Mesa (master): glsl: add glsl_type::uniform_locations() helper function
Tapani Pälli
tpalli at kemper.freedesktop.org
Mon Jun 16 04:20:17 UTC 2014
Module: Mesa
Branch: master
Commit: dadc3d04f034327b4afeeadf9a860e1b620fab37
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=dadc3d04f034327b4afeeadf9a860e1b620fab37
Author: Tapani Pälli <tapani.palli at intel.com>
Date: Thu Jun 5 07:37:16 2014 +0300
glsl: add glsl_type::uniform_locations() helper function
This function calculates the number of unique values from
glGetUniformLocation for the elements of the type.
Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
---
src/glsl/glsl_types.cpp | 26 ++++++++++++++++++++++++++
src/glsl/glsl_types.h | 6 ++++++
2 files changed, 32 insertions(+)
diff --git a/src/glsl/glsl_types.cpp b/src/glsl/glsl_types.cpp
index 62a9087..f9cd258 100644
--- a/src/glsl/glsl_types.cpp
+++ b/src/glsl/glsl_types.cpp
@@ -675,6 +675,32 @@ glsl_type::component_slots() const
return 0;
}
+unsigned
+glsl_type::uniform_locations() const
+{
+ if (this->is_matrix())
+ return 1;
+
+ unsigned size = 0;
+
+ switch (this->base_type) {
+ case GLSL_TYPE_STRUCT:
+ case GLSL_TYPE_INTERFACE:
+ for (unsigned i = 0; i < this->length; i++)
+ size += this->fields.structure[i].type->uniform_locations();
+ return size;
+ case GLSL_TYPE_ARRAY:
+ return this->length * this->fields.array->uniform_locations();
+ default:
+ break;
+ }
+
+ /* The location count for many types match with component_slots() result,
+ * all expections should be handled above.
+ */
+ return component_slots();
+}
+
bool
glsl_type::can_implicitly_convert_to(const glsl_type *desired,
_mesa_glsl_parse_state *state) const
diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h
index 35a4e6a..f6d4a02 100644
--- a/src/glsl/glsl_types.h
+++ b/src/glsl/glsl_types.h
@@ -256,6 +256,12 @@ struct glsl_type {
unsigned component_slots() const;
/**
+ * Calculate the number of unique values from glGetUniformLocation for the
+ * elements of the type.
+ */
+ unsigned uniform_locations() const;
+
+ /**
* Calculate the number of attribute slots required to hold this type
*
* This implements the language rules of GLSL 1.50 for counting the number
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