47d3821870
This prevents visuals with odd sizes. The machine I use didn't have
this problem, but it shows up on some others.
(cherry picked from commit ed181382dd)
256 lines
8.6 KiB
C
256 lines
8.6 KiB
C
/*
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* Copyright (c) 2007, 2008 Apple Inc.
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* Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved.
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* Copyright (c) 2002 Greg Parker. All Rights Reserved.
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*
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* Portions of this file are copied from Mesa's xf86glx.c,
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* which contains the following copyright:
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*
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* Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "dri.h"
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#include <OpenGL/OpenGL.h>
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#include <OpenGL/CGLContext.h>
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#include <GL/gl.h>
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#include <GL/glxproto.h>
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#include <windowstr.h>
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#include <resource.h>
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#include <GL/glxint.h>
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#include <GL/glxtokens.h>
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#include <scrnintstr.h>
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#include <glxserver.h>
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#include <glxscreens.h>
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#include <glxdrawable.h>
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#include <glxcontext.h>
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#include <glxext.h>
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#include <glxutil.h>
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#include <glxscreens.h>
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#include <GL/internal/glcore.h>
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#include "capabilities.h"
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#include "visualConfigs.h"
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/* Based originally on code from indirect.c which was based on code from i830_dri.c. */
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void setVisualConfigs(void) {
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int numConfigs = 0;
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__GLXvisualConfig *visualConfigs = NULL;
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void **visualPrivates = NULL;
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struct glCapabilities caps;
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struct glCapabilitiesConfig *conf = NULL;
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int stereo, depth, aux, buffers, stencil, accum, color, msample;
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int i = 0;
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if(getGlCapabilities(&caps)) {
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ErrorF("error from getGlCapabilities()!\n");
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return;
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}
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/*
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conf->stereo is 0 or 1, but we need at least 1 iteration of the loop,
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so we treat a true conf->stereo as 2.
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The depth size is 0 or 24. Thus we do 2 iterations for that.
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conf->aux_buffers (when available/non-zero) result in 2 iterations instead of 1.
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conf->buffers indicates whether we have single or double buffering.
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conf->total_stencil_bit_depths
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conf->total_color_buffers indicates the RGB/RGBA color depths.
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conf->total_accum_buffers iterations for accum (with at least 1 if equal to 0)
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conf->total_depth_buffer_depths
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conf->multisample_buffers iterations (with at least 1 if equal to 0). We add 1
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for the 0 multisampling config.
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*/
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assert(NULL != caps.configurations);
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conf = caps.configurations;
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numConfigs = 0;
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for(conf = caps.configurations; conf; conf = conf->next) {
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if(conf->total_color_buffers <= 0)
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continue;
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numConfigs += (conf->stereo ? 2 : 1)
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* (conf->aux_buffers ? 2 : 1)
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* conf->buffers
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* ((conf->total_stencil_bit_depths > 0) ? conf->total_stencil_bit_depths : 1)
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* conf->total_color_buffers
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* ((conf->total_accum_buffers > 0) ? conf->total_accum_buffers : 1)
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* conf->total_depth_buffer_depths
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* (conf->multisample_buffers + 1);
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}
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visualConfigs = xcalloc(sizeof(*visualConfigs), numConfigs);
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if(NULL == visualConfigs) {
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ErrorF("xcalloc failure when allocating visualConfigs\n");
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freeGlCapabilities(&caps);
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return;
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}
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visualPrivates = xcalloc(sizeof(void *), numConfigs);
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if(NULL == visualPrivates) {
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ErrorF("xcalloc failure when allocating visualPrivates");
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freeGlCapabilities(&caps);
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xfree(visualConfigs);
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return;
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}
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i = 0; /* current buffer */
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for(conf = caps.configurations; conf; conf = conf->next) {
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for(stereo = 0; stereo < (conf->stereo ? 2 : 1); ++stereo) {
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for(aux = 0; aux < (conf->aux_buffers ? 2 : 1); ++aux) {
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for(buffers = 0; buffers < conf->buffers; ++buffers) {
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for(stencil = 0; stencil < ((conf->total_stencil_bit_depths > 0) ?
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conf->total_stencil_bit_depths : 1); ++stencil) {
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for(color = 0; color < conf->total_color_buffers; ++color) {
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for(accum = 0; accum < ((conf->total_accum_buffers > 0) ?
