39 lines
No EOL
1.1 KiB
Text
39 lines
No EOL
1.1 KiB
Text
include "pipelines/common.glsl"
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vertex_shader [[
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layout (location = 0) out vec2 v_uv;
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void main() {
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vec4 pos = fullscreenQuad(gl_VertexID, v_uv);
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gl_Position = pos;
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}
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]]
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fragment_shader [[
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layout (binding=0) uniform sampler2D u_source;
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layout (binding=1) uniform sampler2D u_noise;
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layout (location = 0) in vec2 v_uv;
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layout (location = 0) out vec4 o_color;
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layout(std140, binding = 4) uniform Drawcall {
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float u_grainamount;
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float u_lumamount;
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};
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vec3 filmGrain(vec2 tex_coord, vec2 tex_size, vec3 in_color)
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{
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vec3 noise = texelFetch(u_noise, (ivec2(gl_FragCoord.xy) + ivec2(Global.time * 1e4)) % ivec2(textureSize(u_noise, 0)), 0).xyz;
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float luminance = mix(0.0, luminance(in_color), u_lumamount);
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float lum = smoothstep(0.2, 0.0, luminance) + luminance;
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lum += luminance;
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noise = mix(vec3(0.0), vec3(pow(lum, 4.0)), noise);
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return in_color + noise * u_grainamount;
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}
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void main() {
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vec3 c = texture(u_source, v_uv).rgb;
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vec2 tex_size = textureSize(u_source, 0);
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o_color.rgb = filmGrain(v_uv, tex_size, c);
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o_color.w = 1;
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}
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]] |