} else if (surface->bpp == 32)
{
opcode=3;
- if (surface->clut.data)
- {
- lookup8=getColor(surface->clut, background, foreground).lookup;
- for (int i=0; i<16; ++i)
- lookup32_normal[i]=((surface->clut.data[lookup8[i]].a<<24)|
- (surface->clut.data[lookup8[i]].r<<16)|
- (surface->clut.data[lookup8[i]].g<<8)|
- (surface->clut.data[lookup8[i]].b))^0xFF000000;
- } else
+
+ for (int i=0; i<16; ++i)
{
- for (int i=0; i<16; ++i)
- lookup32_normal[i]=(0x010101*i)|0xFF000000;
+#define BLEND(y, x, a) (y + (((x-y) * a)>>8))
+
+ unsigned char da = background.a, dr = background.r, dg = background.g, db = background.b;
+ int sa = i * 16;
+ if (sa < 256)
+ {
+ da = BLEND(background.a, foreground.a, sa) & 0xFF;
+ dr = BLEND(background.r, foreground.r, sa) & 0xFF;
+ dg = BLEND(background.g, foreground.g, sa) & 0xFF;
+ db = BLEND(background.b, foreground.b, sa) & 0xFF;
+ }
+#undef BLEND
+ da ^= 0xFF;
+ lookup32_normal[i]=db | (dg << 8) | (dr << 16) | (da << 24);;
}
for (int i=0; i<16; ++i)
lookup32_invert[i]=lookup32_normal[i^0xF];