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llvmpipe: build list of 4x4 blocks to be shaded

This commit is contained in:
Keith Whitwell 2009-10-20 08:56:58 +01:00
parent 1735325a23
commit 8d752a20c6
1 changed files with 26 additions and 12 deletions
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38
src/gallium/drivers/llvmpipe/lp_rast_tri.c
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@ -36,30 +36,33 @@
#define BLOCKSIZE 4
static struct {
int x;
int y;
unsigned mask;
} blocks[256];
static int nr_blocks;
/* Render a 4x4 unmasked block:
*/
static void block_full_4( struct lp_rasterizer *rast,
const struct lp_rast_triangle *tri,
int x, int y )
{
unsigned mask = ~0;
lp_rast_shade_quads(rast, &tri->inputs, x, y, mask);
blocks[nr_blocks].x = x;
blocks[nr_blocks].y = y;
blocks[nr_blocks].mask = ~0;
nr_blocks++;
}
static void block_full_16( struct lp_rasterizer *rast,
const struct lp_rast_triangle *tri,
int x, int y )
{
unsigned mask = ~0;
unsigned ix, iy;
for (iy = 0; iy < 16; iy+=4)
for (ix = 0; ix < 16; ix+=4)
lp_rast_shade_quads(rast, &tri->inputs, x + ix, y + iy , mask);
block_full_4(rast, x + ix, y + iy);
}
@ -87,8 +90,12 @@ do_block_4( struct lp_rasterizer *rast,
/* As we do trivial reject already, masks should rarely be all
* zero:
*/
if (mask)
lp_rast_shade_quads(rast, &tri->inputs, x, y, mask );
if (mask) {
blocks[nr_blocks].x = x;
blocks[nr_blocks].y = y;
blocks[nr_blocks].mask = mask;
nr_blocks++;
}
}
static void
@ -126,7 +133,7 @@ do_block_16( struct lp_rasterizer *rast,
cx2 + ei2 > 0 &&
cx3 + ei3 > 0)
{
block_full_4(rast, tri, x+ix, y+iy); /* trivial accept */
block_full_4(rast, x+ix, y+iy); /* trivial accept */
}
else
{
@ -162,6 +169,7 @@ void lp_rast_triangle( struct lp_rasterizer *rast,
debug_printf("%s\n", __FUNCTION__);
nr_blocks = 0;
for (iy = 0; iy < 64; iy+=16)
{
@ -180,7 +188,7 @@ void lp_rast_triangle( struct lp_rasterizer *rast,
cx2 + ei2 > 0 &&
cx3 + ei3 > 0)
{
block_full_16(rast, tri, x+ix, y+iy); /* trivial accept */
block_full_16(rast, x+ix, y+iy); /* trivial accept */
}
else
{
@ -188,5 +196,11 @@ void lp_rast_triangle( struct lp_rasterizer *rast,
}
}
}
for (i = 0; i < nr_blocks; i++)
lp_rast_shade_quads(rast, &tri->inputs,
blocks[i].x,
blocks[i].y,
blocks[i].mask);
}