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[Vulkan] Clamp stacked-texture layer index for Inf/NaN coords

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Co-authored-by: Herman S. <429230+has207@users.noreply.github.com>
This commit is contained in:
goldislead
2026-08-07 19:04:00 -07:00
committed by Radosław Gliński
parent 9e9d3cdd3f
commit 2d5b41080c
1 changed files with 8 additions and 0 deletions
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8
src/xenia/gpu/spirv_shader_translator_fetch.cc
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@@ -1469,6 +1469,14 @@ void SpirvShaderTranslator::ProcessTextureFetchInstruction(
z_stacked = builder_->createNoContractionBinOp(
spv::OpFAdd, type_float_, z_stacked, z_offset);
}
// Clamp the layer index to a valid range so an Inf or NaN coordinate
// does not select an undefined array layer.
z_stacked = builder_->createTriBuiltinCall(
type_float_, ext_inst_glsl_std_450_, GLSLstd450NClamp, z_stacked,
const_float_0_,
builder_->createNoContractionBinOp(
spv::OpFSub, type_float_, z_size,
builder_->makeFloatConstant(1.0f)));
builder_->createBranch(&block_dimension_merge);
// Select one of the two.
builder_->setBuildPoint(&block_dimension_merge);