1326ee0bc5
Otherwise X server crashes if GLX is enabled and Composite disabled. For
example the compIsAlternateVisual function will try to lookup CompScreenPtr
using the CompScreenPrivateKey, but that was never initialized if Composite is
disabled.
Fixes: f84e59a4f4. ("glx: Duplicate relevant fbconfigs for compositing visuals")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104993
Signed-off-by: Michal Srb <msrb@suse.com>
365 lines
12 KiB
C
365 lines
12 KiB
C
/*
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* Copyright © 2008 Red Hat, Inc
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of the
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* copyright holders not be used in advertising or publicity
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* pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* 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 <stdint.h>
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#include <errno.h>
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#include <dlfcn.h>
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#include <sys/time.h>
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#include <GL/gl.h>
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#include <GL/glxtokens.h>
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#include <GL/internal/dri_interface.h>
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#include <os.h>
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#include "extinit.h"
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#include "glxserver.h"
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#include "glxext.h"
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#include "glxcontext.h"
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#include "glxscreens.h"
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#include "glxdricommon.h"
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#define __ATTRIB(attrib, field) \
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{ attrib, offsetof(__GLXconfig, field) }
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static const struct {
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unsigned int attrib, offset;
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} attribMap[] = {
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__ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
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__ATTRIB(__DRI_ATTRIB_LEVEL, level),
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__ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits),
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__ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits),
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__ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits),
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__ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits),
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__ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits),
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__ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits),
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__ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers),
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__ATTRIB(__DRI_ATTRIB_SAMPLES, samples),
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__ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode),
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__ATTRIB(__DRI_ATTRIB_STEREO, stereoMode),
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__ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentPixel),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha),
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__ATTRIB(__DRI_ATTRIB_RED_MASK, redMask),
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__ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask),
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__ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask),
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__ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask),
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__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth),
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__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight),
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__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels),
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__ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth),
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__ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight),
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__ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod),
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__ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
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__ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
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__ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture),
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__ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),
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__ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable),
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};
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static void
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setScalar(__GLXconfig * config, unsigned int attrib, unsigned int value)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(attribMap); i++)
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if (attribMap[i].attrib == attrib) {
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*(unsigned int *) ((char *) config + attribMap[i].offset) = value;
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return;
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}
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}
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static Bool
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render_type_is_pbuffer_only(unsigned renderType)
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{
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/* The GL_ARB_color_buffer_float spec says:
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*
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* "Note that floating point rendering is only supported for
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* GLXPbuffer drawables. The GLX_DRAWABLE_TYPE attribute of the
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* GLXFBConfig must have the GLX_PBUFFER_BIT bit set and the
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* GLX_RENDER_TYPE attribute must have the GLX_RGBA_FLOAT_BIT set."
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*/
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return !!(renderType & (__DRI_ATTRIB_UNSIGNED_FLOAT_BIT
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| __DRI_ATTRIB_FLOAT_BIT));
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}
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static __GLXconfig *
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createModeFromConfig(const __DRIcoreExtension * core,
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const __DRIconfig * driConfig,
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unsigned int visualType,
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GLboolean duplicateForComp)
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{
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__GLXDRIconfig *config;
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GLint renderType = 0;
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unsigned int attrib, value, drawableType = GLX_PBUFFER_BIT;
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int i;
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config = calloc(1, sizeof *config);
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config->driConfig = driConfig;
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i = 0;
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while (core->indexConfigAttrib(driConfig, i++, &attrib, &value)) {
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switch (attrib) {
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case __DRI_ATTRIB_RENDER_TYPE:
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if (value & __DRI_ATTRIB_RGBA_BIT)
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renderType |= GLX_RGBA_BIT;
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if (value & __DRI_ATTRIB_COLOR_INDEX_BIT)
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renderType |= GLX_COLOR_INDEX_BIT;
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if (value & __DRI_ATTRIB_FLOAT_BIT)
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renderType |= GLX_RGBA_FLOAT_BIT_ARB;
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if (value & __DRI_ATTRIB_UNSIGNED_FLOAT_BIT)
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renderType |= GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT;
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break;
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case __DRI_ATTRIB_CONFIG_CAVEAT:
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if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
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config->config.visualRating = GLX_NON_CONFORMANT_CONFIG;
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else if (value & __DRI_ATTRIB_SLOW_BIT)
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config->config.visualRating = GLX_SLOW_CONFIG;
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else
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config->config.visualRating = GLX_NONE;
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break;
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case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS:
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config->config.bindToTextureTargets = 0;
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if (value & __DRI_ATTRIB_TEXTURE_1D_BIT)
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config->config.bindToTextureTargets |= GLX_TEXTURE_1D_BIT_EXT;
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if (value & __DRI_ATTRIB_TEXTURE_2D_BIT)
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config->config.bindToTextureTargets |= GLX_TEXTURE_2D_BIT_EXT;
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if (value & __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT)
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config->config.bindToTextureTargets |=
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GLX_TEXTURE_RECTANGLE_BIT_EXT;
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break;
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case __DRI_ATTRIB_SWAP_METHOD:
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/* Workaround for broken dri drivers */
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if (value != GLX_SWAP_UNDEFINED_OML &&
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value != GLX_SWAP_COPY_OML &&
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value != GLX_SWAP_EXCHANGE_OML)
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value = GLX_SWAP_UNDEFINED_OML;
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/* Fall through. */
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default:
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setScalar(&config->config, attrib, value);
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break;
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}
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}
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if (!render_type_is_pbuffer_only(renderType))
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drawableType |= GLX_WINDOW_BIT | GLX_PIXMAP_BIT;
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config->config.next = NULL;
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config->config.visualType = visualType;
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config->config.renderType = renderType;
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config->config.drawableType = drawableType;
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config->config.yInverted = GL_TRUE;
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#ifdef COMPOSITE
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if (!noCompositeExtension) {
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/*
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* Here we decide what fbconfigs will be duplicated for compositing.
