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Differential D3505 Diff 11531 source/blender/draw/engines/lanpr/shaders/lanpr_snake_image_peel_frag.glsl

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source/blender/draw/engines/lanpr/shaders/lanpr_snake_image_peel_frag.glsl

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in vec4 uvcoordsvar;
uniform sampler2D tex_sample_0;
uniform int stage;
int decisions[256] = int[] (0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1,
1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1,
0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1,
1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1,
1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1,
1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1,
0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1,
1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0,
1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0);
int PickPixel(ivec2 sp){
vec4 accum = vec4(0);
//for(int i=0;i<4;i++){
accum += texelFetch(tex_sample_0, sp, 0);
//}
return (accum.r > 0.9) ? 1 : 0;
}
//MZS Thinning method, implemented by YimingWu
void main(){
ivec2 texSize = textureSize(tex_sample_0, 0);
ivec2 sp = ivec2(uvcoordsvar.xy * texSize);
vec4 OriginalColor = texelFetch(tex_sample_0, sp, 0);
int p2 = PickPixel(sp + ivec2(0, +1));
int p3 = PickPixel(sp + ivec2(+1, +1));
int p4 = PickPixel(sp + ivec2(+1, 0));
int p5 = PickPixel(sp + ivec2(+1, -1));
int p6 = PickPixel(sp + ivec2(0, -1));
int p7 = PickPixel(sp + ivec2(-1, -1));
int p8 = PickPixel(sp + ivec2(-1, 0));
int p9 = PickPixel(sp + ivec2(-1, +1));
int Bp1 = p2 + p3 + p4 + p5 + p6 + p7 + p8 + p9;
bool bp2 = bool(p2);
bool bp3 = bool(p3);
bool bp4 = bool(p4);
bool bp5 = bool(p5);
bool bp6 = bool(p6);
bool bp7 = bool(p7);
bool bp8 = bool(p8);
bool bp9 = bool(p9);
int Cp1 = int(!bp2 && (bp3 || bp4)) + int(!bp4 && (bp5 || bp6)) + int(!bp6 && (bp7 || bp8)) + int(!bp8 && (bp9 || bp2));
if (stage == 0) {
if (((sp.x + sp.y) % 2 == 0) &&
(Cp1 == 1) &&
(Bp1 >= 2 && Bp1 <= 7) &&
(p2 * p4 * p6 == 0) &&
(p4 * p6 * p8 == 0)) {
gl_FragColor = vec4(0, 0, 0, 1);
return;
}
gl_FragColor = OriginalColor;
}
else {
if (((sp.x + sp.y) % 2 != 0) &&
(Cp1 == 1) &&
(Bp1 >= 1 && Bp1 <= 7) &&
(p2 * p4 * p8 == 0) &&
(p2 * p6 * p8 == 0)) {
gl_FragColor = vec4(0, 0, 0, 1);
return;
}
gl_FragColor = OriginalColor;
}
//int test = PickPixel(sp+ivec2(-1,-1))*1 + PickPixel(sp+ivec2(0 ,-1))*2 + PickPixel(sp+ivec2(+1,-1))*4
// + PickPixel(sp+ivec2(-1, 0))*8 + PickPixel(sp+ivec2(+1, 0))*16
// + PickPixel(sp+ivec2(-1,+1))*32 + PickPixel(sp+ivec2( 0,+1))*64 + PickPixel(sp+ivec2(+1,+1))*128;
//if(decisions[test]==1) gl_FragColor=vec4(1,0,0,1);
//else gl_FragColor=texelFetch(tex_sample_0, sp, 0);//vec4(1,1,1,1);
}
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