Am 2014-09-25 08:27, schrieb Michel Dänzer:
From: Michel Dänzer <[email protected]>
Otherwise the CPU may end up reading from non-cacheable memory, which
is
very slow.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84178
Signed-off-by: Michel Dänzer <[email protected]>
---
Keeping gl_usage in case we need to add back GLAMOR_ACCESS_WO.
glamor/glamor_prepare.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/glamor/glamor_prepare.c b/glamor/glamor_prepare.c
index 561c55d..fb85d90 100644
--- a/glamor/glamor_prepare.c
+++ b/glamor/glamor_prepare.c
@@ -84,10 +84,7 @@ glamor_prep_pixmap_box(PixmapPtr pixmap,
glamor_access_t access, BoxPtr box)
if (priv->base.pbo == 0)
glGenBuffers(1, &priv->base.pbo);
- if (access == GLAMOR_ACCESS_RW)
- gl_usage = GL_DYNAMIC_DRAW;
- else
- gl_usage = GL_STREAM_READ;
+ gl_usage = GL_STREAM_READ;
glBindBuffer(GL_PIXEL_PACK_BUFFER, priv->base.pbo);
glBufferData(GL_PIXEL_PACK_BUFFER,
Was the write only patch merged? If so, this should be changed to use
GL_STREAM_DRAW for WO.
But you're right, for RW, it should be STREAM (used once) READ (accessed
by the CPU), so
Reviewed-by: Markus Wick <[email protected]>
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