805 lines
31 KiB
C++
805 lines
31 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
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Based on glcompmgr code by Felix Bellaby.
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Using code from Compiz and Beryl.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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// This file is included in scene_opengl.cpp
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// the configs used for the destination
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GLXFBConfig SceneOpenGL::fbcbuffer_db;
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GLXFBConfig SceneOpenGL::fbcbuffer_nondb;
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// the configs used for windows
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SceneOpenGL::FBConfigInfo SceneOpenGL::fbcdrawableinfo[ 32 + 1 ];
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// GLX content
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GLXContext SceneOpenGL::ctxbuffer;
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GLXContext SceneOpenGL::ctxdrawable;
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// the destination drawable where the compositing is done
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GLXDrawable SceneOpenGL::glxbuffer = None;
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GLXDrawable SceneOpenGL::last_pixmap = None;
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SceneOpenGL::SceneOpenGL(Workspace* ws)
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: Scene(ws)
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, init_ok(false)
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, selfCheckDone(false)
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{
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if (!Extensions::glxAvailable()) {
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kDebug(1212) << "No glx extensions available";
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return; // error
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}
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initGLX();
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// check for FBConfig support
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if (!hasGLExtension("GLX_SGIX_fbconfig") || !glXGetFBConfigAttrib || !glXGetFBConfigs ||
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!glXGetVisualFromFBConfig || !glXCreatePixmap || !glXDestroyPixmap ||
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!glXCreateWindow || !glXDestroyWindow) {
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kError(1212) << "GLX_SGIX_fbconfig or required GLX functions missing";
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return; // error
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}
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if (!selectMode())
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return; // error
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if (!initBuffer()) // create destination buffer
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return; // error
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if (!initRenderingContext())
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return; // error
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// Initialize OpenGL
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initGL();
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GLPlatform *glPlatform = GLPlatform::instance();
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if (glPlatform->driver() == Driver_Swrast || glPlatform->driver() == Driver_Softpipe) {
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kError(1212) << "OpenGL Software Rasterizer detected. Falling back to XRender.";
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QTimer::singleShot(0, Workspace::self(), SLOT(fallbackToXRenderCompositing()));
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return;
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}
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if (!hasGLExtension("GL_ARB_texture_non_power_of_two")
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&& !hasGLExtension("GL_ARB_texture_rectangle")) {
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kError(1212) << "GL_ARB_texture_non_power_of_two and GL_ARB_texture_rectangle missing";
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return; // error
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}
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if (glPlatform->isMesaDriver() && glPlatform->mesaVersion() < kVersionNumber(7, 10)) {
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kError(1212) << "KWin requires at least Mesa 7.10 for OpenGL compositing.";
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return;
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}
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if (db)
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glDrawBuffer(GL_BACK);
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// Check whether certain features are supported
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has_waitSync = false;
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if (glXGetVideoSync && glXIsDirect(display(), ctxbuffer) && options->glVSync) {
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unsigned int sync;
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if (glXGetVideoSync(&sync) == 0) {
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if (glXWaitVideoSync(1, 0, &sync) == 0)
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has_waitSync = true;
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else
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qWarning() << "NO VSYNC! glXWaitVideoSync(1,0,&uint) isn't 0 but" << glXWaitVideoSync(1, 0, &sync);
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} else
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qWarning() << "NO VSYNC! glXGetVideoSync(&uint) isn't 0 but" << glXGetVideoSync(&sync);
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}
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debug = qstrcmp(qgetenv("KWIN_GL_DEBUG"), "1") == 0;
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// scene shader setup
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if (GLPlatform::instance()->supports(GLSL)) {
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if (!ShaderManager::instance()->isValid()) {
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kDebug(1212) << "No Scene Shaders available";
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}
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}
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// OpenGL scene setup
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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float fovy = 60.0f;
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float aspect = 1.0f;
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float zNear = 0.1f;
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float zFar = 100.0f;
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float ymax = zNear * tan(fovy * M_PI / 360.0f);
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float ymin = -ymax;
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float xmin = ymin * aspect;
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float xmax = ymax * aspect;
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// swap top and bottom to have OpenGL coordinate system match X system
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glFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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float scaleFactor = 1.1 * tan(fovy * M_PI / 360.0f) / ymax;
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glTranslatef(xmin * scaleFactor, ymax * scaleFactor, -1.1);
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glScalef((xmax - xmin)*scaleFactor / displayWidth(), -(ymax - ymin)*scaleFactor / displayHeight(), 0.001);
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if (checkGLError("Init")) {
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kError(1212) << "OpenGL compositing setup failed";
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return; // error
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}
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// selfcheck is broken (see Bug 253357)
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#if 0
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// Do self-check immediatelly during compositing setup only when it's not KWin startup
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// at the same time (in other words, only when activating compositing using the kcm).
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// Currently selfcheck causes bad flicker (due to X mapping the overlay window
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// for too long?) which looks bad during KDE startup.
