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1fece5fa5f
When the resource to be mapped is busy and the backing storage can
be discarded, reallocate the backing storage to avoid waiting.
In this new path, we allocate a new buffer, emit a state change,
write, and add the transfer to the queue . In the
PIPE_TRANSFER_DISCARD_RANGE path, we suballocate a staging buffer,
write, and emit a copy_transfer (which may allocate, memcpy, and
blit internally). The win might not always be clear. But another
win comes from that the new path clears res->valid_buffer_range and
does not clear res->clean_mask. This makes it much more preferable
in scenarios such as
access = enough_space ? GL_MAP_UNSYNCHRONIZED_BIT :
GL_MAP_INVALIDATE_BUFFER_BIT;
glMapBufferRange(..., GL_MAP_WRITE_BIT | access);
memcpy(...); // append new data
glUnmapBuffer(...);
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
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| broadcom | ||
| compiler | ||
| egl | ||
| etnaviv | ||
| freedreno | ||
| gallium | ||
| gbm | ||
| getopt | ||
| glx | ||
| gtest | ||
| hgl | ||
| imgui | ||
| intel | ||
| loader | ||
| mapi | ||
| mesa | ||
| util | ||
| vulkan | ||
| meson.build | ||
| SConscript | ||