diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_tex_sample_llvm.c')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_tex_sample_llvm.c | 53 |
1 files changed, 36 insertions, 17 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_tex_sample_llvm.c b/src/gallium/drivers/llvmpipe/lp_tex_sample_llvm.c index 2533275..5a3cf37 100644 --- a/src/gallium/drivers/llvmpipe/lp_tex_sample_llvm.c +++ b/src/gallium/drivers/llvmpipe/lp_tex_sample_llvm.c @@ -51,10 +51,11 @@ /** - * 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. + * 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 llvmpipe_sampler_dynamic_state { @@ -79,6 +80,9 @@ struct lp_llvm_sampler_soa /** * 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 */ @@ -87,9 +91,11 @@ lp_llvm_texture_member(struct lp_sampler_dynamic_state *base, LLVMBuilderRef builder, unsigned unit, unsigned member_index, - const char *member_name) + const char *member_name, + boolean emit_load) { - struct llvmpipe_sampler_dynamic_state *state = (struct llvmpipe_sampler_dynamic_state *)base; + struct llvmpipe_sampler_dynamic_state *state = + (struct llvmpipe_sampler_dynamic_state *)base; LLVMValueRef indices[4]; LLVMValueRef ptr; LLVMValueRef res; @@ -107,7 +113,10 @@ lp_llvm_texture_member(struct lp_sampler_dynamic_state *base, ptr = LLVMBuildGEP(builder, state->context_ptr, indices, Elements(indices), ""); - res = LLVMBuildLoad(builder, ptr, ""); + if (emit_load) + res = LLVMBuildLoad(builder, ptr, ""); + else + res = ptr; lp_build_name(res, "context.texture%u.%s", unit, member_name); @@ -116,26 +125,30 @@ lp_llvm_texture_member(struct lp_sampler_dynamic_state *base, /** - * 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. + * 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. + * 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 LP_LLVM_TEXTURE_MEMBER(_name, _index) \ +#define LP_LLVM_TEXTURE_MEMBER(_name, _index, _emit_load) \ static LLVMValueRef \ lp_llvm_texture_##_name( struct lp_sampler_dynamic_state *base, \ LLVMBuilderRef builder, \ unsigned unit) \ { \ - return lp_llvm_texture_member(base, builder, unit, _index, #_name ); \ + return lp_llvm_texture_member(base, builder, unit, _index, #_name, _emit_load ); \ } -LP_LLVM_TEXTURE_MEMBER(width, LP_JIT_TEXTURE_WIDTH) -LP_LLVM_TEXTURE_MEMBER(height, LP_JIT_TEXTURE_HEIGHT) -LP_LLVM_TEXTURE_MEMBER(stride, LP_JIT_TEXTURE_STRIDE) -LP_LLVM_TEXTURE_MEMBER(data_ptr, LP_JIT_TEXTURE_DATA) +LP_LLVM_TEXTURE_MEMBER(width, LP_JIT_TEXTURE_WIDTH, TRUE) +LP_LLVM_TEXTURE_MEMBER(height, LP_JIT_TEXTURE_HEIGHT, TRUE) +LP_LLVM_TEXTURE_MEMBER(depth, LP_JIT_TEXTURE_DEPTH, TRUE) +LP_LLVM_TEXTURE_MEMBER(last_level, LP_JIT_TEXTURE_LAST_LEVEL, TRUE) +LP_LLVM_TEXTURE_MEMBER(stride, LP_JIT_TEXTURE_STRIDE, TRUE) +LP_LLVM_TEXTURE_MEMBER(data_ptr, LP_JIT_TEXTURE_DATA, FALSE) static void @@ -145,6 +158,10 @@ lp_llvm_sampler_soa_destroy(struct lp_build_sampler_soa *sampler) } +/** + * Fetch filtered values from texture. + * The 'texel' parameter returns four vectors corresponding to R, G, B, A. + */ static void lp_llvm_sampler_soa_emit_fetch_texel(struct lp_build_sampler_soa *base, LLVMBuilderRef builder, @@ -185,6 +202,8 @@ lp_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state, sampler->base.emit_fetch_texel = lp_llvm_sampler_soa_emit_fetch_texel; sampler->dynamic_state.base.width = lp_llvm_texture_width; sampler->dynamic_state.base.height = lp_llvm_texture_height; + sampler->dynamic_state.base.depth = lp_llvm_texture_depth; + sampler->dynamic_state.base.last_level = lp_llvm_texture_last_level; sampler->dynamic_state.base.stride = lp_llvm_texture_stride; sampler->dynamic_state.base.data_ptr = lp_llvm_texture_data_ptr; sampler->dynamic_state.static_state = static_state; |