gpu: Support ES3 msaa and depth/stencil formats

gpu/config/gpu_driver_bug_workaround_type.h

Index: gpu/config/gpu_driver_bug_workaround_type.h
diff --git a/gpu/config/gpu_driver_bug_workaround_type.h b/gpu/config/gpu_driver_bug_workaround_type.h
index 872793c9b8ea0118163c384da640c8e14ff2c5fd..2d7a2181ec408928efa51ebdd66af4638d1b13f4 100644
--- a/gpu/config/gpu_driver_bug_workaround_type.h
+++ b/gpu/config/gpu_driver_bug_workaround_type.h
@@ -30,6 +30,8 @@
          disable_ext_draw_buffers)                           \
   GPU_OP(DISABLE_EXT_OCCLUSION_QUERY,                        \
          disable_ext_occlusion_query)                        \
+  GPU_OP(DISABLE_FRAMEBUFFER_MULTISAMPLE,                    \
+         disable_framebuffer_multisample)                    \

[Zhenyao Mo, 2013/11/14 01:38:11]

I think we should combine this and the disable_angle_framebuffer_multisample
into one.

[no sievers, 2013/11/14 01:51:28]

The problem is that the exact same vendor somehow incorrectly advertised
GL_ANGLE_framebuffer_multisample, see id 15 :)

Alex says he remembers it was only on specific devices (not qC drivers in
general). So it might also have been some OEM who accidentally added it or so.
It's hard to verify if it won't still be advertised on some QC ES3 driver, which
would be a problem once the other bugs are fixed.

Do you mind keeping both, one disabling the specific extension, the other one
disabling multisampling in general?

I can also rename it to disable_es3_framebuffer_multisample or so, but not sure
that it makes things better.

[Zhenyao Mo, 2013/11/14 02:04:20]

Are we allowing GL_ANGLE_framebuffer_multisample if it's not ANGLE backend?  If
not, then we don't need both names.  If yes, then we can keep both names.

   GPU_OP(DISABLE_MULTIMONITOR_MULTISAMPLING,                 \
          disable_multimonitor_multisampling)                 \
   GPU_OP(DISABLE_OES_STANDARD_DERIVATIVES,                   \