#include "lp_tile_cache.h"
+#define MAX_WIDTH 4096
+#define MAX_HEIGHT 4096
-/**
- * Return the position in the cache for the tile that contains win pos (x,y).
- * We currently use a direct mapped cache so this is like a hack key.
- * At some point we should investige something more sophisticated, like
- * a LRU replacement policy.
- */
-#define CACHE_POS(x, y) \
- (((x) + (y) * 5) % NUM_ENTRIES)
+enum llvmpipe_tile_status
+{
+ LP_TILE_STATUS_UNDEFINED = 0,
+ LP_TILE_STATUS_CLEAR = 1,
+ LP_TILE_STATUS_DEFINED = 2
+};
-/**
- * Is the tile at (x,y) in cleared state?
- */
-static INLINE uint
-is_clear_flag_set(const uint *bitvec, union tile_address addr)
+struct llvmpipe_cached_tile
{
- int pos, bit;
- 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;
-}
-
+ enum llvmpipe_tile_status status;
-/**
- * Mark the tile at (x,y) as not cleared.
- */
-static INLINE void
-clear_clear_flag(uint *bitvec, union tile_address addr)
+ /** color in SOA format */
+ uint8_t *color;
+};
+
+
+struct llvmpipe_tile_cache
{
- int pos;
- 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));
-}
-
+ struct pipe_screen *screen;
+ struct pipe_surface *surface; /**< the surface we're caching */
+ struct pipe_transfer *transfer;
+ void *transfer_map;
+
+ struct llvmpipe_cached_tile entries[MAX_WIDTH/TILE_SIZE][MAX_HEIGHT/TILE_SIZE];
+
+ uint8_t clear_color[4]; /**< for color bufs */
+ uint clear_val; /**< for z+stencil, or packed color clear value */
+
+ struct llvmpipe_cached_tile *last_tile; /**< most recently retrieved tile */
+};
+
struct llvmpipe_tile_cache *
lp_create_tile_cache( struct pipe_screen *screen )
{
struct llvmpipe_tile_cache *tc;
- uint pos;
-
- tc = align_malloc( sizeof(struct llvmpipe_tile_cache), 16 );
- if (tc) {
- memset(tc, 0, sizeof *tc);
- tc->screen = screen;
- for (pos = 0; pos < NUM_ENTRIES; pos++) {
- tc->entries[pos].addr.bits.invalid = 1;
- }
- tc->last_tile = &tc->entries[0]; /* any tile */
- }
+ int maxLevels, maxTexSize;
+
+ /* sanity checking: max sure MAX_WIDTH/HEIGHT >= largest texture image */
+ maxLevels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
+ maxTexSize = 1 << (maxLevels - 1);
+ assert(MAX_WIDTH >= maxTexSize);
+
+ tc = CALLOC_STRUCT( llvmpipe_tile_cache );
+ if(!tc)
+ return NULL;
+
+ tc->screen = screen;
+
return tc;
}
lp_destroy_tile_cache(struct llvmpipe_tile_cache *tc)
{
struct pipe_screen *screen;
- uint pos;
+ unsigned x, y;
- for (pos = 0; pos < NUM_ENTRIES; pos++) {
- /*assert(tc->entries[pos].x < 0);*/
+ for (y = 0; y < MAX_HEIGHT; y += TILE_SIZE) {
+ for (x = 0; x < MAX_WIDTH; x += TILE_SIZE) {
+ struct llvmpipe_cached_tile *tile = &tc->entries[y/TILE_SIZE][x/TILE_SIZE];
+
+ if(tile->color)
+ align_free(tile->color);
+ }
}
+
if (tc->transfer) {
screen = tc->transfer->texture->screen;
screen->tex_transfer_destroy(tc->transfer);
}
- if (tc->tex_trans) {
- screen = tc->tex_trans->texture->screen;
- screen->tex_transfer_destroy(tc->tex_trans);
- }
- align_free( tc );
+ FREE( tc );
}
lp_tile_cache_set_surface(struct llvmpipe_tile_cache *tc,
struct pipe_surface *ps)
{
- assert(!tc->texture);
-
if (tc->transfer) {
struct pipe_screen *screen = tc->transfer->texture->screen;
if (ps) {
struct pipe_screen *screen = ps->texture->screen;
+ unsigned x, y;
tc->transfer = screen->get_tex_transfer(screen, ps->texture, ps->face,
ps->level, ps->zslice,
PIPE_TRANSFER_READ_WRITE,
0, 0, ps->width, ps->height);
+
+ for (y = 0; y < ps->height; y += TILE_SIZE) {
+ for (x = 0; x < ps->width; x += TILE_SIZE) {
+ struct llvmpipe_cached_tile *tile = &tc->entries[y/TILE_SIZE][x/TILE_SIZE];
+
+ tile->status = LP_TILE_STATUS_UNDEFINED;
+
+ if(!tile->color)
+ tile->color = align_malloc( TILE_SIZE*TILE_SIZE*NUM_CHANNELS, 16 );
+ }
+ }
}
}
{
if (tc->transfer && !tc->transfer_map)
tc->transfer_map = tc->screen->transfer_map(tc->screen, tc->transfer);
-
- if (tc->tex_trans && !tc->tex_trans_map)
- tc->tex_trans_map = tc->screen->transfer_map(tc->screen, tc->tex_trans);
}
tc->screen->transfer_unmap(tc->screen, tc->transfer);
tc->transfer_map = NULL;
}
-
- if (tc->tex_trans_map) {
- tc->screen->transfer_unmap(tc->screen, tc->tex_trans);
- tc->tex_trans_map = NULL;
- }
}
}
-/**
- * Actually clear the tiles which were flagged as being in a clear state.
