llvmpipe: fix lp_resource_copy using more than one 3d slice

These used to be illegal a very long time ago, then for some more time
nothing really emitted these so this code path wasn't hit.
Just trivially iterate over box->depth.
(Might be worth refactoring at some point since nowadays all the code
doesn't really do much except for depth textures.)

This fixes https://bugs.freedesktop.org/show_bug.cgi?id=61093

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

1 files changed, 86 insertions, 84 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_surface.c b/src/gallium/drivers/llvmpipe/lp_surface.c
index 11475fd447c..dbaed95d2d5 100644
--- a/src/gallium/drivers/llvmpipe/lp_surface.c
+++ b/src/gallium/drivers/llvmpipe/lp_surface.c
@@ -65,7 +65,7 @@ lp_resource_copy(struct pipe_context *pipe,
    const enum pipe_format format = src_tex->base.format;
    unsigned width = src_box->width;
    unsigned height = src_box->height;
-   assert(src_box->depth == 1);
+   unsigned z;
 
    /* Fallback for buffers. */
    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
@@ -74,99 +74,101 @@ lp_resource_copy(struct pipe_context *pipe,
       return;
    }
 
-   llvmpipe_flush_resource(pipe,
-                           dst, dst_level, dstz,
-                           FALSE, /* read_only */
-                           TRUE, /* cpu_access */
-                           FALSE, /* do_not_block */
-                           "blit dest");
-
-   llvmpipe_flush_resource(pipe,
-                           src, src_level, src_box->z,
-                           TRUE, /* read_only */
-                           TRUE, /* cpu_access */
-                           FALSE, /* do_not_block */
-                           "blit src");
-
-   /*
-   printf("surface copy from %u lvl %u to %u lvl %u: %u,%u,%u to %u,%u,%u %u x %u x %u\n",
-          src_tex->id, src_level, dst_tex->id, dst_level, 
-          src_box->x, src_box->y, src_box->z, dstx, dsty, dstz,
-          src_box->width, src_box->height, src_box->depth);
-   */
-
-   /* set src tiles to linear layout */
-   {
-      unsigned tx, ty, tw, th;
-      unsigned x, y;
-
-      adjust_to_tile_bounds(src_box->x, src_box->y, width, height,
-                            &tx, &ty, &tw, &th);
-
-      for (y = 0; y < th; y += TILE_SIZE) {
-         for (x = 0; x < tw; x += TILE_SIZE) {
-            (void) llvmpipe_get_texture_tile_linear(src_tex,
-                                                    src_box->z, src_level,
-                                                    LP_TEX_USAGE_READ,
-                                                    tx + x, ty + y);
+   for (z = 0; z < src_box->depth; z++){
+      llvmpipe_flush_resource(pipe,
+                              dst, dst_level, dstz + z,
+                              FALSE, /* read_only */
+                              TRUE, /* cpu_access */
+                              FALSE, /* do_not_block */
+                              "blit dest");
+
+      llvmpipe_flush_resource(pipe,
+                              src, src_level, src_box->z + z,
+                              TRUE, /* read_only */
+                              TRUE, /* cpu_access */
+                              FALSE, /* do_not_block */
+                              "blit src");
+
+      /*
+      printf("surface copy from %u lvl %u to %u lvl %u: %u,%u,%u to %u,%u,%u %u x %u x %u\n",
+             src_tex->id, src_level, dst_tex->id, dst_level,
+             src_box->x, src_box->y, src_box->z, dstx, dsty, dstz,
+             src_box->width, src_box->height, src_box->depth);
+      */
+
+      /* set src tiles to linear layout */
+      {
+         unsigned tx, ty, tw, th;
+         unsigned x, y;
+
+         adjust_to_tile_bounds(src_box->x, src_box->y, width, height,
+                               &tx, &ty, &tw, &th);
+
+         for (y = 0; y < th; y += TILE_SIZE) {
+            for (x = 0; x < tw; x += TILE_SIZE) {
+               (void) llvmpipe_get_texture_tile_linear(src_tex,
+                                                       src_box->z + z, src_level,
+                                                       LP_TEX_USAGE_READ,
+                                                       tx + x, ty + y);
+            }
          }
       }
-   }
-
-   /* set dst tiles to linear layout */
-   {
-      unsigned tx, ty, tw, th;
-      unsigned x, y;
-      enum lp_texture_usage usage;
 
