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4358 | Serge | 1 | /* |
2 | * (C) Copyright IBM Corporation 2002, 2004 |
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3 | * All Rights Reserved. |
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4 | * |
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5 | * Permission is hereby granted, free of charge, to any person obtaining a |
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6 | * copy of this software and associated documentation files (the "Software"), |
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7 | * to deal in the Software without restriction, including without limitation |
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8 | * on the rights to use, copy, modify, merge, publish, distribute, sub |
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9 | * license, and/or sell copies of the Software, and to permit persons to whom |
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10 | * the Software is furnished to do so, subject to the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice (including the next |
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13 | * paragraph) shall be included in all copies or substantial portions of the |
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14 | * Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
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20 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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21 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
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22 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
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23 | */ |
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24 | |||
25 | /** |
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26 | * \file dri_util.c |
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27 | * DRI utility functions. |
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28 | * |
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29 | * This module acts as glue between GLX and the actual hardware driver. A DRI |
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30 | * driver doesn't really \e have to use any of this - it's optional. But, some |
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31 | * useful stuff is done here that otherwise would have to be duplicated in most |
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32 | * drivers. |
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33 | * |
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34 | * Basically, these utility functions take care of some of the dirty details of |
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35 | * screen initialization, context creation, context binding, DRM setup, etc. |
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36 | * |
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37 | * These functions are compiled into each DRI driver so libGL.so knows nothing |
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38 | * about them. |
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39 | */ |
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40 | |||
41 | |||
42 | #include |
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43 | #include "dri_util.h" |
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44 | #include "utils.h" |
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45 | #include "xmlpool.h" |
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46 | #include "../glsl/glsl_parser_extras.h" |
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47 | |||
48 | PUBLIC const char __dri2ConfigOptions[] = |
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49 | DRI_CONF_BEGIN |
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50 | DRI_CONF_SECTION_PERFORMANCE |
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51 | DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1) |
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52 | DRI_CONF_SECTION_END |
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53 | DRI_CONF_END; |
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54 | |||
55 | static const uint __dri2NConfigOptions = 1; |
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56 | |||
57 | /*****************************************************************/ |
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58 | /** \name Screen handling functions */ |
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59 | /*****************************************************************/ |
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60 | /*@{*/ |
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61 | |||
62 | static void |
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63 | setupLoaderExtensions(__DRIscreen *psp, |
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64 | const __DRIextension **extensions) |
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65 | { |
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66 | int i; |
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67 | |||
68 | for (i = 0; extensions[i]; i++) { |
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69 | if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0) |
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70 | psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i]; |
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71 | if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0) |
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72 | psp->dri2.image = (__DRIimageLookupExtension *) extensions[i]; |
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73 | if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0) |
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74 | psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i]; |
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75 | } |
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76 | } |
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77 | |||
78 | static __DRIscreen * |
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79 | dri2CreateNewScreen(int scrn, int fd, |
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80 | const __DRIextension **extensions, |
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81 | const __DRIconfig ***driver_configs, void *data) |
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82 | { |
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83 | static const __DRIextension *emptyExtensionList[] = { NULL }; |
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84 | __DRIscreen *psp; |
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85 | drmVersionPtr version; |
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86 | |||
87 | psp = calloc(1, sizeof(*psp)); |
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88 | if (!psp) |
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89 | return NULL; |
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90 | |||
91 | setupLoaderExtensions(psp, extensions); |
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92 | |||
93 | version = drmGetVersion(fd); |
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94 | if (version) { |
