From ada79fa8ad94952c4ddee766a3bb9091dc6282e0 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Fri, 3 May 2019 02:59:25 -0300
Subject: [PATCH] gl_shader_decompiler: Make GetSwizzle constexpr
---
.../renderer_opengl/gl_shader_decompiler.cpp | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 4bff54a599..713eded6d2 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -31,6 +31,8 @@ using Tegra::Shader::IpaInterpMode;
using Tegra::Shader::IpaMode;
using Tegra::Shader::IpaSampleMode;
using Tegra::Shader::Register;
+
+using namespace std::string_literals;
using namespace VideoCommon::Shader;
using Maxwell = Tegra::Engines::Maxwell3D::Regs;
@@ -96,11 +98,9 @@ private:
};
/// Generates code to use for a swizzle operation.
-std::string GetSwizzle(u32 elem) {
- ASSERT(elem <= 3);
- std::string swizzle = ".";
- swizzle += "xyzw"[elem];
- return swizzle;
+constexpr const char* GetSwizzle(u32 element) {
+ constexpr std::array<const char*, 4> swizzle = {".x", ".y", ".z", ".w"};
+ return swizzle.at(element);
}
/// Translate topology
@@ -622,7 +622,7 @@ private:
if (stage != ShaderStage::Fragment) {
return GeometryPass("position") + GetSwizzle(element);
} else {
- return element == 3 ? "1.0f" : "gl_FragCoord" + GetSwizzle(element);
+ return element == 3 ? "1.0f" : ("gl_FragCoord"s + GetSwizzle(element));
}
case Attribute::Index::PointCoord:
switch (element) {
@@ -909,7 +909,7 @@ private:
target = [&]() -> std::string {
switch (const auto attribute = abuf->GetIndex(); abuf->GetIndex()) {
case Attribute::Index::Position:
- return "position" + GetSwizzle(abuf->GetElement());
+ return "position"s + GetSwizzle(abuf->GetElement());
case Attribute::Index::PointSize:
return "gl_PointSize";
case Attribute::Index::ClipDistances0123:
--
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