return draw_llvm_sampler_member(base, gallivm, context_ptr, \
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sampler_unit, _index, #_name, _emit_load ); \
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}
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DRAW_LLVM_SAMPLER_MEMBER(min_lod, DRAW_JIT_SAMPLER_MIN_LOD, TRUE)
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DRAW_LLVM_SAMPLER_MEMBER(max_lod, DRAW_JIT_SAMPLER_MAX_LOD, TRUE)
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DRAW_LLVM_SAMPLER_MEMBER(lod_bias, DRAW_JIT_SAMPLER_LOD_BIAS, TRUE)
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DRAW_LLVM_SAMPLER_MEMBER(border_color, DRAW_JIT_SAMPLER_BORDER_COLOR, FALSE)
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DRAW_LLVM_SAMPLER_MEMBER(max_aniso, DRAW_JIT_SAMPLER_MAX_ANISO, TRUE)
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#define DRAW_LLVM_IMAGE_MEMBER(_name, _index, _emit_load) \
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static LLVMValueRef \
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draw_llvm_image_##_name( const struct lp_sampler_dynamic_state *base, \
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struct gallivm_state *gallivm, \
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LLVMValueRef context_ptr, \
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unsigned image_unit, LLVMValueRef image_unit_offset) \
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{ \
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return draw_llvm_image_member(base, gallivm, context_ptr, \
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image_unit, image_unit_offset, \
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_index, #_name, _emit_load ); \
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}
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DRAW_LLVM_IMAGE_MEMBER(width, DRAW_JIT_IMAGE_WIDTH, TRUE)
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DRAW_LLVM_IMAGE_MEMBER(height, DRAW_JIT_IMAGE_HEIGHT, TRUE)
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DRAW_LLVM_IMAGE_MEMBER(depth, DRAW_JIT_IMAGE_DEPTH, TRUE)
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DRAW_LLVM_IMAGE_MEMBER(base_ptr, DRAW_JIT_IMAGE_BASE, TRUE)
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DRAW_LLVM_IMAGE_MEMBER(row_stride, DRAW_JIT_IMAGE_ROW_STRIDE, TRUE)
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DRAW_LLVM_IMAGE_MEMBER(img_stride, DRAW_JIT_IMAGE_IMG_STRIDE, TRUE)
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DRAW_LLVM_IMAGE_MEMBER(num_samples, DRAW_JIT_IMAGE_NUM_SAMPLES, TRUE)
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DRAW_LLVM_IMAGE_MEMBER(sample_stride, DRAW_JIT_IMAGE_SAMPLE_STRIDE, TRUE)
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static void
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draw_llvm_sampler_soa_destroy(struct lp_build_sampler_soa *sampler)
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{
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FREE(sampler);
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}
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/**
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* Fetch filtered values from texture.
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* The 'texel' parameter returns four vectors corresponding to R, G, B, A.
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*/
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static void
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draw_llvm_sampler_soa_emit_fetch_texel(const struct lp_build_sampler_soa *base,
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struct gallivm_state *gallivm,
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const struct lp_sampler_params *params)
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{
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struct draw_llvm_sampler_soa *sampler = (struct draw_llvm_sampler_soa *)base;
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unsigned texture_index = params->texture_index;
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unsigned sampler_index = params->sampler_index;
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assert(texture_index < PIPE_MAX_SHADER_SAMPLER_VIEWS);
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assert(sampler_index < PIPE_MAX_SAMPLERS);
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if (params->texture_index_offset) {
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struct lp_build_sample_array_switch switch_info;
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memset(&switch_info, 0, sizeof(switch_info));
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LLVMValueRef unit = LLVMBuildAdd(gallivm->builder, params->texture_index_offset,
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lp_build_const_int32(gallivm, texture_index), "");
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lp_build_sample_array_init_soa(&switch_info, gallivm, params, unit,
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0, sampler->nr_samplers);
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for (unsigned i = 0; i < sampler->nr_samplers; i++) {
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lp_build_sample_array_case_soa(&switch_info, i,
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&sampler->dynamic_state.static_state[i].texture_state,
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&sampler->dynamic_state.static_state[i].sampler_state,
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&sampler->dynamic_state.base);
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}
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lp_build_sample_array_fini_soa(&switch_info);
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} else {
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lp_build_sample_soa(&sampler->dynamic_state.static_state[texture_index].texture_state,
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&sampler->dynamic_state.static_state[sampler_index].sampler_state,
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&sampler->dynamic_state.base,
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gallivm, params);
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}
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}
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/**
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* Fetch the texture size.
