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gl_shader_decompiler: Implement several MUFU subops and abs_d.

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This commit is contained in:
bunnei 2018-04-15 20:59:37 -04:00
parent 59f4ff4659
commit ef2d5ab0c1
1 changed files with 21 additions and 7 deletions
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28
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -241,12 +241,13 @@ private:
* @param value the code representing the value to assign.
*/
void SetDest(u64 elem, const std::string& reg, const std::string& value,
u64 dest_num_components, u64 value_num_components) {
u64 dest_num_components, u64 value_num_components, bool is_abs = false) {
std::string swizzle = ".";
swizzle += "xyzw"[elem];
std::string dest = reg + (dest_num_components != 1 ? swizzle : "");
std::string src = "(" + value + ")" + (value_num_components != 1 ? swizzle : "");
src = is_abs ? "abs(" + src + ")" : src;
shader.AddLine(dest + " = " + src + ";");
}
@ -264,8 +265,6 @@ private:
switch (OpCode::GetInfo(instr.opcode).type) {
case OpCode::Type::Arithmetic: {
ASSERT_MSG(!instr.alu.abs_d, "unimplemented");
std::string dest = GetRegister(instr.gpr0);
std::string op_a = instr.alu.negate_a ? "-" : "";
op_a += GetRegister(instr.gpr8);
@ -304,8 +303,26 @@ private:
}
case OpCode::Id::MUFU: {
switch (instr.sub_op) {
case SubOp::Cos:
SetDest(0, dest, "cos(" + op_a + ")", 1, 1, instr.alu.abs_d);
break;
case SubOp::Sin:
SetDest(0, dest, "sin(" + op_a + ")", 1, 1, instr.alu.abs_d);
break;
case SubOp::Ex2:
SetDest(0, dest, "exp2(" + op_a + ")", 1, 1, instr.alu.abs_d);
break;
case SubOp::Lg2:
SetDest(0, dest, "log2(" + op_a + ")", 1, 1, instr.alu.abs_d);
break;
case SubOp::Rcp:
SetDest(0, dest, "1.0 / " + op_a, 1, 1);
SetDest(0, dest, "1.0 / " + op_a, 1, 1, instr.alu.abs_d);
break;
case SubOp::Rsq:
SetDest(0, dest, "inversesqrt(" + op_a + ")", 1, 1, instr.alu.abs_d);
break;
case SubOp::Min:
SetDest(0, dest, "min(" + op_a + "," + op_b + ")", 1, 1, instr.alu.abs_d);
break;
default:
LOG_ERROR(HW_GPU, "Unhandled sub op: 0x%02x", (int)instr.sub_op.Value());
@ -324,9 +341,6 @@ private:
break;
}
case OpCode::Type::Ffma: {
ASSERT_MSG(!instr.ffma.negate_b, "untested");
ASSERT_MSG(!instr.ffma.negate_c, "untested");
std::string dest = GetRegister(instr.gpr0);
std::string op_a = GetRegister(instr.gpr8);
std::string op_b = instr.ffma.negate_b ? "-" : "";