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Shader_IR: Implement TXD instruction.

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This commit is contained in:
Fernando Sahmkow 2019-11-12 13:43:08 -04:00 committed by FernandoS27
parent f3d1b370aa
commit cd0f5dfc17
5 changed files with 120 additions and 8 deletions
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20
src/video_core/engines/shader_bytecode.h
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@ -1445,6 +1445,26 @@ union Instruction {
}
} tlds;
union {
BitField<28, 1, u64> is_array;
BitField<29, 2, TextureType> texture_type;
BitField<35, 1, u64> aoffi_flag;
BitField<49, 1, u64> nodep_flag;
bool UsesMiscMode(TextureMiscMode mode) const {
switch (mode) {
case TextureMiscMode::AOFFI:
return aoffi_flag != 0;
case TextureMiscMode::NODEP:
return nodep_flag != 0;
default:
break;
}
return false;
}
} txd;
union {
BitField<24, 2, StoreCacheManagement> cache_management;
BitField<33, 3, ImageType> image_type;

44
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -44,8 +44,9 @@ using Operation = const OperationNode&;
enum class Type { Void, Bool, Bool2, Float, Int, Uint, HalfFloat };
struct TextureAoffi {};
struct TextureDerivates {};
using TextureArgument = std::pair<Type, Node>;
using TextureIR = std::variant<TextureAoffi, TextureArgument>;
using TextureIR = std::variant<TextureAoffi, TextureDerivates, TextureArgument>;
constexpr u32 MAX_CONSTBUFFER_ELEMENTS =
static_cast<u32>(Maxwell::MaxConstBufferSize) / (4 * sizeof(float));
@ -1129,6 +1130,8 @@ private:
expr += GenerateTextureArgument(*argument);
} else if (std::holds_alternative<TextureAoffi>(variant)) {
expr += GenerateTextureAoffi(meta->aoffi);
} else if (std::holds_alternative<TextureDerivates>(variant)) {
expr += GenerateTextureDerivates(meta->derivates);
} else {
UNREACHABLE();
}
@ -1198,6 +1201,36 @@ private:
return expr;
}
std::string GenerateTextureDerivates(const std::vector<Node>& derivates) {
if (derivates.empty()) {
return {};
}
constexpr std::array coord_constructors = {"float", "vec2", "vec3"};
std::string expr = ", ";
const std::size_t components = derivates.size() / 2;
std::string dx = coord_constructors.at(components - 1);
std::string dy = coord_constructors.at(components - 1);
dx += '(';
dy += '(';
for (std::size_t index = 0; index < components; ++index) {
const auto operand_x{derivates.at(index * 2)};
const auto operand_y{derivates.at(index * 2 + 1)};
dx += Visit(operand_x).AsFloat();
dy += Visit(operand_y).AsFloat();
if (index + 1 < components) {
dx += ", ";
dy += ", ";
}
}
dx += ')';
dy += ')';
expr += dx + ", " + dy;
return expr;
}
std::string BuildIntegerCoordinates(Operation operation) {
constexpr std::array constructors{"int(", "ivec2(", "ivec3(", "ivec4("};
const std::size_t coords_count{operation.GetOperandsCount()};
@ -1777,6 +1810,14 @@ private:
return {tmp, Type::Float};
}
Expression TextureGradient(Operation operation) {
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
ASSERT(meta);
std::string expr = GenerateTexture(operation, "Grad", {TextureDerivates{}, TextureAoffi{}});
return {expr + GetSwizzle(meta->element), Type::Float};
}
Expression ImageLoad(Operation operation) {
if (!device.HasImageLoadFormatted()) {
LOG_ERROR(Render_OpenGL,
@ -2131,6 +2172,7 @@ private:
&GLSLDecompiler::TextureQueryDimensions,
&GLSLDecompiler::TextureQueryLod,
&GLSLDecompiler::TexelFetch,
&GLSLDecompiler::TextureGradient,
&GLSLDecompiler::ImageLoad,
&GLSLDecompiler::ImageStore,

6
src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
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@ -982,6 +982,11 @@ private:
return {};
}
Id TextureGradient(Operation operation) {
UNIMPLEMENTED();
return {};
}
Id ImageLoad(Operation operation) {
UNIMPLEMENTED();
return {};
@ -1474,6 +1479,7 @@ private:
&SPIRVDecompiler::TextureQueryDimensions,
&SPIRVDecompiler::TextureQueryLod,
&SPIRVDecompiler::TexelFetch,
&SPIRVDecompiler::TextureGradient,
&SPIRVDecompiler::ImageLoad,
&SPIRVDecompiler::ImageStore,

