mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-12-25 22:46:19 +01:00
45 lines
1.3 KiB
GLSL
45 lines
1.3 KiB
GLSL
//
|
|
// Simple passthrough fragment shader
|
|
//
|
|
varying vec2 v_vTexcoord;
|
|
varying vec4 v_vColour;
|
|
|
|
uniform vec2 dimension;
|
|
uniform float kernel[9];
|
|
uniform int sampleMode;
|
|
|
|
vec4 sampleTexture(vec2 pos) {
|
|
if(pos.x >= 0. && pos.y >= 0. && pos.x <= 1. && pos.y <= 1.)
|
|
return texture2D(gm_BaseTexture, pos);
|
|
|
|
if(sampleMode == 0)
|
|
return vec4(0.);
|
|
|
|
else if(sampleMode == 1)
|
|
return texture2D(gm_BaseTexture, clamp(pos, 0., 1.));
|
|
|
|
else if(sampleMode == 2)
|
|
return texture2D(gm_BaseTexture, fract(pos));
|
|
|
|
else if(sampleMode == 3)
|
|
return vec4(vec3(0.), 1.);
|
|
|
|
return vec4(0.);
|
|
}
|
|
|
|
void main() {
|
|
vec2 tex = 1. / dimension;
|
|
vec4 c = + kernel[0] * sampleTexture( v_vTexcoord + vec2(-tex.x, -tex.y) )
|
|
+ kernel[1] * sampleTexture( v_vTexcoord + vec2( 0., -tex.y) )
|
|
+ kernel[2] * sampleTexture( v_vTexcoord + vec2( tex.x, -tex.y) )
|
|
|
|
+ kernel[3] * sampleTexture( v_vTexcoord + vec2(-tex.x, 0.) )
|
|
+ kernel[4] * sampleTexture( v_vTexcoord + vec2( 0., 0.) )
|
|
+ kernel[5] * sampleTexture( v_vTexcoord + vec2( tex.x, 0.) )
|
|
|
|
+ kernel[6] * sampleTexture( v_vTexcoord + vec2(-tex.x, tex.y) )
|
|
+ kernel[7] * sampleTexture( v_vTexcoord + vec2( 0., tex.y) )
|
|
+ kernel[8] * sampleTexture( v_vTexcoord + vec2( tex.x, tex.y) );
|
|
|
|
gl_FragColor = vec4(c.rgb, 1.);
|
|
}
|