Mesa (master): st/glsl_to_tgsi: handle doubles outputs in arrays.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: aab0c6c9c400bc7f83516b29cf736fa7ce1f2a13
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=aab0c6c9c400bc7f83516b29cf736fa7ce1f2a13

Author: Dave Airlie <airlied at redhat.com>
Date:   Sat Dec 19 14:43:12 2015 +1000

st/glsl_to_tgsi: handle doubles outputs in arrays.

This handles the case where a double output is stored
in an array, and tracks it for use in the double
instruction emit code.

Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/mesa/state_tracker/st_glsl_to_tgsi.cpp |   35 ++++++++++++++++++++++++----
 1 file changed, 31 insertions(+), 4 deletions(-)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 163f6ea..d152bf9 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -334,8 +334,24 @@ struct array_decl {
    unsigned mesa_index;
    unsigned array_id;
    unsigned array_size;
+   unsigned array_type;
 };
 
+static unsigned
+find_array_type(struct array_decl *arrays, unsigned count, unsigned array_id)
+{
+   unsigned i;
+
+   for (i = 0; i < count; i++) {
+      struct array_decl *decl = &arrays[i];
+
+      if (array_id == decl->array_id) {
+         return decl->array_type;
+      }
+   }
+   return GLSL_TYPE_ERROR;
+}
+
 struct rename_reg_pair {
    int old_reg;
    int new_reg;
@@ -663,6 +679,11 @@ glsl_to_tgsi_visitor::emit_asm(ir_instruction *ir, unsigned op,
       dst_is_double[j] = false;
       if (inst->dst[j].type == GLSL_TYPE_DOUBLE)
          dst_is_double[j] = true;
+      else if (inst->dst[j].file == PROGRAM_OUTPUT && inst->dst[j].type == GLSL_TYPE_ARRAY) {
+         unsigned type = find_array_type(this->output_arrays, this->num_output_arrays, inst->dst[j].array_id);
+         if (type == GLSL_TYPE_DOUBLE)
+            dst_is_double[j] = true;
+      }
    }
 
    if (dst_is_double[0] || dst_is_double[1] ||
@@ -2270,10 +2291,13 @@ glsl_to_tgsi_visitor::visit(ir_dereference_variable *ir)
 
             decl->mesa_index = var->data.location;
             decl->array_id = num_input_arrays + 1;
-            if (is_2d)
+            if (is_2d) {
                decl->array_size = type_size(var->type->fields.array);
-            else
+               decl->array_type = var->type->fields.array->without_array()->base_type;
+            } else {
                decl->array_size = type_size(var->type);
+               decl->array_type = var->type->without_array()->base_type;
+            }
             num_input_arrays++;
 
             entry = new(mem_ctx) variable_storage(var,
@@ -2296,10 +2320,13 @@ glsl_to_tgsi_visitor::visit(ir_dereference_variable *ir)
 
             decl->mesa_index = var->data.location;
             decl->array_id = num_output_arrays + 1;
-            if (is_2d)
+            if (is_2d) {
                decl->array_size = type_size(var->type->fields.array);
-            else
+               decl->array_type = var->type->fields.array->without_array()->base_type;
+            } else {
                decl->array_size = type_size(var->type);
+               decl->array_type = var->type->without_array()->base_type;
+            }
             num_output_arrays++;
 
             entry = new(mem_ctx) variable_storage(var,