aco: SI/CI - fix sampler aniso

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>

diff --git a/src/amd/compiler/aco_instruction_selection.cpp b/src/amd/compiler/aco_instruction_selection.cpp
index f734940ccda4c48cbeaabdb471cc421d8060ec51..805a735497934a766cc0bf48911f1d3459ee0b3a 100644 (file)
--- a/src/amd/compiler/aco_instruction_selection.cpp
+++ b/src/amd/compiler/aco_instruction_selection.cpp
@@ -6180,12 +6180,27 @@ void tex_fetch_ptrs(isel_context *ctx, nir_tex_instr *instr,
    }
    if (samp_ptr) {
       *samp_ptr = get_sampler_desc(ctx, sampler_deref_instr, ACO_DESC_SAMPLER, instr, false, false);
+
       if (instr->sampler_dim < GLSL_SAMPLER_DIM_RECT && ctx->options->chip_class < GFX8) {
-         fprintf(stderr, "Unimplemented sampler descriptor: ");
-         nir_print_instr(&instr->instr, stderr);
-         fprintf(stderr, "\n");
-         abort();
-         // TODO: build samp_ptr = and(samp_ptr, res_ptr)
+         /* fix sampler aniso on SI/CI: samp[0] = samp[0] & img[7] */
+         Builder bld(ctx->program, ctx->block);
+
+         /* to avoid unnecessary moves, we split and recombine sampler and image */
+         Temp img[8] = {bld.tmp(s1), bld.tmp(s1), bld.tmp(s1), bld.tmp(s1),
+                        bld.tmp(s1), bld.tmp(s1), bld.tmp(s1), bld.tmp(s1)};
+         Temp samp[4] = {bld.tmp(s1), bld.tmp(s1), bld.tmp(s1), bld.tmp(s1)};
+         bld.pseudo(aco_opcode::p_split_vector, Definition(img[0]), Definition(img[1]),
+                    Definition(img[2]), Definition(img[3]), Definition(img[4]),
+                    Definition(img[5]), Definition(img[6]), Definition(img[7]), *res_ptr);
+         bld.pseudo(aco_opcode::p_split_vector, Definition(samp[0]), Definition(samp[1]),
+                    Definition(samp[2]), Definition(samp[3]), *samp_ptr);
+
+         samp[0] = bld.sop2(aco_opcode::s_and_b32, bld.def(s1), bld.def(s1, scc), samp[0], img[7]);
+         *res_ptr = bld.pseudo(aco_opcode::p_create_vector, bld.def(s8),
+                               img[0], img[1], img[2], img[3],
+                               img[4], img[5], img[6], img[7]);
+         *samp_ptr = bld.pseudo(aco_opcode::p_create_vector, bld.def(s4),
+                                samp[0], samp[1], samp[2], samp[3]);
       }
    }
    if (fmask_ptr && (instr->op == nir_texop_txf_ms ||