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gl_shader_decompiler: TLDS/TLD4/TLD4S Reworked reflecting the source registers, bugs fixed and modularize.

This commit is contained in:
Marcos Vitali 2018-12-07 19:09:36 -03:00
parent f761e3ef86
commit f4fa7ecb0e
1 changed files with 134 additions and 106 deletions
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230
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -1681,7 +1681,7 @@ private:
for (size_t i = 0; i < coord_count; ++i) {
const bool last = (i == (coord_count - 1)) && (coord_count > 1);
coord += regs.GetRegisterAsFloat(last ? last_coord_register : coord_register + i);
if (!last) {
if (i < coord_count - 1) {
coord += ',';
}
}
@ -1702,6 +1702,99 @@ private:
is_array, (coord_count > 2 ? 1 : 0)));
}
std::pair<std::string, std::string> GetTLD4Code(const Instruction& instr,
const Tegra::Shader::TextureType texture_type,
const bool depth_compare, const bool is_array) {
const size_t coord_count = TextureCoordinates(texture_type);
const size_t total_coord_count = coord_count + (is_array ? 1 : 0);
const size_t total_reg_count = total_coord_count + (depth_compare ? 1 : 0);
constexpr std::array<const char*, 5> coord_container{
{"", "", "vec2 coord = vec2(", "vec3 coord = vec3(", "vec4 coord = vec4("}};
// If enabled arrays index is always stored in the gpr8 field
const u64 array_register = instr.gpr8.Value();
// First coordinate index is the gpr8 or gpr8 + 1 when arrays are used
const u64 coord_register = array_register + (is_array ? 1 : 0);
std::string coord = coord_container[total_coord_count];
for (size_t i = 0; i < coord_count;) {
coord += regs.GetRegisterAsFloat(coord_register + i);
++i;
if (i != coord_count) {
coord += ',';
}
}
if (is_array) {
coord += ',' + regs.GetRegisterAsInteger(array_register);
}
coord += ");";
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, depth_compare);
std::string texture = "textureGather(" + sampler + ", coord, ";
if (depth_compare) {
// Depth is always stored in the register signaled by gpr20
texture += regs.GetRegisterAsFloat(instr.gpr20.Value()) + ')';
} else {
texture += std::to_string(instr.tld4.component) + ')';
}
return std::make_pair(coord, texture);
}
std::pair<std::string, std::string> GetTLDSCode(const Instruction& instr,
const Tegra::Shader::TextureType texture_type,
const bool is_array) {
const size_t coord_count = TextureCoordinates(texture_type);
const size_t total_coord_count = coord_count + (is_array ? 1 : 0);
const bool lod_enabled =
instr.tlds.GetTextureProcessMode() == Tegra::Shader::TextureProcessMode::LL;
constexpr std::array<const char*, 4> coord_container{
{"", "int coord = (", "ivec2 coord = ivec2(", "ivec3 coord = ivec3("}};
std::string coord = coord_container[total_coord_count];
// If enabled arrays index is always stored in the gpr8 field
const u64 array_register = instr.gpr8.Value();
// if is array gpr20 is used
const u64 coord_register = is_array ? instr.gpr20.Value() : instr.gpr8.Value();
const u64 last_coord_register =
((coord_count > 2) || (coord_count == 2 && !lod_enabled)) && !is_array
? static_cast<u64>(instr.gpr20.Value())
: coord_register + 1;
for (size_t i = 0; i < coord_count; ++i) {
const bool last = (i == (coord_count - 1)) && (coord_count > 1);
coord += regs.GetRegisterAsInteger(last ? last_coord_register : coord_register + i);
if (i < coord_count - 1) {
coord += ',';
}
}
if (is_array) {
coord += ',' + regs.GetRegisterAsInteger(array_register);
}
coord += ");";
const std::string sampler = GetSampler(instr.sampler, texture_type, is_array, false);
std::string texture = "texelFetch(" + sampler + ", coords";
if (lod_enabled) {
// When lod is used always is in grp20
texture += ", " + regs.GetRegisterAsInteger(instr.gpr20) + ')';
} else {
texture += ", 0)";
}
return std::make_pair(coord, texture);
}
/**
* Compiles a single instruction from Tegra to GLSL.
* @param offset the offset of the Tegra shader instruction.
