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| /************************************************************************** |
| * |
| * Copyright 2010 VMware, Inc. |
| * All rights reserved. |
| * |
| * 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, 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 VMWARE 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. |
| * |
| **************************************************************************/ |
| |
| /** |
| * Texture sampling code generation |
| * @author Jose Fonseca <jfonseca@vmware.com> |
| */ |
| |
| #include "pipe/p_defines.h" |
| #include "pipe/p_shader_tokens.h" |
| #include "gallivm/lp_bld_const.h" |
| #include "gallivm/lp_bld_debug.h" |
| #include "gallivm/lp_bld_type.h" |
| #include "gallivm/lp_bld_sample.h" |
| #include "gallivm/lp_bld_tgsi.h" |
| |
| |
| #include "util/u_debug.h" |
| #include "util/u_memory.h" |
| #include "util/u_pointer.h" |
| #include "util/u_string.h" |
| |
| #include "draw_llvm.h" |
| |
| |
| /** |
| * This provides the bridge between the sampler state store in |
| * lp_jit_context and lp_jit_texture and the sampler code |
| * generator. It provides the texture layout information required by |
| * the texture sampler code generator in terms of the state stored in |
| * lp_jit_context and lp_jit_texture in runtime. |
| */ |
| struct draw_llvm_sampler_dynamic_state |
| { |
| struct lp_sampler_dynamic_state base; |
| |
| const struct draw_sampler_static_state *static_state; |
| }; |
| |
| |
| /** |
| * This is the bridge between our sampler and the TGSI translator. |
| */ |
| struct draw_llvm_sampler_soa |
| { |
| struct lp_build_sampler_soa base; |
| |
| struct draw_llvm_sampler_dynamic_state dynamic_state; |
| }; |
| |
| |
| /** |
| * Fetch the specified member of the lp_jit_texture structure. |
| * \param emit_load if TRUE, emit the LLVM load instruction to actually |
| * fetch the field's value. Otherwise, just emit the |
| * GEP code to address the field. |
| * |
| * @sa http://llvm.org/docs/GetElementPtr.html |
| */ |
| static LLVMValueRef |
| draw_llvm_texture_member(const struct lp_sampler_dynamic_state *base, |
| struct gallivm_state *gallivm, |
| LLVMValueRef context_ptr, |
| unsigned texture_unit, |
| unsigned member_index, |
| const char *member_name, |
| boolean emit_load) |
| { |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef indices[4]; |
| LLVMValueRef ptr; |
| LLVMValueRef res; |
| |
| debug_assert(texture_unit < PIPE_MAX_SHADER_SAMPLER_VIEWS); |
| |
| /* context[0] */ |
| indices[0] = lp_build_const_int32(gallivm, 0); |
| /* context[0].textures */ |
| indices[1] = lp_build_const_int32(gallivm, DRAW_JIT_CTX_TEXTURES); |
| /* context[0].textures[unit] */ |
| indices[2] = lp_build_const_int32(gallivm, texture_unit); |
| /* context[0].textures[unit].member */ |
| indices[3] = lp_build_const_int32(gallivm, member_index); |
| |
| ptr = LLVMBuildGEP(builder, context_ptr, indices, Elements(indices), ""); |
| |
| if (emit_load) |
| res = LLVMBuildLoad(builder, ptr, ""); |
| else |
| res = ptr; |
| |
| lp_build_name(res, "context.texture%u.%s", texture_unit, member_name); |
| |
| return res; |
| } |
| |
| |
| /** |
| * Fetch the specified member of the lp_jit_sampler structure. |
| * \param emit_load if TRUE, emit the LLVM load instruction to actually |
