render/vulkan: correct sRBG gamma expansion in shader

11 months ago · 5ae8ce807a
parent d1b39b5843
commit 5ae8ce807a
1 changed files with 3 additions and 1 deletions
--- a/render/vulkan/shaders/texture.frag
+++ b/render/vulkan/shaders/texture.frag
@ -16,7 +16,9 @@ layout (constant_id = 0) const int TEXTURE_TRANSFORM = 0;
 #define TEXTURE_TRANSFORM_SRGB 1

 float srgb_channel_to_linear(float x) {
-	return max(x / 12.92, pow((x + 0.055) / 1.055, 2.4));
+	return mix(x / 12.92,
+		pow((x + 0.055) / 1.055, 2.4),
+		x > 0.04045);
 }

 vec4 srgb_color_to_linear(vec4 color) {