- */
-static void
-lp_tile_cache_flush_clear(struct llvmpipe_tile_cache *tc)
-{
- struct pipe_transfer *pt = tc->transfer;
- struct pipe_screen *screen = pt->texture->screen;
- const uint w = tc->transfer->width;
- const uint h = tc->transfer->height;
- uint x, y;
- uint numCleared = 0;
-
- /* 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) {
- union tile_address addr = tile_address(x, y, 0, 0, 0);
-
- if (is_clear_flag_set(tc->clear_flags, addr)) {
- unsigned tw = TILE_SIZE;
- unsigned th = TILE_SIZE;
- void *dst;
-
- if (pipe_clip_tile(x, y, &tw, &th, pt))
- continue;
-
- dst = screen->transfer_map(screen, pt);
- assert(dst);
- if(!dst)
- continue;
-
- pipe_fill_rect(dst, &pt->block, pt->stride,
- x, y, tw, th,
- tc->clear_val);
-
- /* do this? */
- clear_clear_flag(tc->clear_flags, addr);
-
- numCleared++;
- }
- }
- }
-#if 0
- debug_printf("num cleared: %u\n", numCleared);
-#endif
-}
-
-
/**
* Flush the tile cache: write all dirty tiles back to the transfer.
* any tiles "flagged" as cleared will be "really" cleared.
lp_flush_tile_cache(struct llvmpipe_tile_cache *tc)
{
struct pipe_transfer *pt = tc->transfer;
- int inuse = 0, pos;
-
- if (pt) {
- /* caching a drawing transfer */
- for (pos = 0; pos < NUM_ENTRIES; pos++) {
- struct llvmpipe_cached_tile *tile = tc->entries + pos;
- if (!tile->addr.bits.invalid) {
- lp_put_tile_rgba_soa(pt,
- tile->addr.bits.x * TILE_SIZE,
- tile->addr.bits.y * TILE_SIZE,
- tile->color);
- tile->addr.bits.invalid = 1; /* mark as empty */
- inuse++;
- }
- }
+ unsigned x, y;
-#if TILE_CLEAR_OPTIMIZATION
- lp_tile_cache_flush_clear(tc);
-#endif
- }
- else if (tc->texture) {
- /* caching a texture, mark all entries as empty */
- for (pos = 0; pos < NUM_ENTRIES; pos++) {
- tc->entries[pos].addr.bits.invalid = 1;
+ if(!pt)
+ return;
+
+ assert(tc->transfer_map);
+
+ /* push the tile to all positions marked as clear */
+ for (y = 0; y < pt->height; y += TILE_SIZE) {
+ for (x = 0; x < pt->width; x += TILE_SIZE) {
+ struct llvmpipe_cached_tile *tile = &tc->entries[y/TILE_SIZE][x/TILE_SIZE];
+
+ if(tile->status != LP_TILE_STATUS_UNDEFINED) {
+ unsigned w = TILE_SIZE;
+ unsigned h = TILE_SIZE;
+
+ if (!pipe_clip_tile(x, y, &w, &h, pt)) {
+ switch(tile->status) {
+ case LP_TILE_STATUS_CLEAR:
+ /* Actually clear the tiles which were flagged as being in a
+ * clear state. */
+ util_fill_rect(tc->transfer_map, &pt->block, pt->stride,
+ x, y, w, h,
+ tc->clear_val);
+ break;
+
+ case LP_TILE_STATUS_DEFINED:
+ lp_tile_write_4ub(pt->format,
+ tile->color,
+ tc->transfer_map, pt->stride,
+ x, y, w, h);
+ break;
+
+ default:
+ assert(0);
+ break;
+ }
+ }
+
+ tile->status = LP_TILE_STATUS_UNDEFINED;
+ }
}
- tc->tex_face = -1;
}
-
-#if 0
- debug_printf("flushed tiles in use: %d\n", inuse);
-#endif
}
* \param x, y position of tile, in pixels
*/
void *
-lp_find_cached_tile(struct llvmpipe_tile_cache *tc,
- union tile_address addr )
+lp_get_cached_tile(struct llvmpipe_tile_cache *tc,
