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shader: recognize remaining disabled debug branches

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Mac
2026-10-10 04:31:24 +02:00
committed by nmzik
parent fa56c5eae9
commit 679be25c37
5 changed files with 20 additions and 5 deletions
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src/graphics/shader/recompiler/frontend/decode/ScalarAluOps.cpp
+2
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@@ -116,7 +116,9 @@ constexpr OpcodeMap SOPP_OPCODE_LIST[] = {
{0x12u, Opcode::S_TRAP},
{0x16u, Opcode::S_TTRACEDATA},
{0x17u, Opcode::S_CBRANCH_CDBGSYS},
{0x18u, Opcode::S_CBRANCH_CDBGUSER},
{0x19u, Opcode::S_CBRANCH_CDBGSYS_OR_USER},
{0x1au, Opcode::S_CBRANCH_CDBGSYS_AND_USER},
{0x20u, Opcode::S_INST_PREFETCH},
{0x23u, Opcode::S_WAITCNT_DEPCTR},
};
src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.cpp
+5 -1
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@@ -186,7 +186,9 @@ bool IsConditionalBranch(Opcode opcode) {
switch (opcode) {
// Conditional shader debugging is disabled.
case Opcode::S_CBRANCH_CDBGSYS:
case Opcode::S_CBRANCH_CDBGSYS_OR_USER: return false;
case Opcode::S_CBRANCH_CDBGUSER:
case Opcode::S_CBRANCH_CDBGSYS_OR_USER:
case Opcode::S_CBRANCH_CDBGSYS_AND_USER: return false;
case Opcode::S_CBRANCH_SCC0:
case Opcode::S_CBRANCH_SCC1:
case Opcode::S_CBRANCH_VCCZ:
@@ -575,7 +577,9 @@ std::string InstructionToString(const Instruction& inst) {
case Opcode::S_CBRANCH_EXECZ:
case Opcode::S_CBRANCH_EXECNZ:
case Opcode::S_CBRANCH_CDBGSYS:
case Opcode::S_CBRANCH_CDBGUSER:
case Opcode::S_CBRANCH_CDBGSYS_OR_USER:
case Opcode::S_CBRANCH_CDBGSYS_AND_USER:
return WithUnsupportedReason(inst, fmt::format("0x{:08x}: {} 0x{:08x}", inst.pc,
magic_enum::enum_name(inst.opcode),
inst.branch_target));
src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.h
+2
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@@ -714,7 +714,9 @@ enum class Opcode {
S_CBRANCH_EXECZ,
S_CBRANCH_EXECNZ,
S_CBRANCH_CDBGSYS,
S_CBRANCH_CDBGUSER,
S_CBRANCH_CDBGSYS_OR_USER,
S_CBRANCH_CDBGSYS_AND_USER,
S_SENDMSG,
S_GETREG_B32,
S_SETREG_B32,
src/graphics/shader/recompiler/frontend/translate/Scalar.cpp
+2
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@@ -279,7 +279,9 @@ void Translator::EmitScalar(const Decoder::Instruction& inst) {
case O::S_CBRANCH_EXECZ:
case O::S_CBRANCH_EXECNZ:
case O::S_CBRANCH_CDBGSYS:
case O::S_CBRANCH_CDBGUSER:
case O::S_CBRANCH_CDBGSYS_OR_USER:
case O::S_CBRANCH_CDBGSYS_AND_USER:
case O::S_ENDPGM: return;
default: return FailMissingTranslation(inst);
}
tests/shaderCfgTests.cpp
+9 -4
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@@ -1945,14 +1945,18 @@ void TestSopkCompareImmediateExtension() {
void TestDisabledDebugBranches() {
using namespace ShaderRecompiler;
// Both debug branches fall through when conditional shader debugging is disabled.
// Debug branches fall through when conditional shader debugging is disabled.
// Retain the post-ENDPGM helper displacement from PPSA08709 and exercise the
// OR_USER variant encountered in PPSA03671 with the same body.
for (const auto opcode : {Decoder::Opcode::S_CBRANCH_CDBGSYS,
Decoder::Opcode::S_CBRANCH_CDBGSYS_OR_USER}) {
const std::pair<uint32_t, Decoder::Opcode> branches[] = {
{0x17, Decoder::Opcode::S_CBRANCH_CDBGSYS},
{0x18, Decoder::Opcode::S_CBRANCH_CDBGUSER},
{0x19, Decoder::Opcode::S_CBRANCH_CDBGSYS_OR_USER},
{0x1a, Decoder::Opcode::S_CBRANCH_CDBGSYS_AND_USER}};
for (const auto [encoding, opcode] : branches) {
std::array<uint32_t, 274> shader;
shader.fill(EncodeSopp(0x00));
shader[0] = EncodeSopp(opcode == Decoder::Opcode::S_CBRANCH_CDBGSYS ? 0x17 : 0x19, 0x10f);
shader[0] = EncodeSopp(encoding, 0x10f);
shader[1] = EncodeVop1(0x01, 1, 129);
shader[2] = EncodeMubuf0(0x1c, 0, false);
shader[3] = EncodeMubuf1(1, 0, 0);
@@ -1962,6 +1966,7 @@ void TestDisabledDebugBranches() {
Decoder::Program decoded;
Decoder::DecodeProgram(shader, decoded);
Check(decoded.instructions.front().opcode == opcode &&
decoded.instructions.front().opcode_id == encoding &&
decoded.instructions.front().branch_target == 0x440u &&
decoded.instructions.back().pc == 0x43cu &&
decoded.instructions.back().opcode == Decoder::Opcode::S_ENDPGM,