Mike Blumenkrantz e7b9561959 gallium: implement compute pbo download ... this reworks PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER into an enum as PIPE_CAP_TEXTURE_TRANSFER_MODES, enabling drivers to choose a (sometimes) faster, compute-based download mechanism based on a new pipe_screen hook compute pbo download is implemented using shaders with a prolog to convert the input format to generic rgb float values, then an epilog to convert to the output value. the prolog and epilog are determined based on a vec4 of packed ubo data which is dynamically updated based on the API usage currently, the only known limitations are: * GL_ARB_texture_cube_map_array is broken somehow (and disabled) * AMD hardware somehow can't do depth readback? otherwise it should work for every possible case Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Acked-by: Marek Olšák <marek.olsak@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11984>		2021-11-18 08:00:07 -05:00
..
cso	gallium: add rasterizer depth_clamp enable bit	2021-09-09 18:29:26 +00:00
buffermapping.rst	docs: fix invalid rst	2021-04-01 08:15:08 +00:00
context.rst	gallium: remove vertices_per_patch, add pipe_context::set_patch_vertices	2021-08-21 00:08:11 +00:00
cso.rst	merge gallium docs into main docs	2020-07-07 10:22:08 +00:00
debugging.rst	gallium: when tracing is enabled for threaded drivers, trace the driver thread	2021-04-21 14:28:44 +00:00
distro.rst	merge gallium docs into main docs	2020-07-07 10:22:08 +00:00
format.rst	docs/gallium: Document the index buffer format convention	2021-06-01 23:40:47 +00:00
glossary.rst	merge gallium docs into main docs	2020-07-07 10:22:08 +00:00
index.rst	docs: Add some documentation of game GL buffer object mapping behavior.	2021-03-09 09:24:23 -08:00
intro.rst	merge gallium docs into main docs	2020-07-07 10:22:08 +00:00
pipeline.txt	merge gallium docs into main docs	2020-07-07 10:22:08 +00:00
postprocess.rst	docs: move gallium specific docs into gallium folder	2020-07-07 10:22:08 +00:00
resources.rst	merge gallium docs into main docs	2020-07-07 10:22:08 +00:00
screen.rst	gallium: implement compute pbo download	2021-11-18 08:00:07 -05:00
tgsi.rst	gallium/tgsi: rip out cylindrical wrap support	2021-08-25 19:37:16 +00:00