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shader: decode unsigned byte loads into preserved low halves

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Co-authored-by: fxpw <fxpw@outlook.com>
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nmzikandfxpw committed 2026-10-14 18:21:58 +02:00
1 parent 302240da70
commit e0586cc85a
6 files changed
+71 -13
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tests/shaderCfgTests.cpp
+19
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@@ -15357,6 +15357,24 @@ void TestGraphicsPushConstantPlacement() {
CheckSpirvBinaryValidates(spill.spirv);
}
void TestCapturedBufferLoadUbyteD16Decode() {
namespace Decoder = ShaderRecompiler::Decoder;
const uint32_t code[] = {0xe080e000u, 0x80040003u};
Decoder::Instruction inst;
Decoder::DecodeInstruction(code, 0, inst);
Check(inst.opcode == Decoder::Opcode::BUFFER_LOAD_UBYTE_D16 &&
inst.word_count == 2 && inst.data_dwords == 1 && inst.data_bits == 8 &&
!inst.data_signed && !inst.formatted && !inst.typed,
"captured BUFFER_LOAD_UBYTE_D16 lost its unsigned byte payload");
Check(inst.dst.kind == Decoder::OperandKind::Vgpr && inst.dst.reg == 0 &&
inst.dst.sdwa_sel == 4 && inst.dst.sdwa_dst_unused == 2 &&
inst.src0.kind == Decoder::OperandKind::Vgpr && inst.src0.reg == 3 &&
inst.src1.kind == Decoder::OperandKind::Sgpr && inst.src1.reg == 16 &&
inst.src2.kind == Decoder::OperandKind::IntegerInlineConstant && inst.src2.value == 0 &&
inst.idxen && !inst.offen && inst.offset == 0 && inst.glc && inst.dlc && !inst.slc,
"captured BUFFER_LOAD_UBYTE_D16 lost its preserved half, address, or coherence flags");
}
void TestNewShaderRecompilerUnsupportedMemoryDecode() {
const uint32_t mubuf_unknown[] = {EncodeMubuf0(0x7b), EncodeMubuf1(0, 0, 1),
0xbf810000u};
@@ -16040,6 +16058,7 @@ int main() {
TestComputeLdsAllocationIdentity();
TestPixelProgramCacheBindingIdentity();
TestGraphicsPushConstantPlacement();
TestCapturedBufferLoadUbyteD16Decode();
TestNewShaderRecompilerUnsupportedMemoryDecode();
TestNewShaderRecompilerVop3LaneReadDestinationEncoding();