linker.h revision 8292b7419d0405e94a5ea270ba710d20f0eb071f 
1/* -*- c++ -*- */
2/*
3 * Copyright © 2010 Intel Corporation
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25#pragma once
26#ifndef GLSL_LINKER_H
27#define GLSL_LINKER_H
28
29extern bool
30link_function_calls(gl_shader_program *prog, gl_shader *main,
31		    gl_shader **shader_list, unsigned num_shaders);
32
33extern void
34link_invalidate_variable_locations(gl_shader *sh, enum ir_variable_mode mode,
35				   int generic_base);
36
37extern void
38link_assign_uniform_locations(struct gl_shader_program *prog);
39
40/**
41 * Class for processing all of the leaf fields of an uniform
42 *
43 * Leaves are, roughly speaking, the parts of the uniform that the application
44 * could query with \c glGetUniformLocation (or that could be returned by
45 * \c glGetActiveUniforms).
46 *
47 * Classes my derive from this class to implement specific functionality.
48 * This class only provides the mechanism to iterate over the leaves.  Derived
49 * classes must implement \c ::visit_field and may override \c ::process.
50 */
51class uniform_field_visitor {
52public:
53   /**
54    * Begin processing a uniform
55    *
56    * Classes that overload this function should call \c ::process from the
57    * base class to start the recursive processing of the uniform.
58    *
59    * \param var  The uniform variable that is to be processed
60    *
61    * Calls \c ::visit_field for each leaf of the uniform.
62    */
63   void process(ir_variable *var);
64
65protected:
66   /**
67    * Method invoked for each leaf of the uniform
68    *
69    * \param type  Type of the field.
70    * \param name  Fully qualified name of the field.
71    */
72   virtual void visit_field(const glsl_type *type, const char *name) = 0;
73
74private:
75   /**
76    * \param name_length  Length of the current name \b not including the
77    *                     terminating \c NUL character.
78    */
79   void recursion(const glsl_type *t, char **name, size_t name_length);
80};
81
82#endif /* GLSL_LINKER_H */
83