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Recognize null-destination SWAPPC shader handoffs

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Credits:
BlackCAT (@psnwd):
https://github.com/KytyPS5/KytyPS5/pull/613
YuhiAida (@YuhiAida):
https://github.com/KytyPS5/KytyPS5/pull/655
This commit is contained in:
nmzik
2026-09-17 08:45:21 +04:00
parent e0ecffed70
commit 235e24d44f
2 changed files with 19 additions and 12 deletions
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tests/shaderCfgTests.cpp
+15 -12
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@@ -9435,7 +9435,7 @@ void TestNewShaderRecompilerSetpcBranch() {
void TestFusedShaderHandoffPreservesRegisters() {
using namespace ShaderRecompiler;
const uint32_t front[] = {
uint32_t front[] = {
EncodeSMovB32(12, 255), 0x1003u, // three vertices and one primitive
EncodeSop1(0x20, 0, 6), // merged-stage handoff through s[6:7]
0xffffffffu, // front shader metadata must not be decoded
@@ -9454,20 +9454,23 @@ void TestFusedShaderHandoffPreservesRegisters() {
options.stage = ShaderType::Mesh;
options.input_info.vertex = &input;
options.back_code = back;
auto translated = TranslateProgram(front, options);
uint32_t allocations = 0;
for (const auto* block: translated.program.blocks) {
for (const auto& inst: *block) {
if (inst.GetOpcode() != IR::ValueOpcode::MeshAllocate) {
continue;
for (const auto handoff: {EncodeSop1(0x20, 0, 6), 0xbefd2106u}) {
front[2] = handoff; // SETPC or captured SWAPPC with NULL destination
auto translated = TranslateProgram(front, options);
uint32_t allocations = 0;
for (const auto* block: translated.program.blocks) {
for (const auto& inst: *block) {
if (inst.GetOpcode() != IR::ValueOpcode::MeshAllocate) {
continue;
}
const auto value = inst.Arg(0).Resolve();
Check(value.IsImmediate() && value.U32() == 0x1003u,
"fused back shader lost the front shader's scalar register value");
allocations++;
}
const auto value = inst.Arg(0).Resolve();
Check(value.IsImmediate() && value.U32() == 0x1003u,
"fused back shader lost the front shader's scalar register value");
allocations++;
}
Check(allocations == 1u, "fused shader omitted the back shader allocation");
}
Check(allocations == 1u, "fused shader omitted the back shader allocation");
}
void TestMeshExportStorage() {