raylib/shaders/glsl330/cross_stitching.fs

54 lines
1.2 KiB
GLSL

#version 330
in vec2 fragTexCoord;
out vec4 fragColor;
uniform sampler2D texture0;
uniform vec4 fragTintColor;
// NOTE: Add here your custom variables
const float renderWidth = 1280.0;
const float renderHeight = 720.0;
float stitchingSize = 6.0;
uniform int invert = 0;
vec4 PostFX(sampler2D tex, vec2 uv)
{
vec4 c = vec4(0.0);
float size = stitchingSize;
vec2 cPos = uv * vec2(renderWidth, renderHeight);
vec2 tlPos = floor(cPos / vec2(size, size));
tlPos *= size;
int remX = int(mod(cPos.x, size));
int remY = int(mod(cPos.y, size));
if (remX == 0 && remY == 0) tlPos = cPos;
vec2 blPos = tlPos;
blPos.y += (size - 1.0);
if ((remX == remY) || (((int(cPos.x) - int(blPos.x)) == (int(blPos.y) - int(cPos.y)))))
{
if (invert == 1) c = vec4(0.2, 0.15, 0.05, 1.0);
else c = texture(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
}
else
{
if (invert == 1) c = texture(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
else c = vec4(0.0, 0.0, 0.0, 1.0);
}
return c;
}
void main(void)
{
vec3 tc = PostFX(texture0, fragTexCoord).rgb;
fragColor = vec4(tc, 1.0);
}