1 /*
2 Copyright (c) 2008, 2009 Apple Inc.
3
4 Permission is hereby granted, free of charge, to any person
5 obtaining a copy of this software and associated documentation files
6 (the "Software"), to deal in the Software without restriction,
7 including without limitation the rights to use, copy, modify, merge,
8 publish, distribute, sublicense, and/or sell copies of the Software,
9 and to permit persons to whom the Software is furnished to do so,
10 subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
19 HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
23
24 Except as contained in this notice, the name(s) of the above
25 copyright holders shall not be used in advertising or otherwise to
26 promote the sale, use or other dealings in this Software without
27 prior written authorization.
28 */
29
30 #include <stdbool.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <assert.h>
34 #include <GL/gl.h>
35
36 /* <rdar://problem/6953344> */
37 #define glTexImage1D glTexImage1D_OSX
38 #define glTexImage2D glTexImage2D_OSX
39 #define glTexImage3D glTexImage3D_OSX
40 #include <OpenGL/OpenGL.h>
41 #include <OpenGL/CGLContext.h>
42 #include <OpenGL/CGLRenderers.h>
43 #include <OpenGL/CGLTypes.h>
44 #undef glTexImage1D
45 #undef glTexImage2D
46 #undef glTexImage3D
47
48 #ifndef kCGLPFAOpenGLProfile
49 #define kCGLPFAOpenGLProfile 99
50 #endif
51
52 #ifndef kCGLOGLPVersion_3_2_Core
53 #define kCGLOGLPVersion_3_2_Core 0x3200
54 #endif
55
56 #include "apple_cgl.h"
57 #include "apple_visual.h"
58 #include "apple_glx.h"
59 #include "glxconfig.h"
60
61 enum
62 {
63 MAX_ATTR = 60
64 };
65
66 void
apple_visual_create_pfobj(CGLPixelFormatObj * pfobj,const struct glx_config * mode,bool * double_buffered,bool * uses_stereo,bool offscreen)67 apple_visual_create_pfobj(CGLPixelFormatObj * pfobj, const struct glx_config * mode,
68 bool * double_buffered, bool * uses_stereo,
69 bool offscreen)
70 {
71 CGLPixelFormatAttribute attr[MAX_ATTR];
72 int numattr = 0;
73 GLint vsref = 0;
74 CGLError error = 0;
75
76 /* Request an OpenGL 3.2 profile if one is available */
77 if(apple_cgl.version_major > 1 || (apple_cgl.version_major == 1 && apple_cgl.version_minor >= 3)) {
78 attr[numattr++] = kCGLPFAOpenGLProfile;
79 attr[numattr++] = kCGLOGLPVersion_3_2_Core;
80 }
81
82 if (offscreen) {
83 apple_glx_diagnostic
84 ("offscreen rendering enabled. Using kCGLPFAOffScreen\n");
85
86 attr[numattr++] = kCGLPFAOffScreen;
87 attr[numattr++] = kCGLPFAColorSize;
88 attr[numattr++] = 32;
89 }
90 else if (getenv("LIBGL_ALWAYS_SOFTWARE") != NULL) {
91 apple_glx_diagnostic
92 ("Software rendering requested. Using kCGLRendererGenericFloatID.\n");
93 attr[numattr++] = kCGLPFARendererID;
94 attr[numattr++] = kCGLRendererGenericFloatID;
95 }
96 else if (getenv("LIBGL_ALLOW_SOFTWARE") != NULL) {
97 apple_glx_diagnostic
98 ("Software rendering is not being excluded. Not using kCGLPFAAccelerated.\n");
99 }
100 else {
101 attr[numattr++] = kCGLPFAAccelerated;
102 }
103
104 /*
105 * The program chose a config based on the fbconfigs or visuals.
106 * Those are based on the attributes from CGL, so we probably
107 * do want the closest match for the color, depth, and accum.
108 */
109 attr[numattr++] = kCGLPFAClosestPolicy;
110
111 if (mode->stereoMode) {
112 attr[numattr++] = kCGLPFAStereo;
113 *uses_stereo = true;
114 }
115 else {
116 *uses_stereo = false;
117 }
118
119 if (!offscreen && mode->doubleBufferMode) {
120 attr[numattr++] = kCGLPFADoubleBuffer;
121 *double_buffered = true;
122 }
123 else {
124 *double_buffered = false;
125 }
126
127 attr[numattr++] = kCGLPFAColorSize;
128 attr[numattr++] = mode->redBits + mode->greenBits + mode->blueBits;
129 attr[numattr++] = kCGLPFAAlphaSize;
130 attr[numattr++] = mode->alphaBits;
131
132 if ((mode->accumRedBits + mode->accumGreenBits + mode->accumBlueBits) > 0) {
133 attr[numattr++] = kCGLPFAAccumSize;
134 attr[numattr++] = mode->accumRedBits + mode->accumGreenBits +
135 mode->accumBlueBits + mode->accumAlphaBits;
136 }
137
138 if (mode->depthBits > 0) {
139 attr[numattr++] = kCGLPFADepthSize;
140 attr[numattr++] = mode->depthBits;
141 }
142
143 if (mode->stencilBits > 0) {
144 attr[numattr++] = kCGLPFAStencilSize;
145 attr[numattr++] = mode->stencilBits;
146 }
147
148 if (mode->sampleBuffers > 0) {
149 attr[numattr++] = kCGLPFAMultisample;
150 attr[numattr++] = kCGLPFASampleBuffers;
151 attr[numattr++] = mode->sampleBuffers;
152 attr[numattr++] = kCGLPFASamples;
153 attr[numattr++] = mode->samples;
154 }
155
156 attr[numattr++] = 0;
157
158 assert(numattr < MAX_ATTR);
159
160 error = apple_cgl.choose_pixel_format(attr, pfobj, &vsref);
161
162 if (error) {
163 fprintf(stderr, "error: %s\n", apple_cgl.error_string(error));
164 abort();
165 }
166 }
167