https://bugs.freedesktop.org/show_bug.cgi?id=28585
Summary: glVertexAttrib doesn't seem to work on the GLES 2
driver
Product: Mesa
Version: git
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Other
AssignedTo: mesa-dev@lists.freedesktop.org
ReportedBy: n...@linux.intel.com
Created an attachment (id=36339)
--> (https://bugs.freedesktop.org/attachment.cgi?id=36339)
Test case
Using glVertexAttrib4f (or similar) to set a default vertex attrib value
doesn't seem to work on the Mesa GLES 2 driver. Using glVertexAttribPointer to
set an array value for the attribute for each vertex however seems to work
fine.
The attached test case tries to draw a red rectangle using a simple shader. The
color is specified using a vertex attribute. For me the rectangle comes out
black instead. If you change the #if 0 to #if 1 it will use
glVertexAttribPointer instead and it seems to work.
This is tested on my i965 with Mesa git 118a476. I can't test with any later
commit because Mesa just gives an assert for all programs after that (but I
guess that's a separate issue).
This causes Clutter to display text in black when the string is long enough to
use a VBO instead of going through the journal (such as in text-text).
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