brw_pop_insn_state(p);
}
-static void
-generate_mov_indirect(struct brw_codegen *p,
- vec4_instruction *inst,
- struct brw_reg dst, struct brw_reg reg,
- struct brw_reg indirect, struct brw_reg length)
-{
- assert(indirect.type == BRW_REGISTER_TYPE_UD);
-
- unsigned imm_byte_offset = reg.nr * REG_SIZE + reg.subnr * (REG_SIZE / 2);
-
- /* This instruction acts in align1 mode */
- assert(inst->force_writemask_all || reg.writemask == 0xf);
-
- brw_push_insn_state(p);
- brw_set_default_access_mode(p, BRW_ALIGN_1);
- brw_set_default_mask_control(p, BRW_MASK_DISABLE);
-
- struct brw_reg addr = vec2(brw_address_reg(0));
-
- /* We need to move the indirect value into the address register. In order
- * to make things make some sense, we want to respect at least the X
- * component of the swizzle. In order to do that, we need to convert the
- * subnr (probably 0) to an align1 subnr and add in the swizzle. We then
- * use a region of <8,4,0>:uw to pick off the first 2 bytes of the indirect
- * and splat it out to all four channels of the given half of a0.
- */
- assert(brw_is_single_value_swizzle(indirect.swizzle));
- indirect.subnr = (indirect.subnr * 4 + BRW_GET_SWZ(indirect.swizzle, 0)) * 2;
- indirect = stride(retype(indirect, BRW_REGISTER_TYPE_UW), 8, 4, 0);
-
- brw_ADD(p, addr, indirect, brw_imm_uw(imm_byte_offset));
-
- /* Use a <4,1> region Vx1 region*/
- struct brw_reg src = brw_VxH_indirect(0, 0);
- src.width = BRW_WIDTH_4;
- src.hstride = BRW_HORIZONTAL_STRIDE_1;
-
- brw_MOV(p, dst, retype(src, reg.type));
-
- brw_pop_insn_state(p);
-}
-
static void
generate_code(struct brw_codegen *p,
const struct brw_compiler *compiler,
brw_WAIT(p);
break;
- case SHADER_OPCODE_MOV_INDIRECT:
- generate_mov_indirect(p, inst, dst, src[0], src[1], src[2]);
-
default:
unreachable("Unsupported opcode");
}