X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fx11%2Ffreeglut_state_x11.c;h=1cc4d0cfa13bf14b4a9d008a866212b7eb53ccd3;hb=fd07952449ad7b1fc6cfed569d23677f2b816e40;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=23115ad49ced2f295f719e8cea6acad802402cdb;p=freeglut diff --git a/src/x11/freeglut_state_x11.c b/src/x11/freeglut_state_x11.c index e69de29..1cc4d0c 100644 --- a/src/x11/freeglut_state_x11.c +++ b/src/x11/freeglut_state_x11.c @@ -0,0 +1,404 @@ +/* + * freeglut_state_x11.c + * + * X11-specific freeglut state query methods. + * + * Copyright (c) 2012 Stephen J. Baker. All Rights Reserved. + * Written by John F. Fay, + * Creation date: Sat Feb 4 2012 + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include +#include "../Common/freeglut_internal.h" + +/* + * TODO BEFORE THE STABLE RELEASE: + * + * fgPlatformChooseFBConfig() -- OK, but what about glutInitDisplayString()? + */ + +/* A helper function to check if a display mode is possible to use */ +GLXFBConfig* fgPlatformChooseFBConfig( int* numcfgs ); + +/* + * Queries the GL context about some attributes + */ +int fgPlatformGetConfig( int attribute ) +{ + int returnValue = 0; + int result; /* Not checked */ + + if( fgStructure.CurrentWindow ) + result = glXGetFBConfigAttrib( fgDisplay.pDisplay.Display, + *(fgStructure.CurrentWindow->Window.pContext.FBConfig), + attribute, + &returnValue ); + + return returnValue; +} + +int fgPlatformGlutGet ( GLenum eWhat ) +{ + int nsamples = 0; + + switch( eWhat ) + { + /* + * The window/context specific queries are handled mostly by + * fgPlatformGetConfig(). + */ + case GLUT_WINDOW_NUM_SAMPLES: +#ifdef GLX_VERSION_1_3 + glGetIntegerv(GL_SAMPLES, &nsamples); +#endif + return nsamples; + + /* + * The rest of GLX queries under X are general enough to use a macro to + * check them + */ +# define GLX_QUERY(a,b) case a: return fgPlatformGetConfig( b ); + + GLX_QUERY( GLUT_WINDOW_RGBA, GLX_RGBA ); + GLX_QUERY( GLUT_WINDOW_DOUBLEBUFFER, GLX_DOUBLEBUFFER ); + GLX_QUERY( GLUT_WINDOW_BUFFER_SIZE, GLX_BUFFER_SIZE ); + GLX_QUERY( GLUT_WINDOW_STENCIL_SIZE, GLX_STENCIL_SIZE ); + GLX_QUERY( GLUT_WINDOW_DEPTH_SIZE, GLX_DEPTH_SIZE ); + GLX_QUERY( GLUT_WINDOW_RED_SIZE, GLX_RED_SIZE ); + GLX_QUERY( GLUT_WINDOW_GREEN_SIZE, GLX_GREEN_SIZE ); + GLX_QUERY( GLUT_WINDOW_BLUE_SIZE, GLX_BLUE_SIZE ); + GLX_QUERY( GLUT_WINDOW_ALPHA_SIZE, GLX_ALPHA_SIZE ); + GLX_QUERY( GLUT_WINDOW_ACCUM_RED_SIZE, GLX_ACCUM_RED_SIZE ); + GLX_QUERY( GLUT_WINDOW_ACCUM_GREEN_SIZE, GLX_ACCUM_GREEN_SIZE ); + GLX_QUERY( GLUT_WINDOW_ACCUM_BLUE_SIZE, GLX_ACCUM_BLUE_SIZE ); + GLX_QUERY( GLUT_WINDOW_ACCUM_ALPHA_SIZE, GLX_ACCUM_ALPHA_SIZE ); + GLX_QUERY( GLUT_WINDOW_STEREO, GLX_STEREO ); + +# undef GLX_QUERY + + /* Colormap size is handled in a bit different way than all the rest */ + case GLUT_WINDOW_COLORMAP_SIZE: + if( (fgPlatformGetConfig( GLX_RGBA )) || (fgStructure.CurrentWindow == NULL) ) + { + /* + * We've got a RGBA visual, so there is no colormap at all. + * The other possibility