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author | Ian Romanick <ian.d.romanick@intel.com> | 2011-10-24 19:37:11 -0700 |
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committer | Ian Romanick <ian.d.romanick@intel.com> | 2011-10-25 17:51:57 -0700 |
commit | 747e59c7590bd11a4964c6ca12c5ff0dbb6282f2 (patch) | |
tree | 7089168be8dba7f559ab5005cfdc018e82e23d11 /src/glsl/linker.h | |
parent | ca95593d49a2d99a16c160c2a04acc4be007d8a4 (diff) | |
download | external_mesa3d-747e59c7590bd11a4964c6ca12c5ff0dbb6282f2.zip external_mesa3d-747e59c7590bd11a4964c6ca12c5ff0dbb6282f2.tar.gz external_mesa3d-747e59c7590bd11a4964c6ca12c5ff0dbb6282f2.tar.bz2 |
linker: Add uniform_field_visitor class to process leaf fields of a uniform
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Diffstat (limited to 'src/glsl/linker.h')
-rw-r--r-- | src/glsl/linker.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/glsl/linker.h b/src/glsl/linker.h index 769cf68..78c6329 100644 --- a/src/glsl/linker.h +++ b/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 */ |