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softpipe: also shortcircuit non-texture tile lookups

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This commit is contained in:
Keith Whitwell
2009-07-22 15:36:25 +01:00
parent f911c3b989
commit 19097907ef
2 changed files with 31 additions and 18 deletions
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33
src/gallium/drivers/softpipe/sp_tile_cache.c
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@@ -49,7 +49,7 @@
* a LRU replacement policy.
*/
#define CACHE_POS(x, y) \
(((x) / TILE_SIZE + ((y) / TILE_SIZE) * 5) % NUM_ENTRIES)
(((x) + (y) * 5) % NUM_ENTRIES)
@@ -57,12 +57,10 @@
* Is the tile at (x,y) in cleared state?
*/
static INLINE uint
is_clear_flag_set(const uint *bitvec, int x, int y)
is_clear_flag_set(const uint *bitvec, union tile_address addr)
{
int pos, bit;
x /= TILE_SIZE;
y /= TILE_SIZE;
pos = y * (MAX_WIDTH / TILE_SIZE) + x;
pos = addr.bits.y * (MAX_WIDTH / TILE_SIZE) + addr.bits.x;
assert(pos / 32 < (MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32);
bit = bitvec[pos / 32] & (1 << (pos & 31));
return bit;
@@ -73,12 +71,10 @@ is_clear_flag_set(const uint *bitvec, int x, int y)
* Mark the tile at (x,y) as not cleared.
*/
static INLINE void
clear_clear_flag(uint *bitvec, int x, int y)
clear_clear_flag(uint *bitvec, union tile_address addr)
{
int pos;
x /= TILE_SIZE;
y /= TILE_SIZE;
pos = y * (MAX_WIDTH / TILE_SIZE) + x;
pos = addr.bits.y * (MAX_WIDTH / TILE_SIZE) + addr.bits.x;
assert(pos / 32 < (MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32);
bitvec[pos / 32] &= ~(1 << (pos & 31));
}
@@ -349,13 +345,15 @@ sp_tile_cache_flush_clear(struct softpipe_tile_cache *tc)
/* push the tile to all positions marked as clear */
for (y = 0; y < h; y += TILE_SIZE) {
for (x = 0; x < w; x += TILE_SIZE) {
if (is_clear_flag_set(tc->clear_flags, x, y)) {
union tile_address addr = tile_address(x, y, 0, 0, 0);
if (is_clear_flag_set(tc->clear_flags, addr)) {
pipe_put_tile_raw(pt,
x, y, TILE_SIZE, TILE_SIZE,
tc->tile.data.color32, 0/*STRIDE*/);
/* do this? */
clear_clear_flag(tc->clear_flags, x, y);
clear_clear_flag(tc->clear_flags, addr);
numCleared++;
}
@@ -424,14 +422,14 @@ sp_flush_tile_cache(struct softpipe_tile_cache *tc)
* \param x, y position of tile, in pixels
*/
struct softpipe_cached_tile *
sp_get_cached_tile(struct softpipe_tile_cache *tc, int x, int y)
sp_find_cached_tile(struct softpipe_tile_cache *tc,
union tile_address addr )
{
struct pipe_transfer *pt = tc->transfer;
/* tile pos in framebuffer: */
union tile_address addr = tile_address( x, y, 0, 0, 0 );
/* cache pos/entry: */
const int pos = CACHE_POS(x, y);
const int pos = CACHE_POS(addr.bits.x,
addr.bits.y);
struct softpipe_cached_tile *tile = tc->entries + pos;
if (addr.value != tile->addr.value) {
@@ -456,7 +454,7 @@ sp_get_cached_tile(struct softpipe_tile_cache *tc, int x, int y)
tile->addr = addr;
if (is_clear_flag_set(tc->clear_flags, x, y)) {
if (is_clear_flag_set(tc->clear_flags, addr)) {
/* don't get tile from framebuffer, just clear it */
if (tc->depth_stencil) {
clear_tile(tile, pt->format, tc->clear_val);
@@ -464,7 +462,7 @@ sp_get_cached_tile(struct softpipe_tile_cache *tc, int x, int y)
else {
clear_tile_rgba(tile, pt->format, tc->clear_color);
}
clear_clear_flag(tc->clear_flags, x, y);
clear_clear_flag(tc->clear_flags, addr);
}
else {
/* get new tile data from transfer */
@@ -485,6 +483,7 @@ sp_get_cached_tile(struct softpipe_tile_cache *tc, int x, int y)
}
}
tc->last_tile = tile;
return tile;
}