gl_shader_decompiler: TLDS/TLD4/TLD4S Reworked reflecting the source registers, bugs fixed and modularize.
This commit is contained in:
Marcos Vitali
parent
f761e3ef86
commit
f4fa7ecb0e
1 changed files with 134 additions and 106 deletions
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@ -1681,7 +1681,7 @@ private:
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for (size_t i = 0; i < coord_count; ++i) {
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const bool last = (i == (coord_count - 1)) && (coord_count > 1);
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coord += regs.GetRegisterAsFloat(last ? last_coord_register : coord_register + i);
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if (!last) {
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if (i < coord_count - 1) {
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coord += ',';
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}
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}
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@ -1702,6 +1702,99 @@ private:
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is_array, (coord_count > 2 ? 1 : 0)));
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}
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std::pair<std::string, std::string> GetTLD4Code(const Instruction& instr,
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const Tegra::Shader::TextureType texture_type,
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const bool depth_compare, const bool is_array) {
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const size_t coord_count = TextureCoordinates(texture_type);
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const size_t total_coord_count = coord_count + (is_array ? 1 : 0);
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const size_t total_reg_count = total_coord_count + (depth_compare ? 1 : 0);
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constexpr std::array<const char*, 5> coord_container{
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{"", "", "vec2 coord = vec2(", "vec3 coord = vec3(", "vec4 coord = vec4("}};
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// If enabled arrays index is always stored in the gpr8 field
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const u64 array_register = instr.gpr8.Value();
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// First coordinate index is the gpr8 or gpr8 + 1 when arrays are used
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const u64 coord_register = array_register + (is_array ? 1 : 0);
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std::string coord = coord_container[total_coord_count];
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for (size_t i = 0; i < coord_count;) {
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coord += regs.GetRegisterAsFloat(coord_register + i);
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++i;
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if (i != coord_count) {
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coord += ',';
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}
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}
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if (is_array) {
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coord += ',' + regs.GetRegisterAsInteger(array_register);
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}
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coord += ");";
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const std::string sampler =
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GetSampler(instr.sampler, texture_type, is_array, depth_compare);
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std::string texture = "textureGather(" + sampler + ", coord, ";
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if (depth_compare) {
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// Depth is always stored in the register signaled by gpr20
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texture += regs.GetRegisterAsFloat(instr.gpr20.Value()) + ')';
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} else {
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texture += std::to_string(instr.tld4.component) + ')';
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}
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return std::make_pair(coord, texture);
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}
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std::pair<std::string, std::string> GetTLDSCode(const Instruction& instr,
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const Tegra::Shader::TextureType texture_type,
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const bool is_array) {
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const size_t coord_count = TextureCoordinates(texture_type);
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const size_t total_coord_count = coord_count + (is_array ? 1 : 0);
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const bool lod_enabled =
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instr.tlds.GetTextureProcessMode() == Tegra::Shader::TextureProcessMode::LL;
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constexpr std::array<const char*, 4> coord_container{
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{"", "int coord = (", "ivec2 coord = ivec2(", "ivec3 coord = ivec3("}};
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std::string coord = coord_container[total_coord_count];
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// If enabled arrays index is always stored in the gpr8 field
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const u64 array_register = instr.gpr8.Value();
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// if is array gpr20 is used
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const u64 coord_register = is_array ? instr.gpr20.Value() : instr.gpr8.Value();
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const u64 last_coord_register =
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((coord_count > 2) || (coord_count == 2 && !lod_enabled)) && !is_array
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? static_cast<u64>(instr.gpr20.Value())
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: coord_register + 1;
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for (size_t i = 0; i < coord_count; ++i) {
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const bool last = (i == (coord_count - 1)) && (coord_count > 1);
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coord += regs.GetRegisterAsInteger(last ? last_coord_register : coord_register + i);
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if (i < coord_count - 1) {
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coord += ',';
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}
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}
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if (is_array) {
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coord += ',' + regs.GetRegisterAsInteger(array_register);
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}
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coord += ");";
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const std::string sampler = GetSampler(instr.sampler, texture_type, is_array, false);
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std::string texture = "texelFetch(" + sampler + ", coords";
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if (lod_enabled) {
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// When lod is used always is in grp20
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texture += ", " + regs.GetRegisterAsInteger(instr.gpr20) + ')';
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} else {
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texture += ", 0)";
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}
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return std::make_pair(coord, texture);
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}
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/**
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* Compiles a single instruction from Tegra to GLSL.
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* @param offset the offset of the Tegra shader instruction.
