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annotate src/video/quartz/SDL_QuartzGL.m @ 1240:3b8a43c428bb

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From Bug #36: There are a couple of issues with the selection of Altivec alpha-blitting routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c. 1) There's no check for the presence of Altivec when checking if the Blit32to565PixelAlphaAltivec() routine can be selected. 2) Altivec cannot be used in video memory, and there's no check if the destination surface is a hardware surface. (Alpha-blitting to a hardware surface with GPU support is a bad idea, but somebody's bound to do it anyway.) Patch to fix these attached.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 08 Jan 2006 21:18:15 +0000
parents bb6791b0a268
children 5abff0870de2
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2003 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #include "SDL_QuartzVideo.h"
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24
857
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25 /*
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26 * GL_ARB_Multisample is supposed to be available in 10.1, according to Apple:
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27 *
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28 * http://developer.apple.com/opengl/extensions.html#GL_ARB_multisample
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29 *
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30 * ...but it isn't in the system headers, according to Sam:
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31 *
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32 * http://www.libsdl.org/pipermail/sdl/2003-December/058335.html
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33 *
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34 * These are normally enums and not #defines in the system headers.
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35 *
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36 * --ryan.
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37 */
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38 #if (MAC_OS_X_VERSION_MAX_ALLOWED < 1020)
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39 #define NSOpenGLPFASampleBuffers ((NSOpenGLPixelFormatAttribute) 55)
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40 #define NSOpenGLPFASamples ((NSOpenGLPixelFormatAttribute) 56)
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41 #endif
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42
761
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43
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44 @implementation NSOpenGLContext (CGLContextAccess)
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45 - (CGLContextObj) cglContext;
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46 {
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47 return _contextAuxiliary;
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48 }
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49 @end
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50
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51 /* OpenGL helper functions (used internally) */
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52
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53 int QZ_SetupOpenGL (_THIS, int bpp, Uint32 flags) {
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54
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55 NSOpenGLPixelFormatAttribute attr[32];
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56 NSOpenGLPixelFormat *fmt;
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57 int i = 0;
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58 int colorBits = bpp;
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59
1195
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60 /* if a GL library hasn't been loaded at this point, load the default. */
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61 if (!this->gl_config.driver_loaded) {
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62 if (QZ_GL_LoadLibrary(this, NULL) == -1)
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63 return 0;
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64 }
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65
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66 if ( flags & SDL_FULLSCREEN ) {
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67
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68 attr[i++] = NSOpenGLPFAFullScreen;
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69 }
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70 /* In windowed mode, the OpenGL pixel depth must match device pixel depth */
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71 else if ( colorBits != device_bpp ) {
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72
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73 colorBits = device_bpp;
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74 }
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75
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76 attr[i++] = NSOpenGLPFAColorSize;
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77 attr[i++] = colorBits;
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78
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79 attr[i++] = NSOpenGLPFADepthSize;
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80 attr[i++] = this->gl_config.depth_size;
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81
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82 if ( this->gl_config.double_buffer ) {
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83 attr[i++] = NSOpenGLPFADoubleBuffer;
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84 }
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85
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86 if ( this->gl_config.stereo ) {
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87 attr[i++] = NSOpenGLPFAStereo;
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88 }
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89
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90 if ( this->gl_config.stencil_size != 0 ) {
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91 attr[i++] = NSOpenGLPFAStencilSize;
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92 attr[i++] = this->gl_config.stencil_size;
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93 }
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94
890
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95 if ( (this->gl_config.accum_red_size +
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96 this->gl_config.accum_green_size +
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97 this->gl_config.accum_blue_size +
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98 this->gl_config.accum_alpha_size) > 0 ) {
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99 attr[i++] = NSOpenGLPFAAccumSize;
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100 attr[i++] = this->gl_config.accum_red_size + this->gl_config.accum_green_size + this->gl_config.accum_blue_size + this->gl_config.accum_alpha_size;
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101 }
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102
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103 if ( this->gl_config.multisamplebuffers != 0 ) {
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104 attr[i++] = NSOpenGLPFASampleBuffers;
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105 attr[i++] = this->gl_config.multisamplebuffers;
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106 }
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107
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108 if ( this->gl_config.multisamplesamples != 0 ) {
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109 attr[i++] = NSOpenGLPFASamples;
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110 attr[i++] = this->gl_config.multisamplesamples;
900
c3c8739f7844 *** empty log message ***
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111 attr[i++] = NSOpenGLPFANoRecovery;
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112 attr[i++] = (NSOpenGLPixelFormatAttribute)nil;
761
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113 }
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114
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115 attr[i++] = NSOpenGLPFAScreenMask;
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116 attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id);
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117 attr[i] = 0;
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118
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119 fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ];
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120 if (fmt == nil) {
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121 SDL_SetError ("Failed creating OpenGL pixel format");
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122 return 0;
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123 }
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124
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125 gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt
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126 shareContext:nil];
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127
1160
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128 [ fmt release ];
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129
761
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130 if (gl_context == nil) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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131 SDL_SetError ("Failed creating OpenGL context");
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132 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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133 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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134
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135 /*
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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136 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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137 * "You are blowing a couple of the internal OpenGL function caches. This
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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138 * appears to be happening in the VAO case. You can tell OpenGL to up
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139 * the cache size by issuing the following calls right after you create
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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140 * the OpenGL context. The default cache size is 16." --ryan.
