+/*\r
+ * freeglut_state_x11.c\r
+ *\r
+ * X11-specific freeglut state query methods.\r
+ *\r
+ * Copyright (c) 2012 Stephen J. Baker. All Rights Reserved.\r
+ * Written by John F. Fay, <fayjf@sourceforge.net>\r
+ * Creation date: Sat Feb 4 2012\r
+ *\r
+ * Permission is hereby granted, free of charge, to any person obtaining a\r
+ * copy of this software and associated documentation files (the "Software"),\r
+ * to deal in the Software without restriction, including without limitation\r
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
+ * and/or sell copies of the Software, and to permit persons to whom the\r
+ * Software is furnished to do so, subject to the following conditions:\r
+ *\r
+ * The above copyright notice and this permission notice shall be included\r
+ * in all copies or substantial portions of the Software.\r
+ *\r
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
+ * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
+ */\r
+\r
+#include <GL/freeglut.h>\r
+#include "../Common/freeglut_internal.h"\r
+\r
+/*\r
+ * TODO BEFORE THE STABLE RELEASE:\r
+ *\r
+ * fgPlatformChooseFBConfig() -- OK, but what about glutInitDisplayString()?\r
+ */\r
+\r
+/* A helper function to check if a display mode is possible to use */\r
+#if TARGET_HOST_POSIX_X11\r
+GLXFBConfig* fgPlatformChooseFBConfig( int* numcfgs );\r
+#endif\r
+\r
+/*\r
+ * Queries the GL context about some attributes\r
+ */\r
+int fgPlatformGetConfig( int attribute )\r
+{\r
+ int returnValue = 0;\r
+ int result; /* Not checked */\r
+\r
+ if( fgStructure.CurrentWindow )\r
+ result = glXGetFBConfigAttrib( fgDisplay.pDisplay.Display,\r
+ *(fgStructure.CurrentWindow->Window.pContext.FBConfig),\r
+ attribute,\r
+ &returnValue );\r
+\r
+ return returnValue;\r
+}\r
+\r
+int fgPlatformGlutGet ( GLenum eWhat )\r
+{\r
+ int nsamples = 0;\r
+\r
+ switch( eWhat )\r
+ {\r
+ /*\r
+ * The window/context specific queries are handled mostly by\r
+ * fgPlatformGetConfig().\r
+ */\r
+ case GLUT_WINDOW_NUM_SAMPLES:\r
+#ifdef GLX_VERSION_1_3\r
+ glGetIntegerv(GL_SAMPLES, &nsamples);\r
+#endif\r
+ return nsamples;\r
+\r
+ /*\r
+ * The rest of GLX queries under X are general enough to use a macro to\r
+ * check them\r
+ */\r
+# define GLX_QUERY(a,b) case a: return fgPlatformGetConfig( b );\r
+\r
+ GLX_QUERY( GLUT_WINDOW_RGBA, GLX_RGBA );\r
+ GLX_QUERY( GLUT_WINDOW_DOUBLEBUFFER, GLX_DOUBLEBUFFER );\r
+ GLX_QUERY( GLUT_WINDOW_BUFFER_SIZE, GLX_BUFFER_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_STENCIL_SIZE, GLX_STENCIL_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_DEPTH_SIZE, GLX_DEPTH_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_RED_SIZE, GLX_RED_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_GREEN_SIZE, GLX_GREEN_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_BLUE_SIZE, GLX_BLUE_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_ALPHA_SIZE, GLX_ALPHA_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_ACCUM_RED_SIZE, GLX_ACCUM_RED_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_ACCUM_GREEN_SIZE, GLX_ACCUM_GREEN_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_ACCUM_BLUE_SIZE, GLX_ACCUM_BLUE_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_ACCUM_ALPHA_SIZE, GLX_ACCUM_ALPHA_SIZE );\r
+ GLX_QUERY( GLUT_WINDOW_STEREO, GLX_STEREO );\r
+\r
+# undef GLX_QUERY\r
+\r
+ /* Colormap size is handled in a bit different way than all the rest */\r
