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5564 | serge | 1 | /* |
2 | * Copyright © 2010 Intel Corporation |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Soft- |
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6 | * ware"), to deal in the Software without restriction, including without |
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7 | * limitation the rights to use, copy, modify, merge, publish, distribute, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, provided that the above copyright |
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10 | * notice(s) and this permission notice appear in all copies of the Soft- |
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11 | * ware and that both the above copyright notice(s) and this permission |
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12 | * notice appear in supporting documentation. |
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13 | * |
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14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL- |
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16 | * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY |
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17 | * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN |
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18 | * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE- |
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19 | * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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20 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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21 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR- |
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22 | * MANCE OF THIS SOFTWARE. |
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23 | * |
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24 | * Except as contained in this notice, the name of a copyright holder shall |
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25 | * not be used in advertising or otherwise to promote the sale, use or |
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26 | * other dealings in this Software without prior written authorization of |
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27 | * the copyright holder. |
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28 | * |
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29 | * Authors: |
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30 | * Kristian Høgsberg (krh@bitplanet.net) |
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31 | */ |
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32 | |||
33 | #include "glapi.h" |
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34 | #include "glxclient.h" |
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35 | |||
36 | #ifndef GLX_USE_APPLEGL |
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37 | |||
38 | extern struct _glapi_table *__glXNewIndirectAPI(void); |
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39 | |||
40 | /* |
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41 | ** All indirect rendering contexts will share the same indirect dispatch table. |
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42 | */ |
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43 | static struct _glapi_table *IndirectAPI = NULL; |
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44 | |||
45 | static void |
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46 | indirect_destroy_context(struct glx_context *gc) |
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47 | { |
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48 | __glXFreeVertexArrayState(gc); |
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49 | |||
50 | free((char *) gc->vendor); |
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51 | free((char *) gc->renderer); |
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52 | free((char *) gc->version); |
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53 | free((char *) gc->extensions); |
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54 | __glFreeAttributeState(gc); |
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55 | free((char *) gc->buf); |
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56 | free((char *) gc->client_state_private); |
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57 | free((char *) gc); |
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58 | } |
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59 | |||
60 | static Bool |
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61 | SendMakeCurrentRequest(Display * dpy, CARD8 opcode, |
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62 | GLXContextID gc_id, GLXContextTag gc_tag, |
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63 | GLXDrawable draw, GLXDrawable read, |
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64 | GLXContextTag *out_tag) |
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65 | { |
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66 | xGLXMakeCurrentReply reply; |
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67 | Bool ret; |
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68 | |||
69 | LockDisplay(dpy); |
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70 | |||
71 | if (draw == read) { |
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72 | xGLXMakeCurrentReq *req; |
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73 | |||
74 | GetReq(GLXMakeCurrent, req); |
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75 | req->reqType = opcode; |
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76 | req->glxCode = X_GLXMakeCurrent; |
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77 | req->drawable = draw; |
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78 | req->context = gc_id; |
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79 | req->oldContextTag = gc_tag; |
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80 | } |
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81 | else { |
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82 | struct glx_display *priv = __glXInitialize(dpy); |
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83 | |||
84 | /* If the server can support the GLX 1.3 version, we should |
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85 | * perfer that. Not only that, some servers support GLX 1.3 but |
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86 | * not the SGI extension. |
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87 | */ |
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88 | |||
89 | if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) { |
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90 | xGLXMakeContextCurrentReq *req; |
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91 | |||
92 | GetReq(GLXMakeContextCurrent, req); |
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93 | req->reqType = opcode; |
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94 | req->glxCode = X_GLXMakeContextCurrent; |
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95 | req->drawable = draw; |
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96 | req->readdrawable = read; |
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97 | req->context = gc_id; |
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98 | req->oldContextTag = gc_tag; |