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*/
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static void
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draw_llvm_sampler_soa_emit_size_query(const struct lp_build_sampler_soa *base,
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struct gallivm_state *gallivm,
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const struct lp_sampler_size_query_params *params)
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{
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struct draw_llvm_sampler_soa *sampler = (struct draw_llvm_sampler_soa *)base;
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assert(params->texture_unit < PIPE_MAX_SHADER_SAMPLER_VIEWS);
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lp_build_size_query_soa(gallivm,
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&sampler->dynamic_state.static_state[params->texture_unit].texture_state,
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&sampler->dynamic_state.base,
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params);
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}
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struct lp_build_sampler_soa *
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draw_llvm_sampler_soa_create(const struct draw_sampler_static_state *static_state,
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unsigned nr_samplers)
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{
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struct draw_llvm_sampler_soa *sampler;
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sampler = CALLOC_STRUCT(draw_llvm_sampler_soa);
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if (!sampler)
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return NULL;
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sampler->base.destroy = draw_llvm_sampler_soa_destroy;
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sampler->base.emit_tex_sample = draw_llvm_sampler_soa_emit_fetch_texel;
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sampler->base.emit_size_query = draw_llvm_sampler_soa_emit_size_query;
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sampler->dynamic_state.base.width = draw_llvm_texture_width;
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sampler->dynamic_state.base.height = draw_llvm_texture_height;
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sampler->dynamic_state.base.depth = draw_llvm_texture_depth;
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sampler->dynamic_state.base.first_level = draw_llvm_texture_first_level;
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sampler->dynamic_state.base.last_level = draw_llvm_texture_last_level;
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sampler->dynamic_state.base.row_stride = draw_llvm_texture_row_stride;
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sampler->dynamic_state.base.img_stride = draw_llvm_texture_img_stride;
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sampler->dynamic_state.base.base_ptr = draw_llvm_texture_base_ptr;
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sampler->dynamic_state.base.mip_offsets = draw_llvm_texture_mip_offsets;
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sampler->dynamic_state.base.num_samples = draw_llvm_texture_num_samples;
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sampler->dynamic_state.base.sample_stride = draw_llvm_texture_sample_stride;
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sampler->dynamic_state.base.min_lod = draw_llvm_sampler_min_lod;
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sampler->dynamic_state.base.max_lod = draw_llvm_sampler_max_lod;
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sampler->dynamic_state.base.lod_bias = draw_llvm_sampler_lod_bias;
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sampler->dynamic_state.base.border_color = draw_llvm_sampler_border_color;
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sampler->dynamic_state.base.max_aniso = draw_llvm_sampler_max_aniso;
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sampler->dynamic_state.static_state = static_state;
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sampler->nr_samplers = nr_samplers;
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return &sampler->base;
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}
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static void
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draw_llvm_image_soa_emit_op(const struct lp_build_image_soa *base,
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struct gallivm_state *gallivm,
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const struct lp_img_params *params)
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{
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struct draw_llvm_image_soa *image = (struct draw_llvm_image_soa *)base;
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unsigned image_index = params->image_index;
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assert(image_index < PIPE_MAX_SHADER_IMAGES);
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if (params->image_index_offset) {
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struct lp_build_img_op_array_switch switch_info;
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memset(&switch_info, 0, sizeof(switch_info));
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LLVMValueRef unit = LLVMBuildAdd(gallivm->builder, params->image_index_offset,
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lp_build_const_int32(gallivm, image_index), "");
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lp_build_image_op_switch_soa(&switch_info, gallivm, params,
|
|
unit, 0, image->nr_images);
|
|
|
|
for (unsigned i = 0; i < image->nr_images; i++) {
|
|
lp_build_image_op_array_case(&switch_info, i,
|
|
&image->dynamic_state.static_state[i].image_state,
|
|
&image->dynamic_state.base);
|
|
}
|
|
lp_build_image_op_array_fini_soa(&switch_info);
|
|
return;
|
|
}
|
|
lp_build_img_op_soa(&image->dynamic_state.static_state[image_index].image_state,
|
|
&image->dynamic_state.base,
|
|
gallivm, params, params->outdata);
|
|
}
|
|
/**
|
|
* Fetch the texture size.
|
|
*/
|
|
static void
|
|
draw_llvm_image_soa_emit_size_query(const struct lp_build_image_soa *base,
|
|
struct gallivm_state *gallivm,
|
|
const struct lp_sampler_size_query_params *params)
|
|
{
|
|
struct draw_llvm_image_soa *image = (struct draw_llvm_image_soa *)base;
|
|
|
|
assert(params->texture_unit < PIPE_MAX_SHADER_IMAGES);
|
|
|
|
lp_build_size_query_soa(gallivm,
|
|
&image->dynamic_state.static_state[params->texture_unit].image_state,
|
|
&image->dynamic_state.base,
|
|
params);
|
|
}
|
|
static void
|
|
draw_llvm_image_soa_destroy(struct lp_build_image_soa *image)
|
|
{
|
|
FREE(image);
|
|
}
|
|
|
|
struct lp_build_image_soa *
|
|
draw_llvm_image_soa_create(const struct draw_image_static_state *static_state,
|
|
unsigned nr_images)
|
|
{
|
|
struct draw_llvm_image_soa *image;
|
|
|
|
image = CALLOC_STRUCT(draw_llvm_image_soa);
|
|
if (!image)
|
|
return NULL;
|
|
|
|
image->base.destroy = draw_llvm_image_soa_destroy;
|
|
image->base.emit_op = draw_llvm_image_soa_emit_op;
|
|
image->base.emit_size_query = draw_llvm_image_soa_emit_size_query;
|
|
|
|
image->dynamic_state.base.width = draw_llvm_image_width;
|
|
image->dynamic_state.base.height = draw_llvm_image_height;
|
|
|
|
image->dynamic_state.base.depth = draw_llvm_image_depth;
|
|
image->dynamic_state.base.base_ptr = draw_llvm_image_base_ptr;
|
|
image->dynamic_state.base.row_stride = draw_llvm_image_row_stride;
|
|
image->dynamic_state.base.img_stride = draw_llvm_image_img_stride;
|
|
image->dynamic_state.base.num_samples = draw_llvm_image_num_samples;
|
|
image->dynamic_state.base.sample_stride = draw_llvm_image_sample_stride;
|
|
|
|
image->dynamic_state.static_state = static_state;
|
|
|
|
image->nr_images = nr_images;
|
|
return &image->base;
|
|
}
|