307316 2026-02-09 00:08:59 -0800 [WebGL] Prevent READ_FRAMEBUFFER operations from corrupting DRAW_FRAMEBUFFER state 2026-02-10 19:12:05 -0800 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 roberto_rodriguez2 webkit-unassigned webkit-bug-importer oldest_to_newest 2179353 0 roberto_rodriguez2 2026-02-09 00:08:59 -0800 rdar://169621664 Calling framebufferTexture2D() on READ_FRAMEBUFFER was unexpectedly modifying DRAW_FRAMEBUFFER state. The issue was that drawBuffersIfNecessary() unconditionally called glDrawBuffers(), which always targets DRAW_FRAMEBUFFER - so modifying one framebuffer's attachments would corrupt whatever was bound to DRAW_FRAMEBUFFER. Fix by deferring the glDrawBuffers() call: when attachments change while bound to READ_FRAMEBUFFER, record that sync is needed and perform it when the framebuffer is later bound to DRAW_FRAMEBUFFER. 2179355 1 roberto_rodriguez2 2026-02-09 00:13:06 -0800 Pull request: https://github.com/WebKit/WebKit/pull/58181 2180131 2 ews-feeder 2026-02-10 19:12:03 -0800 Committed 307223@main (45661a525863): <https://commits.webkit.org/307223@main> Reviewed commits have been landed. Closing PR #58181 and removing active labels.