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95 | psp->drm_version.major = version->version_major; |
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96 | psp->drm_version.minor = version->version_minor; |
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97 | psp->drm_version.patch = version->version_patchlevel; |
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98 | drmFreeVersion(version); |
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99 | } |
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100 | |||
101 | psp->loaderPrivate = data; |
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102 | |||
103 | psp->extensions = emptyExtensionList; |
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104 | psp->fd = fd; |
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105 | psp->myNum = scrn; |
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106 | |||
107 | psp->api_mask = (1 << __DRI_API_OPENGL); |
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108 | |||
109 | *driver_configs = driDriverAPI.InitScreen(psp); |
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110 | if (*driver_configs == NULL) { |
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111 | free(psp); |
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112 | return NULL; |
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113 | } |
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114 | |||
115 | driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions, __dri2NConfigOptions); |
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116 | driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum, "dri2"); |
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117 | |||
118 | return psp; |
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119 | } |
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120 | |||
121 | /** |
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122 | * Destroy the per-screen private information. |
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123 | * |
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124 | * \internal |
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125 | * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls |
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126 | * drmClose(), and finally frees \p screenPrivate. |
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127 | */ |
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128 | static void driDestroyScreen(__DRIscreen *psp) |
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129 | { |
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130 | if (psp) { |
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131 | /* No interaction with the X-server is possible at this point. This |
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132 | * routine is called after XCloseDisplay, so there is no protocol |
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133 | * stream open to the X-server anymore. |
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134 | */ |
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135 | |||
136 | _mesa_destroy_shader_compiler(); |
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137 | |||
138 | driDriverAPI.DestroyScreen(psp); |
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139 | |||
140 | driDestroyOptionCache(&psp->optionCache); |
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141 | driDestroyOptionInfo(&psp->optionInfo); |
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142 | |||
143 | free(psp); |
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144 | } |
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145 | } |
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146 | |||
147 | static const __DRIextension **driGetExtensions(__DRIscreen *psp) |
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148 | { |
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149 | return psp->extensions; |
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150 | } |
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151 | |||
152 | /*@}*/ |
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153 | |||
154 | |||
155 | /*****************************************************************/ |
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156 | /** \name Context handling functions */ |
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157 | /*****************************************************************/ |
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158 | /*@{*/ |
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159 | |||
160 | static __DRIcontext * |
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161 | dri2CreateContextAttribs(__DRIscreen *screen, int api, |
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162 | const __DRIconfig *config, |
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163 | __DRIcontext *shared, |
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164 | unsigned num_attribs, |
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165 | const uint32_t *attribs, |
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166 | unsigned *error, |
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167 | void *data) |
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168 | { |
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169 | __DRIcontext *context; |
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170 | const struct gl_config *modes = (config != NULL) ? &config->modes : NULL; |
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171 | void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL; |
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172 | gl_api mesa_api; |
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173 | unsigned major_version = 1; |
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174 | unsigned minor_version = 0; |
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175 | uint32_t flags = 0; |
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176 | |||
177 | assert((num_attribs == 0) || (attribs != NULL)); |
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178 | |||
179 | if (!(screen->api_mask & (1 << api))) { |
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180 | *error = __DRI_CTX_ERROR_BAD_API; |
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181 | return NULL; |
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182 | } |
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183 | |||
184 | switch (api) { |
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185 | case __DRI_API_OPENGL: |
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186 | mesa_api = API_OPENGL_COMPAT; |
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187 | break; |
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188 | case __DRI_API_GLES: |
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189 | mesa_api = API_OPENGLES; |
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190 | break; |
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191 | case __DRI_API_GLES2: |
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192 | case __DRI_API_GLES3: |
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193 | mesa_api = API_OPENGLES2; |
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194 | break; |
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195 | case __DRI_API_OPENGL_CORE: |
