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authormarha <marha@users.sourceforge.net>2011-10-26 10:58:41 +0200
committermarha <marha@users.sourceforge.net>2011-10-26 10:58:41 +0200
commit4f005bade376d15ee60e90ca45a831aff9725087 (patch)
tree5abdbe5a7c55acf9e30c533414796f629fa9e47c /mesalib/src/glsl/link_uniforms.cpp
parent9f986778bd4393c5a9108426969d45aa7f10f334 (diff)
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libX11 libXft mesa mkfontscale pixman xserver git update 26 okt 2011
Diffstat (limited to 'mesalib/src/glsl/link_uniforms.cpp')
-rw-r--r--mesalib/src/glsl/link_uniforms.cpp85
1 files changed, 85 insertions, 0 deletions
diff --git a/mesalib/src/glsl/link_uniforms.cpp b/mesalib/src/glsl/link_uniforms.cpp
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+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "main/core.h"
+#include "ir.h"
+#include "linker.h"
+#include "glsl_symbol_table.h"
+#include "program/hash_table.h"
+
+/**
+ * \file link_uniforms.cpp
+ * Assign locations for GLSL uniforms.
+ *
+ * \author Ian Romanick <ian.d.romanick@intel.com>
+ */
+
+void
+uniform_field_visitor::process(ir_variable *var)
+{
+ const glsl_type *t = var->type;
+
+ /* Only strdup the name if we actually will need to modify it. */
+ if (t->is_record() || (t->is_array() && t->fields.array->is_record())) {
+ char *name = ralloc_strdup(NULL, var->name);
+ recursion(var->type, &name, strlen(name));
+ ralloc_free(name);
+ } else {
+ this->visit_field(t, var->name);
+ }
+}
+
+void
+uniform_field_visitor::recursion(const glsl_type *t, char **name,
+ unsigned name_length)
+{
+ /* Records need to have each field processed individually.
+ *
+ * Arrays of records need to have each array element processed
+ * individually, then each field of the resulting array elements processed
+ * individually.
+ */
+ if (t->is_record()) {
+ for (unsigned i = 0; i < t->length; i++) {
+ const char *field = t->fields.structure[i].name;
+
+ /* Append '.field' to the current uniform name. */
+ ralloc_asprintf_rewrite_tail(name, name_length, ".%s", field);
+
+ recursion(t->fields.structure[i].type, name,
+ name_length + 1 + strlen(field));
+ }
+ } else if (t->is_array() && t->fields.array->is_record()) {
+ for (unsigned i = 0; i < t->length; i++) {
+ char subscript[13];
+
+ /* Append the subscript to the current uniform name */
+ const unsigned subscript_length = snprintf(subscript, 13, "[%u]", i);
+ ralloc_asprintf_rewrite_tail(name, name_length, "%s", subscript);
+
+ recursion(t->fields.array, name, name_length + subscript_length);
+ }
+ } else {
+ this->visit_field(t, *name);
+ }
+}