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99 | } |
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100 | else { |
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101 | xGLXVendorPrivateWithReplyReq *vpreq; |
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102 | xGLXMakeCurrentReadSGIReq *req; |
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103 | |||
104 | GetReqExtra(GLXVendorPrivateWithReply, |
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105 | sz_xGLXMakeCurrentReadSGIReq - |
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106 | sz_xGLXVendorPrivateWithReplyReq, vpreq); |
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107 | req = (xGLXMakeCurrentReadSGIReq *) vpreq; |
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108 | req->reqType = opcode; |
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109 | req->glxCode = X_GLXVendorPrivateWithReply; |
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110 | req->vendorCode = X_GLXvop_MakeCurrentReadSGI; |
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111 | req->drawable = draw; |
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112 | req->readable = read; |
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113 | req->context = gc_id; |
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114 | req->oldContextTag = gc_tag; |
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115 | } |
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116 | } |
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117 | |||
118 | ret = _XReply(dpy, (xReply *) &reply, 0, False); |
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119 | |||
120 | if (out_tag) |
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121 | *out_tag = reply.contextTag; |
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122 | |||
123 | UnlockDisplay(dpy); |
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124 | SyncHandle(); |
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125 | |||
126 | return ret; |
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127 | } |
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128 | |||
129 | static int |
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130 | indirect_bind_context(struct glx_context *gc, struct glx_context *old, |
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131 | GLXDrawable draw, GLXDrawable read) |
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132 | { |
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133 | GLXContextTag tag; |
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134 | __GLXattribute *state; |
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135 | Display *dpy = gc->psc->dpy; |
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136 | int opcode = __glXSetupForCommand(dpy); |
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137 | Bool sent; |
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138 | |||
139 | if (old != &dummyContext && !old->isDirect && old->psc->dpy == dpy) { |
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140 | tag = old->currentContextTag; |
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141 | old->currentContextTag = 0; |
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142 | } else { |
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143 | tag = 0; |
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144 | } |
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145 | |||
146 | sent = SendMakeCurrentRequest(dpy, opcode, gc->xid, tag, draw, read, |
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147 | &gc->currentContextTag); |
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148 | |||
149 | if (!IndirectAPI) |
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150 | IndirectAPI = __glXNewIndirectAPI(); |
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151 | _glapi_set_dispatch(IndirectAPI); |
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152 | |||
153 | state = gc->client_state_private; |
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154 | if (state->array_state == NULL) { |
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155 | glGetString(GL_EXTENSIONS); |
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156 | glGetString(GL_VERSION); |
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157 | __glXInitVertexArrayState(gc); |
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158 | } |
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159 | |||
160 | return !sent; |
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161 | } |
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162 | |||
163 | static void |
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164 | indirect_unbind_context(struct glx_context *gc, struct glx_context *new) |
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165 | { |
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166 | Display *dpy = gc->psc->dpy; |
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167 | int opcode = __glXSetupForCommand(dpy); |
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168 | |||
169 | if (gc == new) |
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170 | return; |
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171 | |||
172 | /* We are either switching to no context, away from a indirect |
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173 | * context to a direct context or from one dpy to another and have |
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174 | * to send a request to the dpy to unbind the previous context. |
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175 | */ |
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176 | if (!new || new->isDirect || new->psc->dpy != dpy) { |
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177 | SendMakeCurrentRequest(dpy, opcode, None, |
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178 | gc->currentContextTag, None, None, NULL); |
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179 | gc->currentContextTag = 0; |
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180 | } |
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181 | } |
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182 | |||
183 | static void |
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184 | indirect_wait_gl(struct glx_context *gc) |
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185 | { |
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186 | xGLXWaitGLReq *req; |
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187 | Display *dpy = gc->currentDpy; |
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188 | |||
189 | /* Flush any pending commands out */ |
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190 | __glXFlushRenderBuffer(gc, gc->pc); |
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191 | |||
192 | /* Send the glXWaitGL request */ |
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193 | LockDisplay(dpy); |
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194 | GetReq(GLXWaitGL, req); |
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195 | req->reqType = gc->majorOpcode; |
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196 | req->glxCode = X_GLXWaitGL; |
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197 | req->contextTag = gc->currentContextTag; |
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198 | UnlockDisplay(dpy); |
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199 | SyncHandle(); |