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196 | mesa_api = API_OPENGL_CORE; |
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197 | break; |
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198 | default: |
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199 | *error = __DRI_CTX_ERROR_BAD_API; |
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200 | return NULL; |
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201 | } |
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202 | |||
203 | for (unsigned i = 0; i < num_attribs; i++) { |
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204 | switch (attribs[i * 2]) { |
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205 | case __DRI_CTX_ATTRIB_MAJOR_VERSION: |
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206 | major_version = attribs[i * 2 + 1]; |
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207 | break; |
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208 | case __DRI_CTX_ATTRIB_MINOR_VERSION: |
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209 | minor_version = attribs[i * 2 + 1]; |
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210 | break; |
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211 | case __DRI_CTX_ATTRIB_FLAGS: |
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212 | flags = attribs[i * 2 + 1]; |
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213 | break; |
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214 | default: |
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215 | /* We can't create a context that satisfies the requirements of an |
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216 | * attribute that we don't understand. Return failure. |
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217 | */ |
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218 | assert(!"Should not get here."); |
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219 | *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; |
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220 | return NULL; |
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221 | } |
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222 | } |
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223 | |||
224 | /* Mesa does not support the GL_ARB_compatibilty extension or the |
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225 | * compatibility profile. This means that we treat a API_OPENGL_COMPAT 3.1 as |
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226 | * API_OPENGL_CORE and reject API_OPENGL_COMPAT 3.2+. |
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227 | */ |
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228 | if (mesa_api == API_OPENGL_COMPAT && major_version == 3 && minor_version == 1) |
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229 | mesa_api = API_OPENGL_CORE; |
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230 | |||
231 | if (mesa_api == API_OPENGL_COMPAT |
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232 | && ((major_version > 3) |
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233 | || (major_version == 3 && minor_version >= 2))) { |
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234 | *error = __DRI_CTX_ERROR_BAD_API; |
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235 | return NULL; |
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236 | } |
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237 | |||
238 | /* The EGL_KHR_create_context spec says: |
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239 | * |
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240 | * "Flags are only defined for OpenGL context creation, and specifying |
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241 | * a flags value other than zero for other types of contexts, |
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242 | * including OpenGL ES contexts, will generate an error." |
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243 | * |
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244 | * The GLX_EXT_create_context_es2_profile specification doesn't say |
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245 | * anything specific about this case. However, none of the known flags |
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246 | * have any meaning in an ES context, so this seems safe. |
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247 | */ |
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248 | if (mesa_api != API_OPENGL_COMPAT |
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249 | && mesa_api != API_OPENGL_CORE |
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250 | && flags != 0) { |
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251 | *error = __DRI_CTX_ERROR_BAD_FLAG; |
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252 | return NULL; |
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253 | } |
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254 | |||
255 | /* There are no forward-compatible contexts before OpenGL 3.0. The |
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256 | * GLX_ARB_create_context spec says: |
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257 | * |
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258 | * "Forward-compatible contexts are defined only for OpenGL versions |
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259 | * 3.0 and later." |
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260 | * |
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261 | * Forward-looking contexts are supported by silently converting the |
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262 | * requested API to API_OPENGL_CORE. |
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263 | * |
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264 | * In Mesa, a debug context is the same as a regular context. |
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265 | */ |
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266 | if ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) { |
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267 | mesa_api = API_OPENGL_CORE; |
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268 | } |
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269 | |||
270 | if ((flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE)) |
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271 | != 0) { |
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272 | *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; |
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273 | return NULL; |
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274 | } |
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275 | |||
276 | context = calloc(1, sizeof *context); |
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277 | if (!context) { |
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278 | *error = __DRI_CTX_ERROR_NO_MEMORY; |
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279 | return NULL; |
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280 | } |
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281 | |||
282 | context->loaderPrivate = data; |
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283 | |||
284 | context->driScreenPriv = screen; |
