ilikecats/stk-code_catmod
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Add a vignette to simulate a real camera

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This commit is contained in:
samuncle 2014-03-03 14:12:56 +01:00
parent 4fd6d29462
commit 4b92ee1716
1 changed files with 7 additions and 7 deletions
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14
data/shaders/color_levels.frag
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@ -14,13 +14,13 @@ varying vec2 uv;
void main() void main()
{ {
vec2 texc = uv; vec4 col = texture(tex, uv);
//texc.y = 1.0 - texc.y;
// Compute the vignette
vec4 col = texture(tex, texc); vec2 inside = uv - 0.5;
float vignette = 1 - dot(inside, inside);
//col = col / (1 - col); vignette = clamp(pow(vignette, 0.8), 0, 1);
vignette = vignette + vignette - 0.5;
float inBlack = inlevel.x; float inBlack = inlevel.x;
float inWhite = inlevel.z; float inWhite = inlevel.z;
@ -32,5 +32,5 @@ void main()
col.rgb = (pow(((col.rgb * 255.0) - inBlack) / (inWhite - inBlack), col.rgb = (pow(((col.rgb * 255.0) - inBlack) / (inWhite - inBlack),
vec3(1.0 / inGamma)) * (outWhite - outBlack) + outBlack) / 255.0; vec3(1.0 / inGamma)) * (outWhite - outBlack) + outBlack) / 255.0;
FragColor = vec4(col.rgb, 1.0); FragColor = vec4(col.rgb * vignette, 1.0);
} }