Add RGBA64 texture cpp for vc4 driver.
Subsystems (3)
PATCH 1/1 Add RGBA64 texture cpp for vc4 driver.
This patch is needed to help implement half-float texturing and rendering for the vc4 driver in mesa. This small patch introduces the cpp value for the RGBA64 texture. A future patch will include updates to vc4_render_cl.c to handle HDR color stores.
--- drivers/gpu/drm/vc4/vc4_validate.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/gpu/drm/vc4/vc4_validate.c +3 -1
@@ -646,6 +646,9 @@ reloc_tex(struct vc4_exec_info *exec,case VC4_TEXTURE_TYPE_S8 : cpp =1 ;break ; +case VC4_TEXTURE_TYPE_RGBA64 : + cpp =8 ; +break ;case VC4_TEXTURE_TYPE_ETC1 :/* ETC1 is arranged as 64-bit blocks, where each block is 4x4 * pixels.
@@ -657,7 +660,6 @@ reloc_tex(struct vc4_exec_info *exec,case VC4_TEXTURE_TYPE_BW1 :case VC4_TEXTURE_TYPE_A4 :case VC4_TEXTURE_TYPE_A1 : -case VC4_TEXTURE_TYPE_RGBA64 :case VC4_TEXTURE_TYPE_YUV422R :default :DRM_DEBUG ("Texture format %d unsupported\n" , type);
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2.17.1 _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
Quoted 4 lines · Nick Kreeger
This patch is needed to help implement half-float texturing and rendering for the vc4 driver in mesa. This small patch introduces the cpp value for the RGBA64 texture. A future patch will include updates to
vc4_render_cl.cto handle HDR color stores.
We'll need a GET_PARAM ioctl param to say "we support RGBA64 textures" and use that from vc4_screen.c's format checking, otherwise new Mesa on old kernels will try to expose RGBA64 textures and fail at rendering time. If we're introducing a GET_PARAM, we probably want to just do half float rendering and texturing at the same time.
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