Mesa (master): gallium: new transfer flag: DISCARD_WHOLE_RESOURCE
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Tue Feb 22 14:27:54 UTC 2011
Module: Mesa
Branch: master
Commit: fad8497d3b1cead6f0a5056deaa49350ed4e4d41
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=fad8497d3b1cead6f0a5056deaa49350ed4e4d41
Author: Keith Whitwell <keithw at vmware.com>
Date: Wed Jan 5 17:33:43 2011 +0000
gallium: new transfer flag: DISCARD_WHOLE_RESOURCE
---
src/gallium/include/pipe/p_defines.h | 21 ++++++++++++++++++---
1 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index f66bbaf..8b56552 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -229,9 +229,9 @@ enum pipe_transfer_usage {
*
* See also:
* - OpenGL's ARB_map_buffer_range extension, MAP_INVALIDATE_RANGE_BIT flag.
- * - Direct3D's D3DLOCK_DISCARD flag.
*/
- PIPE_TRANSFER_DISCARD = (1 << 8),
+ PIPE_TRANSFER_DISCARD = (1 << 8), /* DEPRECATED */
+ PIPE_TRANSFER_DISCARD_RANGE = (1 << 8),
/**
* Fail if the resource cannot be mapped immediately.
@@ -266,7 +266,22 @@ enum pipe_transfer_usage {
* - pipe_context::transfer_flush_region
* - OpenGL's ARB_map_buffer_range extension, MAP_FLUSH_EXPLICIT_BIT flag.
*/
- PIPE_TRANSFER_FLUSH_EXPLICIT = (1 << 11)
+ PIPE_TRANSFER_FLUSH_EXPLICIT = (1 << 11),
+
+ /**
+ * Discards all memory backing the resource.
+ *
+ * It should not be used with PIPE_TRANSFER_CPU_READ.
+ *
+ * This is equivalent to:
+ * - OpenGL's ARB_map_buffer_range extension, MAP_INVALIDATE_BUFFER_BIT
+ * - BufferData(NULL) on a GL buffer
+ * - Direct3D's D3DLOCK_DISCARD flag.
+ * - WDDM's D3DDDICB_LOCKFLAGS.Discard flag.
+ * - D3D10 DDI's D3D10_DDI_MAP_WRITE_DISCARD flag
+ * - D3D10's D3D10_MAP_WRITE_DISCARD flag.
+ */
+ PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE = (1 << 12)
};
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