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
40extern void
41link_set_uniform_initializers(struct gl_shader_program *prog);
42
43extern int
44link_cross_validate_uniform_block(void *mem_ctx,
45				  struct gl_uniform_block **linked_blocks,
46				  unsigned int *num_linked_blocks,
47				  struct gl_uniform_block *new_block);
48
49void
50link_assign_uniform_block_offsets(struct gl_shader *shader);
51
52/**
53 * Class for processing all of the leaf fields of an uniform
54 *
55 * Leaves are, roughly speaking, the parts of the uniform that the application
56 * could query with \c glGetUniformLocation (or that could be returned by
57 * \c glGetActiveUniforms).
58 *
59 * Classes my derive from this class to implement specific functionality.
60 * This class only provides the mechanism to iterate over the leaves.  Derived
61 * classes must implement \c ::visit_field and may override \c ::process.
62 */
63class uniform_field_visitor {
64public:
65   /**
66    * Begin processing a uniform
67    *
68    * Classes that overload this function should call \c ::process from the
69    * base class to start the recursive processing of the uniform.
70    *
71    * \param var  The uniform variable that is to be processed
72    *
73    * Calls \c ::visit_field for each leaf of the uniform.
74    */
75   void process(ir_variable *var);
76
77protected:
78   /**
79    * Method invoked for each leaf of the uniform
80    *
81    * \param type  Type of the field.
82    * \param name  Fully qualified name of the field.
83    */
84   virtual void visit_field(const glsl_type *type, const char *name) = 0;
85
86private:
87   /**
88    * \param name_length  Length of the current name \b not including the
89    *                     terminating \c NUL character.
90    */
91   void recursion(const glsl_type *t, char **name, size_t name_length);
92};
93
94#endif /* GLSL_LINKER_H */
95