@ -2825,9 +2918,6 @@ private:
const Tegra::Shader::TextureType texture_type{instr.tlds.GetTextureType()};
const bool is_array{instr.tlds.IsArrayTexture()};
ASSERT(texture_type == Tegra::Shader::TextureType::Texture2D);
ASSERT(is_array == false);
UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
@ -2835,54 +2925,16 @@ private:
UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(Tegra::Shader::TextureMiscMode::MZ),
"MZ is not implemented");
u32 extra_op_offset = 0;
const auto [coord, texture] = GetTLDSCode(instr, texture_type, is_array);
ShaderScopedScope scope = shader.Scope();
const auto scope = shader.Scope();
switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: {
const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
shader.AddLine("float coords = " + x + ';');
break;
}
case Tegra::Shader::TextureType::Texture2D: {
UNIMPLEMENTED_IF_MSG(is_array, "Unhandled 2d array texture");
const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
const std::string y = regs.GetRegisterAsInteger(instr.gpr20);
// shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
extra_op_offset = 1;
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled texture type {}", static_cast<u32>(texture_type));
}
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, false);
const std::string texture = [&]() {
switch (instr.tlds.GetTextureProcessMode()) {
case Tegra::Shader::TextureProcessMode::LZ:
return "texelFetch(" + sampler + ", coords, 0)";
case Tegra::Shader::TextureProcessMode::LL:
shader.AddLine(
"float lod = " +
regs.GetRegisterAsInteger(instr.gpr20.Value() + extra_op_offset) + ';');
return "texelFetch(" + sampler + ", coords, lod)";
default:
UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
static_cast<u32>(instr.tlds.GetTextureProcessMode()));
return "texelFetch(" + sampler + ", coords, 0)";
}
}();
WriteTexsInstructionFloat(instr, texture);
shader.AddLine(coord);
shader.AddLine("vec4 texture_tmp = " + texture + ';');
WriteTexsInstructionFloat(instr, "texture_tmp");
break;
}
case OpCode::Id::TLD4: {
ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D);
ASSERT(instr.tld4.array == 0);
UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
@ -2892,57 +2944,30 @@ private:
"NDV is not implemented");
UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::PTP),
"PTP is not implemented");
auto texture_type = instr.tld4.texture_type.Value();
const bool depth_compare =
instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
auto texture_type = instr.tld4.texture_type.Value();
u32 num_coordinates = TextureCoordinates(texture_type);
if (depth_compare)
num_coordinates += 1;
const bool is_array = instr.tld4.array != 0;
const auto [coord, texture] =
GetTLD4Code(instr, texture_type, depth_compare, is_array);
const auto scope = shader.Scope();
switch (num_coordinates) {
case 2: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
break;
}
case 3: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr8.Value() + 2);
shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled coordinates number {}",
static_cast<u32>(num_coordinates));
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
texture_type = Tegra::Shader::TextureType::Texture2D;
}
const std::string sampler =
GetSampler(instr.sampler, texture_type, false, depth_compare);
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4.component) + ')';
if (depth_compare) {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} else {
shader.AddLine(coord);
std::size_t dest_elem{};
shader.AddLine("vec4 texture_tmp = " + texture + ';');
for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components
continue;
}
regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
regs.SetRegisterToFloat(instr.gpr0, elem, "texture_tmp", 1, 4, false,
dest_elem);
++dest_elem;
}
}
break;
}
case OpCode::Id::TLD4S: {
@ -2955,28 +2980,31 @@ private:
const auto scope = shader.Scope();
std::string coords;
const bool depth_compare =
instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
// TODO(Subv): Figure out how the sampler type is encoded in the TLD4S instruction.
const std::string sampler = GetSampler(
instr.sampler, Tegra::Shader::TextureType::Texture2D, false, depth_compare);
if (depth_compare) {
// Note: TLD4S coordinate encoding works just like TEXS's
const std::string op_y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
shader.AddLine("vec3 coords = vec3(" + op_a + ", " + op_y + ", " + op_b + ");");
const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
coords = "vec2 coords = vec2(" + op_a + ", ";
std::string texture = "textureGather(" + sampler + ", coords, ";
if (!depth_compare) {
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
coords += op_b + ");";
texture += std::to_string(instr.tld4s.component) + ')';
} else {
shader.AddLine("vec2 coords = vec2(" + op_a + ", " + op_b + ");");
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string op_c = regs.GetRegisterAsFloat(instr.gpr20);
coords += op_b + ");";
texture += op_c + ')';
}
std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4s.component) + ')';
if (depth_compare) {
texture = "vec4(" + texture + ')';
}
WriteTexsInstructionFloat(instr, texture);
shader.AddLine(coords);
shader.AddLine("vec4 texture_tmp = " + texture + ';');
WriteTexsInstructionFloat(instr, "texture_tmp");
break;
}
case OpCode::Id::TXQ: {