raylib/examples/resources/shaders/glsl330/grayscale.fs
raysan5 302ec438dd Removed colTint, tint color is colDiffuse
Tint color could be applied to colDiffuse... but what's the best way?
Replace it? Multiply by? A point to think about...
2016-05-31 18:15:53 +02:00

26 lines
648 B
GLSL

#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
void main()
{
// Texel color fetching from texture sampler
vec4 texelColor = texture(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
finalColor = vec4(gray, gray, gray, texelColor.a);
}