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[SPIR-V] Saturate point sprite coordinates

This commit is contained in:
Triang3l 2022-07-26 17:04:22 +03:00
parent 8fb5da18ea
commit 66c995f3aa
1 changed files with 10 additions and 1 deletions
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11
src/xenia/gpu/spirv_shader_translator.cc
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@ -1619,8 +1619,17 @@ void SpirvShaderTranslator::StartFragmentShaderInMain() {
spv::Id param_gen_z, param_gen_w;
if (modification.pixel.param_gen_point) {
assert_true(input_point_coordinates_ != spv::NoResult);
// Saturate to avoid negative point coordinates if the center of the pixel
// is not covered, and extrapolation is done.
id_vector_temp_.clear();
id_vector_temp_.reserve(3);
id_vector_temp_.push_back(
builder_->createLoad(input_point_coordinates_, spv::NoPrecision));
id_vector_temp_.push_back(const_float2_0_);
id_vector_temp_.push_back(const_float2_1_);
spv::Id param_gen_point_coordinates =
builder_->createLoad(input_point_coordinates_, spv::NoPrecision);
builder_->createBuiltinCall(type_float2_, ext_inst_glsl_std_450_,
GLSLstd450NClamp, id_vector_temp_);
param_gen_z = builder_->createCompositeExtract(
param_gen_point_coordinates, type_float_, 0);
param_gen_w = builder_->createCompositeExtract(