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-rw-r--r--src/video_core/renderer_opengl/gl_shader_decompiler.cpp722
1 files changed, 352 insertions, 370 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index d235bfcd4..e7057a9cb 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -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:
@@ -1515,6 +1547,254 @@ private:
}
}
+ std::pair<size_t, std::string> ValidateAndGetCoordinateElement(
+ const Tegra::Shader::TextureType texture_type, const bool depth_compare,
+ const bool is_array, const bool lod_bias_enabled, size_t max_coords, size_t max_inputs) {
+ const size_t coord_count = TextureCoordinates(texture_type);
+
+ size_t total_coord_count = coord_count + (is_array ? 1 : 0) + (depth_compare ? 1 : 0);
+ const size_t total_reg_count = total_coord_count + (lod_bias_enabled ? 1 : 0);
+ if (total_coord_count > max_coords || total_reg_count > max_inputs) {
+ UNIMPLEMENTED_MSG("Unsupported Texture operation");
+ total_coord_count = std::min(total_coord_count, max_coords);
+ }
+ // 1D.DC opengl is using a vec3 but 2nd component is ignored later.
+ total_coord_count +=
+ (depth_compare && !is_array && texture_type == Tegra::Shader::TextureType::Texture1D)
+ ? 1
+ : 0;
+
+ constexpr std::array<const char*, 5> coord_container{
+ {"", "float coord = (", "vec2 coord = vec2(", "vec3 coord = vec3(",
+ "vec4 coord = vec4("}};
+
+ return std::pair<size_t, std::string>(coord_count, coord_container[total_coord_count]);
+ }
+
+ std::string GetTextureCode(const Tegra::Shader::Instruction& instr,
+ const Tegra::Shader::TextureType texture_type,
+ const Tegra::Shader::TextureProcessMode process_mode,
+ const bool depth_compare, const bool is_array,
+ const size_t bias_offset) {
+
+ if ((texture_type == Tegra::Shader::TextureType::Texture3D &&
+ (is_array || depth_compare)) ||
+ (texture_type == Tegra::Shader::TextureType::TextureCube && is_array &&
+ depth_compare)) {
+ UNIMPLEMENTED_MSG("This method is not supported.");
+ }
+
+ const std::string sampler =
+ GetSampler(instr.sampler, texture_type, is_array, depth_compare);
+
+ const bool lod_needed = process_mode == Tegra::Shader::TextureProcessMode::LZ ||
+ process_mode == Tegra::Shader::TextureProcessMode::LL ||
+ process_mode == Tegra::Shader::TextureProcessMode::LLA;
+
+ const bool gl_lod_supported = !(
+ (texture_type == Tegra::Shader::TextureType::Texture2D && is_array && depth_compare) ||
+ (texture_type == Tegra::Shader::TextureType::TextureCube && !is_array &&
+ depth_compare));
+
+ const std::string read_method = lod_needed && gl_lod_supported ? "textureLod(" : "texture(";
+ std::string texture = read_method + sampler + ", coord";
+
+ if (process_mode != Tegra::Shader::TextureProcessMode::None) {
+ if (process_mode == Tegra::Shader::TextureProcessMode::LZ) {
+ if (gl_lod_supported) {
+ texture += ", 0";
+ } else {
+ // Lod 0 is emulated by a big negative bias
+ // in scenarios that are not supported by glsl
+ texture += ", -1000";
+ }
+ } else {
+ // If present, lod or bias are always stored in the register indexed by the
+ // gpr20
+ // field with an offset depending on the usage of the other registers
+ texture += ',' + regs.GetRegisterAsFloat(instr.gpr20.Value() + bias_offset);
+ }
+ }
+ texture += ")";
+ return texture;
+ }
+
+ std::pair<std::string, std::string> GetTEXCode(
+ const Instruction& instr, const Tegra::Shader::TextureType texture_type,
+ const Tegra::Shader::TextureProcessMode process_mode, const bool depth_compare,
+ const bool is_array) {
+ const bool lod_bias_enabled = (process_mode != Tegra::Shader::TextureProcessMode::None &&
+ process_mode != Tegra::Shader::TextureProcessMode::LZ);
+
+ const auto [coord_count, coord_dcl] = ValidateAndGetCoordinateElement(
+ texture_type, depth_compare, is_array, lod_bias_enabled, 4, 5);
+ // 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_dcl;
+ for (size_t i = 0; i < coord_count;) {
+ coord += regs.GetRegisterAsFloat(coord_register + i);
+ ++i;
+ if (i != coord_count) {
+ coord += ',';
+ }
+ }
+ // 1D.DC in opengl the 2nd component is ignored.