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200 | } |
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201 | |||
202 | static void |
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203 | indirect_wait_x(struct glx_context *gc) |
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204 | { |
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205 | xGLXWaitXReq *req; |
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206 | Display *dpy = gc->currentDpy; |
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207 | |||
208 | /* Flush any pending commands out */ |
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209 | __glXFlushRenderBuffer(gc, gc->pc); |
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210 | |||
211 | LockDisplay(dpy); |
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212 | GetReq(GLXWaitX, req); |
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213 | req->reqType = gc->majorOpcode; |
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214 | req->glxCode = X_GLXWaitX; |
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215 | req->contextTag = gc->currentContextTag; |
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216 | UnlockDisplay(dpy); |
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217 | SyncHandle(); |
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218 | } |
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219 | |||
220 | static void |
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221 | indirect_use_x_font(struct glx_context *gc, |
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222 | Font font, int first, int count, int listBase) |
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223 | { |
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224 | xGLXUseXFontReq *req; |
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225 | Display *dpy = gc->currentDpy; |
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226 | |||
227 | /* Flush any pending commands out */ |
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228 | __glXFlushRenderBuffer(gc, gc->pc); |
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229 | |||
230 | /* Send the glXUseFont request */ |
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231 | LockDisplay(dpy); |
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232 | GetReq(GLXUseXFont, req); |
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233 | req->reqType = gc->majorOpcode; |
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234 | req->glxCode = X_GLXUseXFont; |
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235 | req->contextTag = gc->currentContextTag; |
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236 | req->font = font; |
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237 | req->first = first; |
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238 | req->count = count; |
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239 | req->listBase = listBase; |
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240 | UnlockDisplay(dpy); |
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241 | SyncHandle(); |
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242 | } |
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243 | |||
244 | static void |
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245 | indirect_bind_tex_image(Display * dpy, |
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246 | GLXDrawable drawable, |
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247 | int buffer, const int *attrib_list) |
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248 | { |
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249 | xGLXVendorPrivateReq *req; |
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250 | struct glx_context *gc = __glXGetCurrentContext(); |
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251 | CARD32 *drawable_ptr; |
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252 | INT32 *buffer_ptr; |
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253 | CARD32 *num_attrib_ptr; |
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254 | CARD32 *attrib_ptr; |
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255 | CARD8 opcode; |
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256 | unsigned int i; |
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257 | |||
258 | i = 0; |
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259 | if (attrib_list) { |
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260 | while (attrib_list[i * 2] != None) |
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261 | i++; |
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262 | } |
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263 | |||
264 | opcode = __glXSetupForCommand(dpy); |
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265 | if (!opcode) |
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266 | return; |
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267 | |||
268 | LockDisplay(dpy); |
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269 | GetReqExtra(GLXVendorPrivate, 12 + 8 * i, req); |
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270 | req->reqType = opcode; |
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271 | req->glxCode = X_GLXVendorPrivate; |
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272 | req->vendorCode = X_GLXvop_BindTexImageEXT; |
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273 | req->contextTag = gc->currentContextTag; |
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274 | |||
275 | drawable_ptr = (CARD32 *) (req + 1); |
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276 | buffer_ptr = (INT32 *) (drawable_ptr + 1); |
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277 | num_attrib_ptr = (CARD32 *) (buffer_ptr + 1); |
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278 | attrib_ptr = (CARD32 *) (num_attrib_ptr + 1); |
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279 | |||
280 | *drawable_ptr = drawable; |
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281 | *buffer_ptr = buffer; |
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282 | *num_attrib_ptr = (CARD32) i; |
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283 | |||
284 | i = 0; |
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285 | if (attrib_list) { |
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286 | while (attrib_list[i * 2] != None) { |
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287 | *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0]; |
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288 | *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1]; |
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289 | i++; |
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290 | } |
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291 | } |
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292 | |||
293 | UnlockDisplay(dpy); |
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294 | SyncHandle(); |
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295 | } |
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296 | |||
297 | static void |
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298 | indirect_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer) |
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299 | { |
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300 | xGLXVendorPrivateReq *req; |
