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comparison mupdf-source/thirdparty/freeglut/src/fg_gl2.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * fg_gl2.c
3 *
4 * Load OpenGL (ES) 2.0 functions used by fg_geometry
5 *
6 * Copyright (C) 2012 Sylvain Beucler
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
22 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #ifndef FG_GL2_H
27 #define FG_GL2_H
28
29 #include <GL/freeglut.h>
30 #include "fg_internal.h"
31
32 #ifdef GL_ES_VERSION_2_0
33 /* Use existing functions on GLES 2.0 */
34
35 #define FGH_ARRAY_BUFFER GL_ARRAY_BUFFER
36 #define FGH_STATIC_DRAW GL_STATIC_DRAW
37 #define FGH_ELEMENT_ARRAY_BUFFER GL_ELEMENT_ARRAY_BUFFER
38
39 #define fghGenBuffers glGenBuffers
40 #define fghDeleteBuffers glDeleteBuffers
41 #define fghBindBuffer glBindBuffer
42 #define fghBufferData glBufferData
43 #define fghEnableVertexAttribArray glEnableVertexAttribArray
44 #define fghDisableVertexAttribArray glDisableVertexAttribArray
45 #define fghVertexAttribPointer glVertexAttribPointer
46
47 #else
48 /* Load functions dynamically, they are not defined in e.g. win32's
49 OpenGL headers */
50
51 # ifndef APIENTRY
52 # define APIENTRY
53 # endif
54
55 /* extension #defines, types and entries, avoiding a dependency on additional
56 libraries like GLEW or the GL/glext.h header */
57 #define FGH_ARRAY_BUFFER 0x8892
58 #define FGH_STATIC_DRAW 0x88E4
59 #define FGH_ELEMENT_ARRAY_BUFFER 0x8893
60
61 typedef int fghGLsizeiptr;
62 typedef void (APIENTRY *FGH_PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
63 typedef void (APIENTRY *FGH_PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
64 typedef void (APIENTRY *FGH_PFNGLBUFFERDATAPROC) (GLenum target, fghGLsizeiptr size, const GLvoid *data, GLenum usage);
65 typedef void (APIENTRY *FGH_PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint* buffers);
66 typedef void (APIENTRY *FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
67 typedef void (APIENTRY *FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint);
68 typedef void (APIENTRY *FGH_PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer);
69
70 extern FGH_PFNGLGENBUFFERSPROC fghGenBuffers;
71 extern FGH_PFNGLDELETEBUFFERSPROC fghDeleteBuffers;
72 extern FGH_PFNGLBINDBUFFERPROC fghBindBuffer;
73 extern FGH_PFNGLBUFFERDATAPROC fghBufferData;
74 extern FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC fghEnableVertexAttribArray;
75 extern FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC fghDisableVertexAttribArray;
76 extern FGH_PFNGLVERTEXATTRIBPOINTERPROC fghVertexAttribPointer;
77
78 # endif
79
80 extern void fgInitGL2();
81
82 #endif