[Mesa-dev] [PATCH 0/5] GLES3 transform feedback fixes.

Ian Romanick idr at freedesktop.org
Fri Dec 14 17:31:41 PST 2012

On 12/14/2012 01:01 PM, Paul Berry wrote:
> Here's a series of loosely-related fixes to transform feedback
> behaviour for GLES3.

The series looks good.  Other than a couple infinitesimal nits,

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

> Patches 1-4 implement a difference between GLES3 and desktop GL: in
> GLES3, transform feedback can only be used with DrawArrays and
> DrawArraysInstanced, and it is supposed to generate an error if there
> is not enough buffer space available to record transform feedback
> outputs.
> Patch 5 fixes a bug that was present for both GLES3 and desktop GL:
> querying GL_TRANSFORM_FEEDBACK_BUFFER_SIZE is supposed to return zero
> if the buffer was bound using a call that didn't specify a size (such
> as glBindBufferBase).
> With these patches (and varying packing, which I landed on master this
> morning), the i965 driver is able to pass all GLES3 transform feedback
> tests except transform_feedback2_pause_resume.test.
> [PATCH 1/5] mesa: Change args to vbo_count_tessellated_primitives.
> [PATCH 2/5] mesa: refactor _mesa_compute_max_transform_feedback_vertices from i965.
> [PATCH 3/5] mesa/gles3: Generate error on DrawElements* calls if transform feedback active.
> [PATCH 4/5] mesa/gles3: Generate error on draw call if transform feedback would overflow.
> [PATCH 5/5] mesa: Fix GL_TRANSFORM_FEEDBACK_BUFFER_SIZE query when glBindBufferBase used.
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