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Merge pull request #1112 from Subv/sampler_types

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Shaders: Use the correct shader type when sampling textures.
This commit is contained in:
bunnei 2018-08-20 14:30:45 -04:00 committed by GitHub
commit b20ed93884
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 250 additions and 33 deletions
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76
src/video_core/engines/shader_bytecode.h
View file

@ -223,6 +223,13 @@ enum class PredicateResultMode : u64 {
NotZero = 0x3,
};
enum class TextureType : u64 {
Texture1D = 0,
Texture2D = 1,
Texture3D = 2,
TextureCube = 3,
};
union Instruction {
Instruction& operator=(const Instruction& instr) {
value = instr.value;
@ -434,6 +441,8 @@ union Instruction {
} conversion;
union {
BitField<28, 1, u64> array;
BitField<29, 2, TextureType> texture_type;
BitField<31, 4, u64> component_mask;
bool IsComponentEnabled(size_t component) const {
@ -442,9 +451,39 @@ union Instruction {
} tex;
union {
BitField<50, 3, u64> component_mask_selector;
BitField<28, 1, u64> array;
BitField<29, 2, TextureType> texture_type;
BitField<56, 2, u64> component;
} tld4;
union {
BitField<52, 2, u64> component;
} tld4s;
union {
BitField<0, 8, Register> gpr0;
BitField<28, 8, Register> gpr28;
BitField<50, 3, u64> component_mask_selector;
BitField<53, 4, u64> texture_info;
TextureType GetTextureType() const {
// The TEXS instruction has a weird encoding for the texture type.
if (texture_info == 0)
return TextureType::Texture1D;
if (texture_info >= 1 && texture_info <= 9)
return TextureType::Texture2D;
if (texture_info >= 10 && texture_info <= 11)
return TextureType::Texture3D;
if (texture_info >= 12 && texture_info <= 13)
return TextureType::TextureCube;
UNIMPLEMENTED();
}
bool IsArrayTexture() const {
// TEXS only supports Texture2D arrays.
return texture_info >= 7 && texture_info <= 9;
}
bool HasTwoDestinations() const {
return gpr28.Value() != Register::ZeroIndex;
@ -468,6 +507,31 @@ union Instruction {
}
} texs;
union {
BitField<53, 4, u64> texture_info;
TextureType GetTextureType() const {
// The TLDS instruction has a weird encoding for the texture type.
if (texture_info >= 0 && texture_info <= 1) {
return TextureType::Texture1D;
}
if (texture_info == 2 || texture_info == 8 || texture_info == 12 ||
texture_info >= 4 && texture_info <= 6) {
return TextureType::Texture2D;
}
if (texture_info == 7) {
return TextureType::Texture3D;
}
UNIMPLEMENTED();
}
bool IsArrayTexture() const {
// TEXS only supports Texture2D arrays.
return texture_info == 8;
}
} tlds;
union {
BitField<20, 24, u64> target;
BitField<5, 1, u64> constant_buffer;
@ -533,9 +597,11 @@ public:
LDG, // Load from global memory
STG, // Store in global memory
TEX,
TEXQ, // Texture Query
TEXS, // Texture Fetch with scalar/non-vec4 source/destinations
TLDS, // Texture Load with scalar/non-vec4 source/destinations
TEXQ, // Texture Query
TEXS, // Texture Fetch with scalar/non-vec4 source/destinations
TLDS, // Texture Load with scalar/non-vec4 source/destinations
TLD4, // Texture Load 4
TLD4S, // Texture Load 4 with scalar / non - vec4 source / destinations
EXIT,
IPA,
FFMA_IMM, // Fused Multiply and Add
@ -749,6 +815,8 @@ private:
INST("1101111101001---", Id::TEXQ, Type::Memory, "TEXQ"),
INST("1101100---------", 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"),
INST("111000110000----", Id::EXIT, Type::Trivial, "EXIT"),
INST("11100000--------", Id::IPA, Type::Trivial, "IPA"),
INST("0011001-1-------", Id::FFMA_IMM, Type::Ffma, "FFMA_IMM"),

