d98ff2cc4a
If a program does two blits in a row, we internally do a sequence of
operations that involves binding vb0.
Previously, the vb0 state after each operation would look something like:
| operation | cmd->state.gfx.vb0 | hardware | save->vb0 |
| ---------------------------- | ------------------ | --------- | --------- |
| | user | user | |
| nvk_meta_begin() | user | user | user |
| BindVertexBuffers(internal0) | internal0 | internal0 | user |
| nvk_meta_end() | internal0 | user | |
| nvk_meta_begin() | internal0 | user | internal0 |
| BindVertexBuffers(internal1) | internal1 | internal1 | internal0 |
| nvk_meta_end() | internal1 | internal0 | |
That is, CmdBindVertexBuffers() would update cmd->state.gfx.vb0, but
nvk_meta_end() would not. This meant that the last operation would bind a
driver-internal buffer instead of the original value that the user set.
This change fixes the issue by tracking cmd->state.gfx.vb0 in
nvk_cmd_bind_vertex_buffer(), which both CmdBindVertexBuffers() and
nvk_meta_end() call into.
After this commit, the state looks like:
| operation | cmd->state.gfx.vb0 | hardware | save->vb0 |
| ---------------------------- | ------------------ | --------- | --------- |
| | user | user | |
| nvk_meta_begin() | user | user | user |
| BindVertexBuffers(internal0) | internal0 | internal0 | user |
| nvk_meta_end() | user | user | |
| nvk_meta_begin() | user | user | user |
| BindVertexBuffers(internal1) | internal1 | internal1 | user |
| nvk_meta_end() | user | user | |
To test this commit, build gtk4 commit 87b66de1, run:
GSK_RENDERER=vulkan gtk4-demo --run=image_scaling
then select trilinear filtering in the dropdown and check for rendering
artifacts.
Fixes: e1c66501 ("nvk: Use vk_meta for CmdClearAttachments")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27559>
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