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authorKeith Whitwell <keithw@vmware.com>2010-11-02 16:29:10 +0000
committerKeith Whitwell <keithw@vmware.com>2010-11-02 16:57:24 +0000
commit8dfafbf0861fe3d2542332658dd5493851053c78 (patch)
treee6adb0bb2cd6f965b25a64c8d5d22234121b031b /src/gallium/drivers/nv50/nv50_shader_state.c
parentdebcb434891756573ed2dc102ad1b673a8dce7da (diff)
st/mesa: unbind constant buffer when not in use
Important as more constant buffers per shader start to get used. Fix up r600 (tested) and nv50 (untested) to cope with this. Drivers previously didn't see unbinds of constant buffers often or ever, so this isn't always dealt with cleanly. For r600 just return and keep the reference. Will try to do better in a followup change.
Diffstat (limited to 'src/gallium/drivers/nv50/nv50_shader_state.c')
-rw-r--r--src/gallium/drivers/nv50/nv50_shader_state.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv50/nv50_shader_state.c b/src/gallium/drivers/nv50/nv50_shader_state.c
index 6c41e8f456..306aa81d98 100644
--- a/src/gallium/drivers/nv50/nv50_shader_state.c
+++ b/src/gallium/drivers/nv50/nv50_shader_state.c
@@ -39,6 +39,9 @@ nv50_transfer_constbuf(struct nv50_context *nv50,
uint32_t *map;
unsigned count, start;
+ if (buf == NULL)
+ return;
+
map = pipe_buffer_map(pipe, buf, PIPE_TRANSFER_READ, &transfer);
if (!map)
return;