Repository navigation
Rendering into a packed mip tail without a resident image aborts (Wobbly Life PPSA29413) #4070
Description
What
While streaming tutorial content, a draw renders into a packed mip tail of a surface that took the non-resident target path, and the fallback has no tail handling:
[src/Texture.cpp:260 Texture] mip 64x64 tiled=0x0+0x10000 linear=0x160000+0x8000 blocksPerRow=1 pitch=512 tail=1
[src/Texture.cpp:260 Texture] mip 32x32 tiled=0x0+0x10000 linear=0x168000+0x4000 blocksPerRow=1 pitch=512 tail=1
[src/Texture.cpp:260 Texture] mip 16x16 tiled=0x0+0x10000 linear=0x16c000+0x2000 blocksPerRow=1 pitch=512 tail=1
[src/Texture.cpp:260 Texture] mip 8x8 tiled=0x0+0x10000 linear=0x16e000+0x1000 blocksPerRow=1 pitch=512 tail=1
[src/Texture.cpp:260 Texture] mip 4x4 tiled=0x0+0x10000 linear=0x16f000+0x800 blocksPerRow=1 pitch=512 tail=1
[src/Texture.cpp:260 Texture] mip 2x2 tiled=0x0+0x10000 linear=0x16f800+0x400 blocksPerRow=1 pitch=512 tail=1
[src/Texture.cpp:260 Texture] mip 1x1 tiled=0x0+0x10000 linear=0x16fc00+0x200 blocksPerRow=1 pitch=512 tail=1
[gpu] color target 0x281490000 stays non-resident: AGC graphics: storage image access to depth/stencil surface 0x281490000 is not implemented
[videoout] presentation failed: AGC graphics: rendering into a packed mip tail needs the resident image of its surface
terminate called after throwing an instance of 'std::runtime_error'
what(): AGC graphics: rendering into a packed mip tail needs the resident image of its surface
Reading of the log: the resident-image route is skipped because storage-image access to a depth/stencil surface is not implemented, so the target stays non-resident; the staging fallback (Draw.cpp) then throws on the packed tail. Its two neighbors (3D targets and XOR array slices, same file) are the same class of gap: exotic layouts are only supported through the resident path.
Repro
Wobbly Life (PPSA29413, Unity 2022.3) on Linux (CachyOS), GCC 16.2.1, Intel i5-12400 + NVIDIA RTX 3060 Ti (615.71.09), current main 31bf997, stock build plus relink. Boot the title into the tutorial area. Flaky: 2 of 5 consecutive runs stop here (675-697 file opens in); the other 3 stop at the sample-locations wall (#2169) in the same area. No select, MSAA-8x, device-loss, or Guid failures in any run. Bring-up thread: #2211.
Already in tree, not covering it
- feat(agc): multisampled color and depth targets with CB resolves #419 (standard 8x MSAA targets, merged; this abort is past it)
- feat(agc): support uniform custom MSAA sample locations #2169 (custom sample locations, merged; the neighboring wall)
- feat(agc): mipmapped 3D textures #394, fix(agc): use gfx1013's smaller mip tail limits for 8 and 16 bpp SW_64KB_Z_X #1639 (mip tail layout/limits, merged; layout only, not fallback rendering)
AI-assisted: yes
Activity