+ case GLUT_WINDOW_COLORMAP_SIZE:\r
+ if( (fgPlatformGetConfig( GLX_RGBA )) || (fgStructure.CurrentWindow == NULL) )\r
+ {\r
+ /*\r
+ * We've got a RGBA visual, so there is no colormap at all.\r
+ * The other possibility is that we have no current window set.\r
+ */\r
+ return 0;\r
+ }\r
+ else\r
+ {\r
+ const GLXFBConfig * fbconfig =\r
+ fgStructure.CurrentWindow->Window.pContext.FBConfig;\r
+\r
+ XVisualInfo * visualInfo =\r
+ glXGetVisualFromFBConfig( fgDisplay.pDisplay.Display, *fbconfig );\r
+\r
+ const int result = visualInfo->visual->map_entries;\r
+\r
+ XFree(visualInfo);\r
+\r
+ return result;\r
+ }\r
+\r
+ /*\r
+ * Those calls are somewhat similiar, as they use XGetWindowAttributes()\r
+ * function\r
+ */\r
+ case GLUT_WINDOW_X:\r
+ case GLUT_WINDOW_Y:\r
+ case GLUT_WINDOW_BORDER_WIDTH:\r
+ case GLUT_WINDOW_HEADER_HEIGHT:\r
+ {\r
+ int x, y;\r
+ Window w;\r
+\r
+ if( fgStructure.CurrentWindow == NULL )\r
+ return 0;\r
+\r
+ XTranslateCoordinates(\r
+ fgDisplay.pDisplay.Display,\r
+ fgStructure.CurrentWindow->Window.Handle,\r
+ fgDisplay.pDisplay.RootWindow,\r
+ 0, 0, &x, &y, &w);\r
+\r
+ switch ( eWhat )\r
+ {\r
+ case GLUT_WINDOW_X: return x;\r
+ case GLUT_WINDOW_Y: return y;\r
+ }\r
+\r
+ if ( w == 0 )\r
+ return 0;\r
+ XTranslateCoordinates(\r
+ fgDisplay.pDisplay.Display,\r
+ fgStructure.CurrentWindow->Window.Handle,\r
+ w, 0, 0, &x, &y, &w);\r
+\r
+ switch ( eWhat )\r
+ {\r
+ case GLUT_WINDOW_BORDER_WIDTH: return x;\r
+ case GLUT_WINDOW_HEADER_HEIGHT: return y;\r
+ }\r
+ }\r
+\r
+ case GLUT_WINDOW_WIDTH:\r
+ case GLUT_WINDOW_HEIGHT:\r
+ {\r
+ XWindowAttributes winAttributes;\r
+\r
+ if( fgStructure.CurrentWindow == NULL )\r
+ return 0;\r
+ XGetWindowAttributes(\r
+ fgDisplay.pDisplay.Display,\r
+ fgStructure.CurrentWindow->Window.Handle,\r
+ &winAttributes\r
+ );\r
+ switch ( eWhat )\r
+ {\r
+ case GLUT_WINDOW_WIDTH: return winAttributes.width ;\r
+ case GLUT_WINDOW_HEIGHT: return winAttributes.height ;\r
+ }\r
+ }\r
+\r
+ /* I do not know yet if there will be a fgChooseVisual() function for Win32 */\r
+ case GLUT_DISPLAY_MODE_POSSIBLE:\r
+ {\r
+ /* We should not have to call fgPlatformChooseFBConfig again here. */\r
+ GLXFBConfig * fbconfig;\r
+ int isPossible;\r
+\r
+ fbconfig = fgPlatformChooseFBConfig(NULL);\r
+\r
+ if (fbconfig == NULL)\r
+ {\r
+ isPossible = 0;\r
+ }\r
+ else\r
+ {\r
+ isPossible = 1;\r
+ XFree(fbconfig);\r
+ }\r
+\r
+ return isPossible;\r
+ }\r
+\r
+ /* This is system-dependant */\r
+ case GLUT_WINDOW_FORMAT_ID:\r
+ if( fgStructure.CurrentWindow == NULL )\r
+ return 0;\r
+\r
+ return fgPlatformGetConfig( GLX_VISUAL_ID );\r
+\r
+ default:\r
+ fgWarning( "glutGet(): missing enum handle %d", eWhat );\r
+ break;\r
+ }\r
+}\r
+\r
+\r
+int fgPlatformGlutDeviceGet ( GLenum eWhat )\r
+{\r
+ switch( eWhat )\r
+ {\r
+ case GLUT_HAS_KEYBOARD:\r
+ /*\r
+ * X11 has a core keyboard by definition, although it can\r
+ * be present as a virtual/dummy keyboard. For now, there\r
+ * is no reliable way to tell if a real keyboard is present.\r
+ */\r
+ return 1;\r
+\r
+ /* X11 has a mouse by definition */\r
+ case GLUT_HAS_MOUSE:\r
+ return 1 ;\r
+\r
+ case GLUT_NUM_MOUSE_BUTTONS:\r
+ /* We should be able to pass NULL when the last argument is zero,\r
+ * but at least one X server has a bug where this causes a segfault.\r
+ *\r
+ * In XFree86/Xorg servers, a mouse wheel is seen as two buttons\r
+ * rather than an Axis; "freeglut_main.c" expects this when\r
