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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/linker.h
parent9f986778bd4393c5a9108426969d45aa7f10f334 (diff)
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libX11 libXft mesa mkfontscale pixman xserver git update 26 okt 2011
Diffstat (limited to 'mesalib/src/glsl/linker.h')
-rw-r--r--mesalib/src/glsl/linker.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/mesalib/src/glsl/linker.h b/mesalib/src/glsl/linker.h
index 769cf68b6..78c632961 100644
--- a/mesalib/src/glsl/linker.h
+++ b/mesalib/src/glsl/linker.h
@@ -1,3 +1,4 @@
+/* -*- c++ -*- */
/*
* Copyright © 2010 Intel Corporation
*
@@ -29,4 +30,46 @@ extern bool
link_function_calls(gl_shader_program *prog, gl_shader *main,
gl_shader **shader_list, unsigned num_shaders);
+/**
+ * Class for processing all of the leaf fields of an uniform
+ *
+ * Leaves are, roughly speaking, the parts of the uniform that the application
+ * could query with \c glGetUniformLocation (or that could be returned by
+ * \c glGetActiveUniforms).
+ *
+ * Classes my derive from this class to implement specific functionality.
+ * This class only provides the mechanism to iterate over the leaves. Derived
+ * classes must implement \c ::visit_field and may override \c ::process.
+ */
+class uniform_field_visitor {
+public:
+ /**
+ * Begin processing a uniform
+ *
+ * Classes that overload this function should call \c ::process from the
+ * base class to start the recursive processing of the uniform.
+ *
+ * \param var The uniform variable that is to be processed
+ *
+ * Calls \c ::visit_field for each leaf of the uniform.
+ */
+ void process(ir_variable *var);
+
+protected:
+ /**
+ * Method invoked for each leaf of the uniform
+ *
+ * \param type Type of the field.
+ * \param name Fully qualified name of the field.
+ */
+ virtual void visit_field(const glsl_type *type, const char *name) = 0;
+
+private:
+ /**
+ * \param name_length Length of the current name \b not including the
+ * terminating \c NUL character.
+ */
+ void recursion(const glsl_type *t, char **name, unsigned name_length);
+};
+
#endif /* GLSL_LINKER_H */