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[SPIR-V] Fix tfetches with an offset

This commit is contained in:
DrChat 2017-12-22 23:15:18 -06:00
parent 20099e51af
commit 516c113423
1 changed files with 20 additions and 8 deletions
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28
src/xenia/gpu/spirv_shader_translator.cc
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@ -1465,19 +1465,29 @@ void SpirvShaderTranslator::ProcessTextureFetchInstruction(
params.sampler = image;
params.lod = b.makeIntConstant(0);
size = b.createTextureQueryCall(spv::Op::OpImageQuerySizeLod, params);
if (instr.dimension == TextureDimension::k1D) {
size = b.createUnaryOp(spv::Op::OpConvertSToF, float_type_, size);
} else if (instr.dimension == TextureDimension::k2D) {
size =
b.createUnaryOp(spv::Op::OpConvertSToF, vec2_float_type_, size);
} else if (instr.dimension == TextureDimension::k3D) {
size =
b.createUnaryOp(spv::Op::OpConvertSToF, vec3_float_type_, size);
} else if (instr.dimension == TextureDimension::kCube) {
size =
b.createUnaryOp(spv::Op::OpConvertSToF, vec4_float_type_, size);
}
}
if (instr.dimension == TextureDimension::k1D) {
src = b.createCompositeExtract(src, float_type_, 0);
if (instr.attributes.offset_x) {
auto offset = b.makeCompositeConstant(
vec2_float_type_,
std::vector<Id>(
{b.makeFloatConstant(instr.attributes.offset_x + 0.5f),
b.makeFloatConstant(0.f)}));
offset =
b.createBinOp(spv::Op::OpFDiv, vec2_float_type_, offset, size);
src = b.createBinOp(spv::Op::OpFAdd, vec2_float_type_, src, offset);
auto offset = b.makeFloatConstant(instr.attributes.offset_x + 0.5f);
offset = b.createBinOp(spv::Op::OpFDiv, float_type_, offset, size);
src = b.createBinOp(spv::Op::OpFAdd, float_type_, src, offset);
}
// https://msdn.microsoft.com/en-us/library/windows/desktop/bb944006.aspx
// "Because the runtime does not support 1D textures, the compiler will
// use a 2D texture with the knowledge that the y-coordinate is
@ -1486,6 +1496,8 @@ void SpirvShaderTranslator::ProcessTextureFetchInstruction(
vec2_float_type_,
std::vector<Id>({src, b.makeFloatConstant(0.0f)}));
} else if (instr.dimension == TextureDimension::k2D) {
src = b.createRvalueSwizzle(spv::NoPrecision, vec2_float_type_, src,
std::vector<uint32_t>({0, 1}));
if (instr.attributes.offset_x || instr.attributes.offset_y) {
auto offset = b.makeCompositeConstant(
vec2_float_type_,