raylib/examples/resources/shaders/grayscale.fs
raysan5 eae98e1c34 Big batch of changes, check description:
- Camera system moved to a separate module [camera.c]
- WIP: Added customization functions for camera controls
- Added custom shaders support on batch drawing
- Complete redesign of textures module to support multiple texture
formats (compressed and uncompressed)
2015-05-04 23:46:31 +02:00

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GLSL

#version 110
uniform sampler2D texture0;
varying vec2 fragTexCoord;
varying vec4 fragColor;
void main()
{
vec4 base = texture2D(texture0, fragTexCoord)*fragColor;
// Convert to grayscale using NTSC conversion weights
float gray = dot(base.rgb, vec3(0.299, 0.587, 0.114));
gl_FragColor = vec4(gray, gray, gray, base.a);
}