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301 | struct glx_context *gc = __glXGetCurrentContext(); |
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302 | CARD32 *drawable_ptr; |
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303 | INT32 *buffer_ptr; |
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304 | CARD8 opcode; |
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305 | |||
306 | opcode = __glXSetupForCommand(dpy); |
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307 | if (!opcode) |
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308 | return; |
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309 | |||
310 | LockDisplay(dpy); |
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311 | GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32), req); |
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312 | req->reqType = opcode; |
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313 | req->glxCode = X_GLXVendorPrivate; |
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314 | req->vendorCode = X_GLXvop_ReleaseTexImageEXT; |
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315 | req->contextTag = gc->currentContextTag; |
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316 | |||
317 | drawable_ptr = (CARD32 *) (req + 1); |
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318 | buffer_ptr = (INT32 *) (drawable_ptr + 1); |
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319 | |||
320 | *drawable_ptr = drawable; |
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321 | *buffer_ptr = buffer; |
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322 | |||
323 | UnlockDisplay(dpy); |
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324 | SyncHandle(); |
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325 | } |
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326 | |||
327 | static const struct glx_context_vtable indirect_context_vtable = { |
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328 | .destroy = indirect_destroy_context, |
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329 | .bind = indirect_bind_context, |
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330 | .unbind = indirect_unbind_context, |
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331 | .wait_gl = indirect_wait_gl, |
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332 | .wait_x = indirect_wait_x, |
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333 | .use_x_font = indirect_use_x_font, |
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334 | .bind_tex_image = indirect_bind_tex_image, |
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335 | .release_tex_image = indirect_release_tex_image, |
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336 | .get_proc_address = NULL, |
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337 | }; |
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338 | |||
339 | /** |
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340 | * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new |
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341 | * function called \c __glXAllocateClientState that allocates the memory and |
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342 | * does all the initialization (including the pixel pack / unpack). |
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343 | * |
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344 | * \note |
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345 | * This function is \b not the place to validate the context creation |
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346 | * parameters. It is just the allocator for the \c glx_context. |
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347 | */ |
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348 | _X_HIDDEN struct glx_context * |
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349 | indirect_create_context(struct glx_screen *psc, |
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350 | struct glx_config *mode, |
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351 | struct glx_context *shareList, int renderType) |
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352 | { |
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353 | struct glx_context *gc; |
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354 | int bufSize; |
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355 | CARD8 opcode; |
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356 | __GLXattribute *state; |
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357 | |||
358 | opcode = __glXSetupForCommand(psc->dpy); |
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359 | if (!opcode) { |
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360 | return NULL; |
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361 | } |
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362 | |||
363 | /* Allocate our context record */ |
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364 | gc = calloc(1, sizeof *gc); |
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365 | if (!gc) { |
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366 | /* Out of memory */ |
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367 | return NULL; |
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368 | } |
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369 | |||
370 | glx_context_init(gc, psc, mode); |
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371 | gc->isDirect = GL_FALSE; |
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372 | gc->vtable = &indirect_context_vtable; |
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373 | state = calloc(1, sizeof(struct __GLXattributeRec)); |
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374 | gc->renderType = renderType; |
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375 | |||
376 | if (state == NULL) { |
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377 | /* Out of memory */ |
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378 | free(gc); |
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379 | return NULL; |
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380 | } |
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381 | gc->client_state_private = state; |
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382 | state->NoDrawArraysProtocol = (getenv("LIBGL_NO_DRAWARRAYS") != NULL); |
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383 | |||
384 | /* |
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385 | ** Create a temporary buffer to hold GLX rendering commands. The size |
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386 | ** of the buffer is selected so that the maximum number of GLX rendering |
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387 | ** commands can fit in a single X packet and still have room in the X |
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388 | ** packet for the GLXRenderReq header. |
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389 | */ |
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390 | |||
391 | bufSize = (XMaxRequestSize(psc->dpy) * 4) - sz_xGLXRenderReq; |
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392 | gc->buf = malloc(bufSize); |
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393 | if (!gc->buf) { |
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394 | free(gc->client_state_private); |
