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Quakesysmgr - #223
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Quakesysmgr#223
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The X server draws a double-buffered 24-bit window (System Manager's panes) with PP1 draw field 4 for its back buffer and 5 for both, the way GL's 24-bit visuals do, and swaps with XMAP BUF_SELECT. The raster engine took only 2 for B and 3 for both, so field 4 drew over the front buffer in page A and page B kept whatever was there: Quake's last frame showed in System Manager's panes after it exited (sysmgr.log). Both the interpreter and the raster JIT now treat 4 as B and 5 as A and B. Co-Authored-By: Claude Opus 5.5 <[email protected]>
switch_to_gl_context waited for flag bit 6 without clearing it, so after the first switch the wait returned at once. gl_readback_flag_follows_the_ context then cleared the readback flag before the HQ thread had switched to context B, clearing A's flag instead (failed on CI: "A's flag is back"). Clear bit 6 before queueing each switch. Co-Authored-By: Claude Opus 5.5 <[email protected]>
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fix issue #214