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TinyGL: Fix ZB_fillTriangleSmooth to support the colour-support patch.

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This commit is contained in:
Einar Johan Trøan Sømåen 2012-10-24 22:51:38 +02:00
parent 78da72b303
commit 51babbf092
1 changed files with 13 additions and 12 deletions
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25
graphics/tinygl/ztriangle.cpp
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@ -43,23 +43,24 @@ void ZB_fillTriangleSmooth(ZBuffer *zb, ZBufferPoint *p0, ZBufferPoint *p1, ZBuf
_drgbdx |= (SAR_RND_TO_ZERO(dbdx, 7) << 12) & 0x001FF000; \
}
#define PUT_PIXEL(_a) { \
if (ZCMP(z, pz[_a])) { \
tmp = rgb & 0xF81F07E0; \
pp[_a] = tmp | (tmp >> 16); \
pz[_a] = z; \
} \
z += dzdx; \
rgb = (rgb + drgbdx) & (~0x00200800); \
#define PUT_PIXEL(_a) { \
if (ZCMP(z, pz[_a])) { \
tmp = rgb & 0xF81F07E0; \
buf.setPixelAt(_a, tmp | (tmp >> 16)); \
pz[_a] = z; \
} \
z += dzdx; \
rgb = (rgb + drgbdx) & (~0x00200800); \
}
#define DRAW_LINE() { \
register unsigned int *pz; \
register PIXEL *pp; \
Graphics::PixelBuffer buf = zb->pbuf; \
register unsigned int z, rgb, drgbdx; \
register int n; \
n = (x2 >> 16) - x1; \
pp = pp1 + x1; \
int bpp = buf.getFormat().bytesPerPixel; \
buf = (byte *)pp1 + x1 * bpp; \
pz = pz1 + x1; \
z = z1; \
rgb =(r1 << 16) & 0xFFC00000; \
@ -72,13 +73,13 @@ void ZB_fillTriangleSmooth(ZBuffer *zb, ZBufferPoint *p0, ZBufferPoint *p1, ZBuf
PUT_PIXEL(2); \
PUT_PIXEL(3); \
pz += 4; \
pp += 4; \
buf.shiftBy(4); \
n -= 4; \
} \
while (n >= 0) { \
PUT_PIXEL(0); \
buf.shiftBy(1); \
pz += 1; \
pp += 1; \
n -= 1; \
} \
}