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TDT4230_final_project
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Add grain to post-shader

This commit is contained in:
Peder Bergebakken Sundt 2019-04-01 13:09:09 +02:00
parent 2857b5a31c
commit e97dfefc96
1 changed files with 5 additions and 0 deletions
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5
res/shaders/post.frag
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@ -14,6 +14,10 @@ const float chomatic_abberation_r = 0.0;
const float chomatic_abberation_g = 0.025; const float chomatic_abberation_g = 0.025;
const float chomatic_abberation_b = 0.05; const float chomatic_abberation_b = 0.05;
float random (vec2 st) {
return fract(sin(dot(st.xy, time*vec2(12.9898,78.233)))*43758.5453123);
}
void main() { void main() {
vec2 dx = vec2(1,0) * 1.0/windowWidth; vec2 dx = vec2(1,0) * 1.0/windowWidth;
vec2 dy = vec2(0,1) * 1.0/windowHeight; vec2 dy = vec2(0,1) * 1.0/windowHeight;
@ -32,5 +36,6 @@ void main() {
color.b += texture(framebuffer, (p-0.5)*(1+z*chomatic_abberation_b) + 0.5).b; color.b += texture(framebuffer, (p-0.5)*(1+z*chomatic_abberation_b) + 0.5).b;
} }
color /= pow(2*radius+1, 2); color /= pow(2*radius+1, 2);
color += (random(UV)-0.5) * z * 0.2;
color_out = vec4(color * (1-pow(length((UV-0.5)*1.2), 3)), 1.0); // vignette color_out = vec4(color * (1-pow(length((UV-0.5)*1.2), 3)), 1.0); // vignette
} }