1 uniform sampler2D mrt0, mrt1, mrt2, mrt3;

2 uniform vec2 tex_scale;

3

4 void main()

5 {

6 vec2 tc = gl_TexCoord[0].st;

7 //vec4 texel0 = texture2D(mrt0, gl_TexCoord[0].st * s);

8

9 vec4 texel;

10 if(tc.x < 0.25) {

11 texel = texture2D(mrt0, tc * vec2(4.0, 1.0) * tex_scale);

12 } else if(tc.x < 0.5) {

13 texel = texture2D(mrt0, (tc - vec2(0.25, 0.0)) * vec2(4.0, 1.0) * tex_scale);

14 } else if(tc.x < 0.75) {

15 texel = texture2D(mrt0, (tc - vec2(0.5, 0.0)) * vec2(4.0, 1.0) * tex_scale);

16 } else {

17 texel = texture2D(mrt0, (tc - vec2(0.75, 0.0)) * vec2(4.0, 1.0) * tex_scale);

18 }

19

20 gl_FragColor = texel;

21 }