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395 | free(gc); |
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396 | return NULL; |
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397 | } |
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398 | gc->bufSize = bufSize; |
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399 | |||
400 | /* Fill in the new context */ |
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401 | gc->renderMode = GL_RENDER; |
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402 | |||
403 | state->storePack.alignment = 4; |
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404 | state->storeUnpack.alignment = 4; |
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405 | |||
406 | gc->attributes.stackPointer = &gc->attributes.stack[0]; |
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407 | |||
408 | /* |
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409 | ** PERFORMANCE NOTE: A mode dependent fill image can speed things up. |
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410 | */ |
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411 | gc->fillImage = __glFillImage; |
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412 | gc->pc = gc->buf; |
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413 | gc->bufEnd = gc->buf + bufSize; |
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414 | gc->isDirect = GL_FALSE; |
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415 | if (__glXDebug) { |
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416 | /* |
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417 | ** Set limit register so that there will be one command per packet |
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418 | */ |
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419 | gc->limit = gc->buf; |
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420 | } |
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421 | else { |
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422 | gc->limit = gc->buf + bufSize - __GLX_BUFFER_LIMIT_SIZE; |
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423 | } |
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424 | gc->majorOpcode = opcode; |
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425 | |||
426 | /* |
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427 | ** Constrain the maximum drawing command size allowed to be |
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428 | ** transfered using the X_GLXRender protocol request. First |
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429 | ** constrain by a software limit, then constrain by the protocl |
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430 | ** limit. |
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431 | */ |
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432 | if (bufSize > __GLX_RENDER_CMD_SIZE_LIMIT) { |
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433 | bufSize = __GLX_RENDER_CMD_SIZE_LIMIT; |
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434 | } |
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435 | if (bufSize > __GLX_MAX_RENDER_CMD_SIZE) { |
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436 | bufSize = __GLX_MAX_RENDER_CMD_SIZE; |
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437 | } |
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438 | gc->maxSmallRenderCommandSize = bufSize; |
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439 | |||
440 | |||
441 | return gc; |
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442 | } |
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443 | |||
444 | _X_HIDDEN struct glx_context * |
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445 | indirect_create_context_attribs(struct glx_screen *base, |
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446 | struct glx_config *config_base, |
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447 | struct glx_context *shareList, |
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448 | unsigned num_attribs, |
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449 | const uint32_t *attribs, |
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450 | unsigned *error) |
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451 | { |
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452 | int renderType = GLX_RGBA_TYPE; |
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453 | unsigned i; |
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454 | |||
455 | /* The error parameter is only used on the server so that correct GLX |
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456 | * protocol errors can be generated. On the client, it can be ignored. |
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457 | */ |
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458 | (void) error; |
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459 | |||
460 | /* All of the attribute validation for indirect contexts is handled on the |
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461 | * server, so there's not much to do here. Still, we need to parse the |
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462 | * attributes to correctly set renderType. |
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463 | */ |
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464 | for (i = 0; i < num_attribs; i++) { |
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465 | if (attribs[i * 2] == GLX_RENDER_TYPE) |
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466 | renderType = attribs[i * 2 + 1]; |
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467 | } |
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468 | |||
469 | return indirect_create_context(base, config_base, shareList, renderType); |
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470 | } |
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471 | |||
472 | static const struct glx_screen_vtable indirect_screen_vtable = { |
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473 | .create_context = indirect_create_context, |
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474 | .create_context_attribs = indirect_create_context_attribs, |
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475 | .query_renderer_integer = NULL, |
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476 | .query_renderer_string = NULL, |
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477 | }; |
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478 | |||
479 | _X_HIDDEN struct glx_screen * |
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480 | indirect_create_screen(int screen, struct glx_display * priv) |
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481 | { |
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482 | struct glx_screen *psc; |
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483 | |||
484 | psc = calloc(1, sizeof *psc); |
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485 | if (psc == NULL) |
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486 | return NULL; |
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487 | |||
488 | glx_screen_init(psc, screen, priv); |
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489 | psc->vtable = &indirect_screen_vtable; |
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490 | |||
491 | return psc; |
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492 | } |
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493 | |||
494 | #endif> |