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 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
