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Merge pull request #3592 from ReinUsesLisp/ipa

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shader_decompiler: Remove FragCoord.w hack and change IPA implementation
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Fernando Sahmkow 2020-04-05 19:29:40 -04:00 • committed by GitHub
commit 69277de29d
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 74 additions and 68 deletions
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34
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -31,11 +31,11 @@ namespace {
using Tegra::Engines::ShaderType;
using Tegra::Shader::Attribute;
using Tegra::Shader::AttributeUse;
using Tegra::Shader::Header;
using Tegra::Shader::IpaInterpMode;
using Tegra::Shader::IpaMode;
using Tegra::Shader::IpaSampleMode;
using Tegra::Shader::PixelImap;
using Tegra::Shader::Register;
using VideoCommon::Shader::BuildTransformFeedback;
using VideoCommon::Shader::Registry;
@ -702,20 +702,19 @@ private:
code.AddNewLine();
}
std::string GetInputFlags(AttributeUse attribute) {
const char* GetInputFlags(PixelImap attribute) {
switch (attribute) {
case AttributeUse::Perspective:
// Default, Smooth
return {};
case AttributeUse::Constant:
return "flat ";
case AttributeUse::ScreenLinear:
return "noperspective ";
default:
case AttributeUse::Unused:
UNIMPLEMENTED_MSG("Unknown attribute usage index={}", static_cast<u32>(attribute));
return {};
case PixelImap::Perspective:
return "smooth";
case PixelImap::Constant:
return "flat";
case PixelImap::ScreenLinear:
return "noperspective";
case PixelImap::Unused:
break;
}
UNIMPLEMENTED_MSG("Unknown attribute usage index={}", static_cast<int>(attribute));
return {};
}
void DeclareInputAttributes() {
@ -749,8 +748,8 @@ private:
std::string suffix;
if (stage == ShaderType::Fragment) {
const auto input_mode{header.ps.GetAttributeUse(location)};
if (skip_unused && input_mode == AttributeUse::Unused) {
const auto input_mode{header.ps.GetPixelImap(location)};
if (input_mode == PixelImap::Unused) {
return;
}
suffix = GetInputFlags(input_mode);
@ -927,7 +926,7 @@ private:
const u32 address{generic_base + index * generic_stride + element * element_stride};
const bool declared = stage != ShaderType::Fragment ||
header.ps.GetAttributeUse(index) != AttributeUse::Unused;
header.ps.GetPixelImap(index) != PixelImap::Unused;
const std::string value =
declared ? ReadAttribute(attribute, element).AsFloat() : "0.0f";
code.AddLine("case 0x{:X}U: return {};", address, value);
@ -1142,8 +1141,7 @@ private:
GetSwizzle(element)),
Type::Float};
case ShaderType::Fragment:
return {element == 3 ? "1.0f" : ("gl_FragCoord"s + GetSwizzle(element)),
Type::Float};
return {"gl_FragCoord"s + GetSwizzle(element), Type::Float};
default:
UNREACHABLE();
}