| * fetch the field's value. Otherwise, just emit the |
| * GEP code to address the field. |
| * |
| * @sa http://llvm.org/docs/GetElementPtr.html |
| */ |
| static LLVMValueRef |
| draw_llvm_sampler_member(const struct lp_sampler_dynamic_state *base, |
| struct gallivm_state *gallivm, |
| LLVMValueRef context_ptr, |
| unsigned sampler_unit, |
| unsigned member_index, |
| const char *member_name, |
| boolean emit_load) |
| { |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef indices[4]; |
| LLVMValueRef ptr; |
| LLVMValueRef res; |
| |
| debug_assert(sampler_unit < PIPE_MAX_SAMPLERS); |
| |
| /* context[0] */ |
| indices[0] = lp_build_const_int32(gallivm, 0); |
| /* context[0].samplers */ |
| indices[1] = lp_build_const_int32(gallivm, DRAW_JIT_CTX_SAMPLERS); |
| /* context[0].samplers[unit] */ |
| indices[2] = lp_build_const_int32(gallivm, sampler_unit); |
| /* context[0].samplers[unit].member */ |
| indices[3] = lp_build_const_int32(gallivm, member_index); |
| |
| ptr = LLVMBuildGEP(builder, context_ptr, indices, Elements(indices), ""); |
| |
| if (emit_load) |
| res = LLVMBuildLoad(builder, ptr, ""); |
| else |
| res = ptr; |
| |
| lp_build_name(res, "context.sampler%u.%s", sampler_unit, member_name); |
| |
| return res; |
| } |
| |
| |
| /** |
| * Helper macro to instantiate the functions that generate the code to |
| * fetch the members of lp_jit_texture to fulfill the sampler code |
| * generator requests. |
| * |
| * This complexity is the price we have to pay to keep the texture |
| * sampler code generator a reusable module without dependencies to |
| * llvmpipe internals. |
| */ |
| #define DRAW_LLVM_TEXTURE_MEMBER(_name, _index, _emit_load) \ |
| static LLVMValueRef \ |
| draw_llvm_texture_##_name( const struct lp_sampler_dynamic_state *base, \ |
| struct gallivm_state *gallivm, \ |
| LLVMValueRef context_ptr, \ |
| unsigned texture_unit) \ |
| { \ |
| return draw_llvm_texture_member(base, gallivm, context_ptr, \ |
| texture_unit, _index, #_name, _emit_load ); \ |
| } |
| |
| |
| DRAW_LLVM_TEXTURE_MEMBER(width, DRAW_JIT_TEXTURE_WIDTH, TRUE) |
| DRAW_LLVM_TEXTURE_MEMBER(height, DRAW_JIT_TEXTURE_HEIGHT, TRUE) |
| DRAW_LLVM_TEXTURE_MEMBER(depth, DRAW_JIT_TEXTURE_DEPTH, TRUE) |
| DRAW_LLVM_TEXTURE_MEMBER(first_level,DRAW_JIT_TEXTURE_FIRST_LEVEL, TRUE) |
| DRAW_LLVM_TEXTURE_MEMBER(last_level, DRAW_JIT_TEXTURE_LAST_LEVEL, TRUE) |
| DRAW_LLVM_TEXTURE_MEMBER(base_ptr, DRAW_JIT_TEXTURE_BASE, TRUE) |
| DRAW_LLVM_TEXTURE_MEMBER(row_stride, DRAW_JIT_TEXTURE_ROW_STRIDE, FALSE) |
| DRAW_LLVM_TEXTURE_MEMBER(img_stride, DRAW_JIT_TEXTURE_IMG_STRIDE, FALSE) |
| DRAW_LLVM_TEXTURE_MEMBER(mip_offsets, DRAW_JIT_TEXTURE_MIP_OFFSETS, FALSE) |
| |
| |
| #define DRAW_LLVM_SAMPLER_MEMBER(_name, _index, _emit_load) \ |
| static LLVMValueRef \ |
| draw_llvm_sampler_##_name( const struct lp_sampler_dynamic_state *base, \ |
| struct gallivm_state *gallivm, \ |
| LLVMValueRef context_ptr, \ |
| unsigned sampler_unit) \ |
| { \ |
| return draw_llvm_sampler_member(base, gallivm, context_ptr, \ |
| sampler_unit, _index, #_name, _emit_load ); \ |
| } |
| |
| |
| DRAW_LLVM_SAMPLER_MEMBER(min_lod, DRAW_JIT_SAMPLER_MIN_LOD, TRUE) |
| DRAW_LLVM_SAMPLER_MEMBER(max_lod, DRAW_JIT_SAMPLER_MAX_LOD, TRUE) |
| DRAW_LLVM_SAMPLER_MEMBER(lod_bias, DRAW_JIT_SAMPLER_LOD_BIAS, TRUE) |
| DRAW_LLVM_SAMPLER_MEMBER(border_color, DRAW_JIT_SAMPLER_BORDER_COLOR, FALSE) |