56
src/video_core/shader/decode/texture.cpp
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@ -134,13 +134,55 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, {}, {}, {}, {}, {}, component, element};
MetaTexture meta{sampler, {}, {}, {}, {}, {}, {}, component, element};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
WriteTexsInstructionFloat(bb, instr, values, true);
break;
}
case OpCode::Id::TXD_B:
is_bindless = true;
[[fallthrough]];
case OpCode::Id::TXD: {
UNIMPLEMENTED_IF_MSG(instr.txd.UsesMiscMode(TextureMiscMode::AOFFI),
"AOFFI is not implemented");
const auto is_array = static_cast<bool>(instr.txd.is_array != 0);
UNIMPLEMENTED_IF_MSG(is_array, "TXD Array is not implemented");
u64 base_reg = instr.gpr8.Value();
const auto derivate_reg = instr.gpr20.Value();
const auto texture_type = instr.txd.texture_type.Value();
const auto coord_count = GetCoordCount(texture_type);
const auto& sampler = is_bindless
? GetBindlessSampler(base_reg, {{texture_type, false, false}})
: GetSampler(instr.sampler, {{texture_type, false, false}});
if (is_bindless) {
base_reg++;
}
std::vector<Node> coords;
std::vector<Node> derivates;
for (std::size_t i = 0; i < coord_count; ++i) {
coords.push_back(GetRegister(base_reg + i));
const std::size_t derivate = i * 2;
derivates.push_back(GetRegister(derivate_reg + derivate));
derivates.push_back(GetRegister(derivate_reg + derivate + 1));
}
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, {}, {}, {}, derivates, {}, {}, {}, element};
values[element] =
Operation(OperationCode::TextureGradient, meta, std::move(coords_copy));
}
WriteTexInstructionFloat(bb, instr, values);
break;
}
case OpCode::Id::TXQ_B:
is_bindless = true;
[[fallthrough]];
@ -158,7 +200,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
if (!instr.txq.IsComponentEnabled(element)) {
continue;
}
MetaTexture meta{sampler, {}, {}, {}, {}, {}, {}, element};
MetaTexture meta{sampler, {}, {}, {}, {}, {}, {}, {}, element};
const Node value =
Operation(OperationCode::TextureQueryDimensions, meta,
GetRegister(instr.gpr8.Value() + (is_bindless ? 1 : 0)));
@ -213,7 +255,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
continue;
}
auto params = coords;
MetaTexture meta{sampler, {}, {}, {}, {}, {}, {}, element};
MetaTexture meta{sampler, {}, {}, {}, {}, {}, {}, {}, element};
const Node value = Operation(OperationCode::TextureQueryLod, meta, std::move(params));
SetTemporary(bb, indexer++, value);
}
@ -461,7 +503,7 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto copy_coords = coords;
MetaTexture meta{sampler, array, depth_compare, aoffi, bias, lod, {}, element};
MetaTexture meta{sampler, array, depth_compare, aoffi, {}, bias, lod, {}, element};
values[element] = Operation(read_method, meta, std::move(copy_coords));
}
@ -594,7 +636,7 @@ Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool de
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, GetRegister(array_register), dc, aoffi, {}, {}, component,
MetaTexture meta{sampler, GetRegister(array_register), dc, aoffi, {}, {}, {}, component,
element};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
@ -628,7 +670,7 @@ Node4 ShaderIR::GetTldCode(Tegra::Shader::Instruction instr) {
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, array_register, {}, {}, {}, lod, {}, element};
MetaTexture meta{sampler, array_register, {}, {}, {}, {}, lod, {}, element};
values[element] = Operation(OperationCode::TexelFetch, meta, std::move(coords_copy));
}
@ -664,7 +706,7 @@ Node4 ShaderIR::GetTldsCode(Instruction instr, TextureType texture_type, bool is
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, array, {}, {}, {}, lod, {}, element};
MetaTexture meta{sampler, array, {}, {}, {}, {}, lod, {}, element};
values[element] = Operation(OperationCode::TexelFetch, meta, std::move(coords_copy));
}
return values;

2
src/video_core/shader/node.h
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@ -151,6 +151,7 @@ enum class OperationCode {
TextureQueryDimensions, /// (MetaTexture, float a) -> float4
TextureQueryLod, /// (MetaTexture, float[N] coords) -> float4
TexelFetch, /// (MetaTexture, int[N], int) -> float4
TextureGradient, /// (MetaTexture, float[N] coords, float[N*2] derivates) -> float4
ImageLoad, /// (MetaImage, int[N] coords) -> void
ImageStore, /// (MetaImage, int[N] coords) -> void
@ -363,6 +364,7 @@ struct MetaTexture {
Node array;
Node depth_compare;
std::vector<Node> aoffi;
std::vector<Node> derivates;
Node bias;
Node lod;
Node component{};