mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-11-11 13:03:49 +01:00
44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
|
//
|
||
|
|
// Simple passthrough fragment shader
|
||
|
|
//
|
||
|
|
varying vec2 v_vTexcoord;
|
||
|
|
varying vec4 v_vColour;
|
||
|
|
|
||
|
|
uniform vec2 dimension;
|
||
|
|
uniform float tolerance;
|
||
|
|
|
||
|
|
bool sameColor(in vec4 c1, in vec4 c2) {
|
||
|
|
if(abs(c1.r - c2.r) > tolerance) return false;
|
||
|
|
if(abs(c1.g - c2.g) > tolerance) return false;
|
||
|
|
if(abs(c1.b - c2.b) > tolerance) return false;
|
||
|
|
if(abs(c1.a - c2.a) > tolerance) return false;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
vec4 curr_color = texture2D( gm_BaseTexture, v_vTexcoord );
|
||
|
|
|
||
|
|
vec2 _dim = 1. / dimension;
|
||
|
|
|
||
|
|
vec4 col_t = texture2D( gm_BaseTexture, v_vTexcoord + vec2(0., _dim.y));
|
||
|
|
vec4 col_b = texture2D( gm_BaseTexture, v_vTexcoord + vec2(0., -_dim.y));
|
||
|
|
|
||
|
|
vec4 col_l = texture2D( gm_BaseTexture, v_vTexcoord + vec2(-_dim.x, 0.));
|
||
|
|
vec4 col_r = texture2D( gm_BaseTexture, v_vTexcoord + vec2( _dim.x, 0.));
|
||
|
|
|
||
|
|
if(!sameColor(curr_color, col_t)) {
|
||
|
|
if(sameColor(col_t, col_b) && sameColor(col_b, col_l) && sameColor(col_l, col_r))
|
||
|
|
curr_color = col_t;
|
||
|
|
else if(sameColor(col_t, col_l) && sameColor(col_t, col_r))
|
||
|
|
curr_color = col_t;
|
||
|
|
else if(sameColor(col_t, col_b) && sameColor(col_t, col_r))
|
||
|
|
curr_color = col_t;
|
||
|
|
else if(sameColor(col_t, col_b) && sameColor(col_t, col_l))
|
||
|
|
curr_color = col_t;
|
||
|
|
} else if(!sameColor(curr_color, col_b) && sameColor(col_b, col_l) && sameColor(col_b, col_r))
|
||
|
|
curr_color = col_b;
|
||
|
|
|
||
|
|
gl_FragColor = curr_color;
|
||
|
|
}
|