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ray:: well-defined bounds in for loops in shaders

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Zeno Rogue 2019-11-03 13:36:40 +01:00
parent 3725b06d0b
commit 7a70fc717d
1 changed files with 2 additions and 1 deletions
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raycaster.cpp
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@ -209,7 +209,8 @@ void enable_raycaster() {
fsh += fsh +=
"int s = uWallstart[which];\n" "int s = uWallstart[which];\n"
"int e = uWallstart[which+1];\n" "int e = uWallstart[which+1];\n"
"for(int i=s; i<e; i++) {\n" "for(int ix=0; ix<16; ix++) {\n"
"int i = s+ix; if(i >= e) break;\n"
"vec2 v = vec2(dot(uWallX[i], pos), dot(uWallY[i], pos));\n" "vec2 v = vec2(dot(uWallX[i], pos), dot(uWallY[i], pos));\n"
"if(v.x >= 0. && v.y >= 0. && v.x + v.y <= 1.) return vec2(v.x+v.y, v.x-v.y);\n" "if(v.x >= 0. && v.y >= 0. && v.x + v.y <= 1.) return vec2(v.x+v.y, v.x-v.y);\n"
"}\n" "}\n"