is that we have no current window set. + */ + return 0; + } + else + { + const GLXFBConfig * fbconfig = + fgStructure.CurrentWindow->Window.pContext.FBConfig; + + XVisualInfo * visualInfo = + glXGetVisualFromFBConfig( fgDisplay.pDisplay.Display, *fbconfig ); + + const int result = visualInfo->visual->map_entries; + + XFree(visualInfo); + + return result; + } + + /* + * Those calls are somewhat similiar, as they use XGetWindowAttributes() + * function + */ + case GLUT_WINDOW_X: + case GLUT_WINDOW_Y: + case GLUT_WINDOW_BORDER_WIDTH: + case GLUT_WINDOW_HEADER_HEIGHT: + { + int x, y; + Window w; + + if( fgStructure.CurrentWindow == NULL ) + return 0; + + XTranslateCoordinates( + fgDisplay.pDisplay.Display, + fgStructure.CurrentWindow->Window.Handle, + fgDisplay.pDisplay.RootWindow, + 0, 0, &x, &y, &w); + + switch ( eWhat ) + { + case GLUT_WINDOW_X: return x; + case GLUT_WINDOW_Y: return y; + } + + if ( w == 0 ) + return 0; + XTranslateCoordinates( + fgDisplay.pDisplay.Display, + fgStructure.CurrentWindow->Window.Handle, + w, 0, 0, &x, &y, &w); + + switch ( eWhat ) + { + case GLUT_WINDOW_BORDER_WIDTH: return x; + case GLUT_WINDOW_HEADER_HEIGHT: return y; + } + } + + case GLUT_WINDOW_WIDTH: + case GLUT_WINDOW_HEIGHT: + { + XWindowAttributes winAttributes; + + if( fgStructure.CurrentWindow == NULL ) + return 0; + XGetWindowAttributes( + fgDisplay.pDisplay.Display, + fgStructure.CurrentWindow->Window.Handle, + &winAttributes + ); + switch ( eWhat ) + { + case GLUT_WINDOW_WIDTH: return winAttributes.width ; + case GLUT_WINDOW_HEIGHT: return winAttributes.height ; + } + } + + /* I do not know yet if there will be a fgChooseVisual() function for Win32 */ + case GLUT_DISPLAY_MODE_POSSIBLE: + { + /* We should not have to call fgPlatformChooseFBConfig again here. */ + GLXFBConfig * fbconfig; + int isPossible; + + fbconfig = fgPlatformChooseFBConfig(NULL); + + if (fbconfig == NULL) + { + isPossible = 0; + } + else + { + isPossible = 1; + XFree(fbconfig); + } + + return isPossible; + } + + /* This is system-dependant */ + case GLUT_WINDOW_FORMAT_ID: + if( fgStructure.CurrentWindow == NULL ) + return 0; + + return fgPlatformGetConfig( GLX_VISUAL_ID ); + + default: + fgWarning( "glutGet(): missing enum handle %d", eWhat ); + break; + } +} + + +int fgPlatformGlutDeviceGet ( GLenum eWhat ) +{ + switch( eWhat ) + { + case GLUT_HAS_KEYBOARD: + /* + * X11 has a core keyboard by definition, although it can + * be present as a virtual/dummy keyboard. For now, there + * is no reliable way to tell if a real keyboard is present. + */ + return 1; + + /* X11 has a mouse by definition */ + case GLUT_HAS_MOUSE: + return 1 ; + + case GLUT_NUM_MOUSE_BUTTONS: + /* We should be able to pass NULL when the last argument is zero, + * but at least one X server has a bug where this causes a segfault. + * + * In XFree86/Xorg servers, a mouse wheel is seen as two buttons + * rather than an Axis; "freeglut_main.c" expects this when + * checking for a wheel event. + */ + { + unsigned