| Brian Paul | 4978953 | 2008-05-20 11:01:17 -0600 | [diff] [blame] | 1 | // Multi-texture fragment shader |
| 2 | // Brian Paul |
| 3 | |
| 4 | // Composite second texture over first. |
| 5 | // We're assuming the 2nd texture has a meaningful alpha channel. |
| 6 | |
| 7 | uniform sampler2D tex1; |
| 8 | uniform sampler2D tex2; |
| 9 | |
| Brian Paul | aab429c | 2008-11-04 16:56:59 -0700 | [diff] [blame] | 10 | void main() |
| 11 | { |
| Brian Paul | e535940 | 2008-11-10 10:21:13 -0700 | [diff] [blame] | 12 | vec4 t1 = texture2D(tex1, gl_TexCoord[0].xy); |
| 13 | vec4 t2 = texture2D(tex2, gl_TexCoord[1].xy); |
| 14 | gl_FragColor = mix(t1, t2, t2.w); |
| Brian Paul | aab429c | 2008-11-04 16:56:59 -0700 | [diff] [blame] | 15 | } |