X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fdrivers%2Fllvmpipe%2Flp_tile_cache.c;h=ec3e002d6282697f2bba27c45581773cbc1516db;hb=7d6c8f980d1e23ad6f557d650e89c715861a3b0c;hp=2e576e6039d45f841b6aa9012c0dcba0a50b4057;hpb=02f2bcdf1d28f2bd6382fb6048c497ef76ba86b2;p=mesa.git

diff --git a/src/gallium/drivers/llvmpipe/lp_tile_cache.c b/src/gallium/drivers/llvmpipe/lp_tile_cache.c
index 2e576e6039d..ec3e002d628 100644
--- a/src/gallium/drivers/llvmpipe/lp_tile_cache.c
+++ b/src/gallium/drivers/llvmpipe/lp_tile_cache.c
@@ -44,10 +44,53 @@
 #include "lp_tile_cache.h"
 
 
+#define MAX_WIDTH 4096
+#define MAX_HEIGHT 4096
+
+
+enum llvmpipe_tile_status
+{
+   LP_TILE_STATUS_UNDEFINED = 0,
+   LP_TILE_STATUS_CLEAR = 1,
+   LP_TILE_STATUS_DEFINED = 2
+};
+
+
+struct llvmpipe_cached_tile
+{
+   enum llvmpipe_tile_status status;
+
+   /** color in SOA format */
+   uint8_t *color;
+};
+
+
+struct llvmpipe_tile_cache
+{
+   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;
+   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)
@@ -193,47 +236,41 @@ lp_flush_tile_cache(struct llvmpipe_tile_cache *tc)
    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];
 
-         switch(tile->status) {
-         case LP_TILE_STATUS_UNDEFINED:
-            break;
-
-         case LP_TILE_STATUS_CLEAR: {
-            /**
-             * Actually clear the tiles which were flagged as being in a clear state.
-             */
-
-            struct pipe_screen *screen = pt->texture->screen;
-            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;
-
-            util_fill_rect(dst, &pt->block, pt->stride,
-                           x, y, tw,  th,
-                           tc->clear_val);
-
-            screen->transfer_unmap(screen, pt);
+         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;
-            break;
-         }
-
-         case LP_TILE_STATUS_DEFINED:
-            lp_put_tile_rgba_soa(pt, x, y, tile->color);
-            tile->status = LP_TILE_STATUS_UNDEFINED;
-            break;
          }
       }
    }
@@ -251,6 +288,9 @@ lp_get_cached_tile(struct llvmpipe_tile_cache *tc,
    struct llvmpipe_cached_tile *tile = &tc->entries[y/TILE_SIZE][x/TILE_SIZE];
    struct pipe_transfer *pt = tc->transfer;
    
+   assert(tc->surface);
+   assert(tc->transfer);
+
    switch(tile->status) {
    case LP_TILE_STATUS_CLEAR:
       /* don't get tile from framebuffer, just clear it */
@@ -258,11 +298,22 @@ lp_get_cached_tile(struct llvmpipe_tile_cache *tc,
       tile->status = LP_TILE_STATUS_DEFINED;
       break;
 
-   case LP_TILE_STATUS_UNDEFINED:
-      /* get new tile data from transfer */
-      lp_get_tile_rgba_soa(pt, x & ~(TILE_SIZE - 1), y & ~(TILE_SIZE - 1), tile->color);
+   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;
+   }
 
    case LP_TILE_STATUS_DEFINED:
       /* nothing to do */