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delete_texture deleted the GL texture but left it in GlCache. GL rebinds units that had the texture to 0, but the cache still recorded it as bound. If a texture created next got the same GL name, bind_texture took it as already bound and skipped glBindTexture, so its upload went to whatever was really bound and the new texture stayed empty. This happens to macroquad's font atlas when it grows right after a flush that ended with text: the new atlas texture is never filled and all text is drawn as black rectangles (not-fl3/macroquad#1006). GlCache::forget_texture resets the cache entries, including the stored binding, that refer to the deleted texture. It makes no GL calls, so bindings of other textures are not touched; this replaces the commented-out clear_texture_bindings() call.
Text could turn into black rectangles when macroquad's font atlas grew right after a render-target pass (not-fl3/macroquad#1006): miniquad's delete_texture left the deleted texture in its binding cache. Vendor miniquad 0.4.11 exactly as published plus one patch (proposed upstream as not-fl3/miniquad#691) and use it through [patch.crates-io]; a script, also run in CI, checks that the copy is the crate plus the patch. Remove the earlier view::end_batch workaround, which made the failure rarer but did not prevent it. docs/UPSTREAM_FIXES.md records the symptom, reproduction, cause, patch, verification and how to drop the copy. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Additional verification on a local Apple M2 Mac: the existing reproduction's text-failure criterion also triggers with the macOS OpenGL backend, and the proposed fix passed the small comparison batch. Environment: MacBook Air (Apple M2, 8 GB RAM), macOS 26.5.2 (25F84), native arm64 release build, rustc 1.99.1, macroquad 0.4.16 and miniquad 0.
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4.11. The program reports Method: Used https://github.com/ricande/miniquad-atlas-repro at
Expected: the white text produces nonzero white-pixel counts throughout all 100 frames. Both failing runs logged: Separate resource failure: A fifth baseline run reported This verifies the reproduction's pixel-based text failure on macOS/Apple M2 and provides supporting evidence for the fix there. The sample is small, atlas packing is randomized without a shared seed between builds, and atlas deletion/name reuse was not separately instrumented in this test. These results do not establish that every report in not-fl3/macroquad#1006 is resolved. |
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Additional WebGL regression coverage for this patch: test sources, instructions and three browser-run logs. On Apple M2 / macOS 26.5.2 / Chrome 155 (ANGLE Metal), both WebGL1 and WebGL2 reproduce a stale-cache restore without any application reuse of a deleted handle: Controls: keeping A alive gives no diagnostic in either variant; deliberately reusing deleted A gives the diagnostic in both. Three rounds of all 12 combinations (36 instances) completed and rendered the live texture correctly with GL error 0. All 12 packaged configurations also rebuilt successfully using committed lockfiles. This is a concrete connection to the diagnostic in #633, not verification that its fatal mobile crash is fixed. No crash occurred here; mobile Safari/Chrome and the reporter's actual scene-transition sequence still need testing. The existing PR is sufficient for the cache path demonstrated here; no additional fix or PR is proposed. |
- Recording no longer waits for ffmpeg: push_frame never blocks; a full, bounded queue stops the encoder with a clear error while the game goes on. ffmpeg processes have time limits, their output is drained, and closing or discarding stops them at once. Ported from RustyHusky, with regression tests for hanging, slow and fast encoders. - Build against miniquad 0.4.11 with the texture-cache fix proposed in not-fl3/miniquad#691 (black text rectangles, not-fl3/macroquad#1006); vendored crate plus patch, checked by a script. - Minimum Rust version 1.87 (was documented as 1.82). - GitHub Actions CI on Linux, Windows and macOS. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Tested on Windows/NVIDIAI reproduced the black text issue in my game using macroquad 0.4.16 and miniquad 0.4.11 on Windows with NVIDIA OpenGL.
I also ran our game's GPU checks at 1080×720. L2 depth comparisons had 0 differing pixels, static-state audits were clean, and scissor checks found no violations with or without the patch. Both builds compiled. The same 12 unrelated desktop tests failed in both versions. The patch fixed every reproduction I tried on this setup. Thanks for the fix! |
delete_texturedeletes the GL texture but leaves it inGlCache. GL rebinds the units that had the texture to 0, but the cache still records it as bound. If the next texture created gets the same GL name,bind_texturetakes it as already bound and skipsglBindTexture, so the upload goes to whatever is really bound and the new texture stays empty.macroquad hits this when its font atlas grows right after a flush that ended with text (for example when switching back from a render-target camera): the new atlas texture is never filled, and all text is drawn as black rectangles from then on. I believe this is the cause of not-fl3/macroquad#1006.
Change
GlCache::forget_textureresets the cache entries, including the stored binding used bystore_texture_binding/restore_texture_binding, that refer to the deleted texture. It makes no GL calls, so the bindings of other textures are not touched. It replaces the commented-out//self.cache.clear_texture_bindings();, which was added in f08f001 as a fix for stale bindings and commented out in 65f1da6. Unlikeclear_texture_bindings(), it does not rebind every unit to 0.Reproduction and verification
Minimal reproduction: https://github.com/ricande/miniquad-atlas-repro (about 100 lines: text drawn into a render target, read back, then into the window, with sizes that make the atlas grow). Results on Linux, Mesa 26.0.8, Intel UHD Graphics 630, macroquad 0.4.16, miniquad 0.4.11 (
src/graphics/gl.rsandsrc/graphics/gl/cache.rsare the same on master), 100 frames per run:With logging added to macroquad's
Atlas::texture, the new atlas texture always got the same GL name as the old one, and without the change the text turned black in exactly the runs where the atlas was deleted while GL had it bound (5 of 8 runs) and in none of the others. With the change, 3 of the 12 instrumented runs deleted the atlas while it was bound, and none failed.This was verified on that one machine only; I have not been able to check the other reports in not-fl3/macroquad#1006 (other GPUs and systems). Related, but not verified here: #633 (binding an already deleted texture) involves the same stale cache entries.