I'm trying to render shapes efficiently in batches, but so far have run into some issues.
- Using GL_TRIANGLE_FAN for rendering a circle breaks when those circles are batched together (bitbucket issue) <https://bitbucket.org/pyglet/pyglet/issues/64> (github code) <https://github.com/numberoverzero/cells/blob/7989ed1a5af0199bf8df96f7293792f2ad127452/shapes.py#L72> . - Rotating individual rectangles when they're batched together (github code) <https://github.com/numberoverzero/cells/blob/7989ed1a5af0199bf8df96f7293792f2ad127452/shapes.py#L142> . I'm working on a few ideas for the first (primarily, a new allocator that can toggle [or mark blocks ineligible for] merging/extending for adjacent alloc/realloc). However, what is the recommended way to handle the latter case? The docs suggest I should batch triangles together for performance, so I'm creating all of my Rectangle instances with GL_TRIANGLE_STRIP (including degenerate vertices) in the same batch. How then do I handle rotating each rectangle individually? Let's say that I have 500 rectangles, all adjusting their rotation by a small random amount every 1/60 of a sec. Is my only choice to re-calculate the vertices and bake the rotation in? I'd love to use glRotatef or something, but that will apply a single rotation to all of my rectangles. This can't be a new problem. Am I missing something obvious? Right now I'm testing with this script <https://github.com/numberoverzero/cells/blob/7989ed1a5af0199bf8df96f7293792f2ad127452/main.py> which generates a bunch of rectangles and rotates them all whenever the mouse is clicked/dragged. I'd expect the framerate to stay higher than the 30-40 I'm getting for 341 rectangles (2046 verts). python -O main.py Python 3.5.0 Ubuntu 14.04 LTS on VMware Workstation 12.0.0 build-2985596 (unlicensed) on Win7 SP1 -- You received this message because you are subscribed to the Google Groups "pyglet-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/pyglet-users. For more options, visit https://groups.google.com/d/optout.