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conf->total_accum_buffers : 1); ++accum) {
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for(depth = 0; depth < conf->total_depth_buffer_depths; ++depth) {
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for(msample = 0; msample < (conf->multisample_buffers + 1); ++msample) {
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visualConfigs[i].vid = (VisualID)(-1);
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visualConfigs[i].class = TrueColor;
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visualConfigs[i].rgba = true;
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visualConfigs[i].redSize = conf->color_buffers[color].r;
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visualConfigs[i].greenSize = conf->color_buffers[color].g;
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visualConfigs[i].blueSize = conf->color_buffers[color].b;
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if(GLCAPS_COLOR_BUF_INVALID_VALUE == conf->color_buffers[color].a) {
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/* This visual has no alpha. */
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visualConfigs[i].alphaSize = 0;
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} else {
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visualConfigs[i].alphaSize = conf->color_buffers[color].a;
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}
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/*
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* If the .a/alpha value is unset, then don't add it to the
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* bufferSize specification. The INVALID_VALUE indicates that it
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* was unset.
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*
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* This prevents odd bufferSizes, such as 14.
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*/
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if(GLCAPS_COLOR_BUF_INVALID_VALUE == conf->color_buffers[color].a) {
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visualConfigs[i].bufferSize = conf->color_buffers[color].r +
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conf->color_buffers[color].g + conf->color_buffers[color].b;
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} else {
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visualConfigs[i].bufferSize = conf->color_buffers[color].r +
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conf->color_buffers[color].g + conf->color_buffers[color].b +
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conf->color_buffers[color].a;
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}
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/*
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* I'm uncertain about these masks.
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* I don't think we actually care what the values are in our
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* libGL, so it doesn't seem to make a difference.
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*/
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visualConfigs[i].redMask = -1;
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visualConfigs[i].greenMask = -1;
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visualConfigs[i].blueMask = -1;
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visualConfigs[i].alphaMask = -1;
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if(conf->total_accum_buffers > 0) {
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visualConfigs[i].accumRedSize = conf->accum_buffers[accum].r;
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visualConfigs[i].accumGreenSize = conf->accum_buffers[accum].g;
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visualConfigs[i].accumBlueSize = conf->accum_buffers[accum].b;
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if(GLCAPS_COLOR_BUF_INVALID_VALUE != conf->accum_buffers[accum].a) {
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visualConfigs[i].accumAlphaSize = conf->accum_buffers[accum].a;
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} else {
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visualConfigs[i].accumAlphaSize = 0;
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}
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} else {
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visualConfigs[i].accumRedSize = 0;
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visualConfigs[i].accumGreenSize = 0;
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visualConfigs[i].accumBlueSize = 0;
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visualConfigs[i].accumAlphaSize = 0;
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}
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visualConfigs[i].doubleBuffer = buffers ? TRUE : FALSE;
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visualConfigs[i].stereo = stereo ? TRUE : FALSE;
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visualConfigs[i].depthSize = conf->depth_buffers[depth];
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if(conf->total_stencil_bit_depths > 0) {
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visualConfigs[i].stencilSize = conf->stencil_bit_depths[stencil];
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} else {
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visualConfigs[i].stencilSize = 0;
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}
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visualConfigs[i].auxBuffers = aux ? conf->aux_buffers : 0;
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visualConfigs[i].level = 0;
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if(conf->accelerated) {
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visualConfigs[i].visualRating = GLX_NONE;
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} else {
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visualConfigs[i].visualRating = GLX_SLOW_VISUAL_EXT;
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}
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visualConfigs[i].transparentPixel = GLX_NONE;
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visualConfigs[i].transparentRed = GLX_NONE;
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visualConfigs[i].transparentGreen = GLX_NONE;
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visualConfigs[i].transparentBlue = GLX_NONE;
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visualConfigs[i].transparentAlpha = GLX_NONE;
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visualConfigs[i].transparentIndex = GLX_NONE;
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if(msample > 0) {
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visualConfigs[i].multiSampleSize = conf->multisample_samples;
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visualConfigs[i].nMultiSampleBuffers = conf->multisample_buffers;
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} else {
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visualConfigs[i].multiSampleSize = 0;
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visualConfigs[i].nMultiSampleBuffers = 0;
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}
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++i;
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}
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}
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}
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}
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}
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}
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}
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}
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}
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if (i != numConfigs) {
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ErrorF("numConfigs calculation error in setVisualConfigs! numConfigs is %d i is %d\n", numConfigs, i);
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abort();
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}
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freeGlCapabilities(&caps);
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GlxSetVisualConfigs(numConfigs, visualConfigs, visualPrivates);
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}
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