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Route RTT region readbacks through backend

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omigamedev
2026-06-04 21:01:13 +02:00
parent b9dbcd10d7
commit 15c58bfb21
8 changed files with 86 additions and 58 deletions
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19
docs/modernization/build-inventory.md
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@@ -290,7 +290,9 @@ Known local toolchain state:
allocation/storage/delete and framebuffer depth attach/detach also execute
through tested dispatch contracts here. Renderer API render-pass color/depth/stencil
clear-mask and clear-value mapping, and color-write-mask query tokens. `RTT` no longer
spells GL enum names directly. It also
spells GL enum names directly. `RTT` also exposes a retained RGBA8
region-readback helper that uses the tested framebuffer readback dispatch for
canvas pick/history/snapshot and transform history paths. It also
validates renderer API primitive-topology to OpenGL draw-mode mapping, Shape
index-type, fill/stroke primitive-mode, buffer target, static upload usage,
and vertex attribute component/normalization mapping used by
@@ -410,12 +412,14 @@ Known local toolchain state:
formats for cube-strip imports. Clamp-to-border sampler wrap is now part of
the backend capability catalog and test coverage.
Early canvas draw helpers also consume backend-owned pick readback
format/type, stroke mixer depth/scissor/blend state, saved viewport and
clear-state queries, active texture units, fallback 2D texture unbind
targets, and stroke background copy targets.
format/type and RTT-backed region-readback execution, stroke mixer
depth/scissor/blend state, saved viewport and clear-state queries, active
texture units, fallback 2D texture unbind targets, and stroke background copy
targets.
Canvas stroke commit also consumes backend-owned saved viewport/clear/blend
state, history readback format/type, active texture units, fallback 2D
texture unbind targets, and layer compositing copy targets.
state, history readback format/type and RTT-backed region-readback execution,
active texture units, fallback 2D texture unbind targets, and layer
compositing copy targets.
Canvas layer merge rendering and explicit layer-merge compositing also consume
backend-owned depth/blend state, active texture units, fallback 2D texture
unbind targets, and merge framebuffer copy targets.
@@ -610,7 +614,8 @@ Known local toolchain state:
VR draw state setup and restore, tested saved-state snapshot/restore dispatch
consumed by the retained `gl_state` utility, tested texture lifecycle/readback dispatch consumed by
the retained `Texture2D` utility, tested framebuffer blit/readback dispatch
consumed by retained `RTT` resize/copy/readback paths, tested framebuffer
consumed by retained `RTT` resize/copy/readback and RGBA8 region-readback
paths, tested framebuffer
bind/restore dispatch consumed by retained `RTT` render-target pass entry
and exit paths, tested depth renderbuffer allocation/delete and framebuffer
depth attach/detach dispatch consumed by canvas object-drawing helpers,