The series adds support for i965 driver to sample YUV420, NV12 and YV12 formatted buffers originating outside the GL-stack. There is only support for the fragment shaders for now (even though one prepares for vertex shaders also).
In a summary, the relation between a mesa core maintained sampler and i965 hw-surface bookkeeping is extended to support more than one surface per sampler. Perhaps it would be more sensible to extend the required texture image units in the core to support multiple units instead. (This would mean splitting a native buffer into multiple images, one per plane). I thought against this as some drivers may be capable of handling multiples planes as one logical image. I don't really have a strong take way or the other. The approach I've taken here can at least serve as the starting point for agreeing on proper solution. The second more or less questionable part is the support for creating YUV buffers. In order to test for YUV sampling one needs a way of providing them for the EGL stack. Here I chose to augment the dri driver backing gbm as I couldn't come up with anything better. It may be helpful to take a look at the corresponding piglit test case and framework support I've written for it. Finally there is the logic for the fragment shader compiler backend to generate code for sampling multiple planes instead of just one and to convert the YUV data into RGB. There used to exist similar logic for rectangle extension and I have taken quite a lot of ideas from there. Topi Pohjolainen (13): i965: extend FS sampler to surface relation to 1:N i965: extend VS sampler to surface relation to 1:N intel: support for creating planar external image textures i965: support for reserving surfaces for planar textures i965: re-compile shader if external texture unit changes intel: treat mip-tree as constant when resolving offsets i965: refactor sampling engine surface state setup i965: support for setting surfaces for planar external intel: refactor planar format lookup dri: introduce YVU420 (YV12) gbm: dri: support for creating YUV formatted buffers i965: support for YUV formatted external textures i965: enable image external textures include/GL/internal/dri_interface.h | 1 + src/gbm/backends/dri/gbm_dri.c | 9 + src/mesa/drivers/dri/i965/Makefile.sources | 1 + src/mesa/drivers/dri/i965/brw_context.h | 37 ++- src/mesa/drivers/dri/i965/brw_fs.h | 2 + src/mesa/drivers/dri/i965/brw_fs_emit.cpp | 3 +- src/mesa/drivers/dri/i965/brw_fs_ext_texture.cpp | 274 +++++++++++++++++++++ src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 5 + src/mesa/drivers/dri/i965/brw_program.h | 6 + src/mesa/drivers/dri/i965/brw_vs.c | 30 +++ src/mesa/drivers/dri/i965/brw_wm.c | 37 +++ src/mesa/drivers/dri/i965/brw_wm_surface_state.c | 141 +++++++---- src/mesa/drivers/dri/i965/gen7_wm_surface_state.c | 160 +++++++----- src/mesa/drivers/dri/intel/intel_extensions.c | 1 + src/mesa/drivers/dri/intel/intel_mipmap_tree.c | 4 +- src/mesa/drivers/dri/intel/intel_mipmap_tree.h | 2 +- src/mesa/drivers/dri/intel/intel_regions.c | 66 ++++- src/mesa/drivers/dri/intel/intel_regions.h | 8 +- src/mesa/drivers/dri/intel/intel_screen.c | 49 +++- src/mesa/drivers/dri/intel/intel_tex_image.c | 21 ++ src/mesa/drivers/dri/intel/intel_tex_obj.h | 37 +++ 21 files changed, 774 insertions(+), 120 deletions(-) create mode 100644 src/mesa/drivers/dri/i965/brw_fs_ext_texture.cpp -- 1.7.9.5 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
