[Mesa-dev] [PATCH 3/4] llvmpipe: implement the new legal_resource_size() function
Brian Paul
brian.e.paul at gmail.com
Sun Sep 16 18:53:55 PDT 2012
From: Brian Paul <brianp at vmware.com>
---
src/gallium/drivers/llvmpipe/lp_texture.c | 28 +++++++++++++++++++++++-----
1 files changed, 23 insertions(+), 5 deletions(-)
diff --git a/src/gallium/drivers/llvmpipe/lp_texture.c b/src/gallium/drivers/llvmpipe/lp_texture.c
index 924881c..1b2a8df 100644
--- a/src/gallium/drivers/llvmpipe/lp_texture.c
+++ b/src/gallium/drivers/llvmpipe/lp_texture.c
@@ -105,7 +105,8 @@ alloc_layout_array(unsigned num_slices, unsigned width, unsigned height)
*/
static boolean
llvmpipe_texture_layout(struct llvmpipe_screen *screen,
- struct llvmpipe_resource *lpr)
+ struct llvmpipe_resource *lpr,
+ boolean allocate)
{
struct pipe_resource *pt = &lpr->base;
unsigned level;
@@ -163,9 +164,11 @@ llvmpipe_texture_layout(struct llvmpipe_screen *screen,
lpr->num_slices_faces[level] = num_slices;
- lpr->layout[level] = alloc_layout_array(num_slices, width, height);
- if (!lpr->layout[level]) {
- goto fail;
+ if (allocate) {
+ lpr->layout[level] = alloc_layout_array(num_slices, width, height);
+ if (!lpr->layout[level]) {
+ goto fail;
+ }
}
}
@@ -191,6 +194,20 @@ fail:
}
+/**
+ * Check the size of the texture specified by 'res'.
+ * \return TRUE if OK, FALSE if too large.
+ */
+static boolean
+llvmpipe_legal_resource_size(struct pipe_screen *screen,
+ const struct pipe_resource *res)
+{
+ struct llvmpipe_resource lpr;
+ memset(&lpr, 0, sizeof(lpr));
+ lpr.base = *res;
+ return llvmpipe_texture_layout(llvmpipe_screen(screen), &lpr, FALSE);
+}
+
static boolean
llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
@@ -264,7 +281,7 @@ llvmpipe_resource_create(struct pipe_screen *_screen,
}
else {
/* texture map */
- if (!llvmpipe_texture_layout(screen, lpr))
+ if (!llvmpipe_texture_layout(screen, lpr, TRUE))
goto fail;
assert(lpr->layout[0][0] == LP_TEX_LAYOUT_NONE);
}
@@ -1436,6 +1453,7 @@ llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen)
screen->resource_destroy = llvmpipe_resource_destroy;
screen->resource_from_handle = llvmpipe_resource_from_handle;
screen->resource_get_handle = llvmpipe_resource_get_handle;
+ screen->legal_resource_size = llvmpipe_legal_resource_size;
}
--
1.7.4.1
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