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Route PBO readbacks through GL backend

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omigamedev
2026-06-04 21:29:49 +02:00
parent 45802dfc7c
commit fc20851462
7 changed files with 523 additions and 46 deletions
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11
docs/modernization/roadmap.md
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@@ -814,6 +814,10 @@ Legacy `RTT` also exposes an RGBA8 region-readback helper that uses the same
backend framebuffer readback dispatch; canvas pick/history/snapshot and
transform history paths now call that helper instead of binding an RTT and
calling `glReadPixels` directly.
Retained `PBO` recording readbacks now route pixel-buffer allocation,
framebuffer readback, map, unmap, and deletion through tested
`pp_renderer_gl` dispatch helpers; recording thread ownership, progress UI, and
MP4 execution remain tracked by DEBT-0037.
Legacy `RTT::bindFramebuffer` and `RTT::unbindFramebuffer` now use tested
`pp_renderer_gl` draw/read framebuffer binding snapshot and restore contracts,
moving render-target pass entry/exit state management behind the backend.
@@ -995,9 +999,10 @@ for future backend texture objects. `Texture2D` 2D texture binding, upload,
mipmap generation, framebuffer readback setup, and update component-type tokens
now delegate to `pp_renderer_gl`. `TextureCube` cube-map binding, allocation
face targets, RGBA allocation format, and unsigned-byte component type also
delegate to `pp_renderer_gl`. RGBA8/RGBA32F readback formats, checked byte-count math, and PBO
pixel-buffer target/usage/access tokens used by `RTT` and `PBO` readbacks now
live in `pp_renderer_gl`. The framebuffer blit color mask and linear/nearest
delegate to `pp_renderer_gl`. RGBA8/RGBA32F readback formats, checked byte-count math, PBO
pixel-buffer target/usage/access tokens, and PBO allocation/readback/map/unmap/delete
dispatch sequences used by retained recording readbacks now live in
`pp_renderer_gl`. The framebuffer blit color mask and linear/nearest
filter tokens used by `RTT::resize` and `RTT::copy`, renderer API blit-filter
to OpenGL token mapping, plus the default
render-target texture parameters, texture/renderbuffer targets, depth format,