+ if (depth_compare && !is_array && texture_type == Tegra::Shader::TextureType::Texture1D) {
+ coord += ",0.0";
+ }
+ if (depth_compare) {
+ // Depth is always stored in the register signaled by gpr20
+ // or in the next register if lod or bias are used
+ const u64 depth_register = instr.gpr20.Value() + (lod_bias_enabled ? 1 : 0);
+ coord += ',' + regs.GetRegisterAsFloat(depth_register);
+ }
+ if (is_array) {
+ coord += ',' + regs.GetRegisterAsInteger(array_register);
+ }
+ coord += ");";
+ return std::make_pair(
+ coord, GetTextureCode(instr, texture_type, process_mode, depth_compare, is_array, 0));
+ }
+
+ std::pair<std::string, std::string> GetTEXSCode(
+ const Instruction& instr, const Tegra::Shader::TextureType texture_type,
+ const Tegra::Shader::TextureProcessMode process_mode, const bool depth_compare,
+ const bool is_array) {
+ const bool lod_bias_enabled = (process_mode != Tegra::Shader::TextureProcessMode::None &&
+ process_mode != Tegra::Shader::TextureProcessMode::LZ);
+
+ const auto [coord_count, coord_dcl] = ValidateAndGetCoordinateElement(
+ texture_type, depth_compare, is_array, lod_bias_enabled, 4, 4);
+ // If enabled arrays index is always stored in the gpr8 field
+ const u64 array_register = instr.gpr8.Value();
+ // First coordinate index is stored in gpr8 field or (gpr8 + 1) when arrays are used
+ const u64 coord_register = array_register + (is_array ? 1 : 0);
+ const u64 last_coord_register =
+ (is_array || !(lod_bias_enabled || depth_compare) || (coord_count > 2))
+ ? static_cast<u64>(instr.gpr20.Value())
+ : coord_register + 1;
+
+ std::string coord = coord_dcl;
+ 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 (i < coord_count - 1) {
+ coord += ',';
+ }
+ }
+
+ if (depth_compare) {
+ // Depth is always stored in the register signaled by gpr20
+ // or in the next register if lod or bias are used
+ const u64 depth_register = instr.gpr20.Value() + (lod_bias_enabled ? 1 : 0);
+ coord += ',' + regs.GetRegisterAsFloat(depth_register);
+ }
+ if (is_array) {
+ coord += ',' + regs.GetRegisterAsInteger(array_register);
+ }
+ coord += ");";
+
+ return std::make_pair(coord,
+ GetTextureCode(instr, texture_type, process_mode, depth_compare,
+ 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.
@@ -2574,168 +2854,32 @@ private:
case OpCode::Id::TEX: {
Tegra::Shader::TextureType texture_type{instr.tex.texture_type};
const bool is_array = instr.tex.array != 0;
-
+ const bool depth_compare =
+ instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
+ const auto process_mode = instr.tex.GetTextureProcessMode();
UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
"AOFFI is not implemented");
- const bool depth_compare =
- instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
- u32 num_coordinates = TextureCoordinates(texture_type);
- u32 start_index = 0;
- std::string array_elem;
- if (is_array) {
- array_elem = regs.GetRegisterAsInteger(instr.gpr8);
- start_index = 1;
- }
- const auto process_mode = instr.tex.GetTextureProcessMode();
- u32 start_index_b = 0;
- std::string lod_value;
- if (process_mode != Tegra::Shader::TextureProcessMode::LZ &&
- process_mode != Tegra::Shader::TextureProcessMode::None) {
- start_index_b = 1;
- lod_value = regs.GetRegisterAsFloat(instr.gpr20);
- }
-
- std::string depth_value;
- if (depth_compare) {
- depth_value = regs.GetRegisterAsFloat(instr.gpr20.Value() + start_index_b);
- }
-
- bool depth_compare_extra = false;
+ const auto [coord, texture] =
+ GetTEXCode(instr, texture_type, process_mode, depth_compare, is_array);
const auto scope = shader.Scope();
-
- switch (num_coordinates) {
- case 1: {
- const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index);
- if (is_array) {
- if (depth_compare) {
- shader.AddLine("vec3 coords = vec3(" + x + ", " + depth_value + ", " +
- array_elem + ");");
- } else {
- shader.AddLine("vec2 coords = vec2(" + x + ", " + array_elem + ");");
- }
- } else {
- if (depth_compare) {
- shader.AddLine("vec2 coords = vec2(" + x + ", " + depth_value + ");");
- } else {
- shader.AddLine("float coords = " + x + ';');
- }
- }
- break;
- }
- case 2: {
- const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index);
- const std::string y =
- regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 1);
- if (is_array) {
- if (depth_compare) {
- shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " +
- depth_value + ", " + array_elem + ");");
- } else {
- shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
- array_elem + ");");
- }
- } else {
- if (depth_compare) {
- shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
- depth_value + ");");
- } else {
- shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
- }
- }
- break;
- }
- case 3: {
- const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index);
- const std::string y =
- regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 1);
- const std::string z =
- regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 2);
- if (is_array) {
- depth_compare_extra = depth_compare;
- shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
- array_elem + ");");
- } else {
- if (depth_compare) {
- shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
- depth_value + ");");
- } else {
- shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
- }
- }
- break;
- }
- default:
- UNIMPLEMENTED_MSG("Unhandled coordinates number {}",
- static_cast<u32>(num_coordinates));
-
- // Fallback to interpreting as a 2D texture for now
- 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, is_array, depth_compare);
- // Add an extra scope and declare the texture coords inside to prevent
- // overwriting them in case they are used as outputs of the texs instruction.
