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Merge pull request #495 from bunnei/improve-rro 

gl_shader_decompiler: Implement RRO as a register move.
This commit is contained in:
bunnei 2018-06-03 12:05:26 -04:00 committed by GitHub
parent 41faeeeb03 e54ea773fc
commit 27c0f9e02d
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 18 additions and 9 deletions
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8
src/video_core/engines/shader_bytecode.h
View File

@ -298,7 +298,9 @@ public:
FMUL_IMM,
FMUL32_IMM,
MUFU, // Multi-Function Operator
RRO, // Range Reduction Operator
RRO_C, // Range Reduction Operator
RRO_R,
RRO_IMM,
F2F_C,
F2F_R,
F2F_IMM,
@ -459,7 +461,9 @@ private:
INST("0011100-01101---", Id::FMUL_IMM, Type::Arithmetic, "FMUL_IMM"),
INST("00011110--------", Id::FMUL32_IMM, Type::Arithmetic, "FMUL32_IMM"),
INST("0101000010000---", Id::MUFU, Type::Arithmetic, "MUFU"),
INST("0101110010010---", Id::RRO, Type::Arithmetic, "RRO"),
INST("0100110010010---", Id::RRO_C, Type::Arithmetic, "RRO_C"),
INST("0101110010010---", Id::RRO_R, Type::Arithmetic, "RRO_R"),
INST("0011100-10010---", Id::RRO_IMM, Type::Arithmetic, "RRO_IMM"),
INST("0100110010101---", Id::F2F_C, Type::Conversion, "F2F_C"),
INST("0101110010101---", Id::F2F_R, Type::Conversion, "F2F_R"),
INST("0011100-10101---", Id::F2F_IMM, Type::Conversion, "F2F_IMM"),

17
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View File

@ -792,8 +792,13 @@ private:
1, 1);
break;
}
case OpCode::Id::RRO: {
NGLOG_DEBUG(HW_GPU, "Skipping RRO instruction");
case OpCode::Id::RRO_C:
case OpCode::Id::RRO_R:
case OpCode::Id::RRO_IMM: {
// Currently RRO is only implemented as a register move.
// Usage of `abs_b` and `negate_b` here should also be correct.
regs.SetRegisterToFloat(instr.gpr0, 0, op_b, 1, 1);
NGLOG_WARNING(HW_GPU, "RRO instruction is incomplete");
break;
}
default: {
@ -897,8 +902,8 @@ private:
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
const std::string sampler = GetSampler(instr.sampler);
const std::string coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
// Add an extra scope and declare the texture coords inside to prevent overwriting
// them in case they are used as outputs of the texs instruction.
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine("{");
++shader.scope;
shader.AddLine(coord);
@ -961,8 +966,8 @@ private:
'(' + predicate + ") " + combiner + " (" + second_pred + ')');
if (instr.fsetp.pred0 != static_cast<u64>(Pred::UnusedIndex)) {
// Set the secondary predicate to the result of !Predicate OP SecondPredicate, if
// enabled
// Set the secondary predicate to the result of !Predicate OP SecondPredicate,
// if enabled
SetPredicate(instr.fsetp.pred0,
"!(" + predicate + ") " + combiner + " (" + second_pred + ')');
}