157
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -439,13 +439,12 @@ public:
}
declarations.AddNewLine();
// Append the sampler2D array for the used textures.
size_t num_samplers = GetSamplers().size();
if (num_samplers > 0) {
declarations.AddLine("uniform sampler2D " + SamplerEntry::GetArrayName(stage) + '[' +
std::to_string(num_samplers) + "];");
declarations.AddNewLine();
const auto& samplers = GetSamplers();
for (const auto& sampler : samplers) {
declarations.AddLine("uniform " + sampler.GetTypeString() + ' ' + sampler.GetName() +
';');
}
declarations.AddNewLine();
}
/// Returns a list of constant buffer declarations
@ -457,13 +456,14 @@ public:
}
/// Returns a list of samplers used in the shader
std::vector<SamplerEntry> GetSamplers() const {
const std::vector<SamplerEntry>& GetSamplers() const {
return used_samplers;
}
/// Returns the GLSL sampler used for the input shader sampler, and creates a new one if
/// necessary.
std::string AccessSampler(const Sampler& sampler) {
std::string AccessSampler(const Sampler& sampler, Tegra::Shader::TextureType type,
bool is_array) {
size_t offset = static_cast<size_t>(sampler.index.Value());
// If this sampler has already been used, return the existing mapping.
@ -472,12 +472,13 @@ public:
[&](const SamplerEntry& entry) { return entry.GetOffset() == offset; });
if (itr != used_samplers.end()) {
ASSERT(itr->GetType() == type && itr->IsArray() == is_array);
return itr->GetName();
}
// Otherwise create a new mapping for this sampler
size_t next_index = used_samplers.size();
SamplerEntry entry{stage, offset, next_index};
SamplerEntry entry{stage, offset, next_index, type, is_array};
used_samplers.emplace_back(entry);
return entry.GetName();
}
@ -638,8 +639,8 @@ private:
}
/// Generates code representing a texture sampler.
std::string GetSampler(const Sampler& sampler) {
return regs.AccessSampler(sampler);
std::string GetSampler(const Sampler& sampler, Tegra::Shader::TextureType type, bool is_array) {
return regs.AccessSampler(sampler, type, is_array);
}
/**
@ -1507,10 +1508,29 @@ private:
break;
}
case OpCode::Id::TEX: {
const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string sampler = GetSampler(instr.sampler);
const std::string coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
ASSERT_MSG(instr.tex.array == 0, "TEX arrays unimplemented");
std::string coord{};
switch (instr.tex.texture_type) {
case Tegra::Shader::TextureType::Texture2D: {
std::string x = regs.GetRegisterAsFloat(instr.gpr8);
std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
break;
}
case Tegra::Shader::TextureType::Texture3D: {
std::string x = regs.GetRegisterAsFloat(instr.gpr8);
std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
std::string z = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
break;
}
default:
UNIMPLEMENTED();
}
const std::string sampler =
GetSampler(instr.sampler, instr.tex.texture_type, instr.tex.array);
// 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.
shader.AddLine("{");
@ -1532,24 +1552,115 @@ private:
break;
}
case OpCode::Id::TEXS: {
const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
const std::string sampler = GetSampler(instr.sampler);
const std::string coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
std::string coord{};
switch (instr.texs.GetTextureType()) {
case Tegra::Shader::TextureType::Texture2D: {
if (instr.texs.IsArrayTexture()) {
std::string index = regs.GetRegisterAsInteger(instr.gpr8);
std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + index + ");";
} else {
std::string x = regs.GetRegisterAsFloat(instr.gpr8);
std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
}
break;
}
case Tegra::Shader::TextureType::TextureCube: {
std::string x = regs.GetRegisterAsFloat(instr.gpr8);
std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
std::string z = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
break;
}
default:
UNIMPLEMENTED();
}
const std::string sampler = GetSampler(instr.sampler, instr.texs.GetTextureType(),
instr.texs.IsArrayTexture());
const std::string texture = "texture(" + sampler + ", coords)";
WriteTexsInstruction(instr, coord, texture);
break;
}
case OpCode::Id::TLDS: {
const std::string op_a = regs.GetRegisterAsInteger(instr.gpr8);
const std::string op_b = regs.GetRegisterAsInteger(instr.gpr20);
const std::string sampler = GetSampler(instr.sampler);
const std::string coord = "ivec2 coords = ivec2(" + op_a + ", " + op_b + ");";
ASSERT(instr.tlds.GetTextureType() == Tegra::Shader::TextureType::Texture2D);
ASSERT(instr.tlds.IsArrayTexture() == false);
std::string coord{};
switch (instr.tlds.GetTextureType()) {
case Tegra::Shader::TextureType::Texture2D: {
if (instr.tlds.IsArrayTexture()) {
UNIMPLEMENTED();
} else {
std::string x = regs.GetRegisterAsInteger(instr.gpr8);
std::string y = regs.GetRegisterAsInteger(instr.gpr20);
coord = "ivec2 coords = ivec2(" + x + ", " + y + ");";
}
break;
}
default:
UNIMPLEMENTED();
}
const std::string sampler = GetSampler(instr.sampler, instr.tlds.GetTextureType(),
instr.tlds.IsArrayTexture());
const std::string texture = "texelFetch(" + sampler + ", coords, 0)";
WriteTexsInstruction(instr, coord, texture);
break;
}
case OpCode::Id::TLD4: {
ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D);
ASSERT(instr.tld4.array == 0);
std::string coord{};
switch (instr.tld4.texture_type) {
case Tegra::Shader::TextureType::Texture2D: {
std::string x = regs.GetRegisterAsFloat(instr.gpr8);
std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
break;
}
default:
UNIMPLEMENTED();
}
const std::string sampler =
GetSampler(instr.sampler, instr.tld4.texture_type, instr.tld4.array);
// 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.
shader.AddLine("{");
++shader.scope;
shader.AddLine(coord);
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4.component) + ')';
size_t dest_elem{};
for (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.scope;
shader.AddLine("}");
break;
}
case OpCode::Id::TLD4S: {
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);
const std::string coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4s.component) + ')';
WriteTexsInstruction(instr, coord, texture);
break;
}
default: {
LOG_CRITICAL(HW_GPU, "Unhandled memory instruction: {}", opcode->GetName());
UNREACHABLE();

