diff options
Diffstat (limited to 'src/video_core/shader/decode')
| -rw-r--r-- | src/video_core/shader/decode/other.cpp | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/video_core/shader/decode/other.cpp b/src/video_core/shader/decode/other.cpp index ef0598d4f..0416d7eaa 100644 --- a/src/video_core/shader/decode/other.cpp +++ b/src/video_core/shader/decode/other.cpp @@ -64,7 +64,19 @@ u32 ShaderIR::DecodeOther(BasicBlock& bb, u32 pc) { // The SSY opcode tells the GPU where to re-converge divergent execution paths, it sets the // target of the jump that the SYNC instruction will make. The SSY opcode has a similar // structure to the BRA opcode. - bb.push_back(Operation(OperationCode::Ssy, Immediate(pc + instr.bra.GetBranchTarget()))); + const u32 target = pc + instr.bra.GetBranchTarget(); + bb.push_back(Operation(OperationCode::Ssy, Immediate(target))); + break; + } + case OpCode::Id::PBK: { + UNIMPLEMENTED_IF_MSG(instr.bra.constant_buffer != 0, + "Constant buffer PBK is not supported"); + + // PBK pushes to a stack the address where BRK will jump to. This shares stack with SSY but + // using SYNC on a PBK address will kill the shader execution. We don't emulate this because + // it's very unlikely a driver will emit such invalid shader. + const u32 target = pc + instr.bra.GetBranchTarget(); + bb.push_back(Operation(OperationCode::Pbk, Immediate(target))); break; } case OpCode::Id::SYNC: { @@ -76,6 +88,15 @@ u32 ShaderIR::DecodeOther(BasicBlock& bb, u32 pc) { bb.push_back(Operation(OperationCode::Sync)); break; } + case OpCode::Id::BRK: { + const Tegra::Shader::ConditionCode cc = instr.flow_condition_code; + UNIMPLEMENTED_IF_MSG(cc != Tegra::Shader::ConditionCode::T, "BRK condition code used: {}", + static_cast<u32>(cc)); + + // The BRK opcode jumps to the address previously set by the PBK opcode + bb.push_back(Operation(OperationCode::Brk)); + break; + } case OpCode::Id::IPA: { const auto& attribute = instr.attribute.fmt28; const Tegra::Shader::IpaMode input_mode{instr.ipa.interp_mode.Value(), |