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285 | context->driDrawablePriv = NULL; |
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286 | context->driReadablePriv = NULL; |
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287 | |||
288 | if (!driDriverAPI.CreateContext(mesa_api, modes, context, |
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289 | major_version, minor_version, |
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290 | flags, error, shareCtx) ) { |
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291 | free(context); |
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292 | return NULL; |
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293 | } |
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294 | |||
295 | *error = __DRI_CTX_ERROR_SUCCESS; |
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296 | return context; |
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297 | } |
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298 | |||
299 | static __DRIcontext * |
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300 | dri2CreateNewContextForAPI(__DRIscreen *screen, int api, |
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301 | const __DRIconfig *config, |
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302 | __DRIcontext *shared, void *data) |
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303 | { |
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304 | unsigned error; |
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305 | |||
306 | return dri2CreateContextAttribs(screen, api, config, shared, 0, NULL, |
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307 | &error, data); |
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308 | } |
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309 | |||
310 | static __DRIcontext * |
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311 | dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config, |
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312 | __DRIcontext *shared, void *data) |
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313 | { |
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314 | return dri2CreateNewContextForAPI(screen, __DRI_API_OPENGL, |
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315 | config, shared, data); |
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316 | } |
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317 | |||
318 | /** |
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319 | * Destroy the per-context private information. |
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320 | * |
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321 | * \internal |
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322 | * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls |
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323 | * drmDestroyContext(), and finally frees \p contextPrivate. |
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324 | */ |
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325 | static void |
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326 | driDestroyContext(__DRIcontext *pcp) |
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327 | { |
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328 | if (pcp) { |
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329 | driDriverAPI.DestroyContext(pcp); |
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330 | free(pcp); |
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331 | } |
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332 | } |
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333 | |||
334 | static int |
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335 | driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask) |
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336 | { |
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337 | (void) dest; |
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338 | (void) src; |
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339 | (void) mask; |
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340 | return GL_FALSE; |
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341 | } |
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342 | |||
343 | /*@}*/ |
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344 | |||
345 | |||
346 | /*****************************************************************/ |
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347 | /** \name Context (un)binding functions */ |
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348 | /*****************************************************************/ |
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349 | /*@{*/ |
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350 | |||
351 | static void dri_get_drawable(__DRIdrawable *pdp); |
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352 | static void dri_put_drawable(__DRIdrawable *pdp); |
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353 | |||
354 | /** |
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355 | * This function takes both a read buffer and a draw buffer. This is needed |
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356 | * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent |
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357 | * function. |
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358 | */ |
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359 | static int driBindContext(__DRIcontext *pcp, |
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360 | __DRIdrawable *pdp, |
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361 | __DRIdrawable *prp) |
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362 | { |
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363 | /* |
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364 | ** Assume error checking is done properly in glXMakeCurrent before |
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365 | ** calling driUnbindContext. |
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366 | */ |
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367 | |||
368 | if (!pcp) |
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369 | return GL_FALSE; |
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370 | |||
371 | /* Bind the drawable to the context */ |
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372 | pcp->driDrawablePriv = pdp; |
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373 | pcp->driReadablePriv = prp; |
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374 | if (pdp) { |
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375 | pdp->driContextPriv = pcp; |
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376 | dri_get_drawable(pdp); |
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377 | } |
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378 | if (prp && pdp != prp) { |
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379 | dri_get_drawable(prp); |
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380 | } |
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381 | |||
382 | return driDriverAPI.MakeCurrent(pcp, pdp, prp); |
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383 | } |
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384 | |||