+ * checking for a wheel event.\r
+ */\r
+ {\r
+ unsigned char map;\r
+ int nbuttons = XGetPointerMapping(fgDisplay.pDisplay.Display, &map,0);\r
+ return nbuttons;\r
+ }\r
+\r
+ default:\r
+ fgWarning( "glutDeviceGet(): missing enum handle %d", eWhat );\r
+ break;\r
+ }\r
+\r
+ /* And now -- the failure. */\r
+ return -1;\r
+}\r
+\r
+int fgPlatformGlutLayerGet( GLenum eWhat )\r
+{\r
+ /*\r
+ * This is easy as layers are not implemented ;-)\r
+ *\r
+ * XXX Can we merge the UNIX/X11 and WIN32 sections? Or\r
+ * XXX is overlay support planned?\r
+ */\r
+ switch( eWhat )\r
+ {\r
+ case GLUT_OVERLAY_POSSIBLE:\r
+ return 0;\r
+\r
+ case GLUT_LAYER_IN_USE:\r
+ return GLUT_NORMAL;\r
+\r
+ case GLUT_HAS_OVERLAY:\r
+ return 0;\r
+\r
+ case GLUT_TRANSPARENT_INDEX:\r
+ /*\r
+ * Return just anything, which is always defined as zero\r
+ *\r
+ * XXX HUH?\r
+ */\r
+ return 0;\r
+\r
+ case GLUT_NORMAL_DAMAGED:\r
+ /* XXX Actually I do not know. Maybe. */\r
+ return 0;\r
+\r
+ case GLUT_OVERLAY_DAMAGED:\r
+ return -1;\r
+\r
+ default:\r
+ fgWarning( "glutLayerGet(): missing enum handle %d", eWhat );\r
+ break;\r
+ }\r
+\r
+ /* And fail. That's good. Programs do love failing. */\r
+ return -1;\r
+}\r
+\r
+\r
+int *fgPlatformGlutGetModeValues(GLenum eWhat, int *size)\r
+{\r
+ int *array;\r
+\r
+ int attributes[9];\r
+ GLXFBConfig * fbconfigArray; /* Array of FBConfigs */\r
+ int fbconfigArraySize; /* Number of FBConfigs in the array */\r
+ int attribute_name = 0;\r
+\r
+ array = NULL;\r
+ *size = 0;\r
+\r
+ switch (eWhat)\r
+ {\r
+ case GLUT_AUX:\r
+ case GLUT_MULTISAMPLE:\r
+\r
+ attributes[0] = GLX_BUFFER_SIZE;\r
+ attributes[1] = GLX_DONT_CARE;\r
+\r
+ switch (eWhat)\r
+ {\r
+ case GLUT_AUX:\r
+ /*\r
+ FBConfigs are now sorted by increasing number of auxiliary\r
+ buffers. We want at least one buffer.\r
+ */\r
+ attributes[2] = GLX_AUX_BUFFERS;\r
+ attributes[3] = 1;\r
+ attributes[4] = None;\r
+\r
+ attribute_name = GLX_AUX_BUFFERS;\r
+\r
+ break;\r
+\r
+\r
+ case GLUT_MULTISAMPLE:\r
+ attributes[2] = GLX_AUX_BUFFERS;\r
+ attributes[3] = GLX_DONT_CARE;\r
+ attributes[4] = GLX_SAMPLE_BUFFERS;\r
+ attributes[5] = 1;\r
+ /*\r
+ FBConfigs are now sorted by increasing number of samples per\r
+ pixel. We want at least one sample.\r
+ */\r
+ attributes[6] = GLX_SAMPLES;\r
+ attributes[7] = 1;\r
+ attributes[8] = None;\r
+\r
+ attribute_name = GLX_SAMPLES;\r
+\r
+ break;\r
+ }\r
+\r
+ fbconfigArray = glXChooseFBConfig(fgDisplay.pDisplay.Display,\r
+ fgDisplay.pDisplay.Screen,\r
+ attributes,\r
+ &fbconfigArraySize);\r
+\r
+ if (fbconfigArray != NULL)\r
+ {\r
+ int * temp_array;\r
+ int result; /* Returned by glXGetFBConfigAttrib. Not checked. */\r
+ int previous_value;\r
+ int i;\r
+\r
+ temp_array = malloc(sizeof(int) * fbconfigArraySize);\r
+ previous_value = 0;\r
+\r
+ for (i = 0; i < fbconfigArraySize; i++)\r
+ {\r
+ int value;\r
+\r
+ result = glXGetFBConfigAttrib(fgDisplay.pDisplay.Display,\r
+ fbconfigArray[i],\r
+ attribute_name,\r
+ &value);\r
+ if (value > previous_value)\r
+ {\r
+ temp_array[*size] = value;\r
+ previous_value = value;\r
+ (*size)++;\r
+ }\r
+ }\r
+\r
+ array = malloc(sizeof(int) * (*size));\r
+ for (i = 0; i < *size; i++)\r
+ {\r
+ array[i] = temp_array[i];\r
+ }\r
+\r
+ free(temp_array);\r
+ XFree(fbconfigArray);\r
+ }\r
+\r
+ break;\r
+\r
+ default:\r
+ break;\r
+ }\r
+\r
+ return array;\r
+}\r
+\r
+\r
projects / freeglut / blobdiff