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141 */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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142
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143 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
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144 #define GLI_ARRAY_FUNC_CACHE_MAX 284
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145 #endif
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146
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147 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
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148 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
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149 #endif
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150
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diff changeset
151 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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152 long cache_max = 64;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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153 CGLContextObj ctx = [ gl_context cglContext ];
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154 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
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155 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
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156 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
157
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158 /* End Wisdom from Apple Engineer section. --ryan. */
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159
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160 return 1;
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161 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
163 void QZ_TearDownOpenGL (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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164
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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165 [ NSOpenGLContext clearCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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166 [ gl_context clearDrawable ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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167 [ gl_context release ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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168 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
169
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diff changeset
170
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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171 /* SDL OpenGL functions */
1189
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172 static const char *DEFAULT_OPENGL_LIB_NAME =
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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173 "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib";
761
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174
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175 int QZ_GL_LoadLibrary (_THIS, const char *location) {
1181
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176 if ( gl_context != NULL ) {
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177 SDL_SetError("OpenGL context already created");
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178 return -1;
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179 }
49d3efec6651 Quartz driver OpenGL updates:
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180
1189
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181 if (opengl_library != NULL)
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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182 SDL_UnloadObject(opengl_library);
1181
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183
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184 if (location == NULL)
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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185 location = DEFAULT_OPENGL_LIB_NAME;
1181
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186
1189
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187 opengl_library = SDL_LoadObject(location);
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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188 if (opengl_library != NULL) {
1181
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189 this->gl_config.driver_loaded = 1;
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190 return 0;
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191 }
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192
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193 this->gl_config.driver_loaded = 0;
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194 return -1;
761
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195 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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196
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197 void* QZ_GL_GetProcAddress (_THIS, const char *proc) {
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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198 return SDL_LoadFunction(opengl_library, proc);
761
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199 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
200
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diff changeset
201 int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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202
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
203 GLenum attr = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
204
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
205 QZ_GL_MakeCurrent (this);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
206
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
207 switch (attrib) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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208 case SDL_GL_RED_SIZE: attr = GL_RED_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
209 case SDL_GL_BLUE_SIZE: attr = GL_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
210 case SDL_GL_GREEN_SIZE: attr = GL_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
211 case SDL_GL_ALPHA_SIZE: attr = GL_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
212 case SDL_GL_DOUBLEBUFFER: attr = GL_DOUBLEBUFFER; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
213 case SDL_GL_DEPTH_SIZE: attr = GL_DEPTH_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 case SDL_GL_STENCIL_SIZE: attr = GL_STENCIL_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 case SDL_GL_ACCUM_RED_SIZE: attr = GL_ACCUM_RED_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 case SDL_GL_ACCUM_GREEN_SIZE: attr = GL_ACCUM_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 case SDL_GL_ACCUM_BLUE_SIZE: attr = GL_ACCUM_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 case SDL_GL_ACCUM_ALPHA_SIZE: attr = GL_ACCUM_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219 case SDL_GL_STEREO: attr = GL_STEREO; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220 case SDL_GL_MULTISAMPLEBUFFERS: attr = GL_SAMPLE_BUFFERS_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 case SDL_GL_MULTISAMPLESAMPLES: attr = GL_SAMPLES_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 case SDL_GL_BUFFER_SIZE:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
224 GLint bits = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
225 GLint component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
227 /* there doesn't seem to be a single flag in OpenGL for this! */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
228 glGetIntegerv (GL_RED_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
229 glGetIntegerv (GL_GREEN_BITS,&component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
230 glGetIntegerv (GL_BLUE_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
231 glGetIntegerv (GL_ALPHA_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 *value = bits;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 glGetIntegerv (attr, (GLint *)value);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 int QZ_GL_MakeCurrent (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 [ gl_context makeCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 void QZ_GL_SwapBuffers (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 [ gl_context flushBuffer ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 }