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structurized textures.cpp

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Zeno Rogue
2018-03-17 21:12:46 +01:00
parent 5188e3649d
commit 2c09c5ee56
9 changed files with 298 additions and 277 deletions
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7
polygons.cpp
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@@ -210,9 +210,10 @@ void drawTexturedTriangle(SDL_Surface *s, int *px, int *py, glvertex *tv, int co
hyperpoint h = isource * hpxyz(mx, my, 1);
if(h[0] >= -1e-7 && h[1] >= -1e-7 && h[2] >= -1e-7) {
hyperpoint ht = target * h;
int x = int(ht[0] * texture::twidth) & (texture::twidth-1);
int y = int(ht[1] * texture::twidth) & (texture::twidth-1);
int c = texture::texture_pixels[y * texture::twidth + x];
int tw = texture::config.data.twidth;
int x = int(ht[0] * tw) & (tw-1);
int y = int(ht[1] * tw) & (tw-1);
int c = texture::config.data.texture_pixels[y * tw + x];
auto& pix = qpixel(s, mx, my);
for(int p=0; p<3; p++) {
int alpha = part(c, 3) * part(col, 0);