-
- const std::string texture = [&]() {
- switch (instr.tex.GetTextureProcessMode()) {
- case Tegra::Shader::TextureProcessMode::None:
- if (depth_compare_extra) {
- return "texture(" + sampler + ", coords, " + depth_value + ')';
- }
- return "texture(" + sampler + ", coords)";
- case Tegra::Shader::TextureProcessMode::LZ:
- if (depth_compare_extra) {
- return "texture(" + sampler + ", coords, " + depth_value + ')';
- }
- return "textureLod(" + sampler + ", coords, 0.0)";
- case Tegra::Shader::TextureProcessMode::LB:
- case Tegra::Shader::TextureProcessMode::LBA:
- // TODO: Figure if A suffix changes the equation at all.
- if (depth_compare_extra) {
- LOG_WARNING(
- HW_GPU,
- "OpenGL Limitation: can't set bias value along depth compare");
- return "texture(" + sampler + ", coords, " + depth_value + ')';
- }
- return "texture(" + sampler + ", coords, " + lod_value + ')';
- case Tegra::Shader::TextureProcessMode::LL:
- case Tegra::Shader::TextureProcessMode::LLA:
- // TODO: Figure if A suffix changes the equation at all.
- if (depth_compare_extra) {
- LOG_WARNING(
- HW_GPU,
- "OpenGL Limitation: can't set lod value along depth compare");
- return "texture(" + sampler + ", coords, " + depth_value + ')';
- }
- return "textureLod(" + sampler + ", coords, " + lod_value + ')';
- default:
- UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
- static_cast<u32>(instr.tex.GetTextureProcessMode()));
- if (depth_compare_extra) {
- return "texture(" + sampler + ", coords, " + depth_value + ')';
- }
- return "texture(" + sampler + ", coords)";
- }
- }();
+ shader.AddLine(coord);
if (depth_compare) {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} else {
+ shader.AddLine("vec4 texture_tmp = " + texture + ';');
std::size_t dest_elem{};
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;
}
}
@@ -2743,138 +2887,37 @@ private:
}
case OpCode::Id::TEXS: {
Tegra::Shader::TextureType texture_type{instr.texs.GetTextureType()};
- bool is_array{instr.texs.IsArrayTexture()};
+ const bool is_array{instr.texs.IsArrayTexture()};
+ const bool depth_compare =
+ instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
+ const auto process_mode = instr.texs.GetTextureProcessMode();
UNIMPLEMENTED_IF_MSG(instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
const auto scope = shader.Scope();
- const bool depth_compare =
- instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
- u32 num_coordinates = TextureCoordinates(texture_type);
- const auto process_mode = instr.texs.GetTextureProcessMode();
- u32 lod_offset = 0;
- if (process_mode == Tegra::Shader::TextureProcessMode::LL) {
- if (num_coordinates > 2) {
- shader.AddLine("float lod_value = " +
- regs.GetRegisterAsFloat(instr.gpr20.Value() + 1) + ';');
- lod_offset = 2;
- } else {
- shader.AddLine("float lod_value = " + regs.GetRegisterAsFloat(instr.gpr20) +
- ';');
- lod_offset = 1;
- }
- }
+ auto [coord, texture] =
+ GetTEXSCode(instr, texture_type, process_mode, depth_compare, is_array);
- switch (num_coordinates) {
- case 1: {
- shader.AddLine("float coords = " + regs.GetRegisterAsFloat(instr.gpr8) + ';');
- break;
- }
- case 2: {
- if (is_array) {
- if (depth_compare) {
- const std::string index = regs.GetRegisterAsInteger(instr.gpr8);
- const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
- const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
- const std::string z = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
- shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
- index + ");");
- } else {
- const std::string index = regs.GetRegisterAsInteger(instr.gpr8);
- const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
- const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
- shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + index +
- ");");
- }
- } else {
- if (lod_offset != 0) {
- if (depth_compare) {
- 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.gpr20.Value() + lod_offset);
- shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z +
- ");");
- } else {
- 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 + ");");
- }
- } else {
