Mercurial > hgrepos > Python2 > PyMuPDF

comparison mupdf-source/thirdparty/freeglut/src/egl/fg_state_egl.c @ 2:b50eed0cc0ef upstream

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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
parents
children
comparison
equal deleted inserted replaced
1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * fg_state_egl.c
3 *
4 * EGL-specific freeglut state query methods.
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 #include <GL/freeglut.h>
27 #include "fg_internal.h"
28 #include "egl/fg_window_egl.h"
29
30 /*
31 * Queries the GL context about some attributes
32 */
33 static int fgPlatformGetConfig( int attribute )
34 {
35 int returnValue = 0;
36 int result __fg_unused; /* Not checked */
37
38 if( fgStructure.CurrentWindow )
39 result = eglGetConfigAttrib( fgDisplay.pDisplay.egl.Display,
40 fgStructure.CurrentWindow->Window.pContext.egl.Config,
41 attribute,
42 &returnValue );
43
44 return returnValue;
45 }
46
47 int fghPlatformGlutGetEGL ( GLenum eWhat )
48 {
49 int nsamples = 0;
50
51 switch( eWhat )
52 {
53 /*
54 * The window/context specific queries are handled mostly by
55 * fgPlatformGetConfig().
56 */
57 case GLUT_WINDOW_NUM_SAMPLES:
58 glGetIntegerv(GL_SAMPLES, &nsamples);
59 return nsamples;
60
61 /*
62 * The rest of GLX queries under X are general enough to use a macro to
63 * check them
64 */
65 # define EGL_QUERY(a,b) case a: return fgPlatformGetConfig( b );
66
67 EGL_QUERY( GLUT_WINDOW_BUFFER_SIZE, EGL_BUFFER_SIZE );
68 EGL_QUERY( GLUT_WINDOW_STENCIL_SIZE, EGL_STENCIL_SIZE );
69 EGL_QUERY( GLUT_WINDOW_DEPTH_SIZE, EGL_DEPTH_SIZE );
70 EGL_QUERY( GLUT_WINDOW_RED_SIZE, EGL_RED_SIZE );
71 EGL_QUERY( GLUT_WINDOW_GREEN_SIZE, EGL_GREEN_SIZE );
72 EGL_QUERY( GLUT_WINDOW_BLUE_SIZE, EGL_BLUE_SIZE );
73 EGL_QUERY( GLUT_WINDOW_ALPHA_SIZE, EGL_ALPHA_SIZE );
74
75 # undef EGL_QUERY
76
77 /* I do not know yet if there will be a fgChooseVisual() function for Win32 */
78 case GLUT_DISPLAY_MODE_POSSIBLE:
79 {
80 /* We should not have to call fghChooseConfig again here. */
81 EGLConfig config;
82 return fghChooseConfig(&config);
83 }
84
85 /* This is system-dependent */
86 case GLUT_WINDOW_FORMAT_ID:
87 if( fgStructure.CurrentWindow == NULL )
88 return 0;
89 return fgPlatformGetConfig( EGL_NATIVE_VISUAL_ID );
90
91 case GLUT_WINDOW_DOUBLEBUFFER:
92 return 1; /* EGL is always double-buffered */
93
94 default:
95 fgWarning( "glutGet(): missing enum handle %d", eWhat );
96 break;
97 }
98
99 return -1;
100 }
101
102 int* fgPlatformGlutGetModeValues(GLenum eWhat, int *size)
103 {
104 int *array;
105
106 int attributes[9];
107 int attribute_name = 0;
108
109 array = NULL;
110 *size = 0;
111
112 switch (eWhat)
113 {
114 case GLUT_AUX:
115 break;
116
117 case GLUT_MULTISAMPLE:
118 attributes[0] = EGL_BUFFER_SIZE;
119 attributes[1] = EGL_DONT_CARE;
120 attributes[2] = EGL_SAMPLE_BUFFERS;
121 attributes[3] = 1;
122 attributes[4] = EGL_SAMPLES;
123 attributes[5] = 1;
124 attributes[6] = EGL_NONE;
125
126 attribute_name = EGL_SAMPLES;
127
128 EGLConfig* configArray;
129 EGLint configArraySize = 0;
130
131 /* Get number of available configs */
132 if (!eglChooseConfig(fgDisplay.pDisplay.egl.Display,
133 attributes, NULL, 0,
134 &configArraySize))
135 break;
136 configArray = calloc(configArraySize, sizeof(EGLConfig));
137
138 if (!eglChooseConfig(fgDisplay.pDisplay.egl.Display,
139 attributes, configArray, configArraySize,
140 &configArraySize))
141 break;
142
143 /* We get results in ascending order */
144 {
145 int previous_value = 0;
146 int i;
147
148 array = malloc(sizeof(int) * configArraySize);
149
150 for (i = 0; i < configArraySize; i++) {
151 int value = 0;
152 eglGetConfigAttrib(fgDisplay.pDisplay.egl.Display,
153 configArray[i], attribute_name, &value);
154 if (value > previous_value)
155 {
156 previous_value = value;
157 array[*size] = value;
158 (*size)++;
159 }
160 }
161
162 array = realloc(array, sizeof(int) * (*size));
163 }
164 free(configArray);
165 break;
166
167 default:
168 break;
169 }
170
171 return array;
172 }