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gl_shader_decompiler: Implement integer size conversions for I2I/I2F/F2I.

nce_cpp
bunnei 8 years ago
parent
288b9170c5
commit
dc1808fa4a
2 changed files with 43 additions and 14 deletions
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  1. 3
      src/video_core/engines/shader_bytecode.h
  2. 54
      src/video_core/renderer_opengl/gl_shader_decompiler.cpp

3
src/video_core/engines/shader_bytecode.h
View File

@ -343,7 +343,8 @@ union Instruction {
} iset;
union {
BitField<10, 2, Register::Size> size;
BitField<8, 2, Register::Size> dest_size;
BitField<10, 2, Register::Size> src_size;
BitField<12, 1, u64> is_output_signed;
BitField<13, 1, u64> is_input_signed;
BitField<41, 2, u64> selector;

54
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View File

@ -265,6 +265,27 @@ public:
BuildRegisterList();
}
/**
* Returns code that does an integer size conversion for the specified size.
* @param value Value to perform integer size conversion on.
* @param size Register size to use for conversion instructions.
* @returns GLSL string corresponding to the value converted to the specified size.
*/
static std::string ConvertIntegerSize(const std::string& value, Register::Size size) {
switch (size) {
case Register::Size::Byte:
return "((" + value + " << 24) >> 24)";
case Register::Size::Short:
return "((" + value + " << 16) >> 16)";
case Register::Size::Word:
// Default - do nothing
return value;
default:
NGLOG_CRITICAL(HW_GPU, "Unimplemented conversion size {}", static_cast<u32>(size));
UNREACHABLE();
}
}
/**
* Gets a register as an float.
* @param reg The register to get.
@ -281,15 +302,18 @@ public:
* @param reg The register to get.
* @param elem The element to use for the operation.
* @param is_signed Whether to get the register as a signed (or unsigned) integer.
* @param size Register size to use for conversion instructions.
* @returns GLSL string corresponding to the register as an integer.
*/
std::string GetRegisterAsInteger(const Register& reg, unsigned elem = 0,
bool is_signed = true) {
std::string GetRegisterAsInteger(const Register& reg, unsigned elem = 0, bool is_signed = true,
Register::Size size = Register::Size::Word) {
const std::string func = GetGLSLConversionFunc(
GLSLRegister::Type::Float,
is_signed ? GLSLRegister::Type::Integer : GLSLRegister::Type::UnsignedInteger);
return func + '(' + GetRegister(reg, elem) + ')';
std::string value = func + '(' + GetRegister(reg, elem) + ')';
return ConvertIntegerSize(value, size);
}
/**
@ -319,19 +343,20 @@ public:
* @param value_num_components Number of components in the value.
* @param is_saturated Optional, when True, saturates the provided value.
* @param dest_elem Optional, the destination element to use for the operation.
* @param size Register size to use for conversion instructions.
*/
void SetRegisterToInteger(const Register& reg, bool is_signed, u64 elem,
const std::string& value, u64 dest_num_components,
u64 value_num_components, bool is_saturated = false,
u64 dest_elem = 0) {
u64 dest_elem = 0, Register::Size size = Register::Size::Word) {
ASSERT_MSG(!is_saturated, "Unimplemented");
const std::string func = GetGLSLConversionFunc(
is_signed ? GLSLRegister::Type::Integer : GLSLRegister::Type::UnsignedInteger,
GLSLRegister::Type::Float);
SetRegister(reg, elem, func + '(' + value + ')', dest_num_components, value_num_components,
dest_elem);
SetRegister(reg, elem, func + '(' + ConvertIntegerSize(value, size) + ')',
dest_num_components, value_num_components, dest_elem);
}
/**
@ -1114,28 +1139,28 @@ private:
break;
}
case OpCode::Type::Conversion: {
ASSERT_MSG(instr.conversion.size == Register::Size::Word, "Unimplemented");
ASSERT_MSG(!instr.conversion.negate_a, "Unimplemented");
switch (opcode->GetId()) {
case OpCode::Id::I2I_R: {
ASSERT_MSG(!instr.conversion.selector, "Unimplemented");
std::string op_a =
regs.GetRegisterAsInteger(instr.gpr20, 0, instr.conversion.is_input_signed);
std::string op_a = regs.GetRegisterAsInteger(
instr.gpr20, 0, instr.conversion.is_input_signed, instr.conversion.src_size);
if (instr.conversion.abs_a) {
op_a = "abs(" + op_a + ')';
}
regs.SetRegisterToInteger(instr.gpr0, instr.conversion.is_output_signed, 0, op_a, 1,
1, instr.alu.saturate_d);
1, instr.alu.saturate_d, 0, instr.conversion.dest_size);
break;
}
case OpCode::Id::I2F_R: {
ASSERT_MSG(instr.conversion.dest_size == Register::Size::Word, "Unimplemented");
ASSERT_MSG(!instr.conversion.selector, "Unimplemented");
std::string op_a =
regs.GetRegisterAsInteger(instr.gpr20, 0, instr.conversion.is_input_signed);
std::string op_a = regs.GetRegisterAsInteger(
instr.gpr20, 0, instr.conversion.is_input_signed, instr.conversion.src_size);
if (instr.conversion.abs_a) {
op_a = "abs(" + op_a + ')';
@ -1145,6 +1170,8 @@ private:
break;
}
case OpCode::Id::F2F_R: {
ASSERT_MSG(instr.conversion.dest_size == Register::Size::Word, "Unimplemented");
ASSERT_MSG(instr.conversion.src_size == Register::Size::Word, "Unimplemented");
std::string op_a = regs.GetRegisterAsFloat(instr.gpr20);
switch (instr.conversion.f2f.rounding) {
@ -1174,6 +1201,7 @@ private:
break;
}
case OpCode::Id::F2I_R: {
ASSERT_MSG(instr.conversion.src_size == Register::Size::Word, "Unimplemented");
std::string op_a = regs.GetRegisterAsFloat(instr.gpr20);
if (instr.conversion.abs_a) {
@ -1206,7 +1234,7 @@ private:
}
regs.SetRegisterToInteger(instr.gpr0, instr.conversion.is_output_signed, 0, op_a, 1,
1);
1, false, 0, instr.conversion.dest_size);
break;
}
default: {

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