| #version 140 |
| |
| #extension GL_ARB_fragment_coord_conventions: require |
| #extension GL_ARB_explicit_attrib_location : enable |
| |
| #ifdef GL_ES |
| precision mediump float; |
| #endif |
| |
| in vec4 i; |
| |
| layout (origin_upper_left,pixel_center_integer) in vec4 gl_FragCoord; |
| layout (location = 0) out vec4 myColor; |
| |
| const float eps=0.001; |
| |
| void main() |
| { |
| myColor = vec4(0.2); |
| if (gl_FragCoord.y >= 10) { |
| myColor.b = 0.8; |
| } |
| if (gl_FragCoord.y == trunc(gl_FragCoord.y)) { |
| myColor.g = 0.8; |
| } |
| if (gl_FragCoord.x == trunc(gl_FragCoord.x)) { |
| myColor.r = 0.8; |
| } |
| |
| vec4 diff = gl_FragCoord - i; |
| if (abs(diff.z)>eps) |
| myColor.b = 0.5; |
| if (abs(diff.w)>eps) |
| myColor.a = 0.5; |
| |
| } |