| |
| |
| static void |
| draw_llvm_sampler_soa_destroy(struct lp_build_sampler_soa *sampler) |
| { |
| FREE(sampler); |
| } |
| |
| |
| /** |
| * Fetch filtered values from texture. |
| * The 'texel' parameter returns four vectors corresponding to R, G, B, A. |
| */ |
| static void |
| draw_llvm_sampler_soa_emit_fetch_texel(const struct lp_build_sampler_soa *base, |
| struct gallivm_state *gallivm, |
| const struct lp_sampler_params *params) |
| { |
| struct draw_llvm_sampler_soa *sampler = (struct draw_llvm_sampler_soa *)base; |
| unsigned texture_index = params->texture_index; |
| unsigned sampler_index = params->sampler_index; |
| |
| assert(texture_index < PIPE_MAX_SHADER_SAMPLER_VIEWS); |
| assert(sampler_index < PIPE_MAX_SAMPLERS); |
| |
| lp_build_sample_soa(&sampler->dynamic_state.static_state[texture_index].texture_state, |
| &sampler->dynamic_state.static_state[sampler_index].sampler_state, |
| &sampler->dynamic_state.base, |
| gallivm, params); |
| } |
| |
| |
| /** |
| * Fetch the texture size. |
| */ |
| static void |
| draw_llvm_sampler_soa_emit_size_query(const struct lp_build_sampler_soa *base, |
| struct gallivm_state *gallivm, |
| struct lp_type type, |
| unsigned texture_unit, |
| unsigned target, |
| LLVMValueRef context_ptr, |
| boolean is_sviewinfo, |
| enum lp_sampler_lod_property lod_property, |
| LLVMValueRef explicit_lod, /* optional */ |
| LLVMValueRef *sizes_out) |
| { |
| struct draw_llvm_sampler_soa *sampler = (struct draw_llvm_sampler_soa *)base; |
| |
| assert(texture_unit < PIPE_MAX_SHADER_SAMPLER_VIEWS); |
| |
| lp_build_size_query_soa(gallivm, |
| &sampler->dynamic_state.static_state[texture_unit].texture_state, |
| &sampler->dynamic_state.base, |
| type, |
| texture_unit, |
| target, |
| context_ptr, |
| is_sviewinfo, |
| lod_property, |
| explicit_lod, |
| sizes_out); |
| } |
| |
| struct lp_build_sampler_soa * |
| draw_llvm_sampler_soa_create(const struct draw_sampler_static_state *static_state) |
| { |
| struct draw_llvm_sampler_soa *sampler; |
| |
| sampler = CALLOC_STRUCT(draw_llvm_sampler_soa); |
| if(!sampler) |
| return NULL; |
| |
| sampler->base.destroy = draw_llvm_sampler_soa_destroy; |
| sampler->base.emit_tex_sample = draw_llvm_sampler_soa_emit_fetch_texel; |
| sampler->base.emit_size_query = draw_llvm_sampler_soa_emit_size_query; |
| sampler->dynamic_state.base.width = draw_llvm_texture_width; |
| sampler->dynamic_state.base.height = draw_llvm_texture_height; |
| sampler->dynamic_state.base.depth = draw_llvm_texture_depth; |
| sampler->dynamic_state.base.first_level = draw_llvm_texture_first_level; |
| sampler->dynamic_state.base.last_level = draw_llvm_texture_last_level; |
| sampler->dynamic_state.base.row_stride = draw_llvm_texture_row_stride; |
| sampler->dynamic_state.base.img_stride = draw_llvm_texture_img_stride; |
| sampler->dynamic_state.base.base_ptr = draw_llvm_texture_base_ptr; |
| sampler->dynamic_state.base.mip_offsets = draw_llvm_texture_mip_offsets; |
| sampler->dynamic_state.base.min_lod = draw_llvm_sampler_min_lod; |
| sampler->dynamic_state.base.max_lod = draw_llvm_sampler_max_lod; |
| sampler->dynamic_state.base.lod_bias = draw_llvm_sampler_lod_bias; |
| sampler->dynamic_state.base.border_color = draw_llvm_sampler_border_color; |
| sampler->dynamic_state.static_state = static_state; |
| |
| return &sampler->base; |
| } |
| |