Mesa (mesa_7_7_branch): svga: Temporarily create a sw vertex buf when failed to create a hw buf.
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Thu Feb 18 18:22:37 UTC 2010
Module: Mesa
Branch: mesa_7_7_branch
Commit: 770945cff48bef2d0552aba39ee0fd7b8740dc14
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=770945cff48bef2d0552aba39ee0fd7b8740dc14
Author: José Fonseca <jfonseca at vmware.com>
Date: Thu Feb 18 18:11:50 2010 +0000
svga: Temporarily create a sw vertex buf when failed to create a hw buf.
Many apps don't check the return of map buffer so it is better not to
fail.
---
src/gallium/drivers/svga/svga_screen_buffer.c | 27 ++++++++++++++++++------
1 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/src/gallium/drivers/svga/svga_screen_buffer.c b/src/gallium/drivers/svga/svga_screen_buffer.c
index cb4de42..a4db1d9 100644
--- a/src/gallium/drivers/svga/svga_screen_buffer.c
+++ b/src/gallium/drivers/svga/svga_screen_buffer.c
@@ -409,18 +409,31 @@ svga_buffer_map_range( struct pipe_screen *screen,
struct svga_buffer *sbuf = svga_buffer( buf );
void *map;
- if(sbuf->swbuf) {
+ if (!sbuf->swbuf && !sbuf->hw.buf) {
+ if (svga_buffer_create_hw_storage(ss, sbuf) != PIPE_OK) {
+ /*
+ * We can't create a hardware buffer big enough, so create a malloc
+ * buffer instead.
+ */
+
+ debug_printf("%s: failed to allocate %u KB of DMA, splitting DMA transfers\n",
+ __FUNCTION__,
+ (sbuf->base.size + 1023)/1024);
+
+ sbuf->swbuf = align_malloc(sbuf->base.size, sbuf->base.alignment);
+ }
+ }
+
+ if (sbuf->swbuf) {
/* User/malloc buffer */
map = sbuf->swbuf;
}
- else {
- if(!sbuf->hw.buf) {
- if(svga_buffer_create_hw_storage(ss, sbuf) != PIPE_OK)
- return NULL;
- }
-
+ else if (sbuf->hw.buf) {
map = sws->buffer_map(sws, sbuf->hw.buf, usage);
}
+ else {
+ map = NULL;
+ }
if(map) {
pipe_mutex_lock(ss->swc_mutex);
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