stk-code_catmod/data/shaders/ppdisplace.frag
2014-02-28 17:29:05 +01:00

36 lines
492 B
GLSL

uniform sampler2D tex;
uniform sampler2D dtex;
uniform int viz;
#if __VERSION__ >= 130
in vec2 uv;
out vec4 FragColor;
#else
varying vec2 uv;
#define FragColor gl_FragColor
#endif
void main()
{
vec2 tc = uv;
vec4 shiftval = texture(dtex, tc) / vec4(50.0);
vec2 shift;
shift.x = -shiftval.x + shiftval.y;
shift.y = -shiftval.z + shiftval.w;
tc += shift;
vec4 newcol = texture(tex, tc);
if (viz < 1)
{
FragColor = newcol;
} else
{
FragColor = shiftval * vec4(50.0);
}
}