diff options
| author | Keith Whitwell <[email protected]> | 2010-08-15 16:32:45 +0100 |
|---|---|---|
| committer | Keith Whitwell <[email protected]> | 2010-08-15 16:32:45 +0100 |
| commit | 515194968d033d2c0c5678677f7606d38635d747 (patch) | |
| tree | 7b373d6cbf1311b0c60816e2b4577589d85fa3ae /src/gallium/drivers/llvmpipe/lp_rast_tri.c | |
| parent | 510b03539413552a543e25de6b896eb10baf60ae (diff) | |
llvmpipe: version of block4 which doesn't need the full step array
No noticable slowdown with isosurf.
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_rast_tri.c')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_rast_tri.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_rast_tri.c b/src/gallium/drivers/llvmpipe/lp_rast_tri.c index c1f2680ddca..28a04461725 100644 --- a/src/gallium/drivers/llvmpipe/lp_rast_tri.c +++ b/src/gallium/drivers/llvmpipe/lp_rast_tri.c @@ -115,19 +115,37 @@ block_full_16(struct lp_rasterizer_task *task, static INLINE unsigned -build_mask(int c, const int *step) +build_mask(int c, int dcdx, int dcdy) { int mask = 0; - int i; - for (i = 0; i < 16; i++) { - mask |= ((c + step[i]) >> 31) & (1 << i); - } - + int c0 = c; + int c1 = c0 + dcdx; + int c2 = c1 + dcdx; + int c3 = c2 + dcdx; + + mask |= ((c0 + 0 * dcdy) >> 31) & (1 << 0); + mask |= ((c0 + 1 * dcdy) >> 31) & (1 << 2); + mask |= ((c0 + 2 * dcdy) >> 31) & (1 << 8); + mask |= ((c0 + 3 * dcdy) >> 31) & (1 << 10); + mask |= ((c1 + 0 * dcdy) >> 31) & (1 << 1); + mask |= ((c1 + 1 * dcdy) >> 31) & (1 << 3); + mask |= ((c1 + 2 * dcdy) >> 31) & (1 << 9); + mask |= ((c1 + 3 * dcdy) >> 31) & (1 << 11); + mask |= ((c2 + 0 * dcdy) >> 31) & (1 << 4); + mask |= ((c2 + 1 * dcdy) >> 31) & (1 << 6); + mask |= ((c2 + 2 * dcdy) >> 31) & (1 << 12); + mask |= ((c2 + 3 * dcdy) >> 31) & (1 << 14); + mask |= ((c3 + 0 * dcdy) >> 31) & (1 << 5); + mask |= ((c3 + 1 * dcdy) >> 31) & (1 << 7); + mask |= ((c3 + 2 * dcdy) >> 31) & (1 << 13); + mask |= ((c3 + 3 * dcdy) >> 31) & (1 << 15); + return mask; } + #define TAG(x) x##_1 #define NR_PLANES 1 #include "lp_rast_tri_tmp.h" |