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* fgbconfigs marked with duplicatedForConf will be reserved for
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* compositing visuals.
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* It might look strange to do this decision this late when translation
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* from a __DRIConfig is already done, but using the __DRIConfig
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* accessor function becomes worse both with respect to code complexity
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* and CPU usage.
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*/
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if (duplicateForComp &&
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(render_type_is_pbuffer_only(renderType) ||
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config->config.rgbBits != 32 ||
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config->config.redBits != 8 ||
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config->config.greenBits != 8 ||
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config->config.blueBits != 8 ||
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config->config.visualRating != GLX_NONE ||
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config->config.sampleBuffers != 0)) {
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free(config);
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return NULL;
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}
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config->config.duplicatedForComp = duplicateForComp;
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}
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#endif
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return &config->config;
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}
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__GLXconfig *
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glxConvertConfigs(const __DRIcoreExtension * core,
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const __DRIconfig ** configs)
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{
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__GLXconfig head, *tail;
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int i;
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tail = &head;
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head.next = NULL;
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for (i = 0; configs[i]; i++) {
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tail->next = createModeFromConfig(core, configs[i], GLX_TRUE_COLOR,
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GL_FALSE);
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if (tail->next == NULL)
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break;
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tail = tail->next;
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}
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for (i = 0; configs[i]; i++) {
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tail->next = createModeFromConfig(core, configs[i], GLX_DIRECT_COLOR,
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GL_FALSE);
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if (tail->next == NULL)
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break;
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tail = tail->next;
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}
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#ifdef COMPOSITE
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if (!noCompositeExtension) {
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/* Duplicate fbconfigs for use with compositing visuals */
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for (i = 0; configs[i]; i++) {
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tail->next = createModeFromConfig(core, configs[i], GLX_TRUE_COLOR,
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GL_TRUE);
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if (tail->next == NULL)
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continue;
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tail = tail->next;
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}
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}
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#endif
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return head.next;
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}
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static const char dri_driver_path[] = DRI_DRIVER_PATH;
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/* Temporary define to allow building without a dri_interface.h from
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* updated Mesa. Some day when we don't care about Mesa that old any
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* more this can be removed.
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*/
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#ifndef __DRI_DRIVER_GET_EXTENSIONS
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#define __DRI_DRIVER_GET_EXTENSIONS "__driDriverGetExtensions"
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#endif
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void *
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glxProbeDriver(const char *driverName,
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void **coreExt, const char *coreName, int coreVersion,
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void **renderExt, const char *renderName, int renderVersion)
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{
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int i;
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void *driver;
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char filename[PATH_MAX];
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char *get_extensions_name;
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const __DRIextension **extensions = NULL;
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const char *path = NULL;
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/* Search in LIBGL_DRIVERS_PATH if we're not setuid. */
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if (!PrivsElevated())
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path = getenv("LIBGL_DRIVERS_PATH");
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if (!path)
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path = dri_driver_path;
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do {
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const char *next;
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int path_len;
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next = strchr(path, ':');
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if (next) {
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path_len = next - path;
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next++;
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} else {
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path_len = strlen(path);
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next = NULL;
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}
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snprintf(filename, sizeof filename, "%.*s/%s_dri.so", path_len, path,
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driverName);
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driver = dlopen(filename, RTLD_LAZY | RTLD_LOCAL);
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if (driver != NULL)
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break;
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LogMessage(X_ERROR, "AIGLX error: dlopen of %s failed (%s)\n",
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filename, dlerror());
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path = next;
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} while (path);
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if (driver == NULL) {
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LogMessage(X_ERROR, "AIGLX error: unable to load driver %s\n",
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driverName);
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goto cleanup_failure;
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}
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if (asprintf(&get_extensions_name, "%s_%s",
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__DRI_DRIVER_GET_EXTENSIONS, driverName) != -1) {
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const __DRIextension **(*get_extensions)(void);
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get_extensions = dlsym(driver, get_extensions_name);
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if (get_extensions)
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extensions = get_extensions();
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free(get_extensions_name);
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}
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if (!extensions)
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extensions = dlsym(driver, __DRI_DRIVER_EXTENSIONS);
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if (extensions == NULL) {
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LogMessage(X_ERROR, "AIGLX error: %s exports no extensions (%s)\n",
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driverName, dlerror());
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goto cleanup_failure;
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}
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for (i = 0; extensions[i]; i++) {
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if (strcmp(extensions[i]->name, coreName) == 0 &&
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extensions[i]->version >= coreVersion) {
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*coreExt = (void *) extensions[i];
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}
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if (strcmp(extensions[i]->name, renderName) == 0 &&
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extensions[i]->version >= renderVersion) {
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*renderExt = (void *) extensions[i];
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}
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}
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if (*coreExt == NULL || *renderExt == NULL) {
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LogMessage(X_ERROR,
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"AIGLX error: %s does not export required DRI extension\n",
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driverName);
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goto cleanup_failure;
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}
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return driver;
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cleanup_failure:
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if (driver)
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dlclose(driver);
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*coreExt = *renderExt = NULL;
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return NULL;
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}
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