v3d/tex: set up default values for Configuration Parameter 1 if possible

[mesa.git] / src / broadcom / compiler / v3d40_tex.c

diff --git a/src/broadcom/compiler/v3d40_tex.c b/src/broadcom/compiler/v3d40_tex.c
index d47d3c30851673b96191e1f1560a2e2944c3ea57..2996313e518ebce5060b86596c587cfef5439a98 100644 (file)
--- a/src/broadcom/compiler/v3d40_tex.c
+++ b/src/broadcom/compiler/v3d40_tex.c
@@ -213,7 +213,7 @@ v3d40_vir_emit_tex(struct v3d_compile *c, nir_tex_instr *instr)
                 (instr->op == nir_texop_lod ||
                  memcmp(&p2_unpacked, &p2_unpacked_default, sizeof(p2_unpacked)) != 0);
 
-        if (needs_p2_config || output_type_32_bit ||
+        if (output_type_32_bit ||
             nir_tex_instr_need_sampler(instr)) {
                 struct V3D41_TMU_CONFIG_PARAMETER_1 p1_unpacked = {
                         .output_type_32_bit = output_type_32_bit,
@@ -244,6 +244,19 @@ v3d40_vir_emit_tex(struct v3d_compile *c, nir_tex_instr *instr)
                 p1_packed |= unit << 24;
 
                 vir_WRTMUC(c, QUNIFORM_TMU_CONFIG_P1, p1_packed);
+        } else if (needs_p2_config) {
+                /* Configuration parameters need to be set up in
+                 * order, and if P2 is needed, you need to set up P1
+                 * too even if sampler info is not needed by the
+                 * texture operation. But we can set up default info,
+                 * and avoid asking the driver for the sampler state
+                 * address
+                 */
+                uint32_t p1_packed_default;
+                V3D41_TMU_CONFIG_PARAMETER_1_pack(NULL,
+                                                  (uint8_t *)&p1_packed_default,
+                                                  &p1_unpacked_default);
+                vir_WRTMUC(c, QUNIFORM_CONSTANT, p1_packed_default);
         }
 
         if (needs_p2_config)