+ unsigned x, unsigned y )
{
+ struct llvmpipe_cached_tile *tile = &tc->entries[y/TILE_SIZE][x/TILE_SIZE];
struct pipe_transfer *pt = tc->transfer;
- /* cache pos/entry: */
- const int pos = CACHE_POS(addr.bits.x,
- addr.bits.y);
- struct llvmpipe_cached_tile *tile = tc->entries + pos;
-
- if (addr.value != tile->addr.value) {
-
- if (tile->addr.bits.invalid == 0) {
- /* put dirty tile back in framebuffer */
- lp_put_tile_rgba_soa(pt,
- tile->addr.bits.x * TILE_SIZE,
- tile->addr.bits.y * TILE_SIZE,
- tile->color);
- }
-
- tile->addr = addr;
-
- if (is_clear_flag_set(tc->clear_flags, addr)) {
- /* don't get tile from framebuffer, just clear it */
- clear_tile(tile, tc->clear_color);
- clear_clear_flag(tc->clear_flags, addr);
- }
- else {
- /* get new tile data from transfer */
- lp_get_tile_rgba_soa(pt,
- tile->addr.bits.x * TILE_SIZE,
- tile->addr.bits.y * TILE_SIZE,
- tile->color);
- }
+ assert(tc->surface);
+ assert(tc->transfer);
+
+ switch(tile->status) {
+ case LP_TILE_STATUS_CLEAR:
+ /* don't get tile from framebuffer, just clear it */
+ clear_tile(tile, tc->clear_color);
+ tile->status = LP_TILE_STATUS_DEFINED;
+ break;
+
+ case LP_TILE_STATUS_UNDEFINED: {
+ unsigned w = TILE_SIZE;
+ unsigned h = TILE_SIZE;
+
+ x &= ~(TILE_SIZE - 1);
+ y &= ~(TILE_SIZE - 1);
+
+ if (!pipe_clip_tile(x, y, &w, &h, tc->transfer))
+ lp_tile_read_4ub(pt->format,
+ tile->color,
+ tc->transfer_map, tc->transfer->stride,
+ x, y, w, h);
+
+ tile->status = LP_TILE_STATUS_DEFINED;
+ break;
}
- tc->last_tile = tile;
+ case LP_TILE_STATUS_DEFINED:
+ /* nothing to do */
+ break;
+ }
return tile->color;
}
-/**
- * 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 INLINE uint
-tex_cache_pos( union tile_address addr )
-{
- uint entry = (addr.bits.x +
- addr.bits.y * 9 +
- addr.bits.z * 3 +
- addr.bits.face +
- addr.bits.level * 7);
-
- return entry % NUM_ENTRIES;
-}
-
-
/**
* When a whole surface is being cleared to a value we can avoid
* fetching tiles above.
lp_tile_cache_clear(struct llvmpipe_tile_cache *tc, const float *rgba,
uint clearValue)
{
- unsigned chan;
- uint pos;
+ struct pipe_transfer *pt = tc->transfer;
+ const unsigned w = pt->width;
+ const unsigned h = pt->height;
+ unsigned x, y, chan;
for(chan = 0; chan < 4; ++chan)
tc->clear_color[chan] = float_to_ubyte(rgba[chan]);
tc->clear_val = clearValue;
-#if TILE_CLEAR_OPTIMIZATION
- /* set flags to indicate all the tiles are cleared */
- memset(tc->clear_flags, 255, sizeof(tc->clear_flags));
-#else
- /* disable the optimization */
- memset(tc->clear_flags, 0, sizeof(tc->clear_flags));
-#endif
-
- for (pos = 0; pos < NUM_ENTRIES; pos++) {
- struct llvmpipe_cached_tile *tile = tc->entries + pos;
- tile->addr.bits.invalid = 1;
+ /* 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) {
+ struct llvmpipe_cached_tile *tile = &tc->entries[y/TILE_SIZE][x/TILE_SIZE];
+ tile->status = LP_TILE_STATUS_CLEAR;
+ }
}
}
projects / mesa.git / blobdiff