From 05cf27083608bebd3ee4c38f2f948c8f2030f881 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sun, 12 Apr 2020 22:39:57 -0300
Subject: [PATCH] gl_shader_decompiler: Implement merges with bitfieldInsert
This also fixes Turing issues but it avoids doing more bitcasts. This
should improve the generated code while also avoiding more points where
compilers can flush floats.
---
src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 59bbd1211..1f1f01313 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -1821,15 +1821,13 @@ private:
Expression HMergeH0(Operation operation) {
const std::string dest = VisitOperand(operation, 0).AsUint();
const std::string src = VisitOperand(operation, 1).AsUint();
- return {fmt::format("vec2(unpackHalf2x16({}).x, unpackHalf2x16({}).y)", src, dest),
- Type::HalfFloat};
+ return {fmt::format("bitfieldInsert({}, {}, 0, 16)", dest, src), Type::Uint};
}
Expression HMergeH1(Operation operation) {
const std::string dest = VisitOperand(operation, 0).AsUint();
const std::string src = VisitOperand(operation, 1).AsUint();
- return {fmt::format("vec2(unpackHalf2x16({}).x, unpackHalf2x16({}).y)", dest, src),
- Type::HalfFloat};
+ return {fmt::format("bitfieldInsert({}, {}, 16, 16)", dest, src), Type::Uint};
}
Expression HPack2(Operation operation) {