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gl_shader_decompiler: Implement negate, abs, etc. and lots of cleanup.

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This commit is contained in:
bunnei 2018-04-09 23:39:44 -04:00
parent 7639667562
commit 86135864da
2 changed files with 98 additions and 42 deletions
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81
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -17,6 +17,7 @@ using Tegra::Shader::Attribute;
using Tegra::Shader::Instruction;
using Tegra::Shader::OpCode;
using Tegra::Shader::Register;
using Tegra::Shader::SubOp;
using Tegra::Shader::Uniform;
constexpr u32 PROGRAM_END = MAX_PROGRAM_CODE_LENGTH;
@ -235,27 +236,34 @@ private:
switch (OpCode::GetInfo(instr.opcode).type) {
case OpCode::Type::Arithmetic: {
ASSERT(!instr.nb);
ASSERT(!instr.aa);
ASSERT(!instr.na);
ASSERT(!instr.ab);
ASSERT(!instr.ad);
ASSERT(!instr.alu.abs_d, "unimplemented");
std::string gpr1 = GetRegister(instr.gpr1);
std::string gpr2 = GetRegister(instr.gpr2);
std::string uniform = GetUniform(instr.uniform);
std::string dest = GetRegister(instr.gpr0);
std::string op_a = instr.alu.negate_a ? "-" : "";
op_a += GetRegister(instr.gpr8);
if (instr.alu.abs_a) {
op_a = "abs(" + op_a + ")";
}
std::string op_b = instr.alu.negate_b ? "-" : "";
if (instr.is_b_gpr) {
op_b += GetRegister(instr.gpr20);
} else {
op_b += GetUniform(instr.uniform);
}
if (instr.alu.abs_b) {
op_b = "abs(" + op_b + ")";
}
switch (instr.opcode.EffectiveOpCode()) {
case OpCode::Id::FMUL_C: {
SetDest(0, gpr1, gpr2 + " * " + uniform, 1, 1);
case OpCode::Id::FMUL_C:
case OpCode::Id::FMUL_R: {
SetDest(0, dest, op_a + " * " + op_b, 1, 1);
break;
}
case OpCode::Id::FADD_C: {
SetDest(0, gpr1, gpr2 + " + " + uniform, 1, 1);
break;
}
case OpCode::Id::FFMA_CR: {
SetDest(0, gpr1, gpr2 + " * " + uniform + " + " + GetRegister(instr.gpr3), 1, 1);
case OpCode::Id::FADD_C:
case OpCode::Id::FADD_R: {
SetDest(0, dest, op_a + " + " + op_b, 1, 1);
break;
}
default: {
@ -268,19 +276,48 @@ private:
}
break;
}
case OpCode::Type::Memory: {
ASSERT(instr.attribute.size == 0);
case OpCode::Type::Ffma: {
ASSERT_MSG(!instr.ffma.negate_b, "untested");
ASSERT_MSG(!instr.ffma.negate_c, "untested");
std::string gpr1 = GetRegister(instr.gpr1);
const Attribute::Index attribute = instr.attribute.GetIndex();
std::string dest = GetRegister(instr.gpr0);
std::string op_a = GetRegister(instr.gpr8);
std::string op_b = instr.ffma.negate_b ? "-" : "";
op_b += GetUniform(instr.uniform);
std::string op_c = instr.ffma.negate_c ? "-" : "";
op_c += GetRegister(instr.gpr39);
switch (instr.opcode.EffectiveOpCode()) {
case OpCode::Id::FFMA_CR: {
SetDest(0, dest, op_a + " * " + op_b + " + " + op_c, 1, 1);
break;
}
default: {
LOG_ERROR(HW_GPU, "Unhandled arithmetic FFMA instruction: 0x%02x (%s): 0x%08x",
(int)instr.opcode.EffectiveOpCode(), OpCode::GetInfo(instr.opcode).name,
instr.hex);
throw DecompileFail("Unhandled instruction");
break;
}
}
break;
}
case OpCode::Type::Memory: {
std::string gpr0 = GetRegister(instr.gpr0);
const Attribute::Index attribute = instr.attribute.fmt20.index;
switch (instr.opcode.EffectiveOpCode()) {
case OpCode::Id::LD_A: {
SetDest(instr.attribute.element, gpr1, GetInputAttribute(attribute), 1, 4);
ASSERT(instr.attribute.fmt20.size == 0);
SetDest(instr.attribute.fmt20.element, gpr0, GetInputAttribute(attribute), 1, 4);
break;
}
case OpCode::Id::ST_A: {
SetDest(instr.attribute.element, GetOutputAttribute(attribute), gpr1, 4, 1);
ASSERT(instr.attribute.fmt20.size == 0);
SetDest(instr.attribute.fmt20.element, GetOutputAttribute(attribute), gpr0, 4, 1);
break;
}
default: {