50
src/video_core/renderer_opengl/gl_shader_gen.h
View file

@ -11,6 +11,7 @@
#include <vector>
#include "common/common_types.h"
#include "common/hash.h"
#include "video_core/engines/shader_bytecode.h"
namespace GLShader {
@ -72,8 +73,9 @@ class SamplerEntry {
using Maxwell = Tegra::Engines::Maxwell3D::Regs;
public:
SamplerEntry(Maxwell::ShaderStage stage, size_t offset, size_t index)
: offset(offset), stage(stage), sampler_index(index) {}
SamplerEntry(Maxwell::ShaderStage stage, size_t offset, size_t index,
Tegra::Shader::TextureType type, bool is_array)
: offset(offset), stage(stage), sampler_index(index), type(type), is_array(is_array) {}
size_t GetOffset() const {
return offset;
@ -88,8 +90,41 @@ public:
}
std::string GetName() const {
return std::string(TextureSamplerNames[static_cast<size_t>(stage)]) + '[' +
std::to_string(sampler_index) + ']';
return std::string(TextureSamplerNames[static_cast<size_t>(stage)]) + '_' +
std::to_string(sampler_index);
}
std::string GetTypeString() const {
using Tegra::Shader::TextureType;
std::string glsl_type;
switch (type) {
case TextureType::Texture1D:
glsl_type = "sampler1D";
break;
case TextureType::Texture2D:
glsl_type = "sampler2D";
break;
case TextureType::Texture3D:
glsl_type = "sampler3D";
break;
case TextureType::TextureCube:
glsl_type = "samplerCube";
break;
default:
UNIMPLEMENTED();
}
if (is_array)
glsl_type += "Array";
return glsl_type;
}
Tegra::Shader::TextureType GetType() const {
return type;
}
bool IsArray() const {
return is_array;
}
static std::string GetArrayName(Maxwell::ShaderStage stage) {
@ -100,11 +135,14 @@ private:
static constexpr std::array<const char*, Maxwell::MaxShaderStage> TextureSamplerNames = {
"tex_vs", "tex_tessc", "tex_tesse", "tex_gs", "tex_fs",
};
/// Offset in TSC memory from which to read the sampler object, as specified by the sampling
/// instruction.
size_t offset;
Maxwell::ShaderStage stage; ///< Shader stage where this sampler was used.
size_t sampler_index; ///< Value used to index into the generated GLSL sampler array.
Maxwell::ShaderStage stage; ///< Shader stage where this sampler was used.
size_t sampler_index; ///< Value used to index into the generated GLSL sampler array.
Tegra::Shader::TextureType type; ///< The type used to sample this texture (Texture2D, etc)
bool is_array; ///< Whether the texture is being sampled as an array texture or not.
};
struct ShaderEntries {