From 515194968d033d2c0c5678677f7606d38635d747 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Sun, 15 Aug 2010 16:32:45 +0100 Subject: [PATCH] llvmpipe: version of block4 which doesn't need the full step array No noticable slowdown with isosurf. --- src/gallium/drivers/llvmpipe/lp_rast_tri.c | 30 +++++++++++++++---- .../drivers/llvmpipe/lp_rast_tri_tmp.h | 4 ++- 2 files changed, 27 insertions(+), 7 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" diff --git a/src/gallium/drivers/llvmpipe/lp_rast_tri_tmp.h b/src/gallium/drivers/llvmpipe/lp_rast_tri_tmp.h index fcb8e2b05d2..e14886f0b9b 100644 --- a/src/gallium/drivers/llvmpipe/lp_rast_tri_tmp.h +++ b/src/gallium/drivers/llvmpipe/lp_rast_tri_tmp.h @@ -50,7 +50,9 @@ TAG(do_block_4)(struct lp_rasterizer_task *task, int j; for (j = 0; j < NR_PLANES; j++) { - mask &= ~build_mask(c[j] - 1, plane[j].step); + mask &= ~build_mask(c[j] - 1, + plane[j].step[1], + plane[j].step[2]); } /* Now pass to the shader: -- 2.30.2