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hedgewars/uRenderUtils.pas
changeset 10860 891bf0aca23e
parent 10691 97f45f1374be
child 11046 47a8c19ecb60
equal deleted inserted replaced
10859:d7e3abe3d5c2 10860:891bf0aca23e 
   169             SDL_GetRGBA(destPixels^[i], dest^.format, @r0, @g0, @b0, @a0);
 
   169             SDL_GetRGBA(destPixels^[i], dest^.format, @r0, @g0, @b0, @a0);
 
   170             SDL_GetRGBA(srcPixels^[j], src^.format, @r1, @g1, @b1, @a1);
 
   170             SDL_GetRGBA(srcPixels^[j], src^.format, @r1, @g1, @b1, @a1);
 
   171             r0:= (r0 * (255 - LongInt(a1)) + r1 * LongInt(a1)) div 255;
 
   171             r0:= (r0 * (255 - LongInt(a1)) + r1 * LongInt(a1)) div 255;
 
   172             g0:= (g0 * (255 - LongInt(a1)) + g1 * LongInt(a1)) div 255;
 
   172             g0:= (g0 * (255 - LongInt(a1)) + g1 * LongInt(a1)) div 255;
 
   173             b0:= (b0 * (255 - LongInt(a1)) + b1 * LongInt(a1)) div 255;
 
   173             b0:= (b0 * (255 - LongInt(a1)) + b1 * LongInt(a1)) div 255;
 
   174             a0:= (a0 * (255 - LongInt(a1)) + a1 * LongInt(a1)) div 255;
 
   174             a0:= a0 + ((255 - LongInt(a0)) * a1 div 255);
 
   175             destPixels^[i]:= SDL_MapRGBA(dest^.format, r0, g0, b0, a0);
 
   175             destPixels^[i]:= SDL_MapRGBA(dest^.format, r0, g0, b0, a0);
 
   176             end;
 
   176             end;
 
   177         end;
 
   177         end;
 
   178 
   178 
   179     SDL_UnlockSurface(src);
 
   179     SDL_UnlockSurface(src);
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