X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fx11%2Ffg_state_x11_glx.c;fp=src%2Fx11%2Ffg_state_x11_glx.c;h=bd2b35e1f03f5c8f121132f62c9d7bcdc8b4e7c3;hb=6affa9c301ebc731618321b565fbdacb760128ce;hp=0000000000000000000000000000000000000000;hpb=b744f1401b990f642e96d4c65cc86eca5224efd1;p=freeglut diff --git a/src/x11/fg_state_x11_glx.c b/src/x11/fg_state_x11_glx.c new file mode 100644 index 0000000..bd2b35e --- /dev/null +++ b/src/x11/fg_state_x11_glx.c @@ -0,0 +1,213 @@ +/* + * fg_state_x11_glx.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 "fg_internal.h" + +/* + * 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 fghPlatformGlutGetGLX ( GLenum eWhat ) +{ + switch( eWhat ) + { + /* + * The window/context specific queries are handled mostly by + * fgPlatformGetConfig(). + */ + case GLUT_WINDOW_NUM_SAMPLES: + { + int nsamples = 0; +#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 + + /* 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 fghChooseConfig again here. */ + GLXFBConfig config; + return fghChooseConfig(&config); + } + + /* 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; + } + + 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; +}