/* * Copyright (c) 2007, 2008 Apple Inc. * Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved. * Copyright (c) 2002 Greg Parker. All Rights Reserved. * * Portions of this file are copied from Mesa's xf86glx.c, * which contains the following copyright: * * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. * All Rights Reserved. * * 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 * THE ABOVE LISTED COPYRIGHT HOLDER(S) 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. */ #ifdef HAVE_DIX_CONFIG_H #include #endif #include "dri.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "capabilities.h" #include "visualConfigs.h" /* Based originally on code from indirect.c which was based on code from i830_dri.c. */ void setVisualConfigs(void) { int numConfigs = 0; __GLXvisualConfig *visualConfigs = NULL; void **visualPrivates = NULL; struct glCapabilities caps; struct glCapabilitiesConfig *conf = NULL; int stereo, depth, aux, buffers, stencil, accum, color, msample; int i = 0; if(getGlCapabilities(&caps)) { ErrorF("error from getGlCapabilities()!\n"); return; } /* conf->stereo is 0 or 1, but we need at least 1 iteration of the loop, so we treat a true conf->stereo as 2. The depth size is 0 or 24. Thus we do 2 iterations for that. conf->aux_buffers (when available/non-zero) result in 2 iterations instead of 1. conf->buffers indicates whether we have single or double buffering. conf->total_stencil_bit_depths conf->total_color_buffers indicates the RGB/RGBA color depths. conf->total_accum_buffers iterations for accum (with at least 1 if equal to 0) conf->total_depth_buffer_depths conf->multisample_buffers iterations (with at least 1 if equal to 0). We add 1 for the 0 multisampling config. */ assert(NULL != caps.configurations); conf = caps.configurations; numConfigs = 0; for(conf = caps.configurations; conf; conf = conf->next) { if(conf->total_color_buffers <= 0) continue; numConfigs += (conf->stereo ? 2 : 1) * (conf->aux_buffers ? 2 : 1) * conf->buffers * ((conf->total_stencil_bit_depths > 0) ? conf->total_stencil_bit_depths : 1) * conf->total_color_buffers * ((conf->total_accum_buffers > 0) ? conf->total_accum_buffers : 1) * conf->total_depth_buffer_depths * (conf->multisample_buffers + 1); } visualConfigs = xcalloc(sizeof(*visualConfigs), numConfigs); if(NULL == visualConfigs) { ErrorF("xcalloc failure when allocating visualConfigs\n"); freeGlCapabilities(&caps); return; } visualPrivates = xcalloc(sizeof(void *), numConfigs); if(NULL == visualPrivates) { ErrorF("xcalloc failure when allocating visualPrivates"); freeGlCapabilities(&caps); xfree(visualConfigs); return; } i = 0; /* current buffer */ for(conf = caps.configurations; conf; conf = conf->next) { for(stereo = 0; stereo < (conf->stereo ? 2 : 1); ++stereo) { for(aux = 0; aux < (conf->aux_buffers ? 2 : 1); ++aux) { for(buffers = 0; buffers < conf->buffers; ++buffers) { for(stencil = 0; stencil < ((conf->total_stencil_bit_depths > 0) ? conf->total_stencil_bit_depths : 1); ++stencil) { for(color = 0; color < conf->total_color_buffers; ++color) { for(accum = 0; accum < ((conf->total_accum_buffers > 0) ? conf->total_accum_buffers : 1); ++accum) { for(depth = 0; depth < conf->total_depth_buffer_depths; ++depth) { for(msample = 0; msample < (conf->multisample_buffers + 1); ++msample) { visualConfigs[i].vid = (VisualID)(-1); visualConfigs[i].class = TrueColor; visualConfigs[i].rgba = true; visualConfigs[i].redSize = conf->color_buffers[color].r; visualConfigs[i].greenSize = conf->color_buffers[color].g; visualConfigs[i].blueSize = conf->color_buffers[color].b; if(GLCAPS_COLOR_BUF_INVALID_VALUE == conf->color_buffers[color].a) { /* This visual has no alpha. */ visualConfigs[i].alphaSize = 0; } else { visualConfigs[i].alphaSize = conf->color_buffers[color].a; } /* * If the .a/alpha value is unset, then don't add it to the * bufferSize specification. The INVALID_VALUE indicates that it * was unset. * * This prevents odd bufferSizes, such as 14. */ if(GLCAPS_COLOR_BUF_INVALID_VALUE == conf->color_buffers[color].a) { visualConfigs[i].bufferSize = conf->color_buffers[color].r + conf->color_buffers[color].g + conf->color_buffers[color].b; } else { visualConfigs[i].bufferSize = conf->color_buffers[color].r + conf->color_buffers[color].g + conf->color_buffers[color].b + conf->color_buffers[color].a; } /* * I'm uncertain about these masks. * I don't think we actually care what the values are in our * libGL, so it doesn't seem to make a difference. */ visualConfigs[i].redMask = -1; visualConfigs[i].greenMask = -1; visualConfigs[i].blueMask = -1; visualConfigs[i].alphaMask = -1; if(conf->total_accum_buffers > 0) { visualConfigs[i].accumRedSize = conf->accum_buffers[accum].r; visualConfigs[i].accumGreenSize = conf->accum_buffers[accum].g; visualConfigs[i].accumBlueSize = conf->accum_buffers[accum].b; if(GLCAPS_COLOR_BUF_INVALID_VALUE != conf->accum_buffers[accum].a) { visualConfigs[i].accumAlphaSize = conf->accum_buffers[accum].a; } else { visualConfigs[i].accumAlphaSize = 0; } } else { visualConfigs[i].accumRedSize = 0; visualConfigs[i].accumGreenSize = 0; visualConfigs[i].accumBlueSize = 0; visualConfigs[i].accumAlphaSize = 0; } visualConfigs[i].doubleBuffer = buffers ? TRUE : FALSE; visualConfigs[i].stereo = stereo ? TRUE : FALSE; visualConfigs[i].depthSize = conf->depth_buffers[depth]; if(conf->total_stencil_bit_depths > 0) { visualConfigs[i].stencilSize = conf->stencil_bit_depths[stencil]; } else { visualConfigs[i].stencilSize = 0; } visualConfigs[i].auxBuffers = aux ? conf->aux_buffers : 0; visualConfigs[i].level = 0; if(conf->accelerated) { visualConfigs[i].visualRating = GLX_NONE; } else { visualConfigs[i].visualRating = GLX_SLOW_VISUAL_EXT; } visualConfigs[i].transparentPixel = GLX_NONE; visualConfigs[i].transparentRed = GLX_NONE; visualConfigs[i].transparentGreen = GLX_NONE; visualConfigs[i].transparentBlue = GLX_NONE; visualConfigs[i].transparentAlpha = GLX_NONE; visualConfigs[i].transparentIndex = GLX_NONE; if(msample > 0) { visualConfigs[i].multiSampleSize = conf->multisample_samples; visualConfigs[i].nMultiSampleBuffers = conf->multisample_buffers; } else { visualConfigs[i].multiSampleSize = 0; visualConfigs[i].nMultiSampleBuffers = 0; } ++i; } } } } } } } } } if (i != numConfigs) { ErrorF("numConfigs calculation error in setVisualConfigs! numConfigs is %d i is %d\n", numConfigs, i); abort(); } freeGlCapabilities(&caps); GlxSetVisualConfigs(numConfigs, visualConfigs, visualPrivates); }