From 2339fe199f3b08faa33b15048aa7158a2e0eff00 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Wed, 1 Apr 2020 21:37:32 -0300 Subject: shader_decompiler: Remove FragCoord.w hack and change IPA implementation Credits go to gdkchan and Ryujinx. The pull request used for this can be found here: https://github.com/Ryujinx/Ryujinx/pull/1082 yuzu was already using the header for interpolation, but it was missing the FragCoord.w multiplication described in the linked pull request. This commit finally removes the FragCoord.w == 1.0f hack from the shader decompiler. While we are at it, this commit renames some enumerations to match Nvidia's documentation (linked below) and fixes component declaration order in the shader program header (z and w were swapped). https://github.com/NVIDIA/open-gpu-doc/blob/master/Shader-Program-Header/Shader-Program-Header.html --- src/video_core/renderer_vulkan/vk_shader_decompiler.cpp | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) (limited to 'src/video_core/renderer_vulkan') diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp index d67f08cf9..b9f9e2714 100644 --- a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp +++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp @@ -35,7 +35,7 @@ namespace { using Sirit::Id; using Tegra::Engines::ShaderType; using Tegra::Shader::Attribute; -using Tegra::Shader::AttributeUse; +using Tegra::Shader::PixelImap; using Tegra::Shader::Register; using namespace VideoCommon::Shader; @@ -752,16 +752,16 @@ private: if (stage != ShaderType::Fragment) { continue; } - switch (header.ps.GetAttributeUse(location)) { - case AttributeUse::Constant: + switch (header.ps.GetPixelImap(location)) { + case PixelImap::Constant: Decorate(id, spv::Decoration::Flat); break; - case AttributeUse::ScreenLinear: - Decorate(id, spv::Decoration::NoPerspective); - break; - case AttributeUse::Perspective: + case PixelImap::Perspective: // Default break; + case PixelImap::ScreenLinear: + Decorate(id, spv::Decoration::NoPerspective); + break; default: UNREACHABLE_MSG("Unused attribute being fetched"); } @@ -1145,9 +1145,6 @@ private: switch (attribute) { case Attribute::Index::Position: { if (stage == ShaderType::Fragment) { - if (element == 3) { - return {Constant(t_float, 1.0f), Type::Float}; - } return {OpLoad(t_float, AccessElement(t_in_float, frag_coord, element)), Type::Float}; } -- cgit v1.2.3