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 static char __crashreporter_info_buff__[4096] = { 0 };
67 static const char *__crashreporter_info__ __attribute__((__used__)) =
68 &__crashreporter_info_buff__[0];
69 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
70 // This is actually a toolchain requirement, but I'm not sure the correct check,
71 // but it should be fine to just only include it for Leopard and later. This line
72 // just tells the linker to never strip this symbol (such as for space optimization)
73 __asm__ (".desc ___crashreporter_info__, 0x10");
74 #endif
75
76 void
apple_visual_create_pfobj(CGLPixelFormatObj * pfobj,const struct glx_config * mode,bool * double_buffered,bool * uses_stereo,bool offscreen)77 apple_visual_create_pfobj(CGLPixelFormatObj * pfobj, const struct glx_config * mode,
78 bool * double_buffered, bool * uses_stereo,
79 bool offscreen)
80 {
81 CGLPixelFormatAttribute attr[MAX_ATTR];
82 int numattr = 0;
83 GLint vsref = 0;
84 CGLError error = 0;
85 bool use_core_profile = getenv("LIBGL_PROFILE_CORE");
86
87 if (offscreen) {
88 apple_glx_diagnostic
89 ("offscreen rendering enabled. Using kCGLPFAOffScreen\n");
90
91 attr[numattr++] = kCGLPFAOffScreen;
92 }
93 else if (getenv("LIBGL_ALWAYS_SOFTWARE") != NULL) {
94 apple_glx_diagnostic
95 ("Software rendering requested. Using kCGLRendererGenericFloatID.\n");
96 attr[numattr++] = kCGLPFARendererID;
97 attr[numattr++] = kCGLRendererGenericFloatID;
98 }
99 else if (getenv("LIBGL_ALLOW_SOFTWARE") != NULL) {
100 apple_glx_diagnostic
101 ("Software rendering is not being excluded. Not using kCGLPFAAccelerated.\n");
102 }
103 else {
104 attr[numattr++] = kCGLPFAAccelerated;
105 }
106
107 /*
108 * The program chose a config based on the fbconfigs or visuals.
109 * Those are based on the attributes from CGL, so we probably
110 * do want the closest match for the color, depth, and accum.
111 */
112 attr[numattr++] = kCGLPFAClosestPolicy;
113
114 if (mode->stereoMode) {
115 attr[numattr++] = kCGLPFAStereo;
116 *uses_stereo = true;
117 }
118 else {
119 *uses_stereo = false;
120 }
121
122 if (!offscreen && mode->doubleBufferMode) {
123 attr[numattr++] = kCGLPFADoubleBuffer;
124 *double_buffered = true;
125 }
126 else {
127 *double_buffered = false;
128 }
129
130 attr[numattr++] = kCGLPFAColorSize;
131 attr[numattr++] = mode->redBits + mode->greenBits + mode->blueBits;
132 attr[numattr++] = kCGLPFAAlphaSize;
133 attr[numattr++] = mode->alphaBits;
134
135 if ((mode->accumRedBits + mode->accumGreenBits + mode->accumBlueBits) > 0) {
136 attr[numattr++] = kCGLPFAAccumSize;
137 attr[numattr++] = mode->accumRedBits + mode->accumGreenBits +
138 mode->accumBlueBits + mode->accumAlphaBits;
139 }
140
141 if (mode->depthBits > 0) {
142 attr[numattr++] = kCGLPFADepthSize;
143 attr[numattr++] = mode->depthBits;
144 }
145
146 if (mode->stencilBits > 0) {
147 attr[numattr++] = kCGLPFAStencilSize;
148 attr[numattr++] = mode->stencilBits;
149 }
150
151 if (mode->sampleBuffers > 0) {
152 attr[numattr++] = kCGLPFAMultisample;
153 attr[numattr++] = kCGLPFASampleBuffers;
154 attr[numattr++] = mode->sampleBuffers;
155 attr[numattr++] = kCGLPFASamples;
156 attr[numattr++] = mode->samples;
157 }
158
159 /* Debugging support for Core profiles to support newer versions of OpenGL */
160 if (use_core_profile) {
161 attr[numattr++] = kCGLPFAOpenGLProfile;
162 attr[numattr++] = kCGLOGLPVersion_3_2_Core;
163 }
164
165 attr[numattr++] = 0;
166
167 assert(numattr < MAX_ATTR);
168
169 error = apple_cgl.choose_pixel_format(attr, pfobj, &vsref);
170
171 if ((error == kCGLBadAttribute || vsref == 0) && use_core_profile) {
172 apple_glx_diagnostic
173 ("Trying again without CoreProfile: error=%s, vsref=%d\n", apple_cgl.error_string(error), vsref);
174
175 if (!error)
176 apple_cgl.destroy_pixel_format(*pfobj);
177
178 numattr -= 3;
179 attr[numattr++] = 0;
180
181 error = apple_cgl.choose_pixel_format(attr, pfobj, &vsref);
182 }
183
184 if (error) {
185 snprintf(__crashreporter_info_buff__, sizeof(__crashreporter_info_buff__),
186 "CGLChoosePixelFormat error: %s\n", apple_cgl.error_string(error));
187 fprintf(stderr, "%s", __crashreporter_info_buff__);
188 abort();
189 }
190
191 if (!*pfobj) {
192 snprintf(__crashreporter_info_buff__, sizeof(__crashreporter_info_buff__),
193 "No matching pixelformats found, perhaps try using LIBGL_ALLOW_SOFTWARE\n");
194 fprintf(stderr, "%s", __crashreporter_info_buff__);
195 abort();
196 }
197 }
198