- if (depth_compare) {
- 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.gpr20);
- shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z +
- ");");
- } else {
- const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
- const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
- 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.gpr20);
- shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
- break;
- }
- default:
- UNIMPLEMENTED_MSG("Unhandled coordinates number {}",
- static_cast<u32>(num_coordinates));
+ shader.AddLine(coord);
- // Fallback to interpreting as a 2D texture for now
- const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
- const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
- shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
- texture_type = Tegra::Shader::TextureType::Texture2D;
- is_array = false;
- }
- const std::string sampler =
- GetSampler(instr.sampler, texture_type, is_array, depth_compare);
-
- std::string texture = [&]() {
- switch (process_mode) {
- case Tegra::Shader::TextureProcessMode::None:
- return "texture(" + sampler + ", coords)";
- case Tegra::Shader::TextureProcessMode::LZ:
- if (depth_compare && is_array) {
- return "texture(" + sampler + ", coords)";
- } else {
- return "textureLod(" + sampler + ", coords, 0.0)";
- }
- break;
- case Tegra::Shader::TextureProcessMode::LL:
- return "textureLod(" + sampler + ", coords, lod_value)";
- default:
- UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
- static_cast<u32>(instr.texs.GetTextureProcessMode()));
- return "texture(" + sampler + ", coords)";
- }
- }();
if (depth_compare) {
texture = "vec4(" + texture + ')';
}
+ shader.AddLine("vec4 texture_tmp = " + texture + ';');
- WriteTexsInstruction(instr, texture);
+ if (instr.texs.fp32_flag) {
+ WriteTexsInstructionFloat(instr, "texture_tmp");
+ } else {
+ WriteTexsInstructionHalfFloat(instr, "texture_tmp");
+ }
break;
}
case OpCode::Id::TLDS: {
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),
@@ -2882,54 +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();
-
- 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)";
- }
- }();
+ const auto scope = shader.Scope();
- WriteTexsInstruction(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");
@@ -2939,56 +2944,29 @@ 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 auto scope = shader.Scope();
+ const bool is_array = instr.tld4.array != 0;
- 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 auto [coord, texture] =
+ GetTLD4Code(instr, texture_type, depth_compare, is_array);
- const std::string sampler =
- GetSampler(instr.sampler, texture_type, false, depth_compare);
+ const auto scope = shader.Scope();
- const std::string texture = "textureGather(" + sampler + ", coords, " +
- std::to_string(instr.tld4.component) + ')';
+ shader.AddLine(coord);
+ std::size_t dest_elem{};
- if (depth_compare) {
- regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
- } else {
- std::size_t dest_elem{};
- 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);
- ++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_tmp", 1, 4, false,
+ dest_elem);
+ ++dest_elem;
}
break;
}
@@ -3002,27 +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 + ");");
- } else {
- shader.AddLine("vec2 coords = vec2(" + op_a + ", " + op_b + ");");
- }
- std::string texture = "textureGather(" + sampler + ", coords, " +
- std::to_string(instr.tld4s.component) + ')';
- if (depth_compare) {
- texture = "vec4(" + texture + ')';
+ 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 {
+ 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 + ')';
}
- WriteTexsInstruction(instr, texture);
+ shader.AddLine(coords);
+ shader.AddLine("vec4 texture_tmp = " + texture + ';');
+ WriteTexsInstructionFloat(instr, "texture_tmp");
break;
}
case OpCode::Id::TXQ: {
@@ -3934,4 +3916,4 @@ std::optional<ProgramResult> DecompileProgram(const ProgramCode& program_code, u
return {};
}
-} // namespace OpenGL::GLShader::Decompiler
+} // namespace OpenGL::GLShader::Decompiler \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-07 16:04:17 +0200