char map; + int nbuttons = XGetPointerMapping(fgDisplay.pDisplay.Display, &map,0); + return nbuttons; + } + + default: + fgWarning( "glutDeviceGet(): missing enum handle %d", eWhat ); + break; + } + + /* And now -- the failure. */ + return -1; +} + +int fgPlatformGlutLayerGet( GLenum eWhat ) +{ + /* + * This is easy as layers are not implemented ;-) + * + * XXX Can we merge the UNIX/X11 and WIN32 sections? Or + * XXX is overlay support planned? + */ + switch( eWhat ) + { + case GLUT_OVERLAY_POSSIBLE: + return 0; + + case GLUT_LAYER_IN_USE: + return GLUT_NORMAL; + + case GLUT_HAS_OVERLAY: + return 0; + + case GLUT_TRANSPARENT_INDEX: + /* + * Return just anything, which is always defined as zero + * + * XXX HUH? + */ + return 0; + + case GLUT_NORMAL_DAMAGED: + /* XXX Actually I do not know. Maybe. */ + return 0; + + case GLUT_OVERLAY_DAMAGED: + return -1; + + default: + fgWarning( "glutLayerGet(): missing enum handle %d", eWhat ); + break; + } + + /* And fail. That's good. Programs do love failing. */ + return -1; +} + + +int *fgPlatformGlutGetModeValues(GLenum eWhat, int *size) +{ + int *array; + + int attributes[9]; + GLXFBConfig * fbconfigArray; /* Array of FBConfigs */ + int fbconfigArraySize; /* Number of FBConfigs in the array */ + int attribute_name = 0; + + array = NULL; + *size = 0; + + switch (eWhat) + { + case GLUT_AUX: + case GLUT_MULTISAMPLE: + + attributes[0] = GLX_BUFFER_SIZE; + attributes[1] = GLX_DONT_CARE; + + switch (eWhat) + { + case GLUT_AUX: + /* + FBConfigs are now sorted by increasing number of auxiliary + buffers. We want at least one buffer. + */ + attributes[2] = GLX_AUX_BUFFERS; + attributes[3] = 1; + attributes[4] = None; + + attribute_name = GLX_AUX_BUFFERS; + + break; + + + case GLUT_MULTISAMPLE: + attributes[2] = GLX_AUX_BUFFERS; + attributes[3] = GLX_DONT_CARE; + attributes[4] = GLX_SAMPLE_BUFFERS; + attributes[5] = 1; + /* + FBConfigs are now sorted by increasing number of samples per + pixel. We want at least one sample. + */ + attributes[6] = GLX_SAMPLES; + attributes[7] = 1; + attributes[8] = None; + + attribute_name = GLX_SAMPLES; + + break; + } + + fbconfigArray = glXChooseFBConfig(fgDisplay.pDisplay.Display, + fgDisplay.pDisplay.Screen, + attributes, + &fbconfigArraySize); + + if (fbconfigArray != NULL) + { + int * temp_array; + int result; /* Returned by glXGetFBConfigAttrib. Not checked. */ + int previous_value; + int i; + + temp_array = malloc(sizeof(int) * fbconfigArraySize); + previous_value = 0; + + for (i = 0; i < fbconfigArraySize; i++) + { + int value; + + result = glXGetFBConfigAttrib(fgDisplay.pDisplay.Display, + fbconfigArray[i], + attribute_name, + &value); + if (value > previous_value) + { + temp_array[*size] = value; + previous_value = value; + (*size)++; + } + } + + array = malloc(sizeof(int) * (*size)); + for (i = 0; i < *size; i++) + { + array[i] = temp_array[i]; + } + + free(temp_array); + XFree(fbconfigArray); + } + + break; + + default: + break; + } + + return array; +} + +