diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp index 61d44033b3b..9ff48c9bc3a 100644 --- a/src/intel/compiler/brw_fs.cpp +++ b/src/intel/compiler/brw_fs.cpp @@ -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;