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intel/fs: fix framebuffer reads

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We're missing some restrictions on those messages.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5292
Cc: mesa-stable
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12615>
This commit is contained in:
Lionel Landwerlin 2021-08-30 13:03:26 +03:00 • committed by Marge Bot
parent 451e97028e
commit 838c0e5eef
1 changed files with 14 additions and 0 deletions
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14
src/intel/compiler/brw_fs.cpp
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@ -4871,6 +4871,20 @@ lower_fb_read_logical_send(const fs_builder &bld, fs_inst *inst)
}
}
/* BSpec 12470 (Gfx8-11), BSpec 47842 (Gfx12+) :
*
* "Must be zero for Render Target Read message."
*
* For bits :
* - 14 : Stencil Present to Render Target
* - 13 : Source Depth Present to Render Target
* - 12 : oMask to Render Target
* - 11 : Source0 Alpha Present to Render Target
*/
ubld.group(1, 0).AND(component(header, 0),
component(header, 0),
brw_imm_ud(~INTEL_MASK(14, 11)));
inst->resize_sources(1);
inst->src[0] = header;
inst->opcode = FS_OPCODE_FB_READ;