From df793fc0493a67ca2838ba816232da8409d03c8a Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Mon, 24 May 2021 00:55:39 -0400
Subject: glsl: Implement FCMP
---
src/shader_recompiler/backend/glsl/reg_alloc.cpp | 12 ++++++++++++
1 file changed, 12 insertions(+)
(limited to 'src/shader_recompiler/backend/glsl/reg_alloc.cpp')
diff --git a/src/shader_recompiler/backend/glsl/reg_alloc.cpp b/src/shader_recompiler/backend/glsl/reg_alloc.cpp
index 007f8c89d2..9f529c3583 100644
--- a/src/shader_recompiler/backend/glsl/reg_alloc.cpp
+++ b/src/shader_recompiler/backend/glsl/reg_alloc.cpp
@@ -25,6 +25,18 @@ std::string Representation(Id id) {
}
std::string FormatFloat(std::string_view value, IR::Type type) {
+ // TODO: Confirm FP64 nan/inf
+ if (type == IR::Type::F32) {
+ if (value == "nan") {
+ return "uintBitsToFloat(0x7fc00000)";
+ }
+ if (value == "inf") {
+ return "uintBitsToFloat(0x7f800000)";
+ }
+ if (value == "-inf") {
+ return "uintBitsToFloat(0xff800000)";
+ }
+ }
const bool needs_dot = value.find_first_of('.') == std::string_view::npos;
const bool needs_suffix = !value.ends_with('f');
const auto suffix = type == IR::Type::F32 ? "f" : "lf";
--
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