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Merge pull request #574 from Subv/shader_abs_neg 

GPU: Perform negation after absolute value in the float shader instructions.
This commit is contained in:
bunnei 2018-06-18 22:24:57 -04:00 committed by GitHub
parent 0d8ae773f1 38989bef43
commit 7a0bb406d5
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 7 deletions
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21
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -822,22 +822,25 @@ private:
switch (opcode->GetType()) { switch (opcode->GetType()) {
case OpCode::Type::Arithmetic: { case OpCode::Type::Arithmetic: {
std::string op_a = instr.alu.negate_a ? "-" : ""; std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
op_a += regs.GetRegisterAsFloat(instr.gpr8);
if (instr.alu.abs_a) { if (instr.alu.abs_a) {
op_a = "abs(" + op_a + ')'; op_a = "abs(" + op_a + ')';
} }
std::string op_b = instr.alu.negate_b ? "-" : ""; if (instr.alu.negate_a) {
op_a = "-(" + op_a + ')';
}
std::string op_b;
if (instr.is_b_imm) { if (instr.is_b_imm) {
op_b += GetImmediate19(instr); op_b = GetImmediate19(instr);
} else { } else {
if (instr.is_b_gpr) { if (instr.is_b_gpr) {
op_b += regs.GetRegisterAsFloat(instr.gpr20); op_b = regs.GetRegisterAsFloat(instr.gpr20);
} else { } else {
op_b += regs.GetUniform(instr.cbuf34.index, instr.cbuf34.offset, op_b = regs.GetUniform(instr.cbuf34.index, instr.cbuf34.offset,
GLSLRegister::Type::Float); GLSLRegister::Type::Float);
} }
} }
@ -845,6 +848,10 @@ private:
op_b = "abs(" + op_b + ')'; op_b = "abs(" + op_b + ')';
} }
if (instr.alu.negate_b) {
op_b = "-(" + op_b + ')';
}
switch (opcode->GetId()) { switch (opcode->GetId()) {
case OpCode::Id::MOV_C: case OpCode::Id::MOV_C:
case OpCode::Id::MOV_R: { case OpCode::Id::MOV_R: {