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ba1d24f06a
The checks to determine when the data can be uploaded in an interleaved
fashion can be tricked by certain data layouts. For example,
float data[...];
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 16, &data[0]);
glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, 16, &data[4]);
glDrawArrays(GL_POINTS, 0, 1);
will hit the interleaved path with an incorrect size (16 bytes instead
of 32 bytes). As a result, the data for attribute 1 never gets
uploaded. The single element draw case is the only sensible case I can
think of for non-interleaved-that-looks-like-interleaved data, but there
may be others as well.
To fix this, make sure that the end of the element in the array being
checked is within the stride "window." Previously the code would check
that the begining of the element was within the window.
NOTE: This is a candidate for stable branches.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit
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| doxygen | ||
| include | ||
| m4 | ||
| scons | ||
| src | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| Android.common.mk | ||
| Android.mk | ||
| autogen.sh | ||
| common.py | ||
| configure.ac | ||
| Makefile.am | ||
| SConstruct | ||
File: docs/README.WIN32 Last updated: 23 April 2011 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons osmesa mesagdi to build classic mesa Windows GDI drivers; or scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.