VDPAU broken in radeonsi by commit 0692ae34

Submitted by Aidan Thornton

Assigned to Default DRI bug account

Description

VDPAU support appears to be broken on radeonsi as of git commit 0692ae34 "ac: move ac_get_num_physical_sgprs into radeon_info". Trying to play back videos using MPV 0.29.1 with it enabled fails with the following error within libvdpau_radeon: "LLVM failed to compile a shader correctly: SGPR:VGPR usage is 56:20, but the hw limit is 0:0" (or 0:256 without the subsequent commit that does the same thing with ac_get_num_physical_vgprs). I assume that information about the limits isn't getting set properly for some reason.

Tested with a Radeon HD 7770 on Linux 5.2 with mpv 0.29.1, ffmpeg 4.2.1, the radeon kernel driver, and xf86-video-ati 19.0.1.

Version: git

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