385 | /** |
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386 | * Unbind context. |
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387 | * |
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388 | * \param scrn the screen. |
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389 | * \param gc context. |
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390 | * |
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391 | * \return \c GL_TRUE on success, or \c GL_FALSE on failure. |
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392 | * |
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393 | * \internal |
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394 | * This function calls __DriverAPIRec::UnbindContext, and then decrements |
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395 | * __DRIdrawableRec::refcount which must be non-zero for a successful |
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396 | * return. |
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397 | * |
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398 | * While casting the opaque private pointers associated with the parameters |
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399 | * into their respective real types it also assures they are not \c NULL. |
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400 | */ |
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401 | static int driUnbindContext(__DRIcontext *pcp) |
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402 | { |
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403 | __DRIdrawable *pdp; |
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404 | __DRIdrawable *prp; |
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405 | |||
406 | /* |
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407 | ** Assume error checking is done properly in glXMakeCurrent before |
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408 | ** calling driUnbindContext. |
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409 | */ |
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410 | |||
411 | if (pcp == NULL) |
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412 | return GL_FALSE; |
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413 | |||
414 | pdp = pcp->driDrawablePriv; |
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415 | prp = pcp->driReadablePriv; |
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416 | |||
417 | /* already unbound */ |
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418 | if (!pdp && !prp) |
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419 | return GL_TRUE; |
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420 | |||
421 | driDriverAPI.UnbindContext(pcp); |
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422 | |||
423 | assert(pdp); |
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424 | if (pdp->refcount == 0) { |
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425 | /* ERROR!!! */ |
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426 | return GL_FALSE; |
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427 | } |
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428 | |||
429 | dri_put_drawable(pdp); |
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430 | |||
431 | if (prp != pdp) { |
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432 | if (prp->refcount == 0) { |
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433 | /* ERROR!!! */ |
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434 | return GL_FALSE; |
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435 | } |
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436 | |||
437 | dri_put_drawable(prp); |
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438 | } |
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439 | |||
440 | /* XXX this is disabled so that if we call SwapBuffers on an unbound |
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441 | * window we can determine the last context bound to the window and |
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442 | * use that context's lock. (BrianP, 2-Dec-2000) |
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443 | */ |
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444 | pcp->driDrawablePriv = NULL; |
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445 | pcp->driReadablePriv = NULL; |
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446 | |||
447 | return GL_TRUE; |
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448 | } |
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449 | |||
450 | /*@}*/ |
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451 | |||
452 | |||
453 | static void dri_get_drawable(__DRIdrawable *pdp) |
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454 | { |
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455 | pdp->refcount++; |
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456 | } |
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457 | |||
458 | static void dri_put_drawable(__DRIdrawable *pdp) |
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459 | { |
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460 | if (pdp) { |
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461 | pdp->refcount--; |
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462 | if (pdp->refcount) |
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463 | return; |
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464 | |||
465 | driDriverAPI.DestroyBuffer(pdp); |
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466 | free(pdp); |
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467 | } |
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468 | } |
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469 | |||
470 | static __DRIdrawable * |
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471 | dri2CreateNewDrawable(__DRIscreen *screen, |
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472 | const __DRIconfig *config, |
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473 | void *data) |
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474 | { |
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475 | __DRIdrawable *pdraw; |
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476 | |||
477 | printf("%s: screen %p config %p, data %p\n", |
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478 | __FUNCTION__, screen, config, data); |
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479 | |||
480 | pdraw = malloc(sizeof *pdraw); |
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481 | if (!pdraw) |
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482 | return NULL; |
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483 | |||
484 | pdraw->loaderPrivate = data; |
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485 | |||
486 | pdraw->driScreenPriv = screen; |
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487 | pdraw->driContextPriv = NULL; |
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488 | pdraw->refcount = 0; |
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489 | pdraw->lastStamp = 0; |
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490 | pdraw->w = 0; |
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491 | pdraw->h = 0; |
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492 | |||
