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Merge pull request #3109 from FernandoS27/new-instr

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Implement FLO & TXD Instructions on GPU Shaders
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bunnei 2019-12-06 18:18:16 -05:00 • committed by GitHub
commit e36814d6d5
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 171 additions and 8 deletions
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51
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -49,8 +49,9 @@ class ExprDecompiler;
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));
@ -1112,6 +1113,8 @@ 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();
}
@ -1181,6 +1184,36 @@ 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()};
@ -1450,6 +1483,11 @@ private:
return GenerateUnary(operation, "bitCount", type, type);
}
template <Type type>
Expression BitMSB(Operation operation) {
return GenerateUnary(operation, "findMSB", type, type);
}
Expression HNegate(Operation operation) {
const auto GetNegate = [&](std::size_t index) {
return VisitOperand(operation, index).AsBool() + " ? -1 : 1";
@ -1738,6 +1776,14 @@ private:
return {std::move(expr), 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 {std::move(expr) + GetSwizzle(meta->element), Type::Float};
}
Expression ImageLoad(Operation operation) {
if (!device.HasImageLoadFormatted()) {
LOG_ERROR(Render_OpenGL,
@ -2003,6 +2049,7 @@ private:
&GLSLDecompiler::BitfieldInsert<Type::Int>,
&GLSLDecompiler::BitfieldExtract<Type::Int>,
&GLSLDecompiler::BitCount<Type::Int>,
&GLSLDecompiler::BitMSB<Type::Int>,
&GLSLDecompiler::Add<Type::Uint>,
&GLSLDecompiler::Mul<Type::Uint>,
@ -2021,6 +2068,7 @@ private:
&GLSLDecompiler::BitfieldInsert<Type::Uint>,
&GLSLDecompiler::BitfieldExtract<Type::Uint>,
&GLSLDecompiler::BitCount<Type::Uint>,
&GLSLDecompiler::BitMSB<Type::Uint>,
&GLSLDecompiler::Add<Type::HalfFloat>,
&GLSLDecompiler::Mul<Type::HalfFloat>,
@ -2084,6 +2132,7 @@ private:
&GLSLDecompiler::TextureQueryDimensions,
&GLSLDecompiler::TextureQueryLod,
&GLSLDecompiler::TexelFetch,
&GLSLDecompiler::TextureGradient,
&GLSLDecompiler::ImageLoad,
&GLSLDecompiler::ImageStore,