disable OpenGL extension GL_ARB_texture_compression_bptc After disabling GL_ARB_texture_storage in patch fix_work_on_intel_videocards.patch GL_ARB_texture_compression_bptc feature may work incorrectly with new NVIDIA and AMD video cards. There are no bug reports yet. This patch was made just in case by developer recommendation.
fix work on intel videocards Mesa developers have enabled GL_ARB_texture_storage for all drivers [1], so i915 and i965 drivers now claim the support of this OpenGL extension, but texture storage feature does not actually work there. . [1] http://lists.freedesktop.org/archives/mesa-dev/2013-June/041188.html . This patch is just workaround to make the game work on intel videocards with new Mesa. But real problem should be fixed in Mesa.
