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Merge pull request #554 from DrChat/spv_translator 

Fix texture fetches
This commit is contained in:
Ben Vanik 2016-02-21 20:36:03 -08:00
parent 5e31c51a3d 08a287d2ad
commit 652518ff59
1 changed files with 29 additions and 14 deletions
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43
src/xenia/gpu/spirv_shader_translator.cc
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@ -620,17 +620,27 @@ void SpirvShaderTranslator::ProcessTextureFetchInstruction(
uint32_t dim_idx = 0;
switch (instr.dimension) {
case TextureDimension::k1D:
src = b.createCompositeExtract(src, float_type_, 0);
dim_idx = 0;
break;
case TextureDimension::k2D:
case TextureDimension::k2D: {
auto s0 = b.createCompositeExtract(src, float_type_, 0);
auto s1 = b.createCompositeExtract(src, float_type_, 1);
src = b.createCompositeConstruct(vec2_float_type_,
std::vector<Id>({s0, s1}));
dim_idx = 1;
break;
case TextureDimension::k3D:
} break;
case TextureDimension::k3D: {
auto s0 = b.createCompositeExtract(src, float_type_, 0);
auto s1 = b.createCompositeExtract(src, float_type_, 1);
auto s2 = b.createCompositeExtract(src, float_type_, 2);
src = b.createCompositeConstruct(vec3_float_type_,
std::vector<Id>({s0, s1, s2}));
dim_idx = 2;
break;
case TextureDimension::kCube:
} break;
case TextureDimension::kCube: {
dim_idx = 3;
break;
} break;
default:
assert_unhandled_case(instr.dimension);
}
@ -638,19 +648,24 @@ void SpirvShaderTranslator::ProcessTextureFetchInstruction(
switch (instr.opcode) {
case FetchOpcode::kTextureFetch: {
auto image_index = b.makeUintConstant(instr.operands[1].storage_index);
auto image_ptr =
b.createAccessChain(spv::StorageClass::StorageClassUniformConstant,
img_[dim_idx], std::vector<Id>({image_index}));
auto sampler_ptr =
b.createAccessChain(spv::StorageClass::StorageClassUniformConstant,
samplers_, std::vector<Id>({image_index}));
auto image_ptr = b.createAccessChain(
spv::StorageClass::StorageClassUniformConstant, img_[dim_idx],
std::vector<Id>({b.makeUintConstant(0), image_index}));
auto sampler_ptr = b.createAccessChain(
spv::StorageClass::StorageClassUniformConstant, samplers_,
std::vector<Id>({b.makeUintConstant(0), image_index}));
auto image = b.createLoad(image_ptr);
auto sampler = b.createLoad(sampler_ptr);
auto tex = b.createBinOp(spv::Op::OpSampledImage, b.getImageType(image),
image, sampler);
dest = b.createBinOp(spv::Op::OpImageSampleImplicitLod, vec4_float_type_,
tex, src);
spv::Builder::TextureParameters params = {0};
params.coords = src;
params.sampler = sampler;
dest = b.createTextureCall(spv::Decoration::DecorationInvariant,
vec4_float_type_, false, false, false, false,
false, params);
} break;
default:
// TODO: the rest of these