raylib/docs/examples/web/resources/shaders/glsl100/grayscale.fs
Ray San 1f6eb1fc61 Moved raylib webpage to docs folder
raylib webpage has been completely reorganized and moved from gh-pages
(a pain to work with) to docs folder. Useless libs have been removed,
webs have been renamed, etc.

Now it would be easier (hopefully) to update webpage. :)
2017-02-06 18:48:56 +01:00

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GLSL

#version 100
precision mediump float;
// Input vertex attributes (from vertex shader)
varying vec2 fragTexCoord;
varying vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// NOTE: Add here your custom variables
void main()
{
// Texel color fetching from texture sampler
vec4 texelColor = texture2D(texture0, fragTexCoord)*colDiffuse*fragColor;
// Convert texel color to grayscale using NTSC conversion weights
float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
// Calculate final fragment color
gl_FragColor = vec4(gray, gray, gray, texelColor.a);
}