From: Iago Toral Quiroga <itoral@igalia.com>
Date: Fri, 1 Jul 2016 07:01:56 +0000 (+0200)
Subject: i965/vec4: fix store output for 64-bit types
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b76f2206f550c37835d4e19eea1588caa0211b85;p=mesa.git

i965/vec4: fix store output for 64-bit types

We need to shuffle the data before it is written to the URB. Also,
dvec3/4 need two vec4 slots.

v2: use byte_offset() instead of offset().

Reviewed-by: Matt Turner <mattst88@gmail.com>
---

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 91e1d36714f..065e3170f10 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -435,12 +435,35 @@ vec4_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
 
       int varying = instr->const_index[0] + const_offset->u32[0];
 
-      src = get_nir_src(instr->src[0], BRW_REGISTER_TYPE_F,
-                        instr->num_components);
+      bool is_64bit = nir_src_bit_size(instr->src[0]) == 64;
+      if (is_64bit) {
+         src_reg data;
+         src = get_nir_src(instr->src[0], BRW_REGISTER_TYPE_DF,
+                           instr->num_components);
+         data = src_reg(this, glsl_type::dvec4_type);
+         shuffle_64bit_data(dst_reg(data), src, true);
+         src = retype(data, BRW_REGISTER_TYPE_F);
+      } else {
+         src = get_nir_src(instr->src[0], BRW_REGISTER_TYPE_F,
+                           instr->num_components);
+      }
 
       unsigned c = nir_intrinsic_component(instr);
       output_reg[varying][c] = dst_reg(src);
       output_num_components[varying][c] = instr->num_components;
+
+      unsigned num_components = instr->num_components;
+      if (is_64bit)
+         num_components *= 2;
+
+      output_reg[varying][c] = dst_reg(src);
+      output_num_components[varying][c] = MIN2(4, num_components);
+
+      if (is_64bit && num_components > 4) {
+         assert(num_components <= 8);
+         output_reg[varying + 1][c] = byte_offset(dst_reg(src), REG_SIZE);
+         output_num_components[varying + 1][c] = num_components - 4;
+      }
       break;
    }