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source/blender/draw/engines/lanpr/shaders/lanpr_image_peel.fragment
- This file was added.
| in vec4 uvcoordsvar; | |||||
| uniform sampler2D TexSample0; | |||||
| 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(TexSample0, sp, 0); | |||||
| //} | |||||
| return (accum.r>0.9)?1:0; | |||||
| } | |||||
| //MZS Thinning method, implemented by YimingWu | |||||
| void main(){ | |||||
| ivec2 texSize = textureSize(TexSample0,0); | |||||
| ivec2 sp = ivec2(uvcoordsvar.xy * texSize); | |||||
| vec4 OriginalColor = texelFetch(TexSample0, 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(TexSample0, sp, 0);//vec4(1,1,1,1); | |||||
| } | |||||
| No newline at end of file | |||||