493 | dri_get_drawable(pdraw); |
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494 | |||
495 | if (!driDriverAPI.CreateBuffer(screen, pdraw, &config->modes, GL_FALSE)) { |
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496 | free(pdraw); |
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497 | return NULL; |
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498 | } |
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499 | |||
500 | pdraw->dri2.stamp = pdraw->lastStamp + 1; |
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501 | |||
502 | return pdraw; |
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503 | } |
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504 | |||
505 | static void |
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506 | driDestroyDrawable(__DRIdrawable *pdp) |
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507 | { |
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508 | dri_put_drawable(pdp); |
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509 | } |
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510 | |||
511 | static __DRIbuffer * |
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512 | dri2AllocateBuffer(__DRIscreen *screen, |
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513 | unsigned int attachment, unsigned int format, |
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514 | int width, int height) |
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515 | { |
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516 | return driDriverAPI.AllocateBuffer(screen, attachment, format, |
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517 | width, height); |
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518 | } |
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519 | |||
520 | static void |
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521 | dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer) |
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522 | { |
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523 | driDriverAPI.ReleaseBuffer(screen, buffer); |
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524 | } |
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525 | |||
526 | |||
527 | static int |
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528 | dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *val) |
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529 | { |
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530 | if (!driCheckOption(&screen->optionCache, var, DRI_BOOL)) |
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531 | return -1; |
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532 | |||
533 | *val = driQueryOptionb(&screen->optionCache, var); |
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534 | |||
535 | return 0; |
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536 | } |
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537 | |||
538 | static int |
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539 | dri2ConfigQueryi(__DRIscreen *screen, const char *var, GLint *val) |
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540 | { |
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541 | if (!driCheckOption(&screen->optionCache, var, DRI_INT) && |
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542 | !driCheckOption(&screen->optionCache, var, DRI_ENUM)) |
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543 | return -1; |
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544 | |||
545 | *val = driQueryOptioni(&screen->optionCache, var); |
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546 | |||
547 | return 0; |
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548 | } |
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549 | |||
550 | static int |
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551 | dri2ConfigQueryf(__DRIscreen *screen, const char *var, GLfloat *val) |
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552 | { |
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553 | if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT)) |
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554 | return -1; |
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555 | |||
556 | *val = driQueryOptionf(&screen->optionCache, var); |
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557 | |||
558 | return 0; |
||
559 | } |
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560 | |||
561 | static unsigned int |
||
562 | dri2GetAPIMask(__DRIscreen *screen) |
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563 | { |
||
564 | return screen->api_mask; |
||
565 | } |
||
566 | |||
567 | |||
568 | /** Core interface */ |
||
569 | const __DRIcoreExtension driCoreExtension = { |
||
570 | .base = { __DRI_CORE, __DRI_CORE_VERSION }, |
||
571 | |||
572 | .createNewScreen = NULL, |
||
573 | .destroyScreen = driDestroyScreen, |
||
574 | .getExtensions = driGetExtensions, |
||
575 | .getConfigAttrib = driGetConfigAttrib, |
||
576 | .indexConfigAttrib = driIndexConfigAttrib, |
||
577 | .createNewDrawable = NULL, |
||
578 | .destroyDrawable = driDestroyDrawable, |
||
579 | .swapBuffers = NULL, |
||
580 | .createNewContext = NULL, |
||
581 | .copyContext = driCopyContext, |
||
582 | .destroyContext = driDestroyContext, |
||
583 | .bindContext = driBindContext, |
||
584 | .unbindContext = driUnbindContext |
||
585 | }; |
||
586 | |||
587 | /** DRI2 interface */ |
||
588 | const __DRIdri2Extension driDRI2Extension = { |
||
589 | .base = { __DRI_DRI2, 3 }, |
||
590 | |||
591 | .createNewScreen = dri2CreateNewScreen, |
||
592 | .createNewDrawable = dri2CreateNewDrawable, |
||
593 | .createNewContext = dri2CreateNewContext, |
||
594 | .getAPIMask = dri2GetAPIMask, |
||
595 | .createNewContextForAPI = dri2CreateNewContextForAPI, |
||
596 | .allocateBuffer = dri2AllocateBuffer, |
||
597 | .releaseBuffer = dri2ReleaseBuffer, |
||
598 | .createContextAttribs = dri2CreateContextAttribs |
||
599 | }; |
||
600 | |||
601 | const __DRI2configQueryExtension dri2ConfigQueryExtension = { |
||
602 | .base = { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION }, |
||
603 | |||
604 | .configQueryb = dri2ConfigQueryb, |
||
605 | .configQueryi = dri2ConfigQueryi, |
||
606 | .configQueryf = dri2ConfigQueryf, |
||
607 | }; |
||
608 | |||
609 | void |
||
610 | dri2InvalidateDrawable(__DRIdrawable *drawable) |
||
611 | { |
||
612 | drawable->dri2.stamp++; |
||
613 | } |
||
614 | |||
615 | /** |
||
616 | * Check that the gl_framebuffer associated with dPriv is the right size. |
||
617 | * Resize the gl_framebuffer if needed. |
||
618 | * It's expected that the dPriv->driverPrivate member points to a |
||
619 | * gl_framebuffer object. |
||
620 | */ |
||
621 | void |
||
622 | driUpdateFramebufferSize(struct gl_context *ctx, const __DRIdrawable *dPriv) |
||
623 | { |
||
624 | struct gl_framebuffer *fb = (struct gl_framebuffer *) dPriv->driverPrivate; |
||
625 | if (fb && (dPriv->w != fb->Width || dPriv->h != fb->Height)) { |
||
626 | ctx->Driver.ResizeBuffers(ctx, fb, dPriv->w, dPriv->h); |
||
627 | /* if the driver needs the hw lock for ResizeBuffers, the drawable |
||
628 | might have changed again by now */ |
||
629 | assert(fb->Width == dPriv->w); |
||
630 | assert(fb->Height == dPriv->h); |
||
631 | } |
||
632 | }>><>><> |