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Implement RDNA2 64-bit image atomic maximum

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Co-authored-by: shadowbeat070 <70843316+shadowbeat070@users.noreply.github.com>
This commit is contained in:
BlackCAT
2026-10-03 06:08:05 +04:00
committed by nmzik
parent e6cb880adb
commit ef4c5baf3a
19 changed files with 244 additions and 57 deletions
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tests/shaderCfgTests.cpp
+33
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@@ -4269,6 +4269,38 @@ void TestScalarAshrI64Decoder() {
"S_ASHR_I64 is missing from the decoded dump");
}
void TestImageAtomicWidthDecoder() {
using namespace ShaderRecompiler::Decoder;
// Captured PPSA29343 pixel shader: image_atomic_umax v[2:3], v[0:1], s[0:7].
const uint32_t captured[] = {0xf05c0308u, 0x00000200u};
Instruction decoded;
DecodeInstruction(captured, 0, decoded);
Check(decoded.opcode == Opcode::IMAGE_ATOMIC_UMAX &&
decoded.data_bits == 64u && decoded.data_dwords == 2u &&
decoded.dst.reg == 2u && decoded.dmask == 3u && !decoded.glc,
"captured image atomic lost its 64-bit data width");
for (const auto opcode : {0x10u, 0x17u}) {
for (uint32_t mask = 0; mask < 16u; ++mask) {
const uint32_t words[] = {EncodeMimg0(opcode, mask), captured[1]};
DecodeInstruction(words, 0, decoded);
const bool compare_swap = opcode == 0x10u;
const bool supported = mask == (compare_swap ? 3u : 1u) ||
(!compare_swap && mask == 3u);
Check((decoded.opcode != Opcode::UNSUPPORTED) == supported,
"image atomic accepted an invalid or unsupported width mask");
if (supported) {
Check(decoded.data_bits == (!compare_swap && mask == 3u ? 64u : 32u),
"image atomic DMASK selected the wrong data width");
}
}
}
const uint32_t unsupported[] = {EncodeMimg0(0x11u, 3u), captured[1]};
DecodeInstruction(unsupported, 0, decoded);
Check(decoded.opcode == Opcode::UNSUPPORTED && decoded.data_bits == 64u,
"unsupported 64-bit image atomic silently decoded as 32-bit");
}
void TestNewShaderDecoderArchitecture() {
using namespace ShaderRecompiler::Decoder;
@@ -14301,6 +14333,7 @@ int main() {
// ShaderRecompilerComputeTests; keep the distinct decoder contract checks
// here.
TestScalarAshrI64Decoder();
TestImageAtomicWidthDecoder();
TestNewShaderDecoderArchitecture();
TestImageAddressOperands();
TestSopkCompareImmediateExtension();