-      adjust_to_tile_bounds(dstx, dsty, width, height, &tx, &ty, &tw, &th);
+      /* set dst tiles to linear layout */
+      {
+         unsigned tx, ty, tw, th;
+         unsigned x, y;
+         enum lp_texture_usage usage;
 
-      for (y = 0; y < th; y += TILE_SIZE) {
-         boolean contained_y = ty + y >= dsty &&
-                               ty + y + TILE_SIZE <= dsty + height ?
-                               TRUE : FALSE;
+         adjust_to_tile_bounds(dstx, dsty, width, height, &tx, &ty, &tw, &th);
 
-         for (x = 0; x < tw; x += TILE_SIZE) {
-            boolean contained_x = tx + x >= dstx &&
-                                  tx + x + TILE_SIZE <= dstx + width ?
+         for (y = 0; y < th; y += TILE_SIZE) {
+            boolean contained_y = ty + y >= dsty &&
+                                  ty + y + TILE_SIZE <= dsty + height ?
                                   TRUE : FALSE;
 
-            /*
-             * Set the usage mode to WRITE_ALL for the tiles which are
-             * completely contained by the dest rectangle.
-             */
-            if (contained_y && contained_x)
-               usage = LP_TEX_USAGE_WRITE_ALL;
-            else
-               usage = LP_TEX_USAGE_READ_WRITE;
-
-            (void) llvmpipe_get_texture_tile_linear(dst_tex,
-                                                    dstz, dst_level,
-                                                    usage,
-                                                    tx + x, ty + y);
+            for (x = 0; x < tw; x += TILE_SIZE) {
+               boolean contained_x = tx + x >= dstx &&
+                                     tx + x + TILE_SIZE <= dstx + width ?
+                                     TRUE : FALSE;
+
+               /*
+                * Set the usage mode to WRITE_ALL for the tiles which are
+                * completely contained by the dest rectangle.
+                */
+               if (contained_y && contained_x)
+                  usage = LP_TEX_USAGE_WRITE_ALL;
+               else
+                  usage = LP_TEX_USAGE_READ_WRITE;
+
+               (void) llvmpipe_get_texture_tile_linear(dst_tex,
+                                                       dstz + z, dst_level,
+                                                       usage,
+                                                       tx + x, ty + y);
+            }
          }
       }
-   }
 
-   /* copy */
-   {
-      const ubyte *src_linear_ptr
-         = llvmpipe_get_texture_image_address(src_tex, src_box->z,
-                                              src_level,
-                                              LP_TEX_LAYOUT_LINEAR);
-      ubyte *dst_linear_ptr
-         = llvmpipe_get_texture_image_address(dst_tex, dstz,
-                                              dst_level,
-                                              LP_TEX_LAYOUT_LINEAR);
-
-      if (dst_linear_ptr && src_linear_ptr) {
-         util_copy_rect(dst_linear_ptr, format,
-                        llvmpipe_resource_stride(&dst_tex->base, dst_level),
-                        dstx, dsty,
-                        width, height,
-                        src_linear_ptr,
-                        llvmpipe_resource_stride(&src_tex->base, src_level),
-                        src_box->x, src_box->y);
+      /* copy */
+      {
+         const ubyte *src_linear_ptr
+            = llvmpipe_get_texture_image_address(src_tex, src_box->z + z,
+                                                 src_level,
+                                                 LP_TEX_LAYOUT_LINEAR);
+         ubyte *dst_linear_ptr
+            = llvmpipe_get_texture_image_address(dst_tex, dstz + z,
+                                                 dst_level,
+                                                 LP_TEX_LAYOUT_LINEAR);
+
+         if (dst_linear_ptr && src_linear_ptr) {
+            util_copy_rect(dst_linear_ptr, format,
+                           llvmpipe_resource_stride(&dst_tex->base, dst_level),
+                           dstx, dsty,
+                           width, height,
+                           src_linear_ptr,
+                           llvmpipe_resource_stride(&src_tex->base, src_level),
+                           src_box->x, src_box->y);
+         }
       }
    }
 }