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@ -2825,9 +2918,6 @@ private:
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const Tegra::Shader::TextureType texture_type{instr.tlds.GetTextureType()};
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const bool is_array{instr.tlds.IsArrayTexture()};
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ASSERT(texture_type == Tegra::Shader::TextureType::Texture2D);
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ASSERT(is_array == false);
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UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
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"NODEP is not implemented");
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UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
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@ -2835,54 +2925,16 @@ private:
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UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(Tegra::Shader::TextureMiscMode::MZ),
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"MZ is not implemented");
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u32 extra_op_offset = 0;
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const auto [coord, texture] = GetTLDSCode(instr, texture_type, is_array);
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ShaderScopedScope scope = shader.Scope();
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const auto scope = shader.Scope();
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switch (texture_type) {
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case Tegra::Shader::TextureType::Texture1D: {
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const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
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shader.AddLine("float coords = " + x + ';');
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break;
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}
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case Tegra::Shader::TextureType::Texture2D: {
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UNIMPLEMENTED_IF_MSG(is_array, "Unhandled 2d array texture");
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const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
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const std::string y = regs.GetRegisterAsInteger(instr.gpr20);
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// shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
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shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
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extra_op_offset = 1;
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break;
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}
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default:
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UNIMPLEMENTED_MSG("Unhandled texture type {}", static_cast<u32>(texture_type));
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}
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const std::string sampler =
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GetSampler(instr.sampler, texture_type, is_array, false);
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const std::string texture = [&]() {
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switch (instr.tlds.GetTextureProcessMode()) {
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case Tegra::Shader::TextureProcessMode::LZ:
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return "texelFetch(" + sampler + ", coords, 0)";
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case Tegra::Shader::TextureProcessMode::LL:
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shader.AddLine(
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"float lod = " +
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regs.GetRegisterAsInteger(instr.gpr20.Value() + extra_op_offset) + ';');
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return "texelFetch(" + sampler + ", coords, lod)";
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default:
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UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
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static_cast<u32>(instr.tlds.GetTextureProcessMode()));
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return "texelFetch(" + sampler + ", coords, 0)";
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}
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}();
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WriteTexsInstructionFloat(instr, texture);
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shader.AddLine(coord);
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shader.AddLine("vec4 texture_tmp = " + texture + ';');
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WriteTexsInstructionFloat(instr, "texture_tmp");
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break;
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}
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case OpCode::Id::TLD4: {
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ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D);
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ASSERT(instr.tld4.array == 0);
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
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"NODEP is not implemented");
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@ -2892,56 +2944,29 @@ private:
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"NDV is not implemented");
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::PTP),
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"PTP is not implemented");
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auto texture_type = instr.tld4.texture_type.Value();
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const bool depth_compare =
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instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
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auto texture_type = instr.tld4.texture_type.Value();
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u32 num_coordinates = TextureCoordinates(texture_type);
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if (depth_compare)
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num_coordinates += 1;
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const bool is_array = instr.tld4.array != 0;
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const auto [coord, texture] =
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GetTLD4Code(instr, texture_type, depth_compare, is_array);
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const auto scope = shader.Scope();
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switch (num_coordinates) {
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case 2: {
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const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
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const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
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shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
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break;
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}
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case 3: {
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const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
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const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
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const std::string z = regs.GetRegisterAsFloat(instr.gpr8.Value() + 2);
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shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
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break;
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}
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default:
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UNIMPLEMENTED_MSG("Unhandled coordinates number {}",
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static_cast<u32>(num_coordinates));
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const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
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const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
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shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
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texture_type = Tegra::Shader::TextureType::Texture2D;
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}
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shader.AddLine(coord);
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std::size_t dest_elem{};
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const std::string sampler =
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GetSampler(instr.sampler, texture_type, false, depth_compare);
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const std::string texture = "textureGather(" + sampler + ", coords, " +
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std::to_string(instr.tld4.component) + ')';
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if (depth_compare) {
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regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
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} else {
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std::size_t dest_elem{};
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for (std::size_t elem = 0; elem < 4; ++elem) {
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if (!instr.tex.IsComponentEnabled(elem)) {
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// Skip disabled components
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continue;
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}
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regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
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++dest_elem;
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shader.AddLine("vec4 texture_tmp = " + texture + ';');
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for (std::size_t elem = 0; elem < 4; ++elem) {
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if (!instr.tex.IsComponentEnabled(elem)) {
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// Skip disabled components
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continue;
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}
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regs.SetRegisterToFloat(instr.gpr0, elem, "texture_tmp", 1, 4, false,
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dest_elem);
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++dest_elem;
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}
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break;
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}
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@ -2955,28 +2980,31 @@ private:
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const auto scope = shader.Scope();
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std::string coords;
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const bool depth_compare =
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instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
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const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
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const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
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// TODO(Subv): Figure out how the sampler type is encoded in the TLD4S instruction.
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const std::string sampler = GetSampler(
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instr.sampler, Tegra::Shader::TextureType::Texture2D, false, depth_compare);
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if (depth_compare) {
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// Note: TLD4S coordinate encoding works just like TEXS's
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const std::string op_y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
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shader.AddLine("vec3 coords = vec3(" + op_a + ", " + op_y + ", " + op_b + ");");
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const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
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coords = "vec2 coords = vec2(" + op_a + ", ";
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std::string texture = "textureGather(" + sampler + ", coords, ";
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if (!depth_compare) {
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const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
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coords += op_b + ");";
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texture += std::to_string(instr.tld4s.component) + ')';
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} else {
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shader.AddLine("vec2 coords = vec2(" + op_a + ", " + op_b + ");");
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const std::string op_b = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
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const std::string op_c = regs.GetRegisterAsFloat(instr.gpr20);
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coords += op_b + ");";
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texture += op_c + ')';
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}
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std::string texture = "textureGather(" + sampler + ", coords, " +
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std::to_string(instr.tld4s.component) + ')';
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if (depth_compare) {
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texture = "vec4(" + texture + ')';
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}
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WriteTexsInstructionFloat(instr, texture);
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shader.AddLine(coords);
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shader.AddLine("vec4 texture_tmp = " + texture + ';');
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WriteTexsInstructionFloat(instr, "texture_tmp");
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break;
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}
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case OpCode::Id::TXQ: {
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