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Start implementing cache routines for textures.

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First step to consolidating surface/texture caching...
This commit is contained in:
Brian 2007-10-21 18:06:35 -06:00
parent c2322333b8
commit b3204c2aff
2 changed files with 71 additions and 1 deletions
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61
src/mesa/pipe/softpipe/sp_tile_cache.c
View file

@ -49,6 +49,7 @@
struct softpipe_tile_cache
{
struct softpipe_surface *surface; /**< the surface we're caching */
struct pipe_mipmap_tree *texture; /**< if caching a texture */
struct softpipe_cached_tile entries[NUM_ENTRIES];
uint clear_flags[(MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32];
};
@ -124,6 +125,12 @@ sp_tile_cache_set_surface(struct softpipe_tile_cache *tc,
}
void
sp_tile_cache_set_texture(struct softpipe_tile_cache *tc,
struct pipe_mipmap_tree *texture)
{
tc->texture = texture;
}
void
@ -249,6 +256,60 @@ sp_get_cached_tile(struct softpipe_tile_cache *tc, int x, int y)
}
/**
* Given the texture face, level, zslice, x and y values, compute
* the cache entry position/index where we'd hope to find the
* cached texture tile.
* This is basically a direct-map cache.
* XXX There's probably lots of ways in which we can improve this.
*/
static uint
tex_cache_pos(int x, int y, int z, int face, int level)
{
uint entry = x + y * 2 + z * 4 + face + level;
return entry % NUM_ENTRIES;
}
/**
* Similar to sp_get_cached_tile() but for textures.
* Tiles are read-only and indexed with more params.
*/
struct softpipe_cached_tile *
sp_get_cached_tile_tex(struct softpipe_tile_cache *tc, int x, int y, int z,
int face, int level)
{
struct pipe_context *pipe; /* XXX need this */
/* tile pos in framebuffer: */
const int tile_x = x & ~(TILE_SIZE - 1);
const int tile_y = y & ~(TILE_SIZE - 1);
/* cache pos/entry: */
const int pos = tex_cache_pos(x / TILE_SIZE, y / TILE_SIZE,
z, face, level);
struct softpipe_cached_tile *tile = tc->entries + pos;
if (tile_x != tile->x ||
tile_y != tile->y ||
z != tile->z ||
face != tile->face ||
level != tile->level) {
struct pipe_surface *ps
= pipe->get_tex_surface(pipe, tc->texture, face, level, z);
ps->get_tile(ps,
tile_x, tile_y, TILE_SIZE, TILE_SIZE,
(float *) tile->data.color);
pipe_surface_reference(&ps, NULL);
}
return tile;
}
void
sp_clear_tile_cache(struct softpipe_tile_cache *tc, unsigned clearval)
{

11
src/mesa/pipe/softpipe/sp_tile_cache.h
View file

@ -45,7 +45,8 @@ struct softpipe_tile_cache;
struct softpipe_cached_tile
{
int x, y; /** pos of tile in window coords */
int x, y; /**< pos of tile in window coords */
int z, face, level; /**< Extra texture indexes */
union {
float color[TILE_SIZE][TILE_SIZE][4];
uint depth32[TILE_SIZE][TILE_SIZE];
@ -65,6 +66,10 @@ extern void
sp_tile_cache_set_surface(struct softpipe_tile_cache *tc,
struct softpipe_surface *sps);
extern void
sp_tile_cache_set_texture(struct softpipe_tile_cache *tc,
struct pipe_mipmap_tree *texture);
extern void
sp_flush_tile_cache(struct softpipe_tile_cache *tc);
@ -74,6 +79,10 @@ sp_clear_tile_cache(struct softpipe_tile_cache *tc, unsigned clearval);
extern struct softpipe_cached_tile *
sp_get_cached_tile(struct softpipe_tile_cache *tc, int x, int y);
extern struct softpipe_cached_tile *
sp_get_cached_tile_tex(struct softpipe_tile_cache *tc, int x, int y, int z,
int face, int level);
#endif /* SP_TILE_CACHE_H */