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llvmpipe: clear storage for newly allocated resources 

Was previously being done in a state-tracker, but in a way which was
difficult for some drivers to optimize.  Push down to this level and
make it the individual drivers responsibility.
This commit is contained in:
Keith Whitwell 2010-12-22 14:04:42 +00:00 committed by José Fonseca
parent 87b4c9b322
commit 9a1fd9a37c
1 changed files with 20 additions and 2 deletions
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22
src/gallium/drivers/llvmpipe/lp_texture.c
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@ -219,7 +219,20 @@ llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
16,
&lpr->row_stride[0] );
return lpr->dt != NULL;
if (lpr->dt == NULL)
return FALSE;
{
void *map = winsys->displaytarget_map(winsys, lpr->dt,
PIPE_TRANSFER_WRITE);
if (map)
memset(map, 0, height * lpr->row_stride[0]);
winsys->displaytarget_unmap(winsys, lpr->dt);
}
return TRUE;
}
@ -265,6 +278,7 @@ llvmpipe_resource_create(struct pipe_screen *_screen,
lpr->data = align_malloc(bytes, 16);
if (!lpr->data)
goto fail;
memset(lpr->data, 0, bytes);
}
lpr->id = id_counter++;
@ -964,11 +978,14 @@ alloc_image_data(struct llvmpipe_resource *lpr, unsigned level,
/* tiled data is stored in regular memory */
uint buffer_size = tex_image_size(lpr, level, layout);
lpr->tiled[level].data = align_malloc(buffer_size, alignment);
memset(lpr->tiled[level].data, 0, buffer_size);
}
else {
assert(layout == LP_TEX_LAYOUT_LINEAR);
if (lpr->dt) {
/* we get the linear memory from the winsys */
/* we get the linear memory from the winsys, and it has
* already been zeroed
*/
struct llvmpipe_screen *screen = llvmpipe_screen(lpr->base.screen);
struct sw_winsys *winsys = screen->winsys;
@ -980,6 +997,7 @@ alloc_image_data(struct llvmpipe_resource *lpr, unsigned level,
/* not a display target - allocate regular memory */
uint buffer_size = tex_image_size(lpr, level, LP_TEX_LAYOUT_LINEAR);
lpr->linear[level].data = align_malloc(buffer_size, alignment);
memset(lpr->linear[level].data, 0, buffer_size);
}
}
}