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Optimize AutoInvertColors shader

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Not sure if that single if statement counts as branching code, but it's generally a good idea to avoid if statements in shader code, so I used step instead.
This commit is contained in:
Manolis Papadeas 2021-05-22 16:08:11 +03:00
parent 08dc639e5a
commit 1b286a95ab
1 changed files with 3 additions and 3 deletions
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6
src/Shaders/AutoInvertColors.shader
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@ -2,8 +2,8 @@ shader_type canvas_item;
void fragment() {
vec3 inverted = vec3(1.0) - COLOR.rgb;
vec3 screen_color = textureLod(SCREEN_TEXTURE, SCREEN_UV, 0.0).rgb;
if((screen_color.r + screen_color.g + screen_color.b) / 3.0 < 0.5){
COLOR.rgb = vec3(1.0) - COLOR.rgb;
}
float avg = (screen_color.r + screen_color.g + screen_color.b) / 3.0;
COLOR.rgb = inverted * step(avg, 0.5);
}