stk-code_catmod/data/shaders/sky.frag
2014-02-26 21:53:29 +01:00

18 lines
376 B
GLSL

#version 330
uniform samplerCube tex;
uniform mat4 InvProjView;
uniform vec2 screen;
in vec2 uv;
out vec4 FragColor;
void main(void)
{
vec3 eyedir = gl_FragCoord.xyz / vec3(screen, 1.);
eyedir = 2.0 * eyedir - 1.0;
vec4 tmp = (InvProjView * vec4(eyedir, 1.));
eyedir = tmp.xyz / tmp.w;
vec4 color = texture(tex, eyedir);
FragColor = vec4(color.xyz, 1.);
}