ring/src/shaders/sky.lua

21 lines
496 B
Lua

return love.graphics.newShader[[
#define fog vec4( 0.85, 0.85, 1.0, 1.0 )
varying vec3 viewDir;
#ifdef VERTEX
uniform mat4 view;
uniform mat4 proj;
vec4 position( mat4 _, vec4 pos ){
viewDir = pos.xyz;
viewDir.y -= 0.5;
return proj*view*pos;
}
#endif
#ifdef PIXEL
uniform samplerCube cube;
vec4 effect( vec4 color, Image _, vec2 __, vec2 ___) {
return mix( fog,
Texel( cube, viewDir ),
dot(viewDir, vec3(0.0, 1.0, 0.0 )));;
}
#endif
]]