Mesa (master): mesa: add UseSTD430AsDefaultPacking constant
Timothy Arceri
tarceri at kemper.freedesktop.org
Tue Aug 22 01:41:07 UTC 2017
Module: Mesa
Branch: master
Commit: 334a27afa75d31af40b265219ba504cbb8c81255
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=334a27afa75d31af40b265219ba504cbb8c81255
Author: Timothy Arceri <tarceri at itsqueeze.com>
Date: Sun Jul 23 11:26:55 2017 +1000
mesa: add UseSTD430AsDefaultPacking constant
This will be used to enable the STD430 layout as the default for
UBOs and SSBOs with layouts of shared/packed rather than STD140.
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
---
src/mesa/main/mtypes.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 74392f8f1f..592cb48ca3 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -3844,6 +3844,15 @@ struct gl_constants
GLboolean DisableVaryingPacking;
/**
+ * UBOs and SSBOs can be packed tightly by the OpenGL implementation when
+ * layout is set as shared (the default) or packed. However most Mesa drivers
+ * just use STD140 for these layouts. This flag allows drivers to use STD430
+ * for packed and shared layouts which allows arrays to be packed more
+ * tightly.
+ */
+ bool UseSTD430AsDefaultPacking;
+
+ /**
* Should meaningful names be generated for compiler temporary variables?
*
* Generally, it is not useful to have the compiler generate "meaningful"
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