Nevar pievienot vairāk kā 25 tēmas
Tēmai ir jāsākas ar burtu vai ciparu, tā var saturēt domu zīmes ('-') un var būt līdz 35 simboliem gara.
29 rindas
840 B
29 rindas
840 B
#version 100
|
|
|
|
precision mediump float;
|
|
|
|
const int colors = 8;
|
|
|
|
// Input vertex attributes (from vertex shader)
|
|
varying vec2 fragTexCoord;
|
|
varying vec4 fragColor;
|
|
|
|
// Input uniform values
|
|
uniform sampler2D texture0;
|
|
uniform ivec3 palette[colors];
|
|
|
|
void main()
|
|
{
|
|
// Texel color fetching from texture sampler
|
|
vec4 texelColor = texture(texture0, fragTexCoord) * fragColor;
|
|
|
|
// Convert the (normalized) texel color RED component (GB would work, too)
|
|
// to the palette index by scaling up from [0, 1] to [0, 255].
|
|
int index = int(texelColor.r * 255.0);
|
|
ivec3 color = palette[index];
|
|
|
|
// Calculate final fragment color. Note that the palette color components
|
|
// are defined in the range [0, 255] and need to be normalized to [0, 1]
|
|
// for OpenGL to work.
|
|
gl_FragColor = vec4(color / 255.0, texelColor.a);
|
|
}
|