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gl_shader_decompiler: Implement TEXS.F16

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This commit is contained in:
ReinUsesLisp 2018-12-05 01:33:36 -03:00
parent 370980fdc3
commit 59a8df1b14
2 changed files with 51 additions and 13 deletions
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3
src/video_core/engines/shader_bytecode.h
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@ -1049,6 +1049,7 @@ union Instruction {
BitField<49, 1, u64> nodep_flag;
BitField<50, 3, u64> component_mask_selector;
BitField<53, 4, u64> texture_info;
BitField<60, 1, u64> fp32_flag;
TextureType GetTextureType() const {
// The TEXS instruction has a weird encoding for the texture type.
@ -1549,7 +1550,7 @@ private:
INST("1110111011011---", Id::STG, Type::Memory, "STG"),
INST("110000----111---", Id::TEX, Type::Memory, "TEX"),
INST("1101111101001---", Id::TXQ, Type::Memory, "TXQ"),
INST("1101100---------", Id::TEXS, Type::Memory, "TEXS"),
INST("1101-00---------", Id::TEXS, Type::Memory, "TEXS"),
INST("1101101---------", Id::TLDS, Type::Memory, "TLDS"),
INST("110010----111---", Id::TLD4, Type::Memory, "TLD4"),
INST("1101111100------", Id::TLD4S, Type::Memory, "TLD4S"),

61
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -50,6 +50,14 @@ public:
using std::runtime_error::runtime_error;
};
/// Generates code to use for a swizzle operation.
static std::string GetSwizzle(u64 elem) {
ASSERT(elem <= 3);
std::string swizzle = ".";
swizzle += "xyzw"[elem];
return swizzle;
}
/// Translate topology
static std::string GetTopologyName(Tegra::Shader::OutputTopology topology) {
switch (topology) {
@ -1004,14 +1012,6 @@ private:
}
}
/// Generates code to use for a swizzle operation.
static std::string GetSwizzle(u64 elem) {
ASSERT(elem <= 3);
std::string swizzle = ".";
swizzle += "xyzw"[elem];
return swizzle;
}
ShaderWriter& shader;
ShaderWriter& declarations;
std::vector<GLSLRegister> regs;
@ -1343,7 +1343,7 @@ private:
regs.SetRegisterToInteger(dest, true, 0, result, 1, 1);
}
void WriteTexsInstruction(const Instruction& instr, const std::string& texture) {
void WriteTexsInstructionFloat(const Instruction& instr, const std::string& texture) {
// TEXS has two destination registers and a swizzle. The first two elements in the swizzle
// go into gpr0+0 and gpr0+1, and the rest goes into gpr28+0 and gpr28+1
@ -1368,6 +1368,38 @@ private:
}
}
void WriteTexsInstructionHalfFloat(const Instruction& instr, const std::string& texture) {
// TEXS.F16 destionation registers are packed in two registers in pairs (just like any half
// float instruction).
std::array<std::string, 4> components;
u32 written_components = 0;
for (u32 component = 0; component < 4; ++component) {
if (!instr.texs.IsComponentEnabled(component))
continue;
components[written_components++] = texture + GetSwizzle(component);
}
if (written_components == 0)
return;
const auto BuildComponent = [&](std::string low, std::string high, bool high_enabled) {
return "vec2(" + low + ", " + (high_enabled ? high : "0") + ')';
};
regs.SetRegisterToHalfFloat(
instr.gpr0, 0, BuildComponent(components[0], components[1], written_components > 1),
Tegra::Shader::HalfMerge::H0_H1, 1, 1);
if (written_components > 2) {
ASSERT(instr.texs.HasTwoDestinations());
regs.SetRegisterToHalfFloat(
instr.gpr28, 0,
BuildComponent(components[2], components[3], written_components > 3),
Tegra::Shader::HalfMerge::H0_H1, 1, 1);
}
}
static u32 TextureCoordinates(Tegra::Shader::TextureType texture_type) {
switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D:
@ -2782,7 +2814,11 @@ private:
}
shader.AddLine("vec4 texture_tmp = " + texture + ';');
WriteTexsInstruction(instr, "texture_tmp");
if (instr.texs.fp32_flag) {
WriteTexsInstructionFloat(instr, "texture_tmp");
} else {
WriteTexsInstructionHalfFloat(instr, "texture_tmp");
}
break;
}
case OpCode::Id::TLDS: {
@ -2841,7 +2877,7 @@ private:
}
}();
WriteTexsInstruction(instr, texture);
WriteTexsInstructionFloat(instr, texture);
break;
}
case OpCode::Id::TLD4: {
@ -2939,7 +2975,8 @@ private:
if (depth_compare) {
texture = "vec4(" + texture + ')';
}
WriteTexsInstruction(instr, texture);
WriteTexsInstructionFloat(instr, texture);
break;
}
case OpCode::Id::TXQ: {