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if (!initting) {
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if (!selfCheck())
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return;
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selfCheckDone = true;
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}
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#endif
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kDebug(1212) << "DB:" << db << ", Direct:" << bool(glXIsDirect(display(), ctxbuffer)) << endl;
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init_ok = true;
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}
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SceneOpenGL::~SceneOpenGL()
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{
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if (!init_ok) {
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// TODO this probably needs to clean up whatever has been created until the failure
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wspace->destroyOverlay();
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return;
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}
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foreach (Window * w, windows)
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delete w;
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// do cleanup after initBuffer()
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cleanupGL();
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glXMakeCurrent(display(), None, NULL);
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glXDestroyContext(display(), ctxbuffer);
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if (wspace->overlayWindow()) {
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if (hasGLXVersion(1, 3))
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glXDestroyWindow(display(), glxbuffer);
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XDestroyWindow(display(), buffer);
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wspace->destroyOverlay();
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} else {
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glXDestroyPixmap(display(), glxbuffer);
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XFreeGC(display(), gcroot);
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XFreePixmap(display(), buffer);
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}
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SceneOpenGL::EffectFrame::cleanup();
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checkGLError("Cleanup");
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}
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bool SceneOpenGL::initTfp()
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{
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if (glXBindTexImageEXT == NULL || glXReleaseTexImageEXT == NULL)
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return false;
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return true;
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}
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bool SceneOpenGL::initRenderingContext()
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{
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bool direct_rendering = options->glDirect;
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KXErrorHandler errs1;
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ctxbuffer = glXCreateNewContext(display(), fbcbuffer, GLX_RGBA_TYPE, NULL,
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direct_rendering ? GL_TRUE : GL_FALSE);
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bool failed = (ctxbuffer == NULL || !glXMakeCurrent(display(), glxbuffer, ctxbuffer));
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if (errs1.error(true)) // always check for error( having it all in one if () could skip
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failed = true; // it due to evaluation short-circuiting
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if (failed) {
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if (!direct_rendering) {
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kDebug(1212).nospace() << "Couldn't initialize rendering context ("
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<< KXErrorHandler::errorMessage(errs1.errorEvent()) << ")";
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return false;
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}
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glXMakeCurrent(display(), None, NULL);
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if (ctxbuffer != NULL)
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glXDestroyContext(display(), ctxbuffer);
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direct_rendering = false; // try again
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KXErrorHandler errs2;
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ctxbuffer = glXCreateNewContext(display(), fbcbuffer, GLX_RGBA_TYPE, NULL, GL_FALSE);
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bool failed = (ctxbuffer == NULL || !glXMakeCurrent(display(), glxbuffer, ctxbuffer));
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if (errs2.error(true))
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failed = true;
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if (failed) {
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kDebug(1212).nospace() << "Couldn't initialize rendering context ("
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<< KXErrorHandler::errorMessage(errs2.errorEvent()) << ")";
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return false;
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}
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}
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return true;
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}
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// create destination buffer
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bool SceneOpenGL::initBuffer()
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{
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if (!initBufferConfigs())
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return false;
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if (fbcbuffer_db != NULL && wspace->createOverlay()) {
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// we have overlay, try to create double-buffered window in it
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fbcbuffer = fbcbuffer_db;
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XVisualInfo* visual = glXGetVisualFromFBConfig(display(), fbcbuffer);
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XSetWindowAttributes attrs;
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attrs.colormap = XCreateColormap(display(), rootWindow(), visual->visual, AllocNone);
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buffer = XCreateWindow(display(), wspace->overlayWindow(), 0, 0, displayWidth(), displayHeight(),
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0, visual->depth, InputOutput, visual->visual, CWColormap, &attrs);
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if (hasGLXVersion(1, 3))
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glxbuffer = glXCreateWindow(display(), fbcbuffer, buffer, NULL);
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else
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glxbuffer = buffer;
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wspace->setupOverlay(buffer);
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db = true;
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XFree(visual);
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} else if (fbcbuffer_nondb != NULL) {
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// cannot get any double-buffered drawable, will double-buffer using a pixmap
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fbcbuffer = fbcbuffer_nondb;
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XVisualInfo* visual = glXGetVisualFromFBConfig(display(), fbcbuffer);
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XGCValues gcattr;
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gcattr.subwindow_mode = IncludeInferiors;
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gcroot = XCreateGC(display(), rootWindow(), GCSubwindowMode, &gcattr);
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buffer = XCreatePixmap(display(), rootWindow(), displayWidth(), displayHeight(),
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visual->depth);
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glxbuffer = glXCreatePixmap(display(), fbcbuffer, buffer, NULL);
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db = false;
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XFree(visual);
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} else {
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kError(1212) << "Couldn't create output buffer (failed to create overlay window?) !";
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return false; // error
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}
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int vis_buffer;
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glXGetFBConfigAttrib(display(), fbcbuffer, GLX_VISUAL_ID, &vis_buffer);
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XVisualInfo* visinfo_buffer = glXGetVisualFromFBConfig(display(), fbcbuffer);
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kDebug(1212) << "Buffer visual (depth " << visinfo_buffer->depth << "): 0x" << QString::number(vis_buffer, 16);
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XFree(visinfo_buffer);
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return true;
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}
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// choose the best configs for the destination buffer
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bool SceneOpenGL::initBufferConfigs()
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{
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int cnt;
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GLXFBConfig *fbconfigs = glXGetFBConfigs(display(), DefaultScreen(display()), &cnt);
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fbcbuffer_db = NULL;
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fbcbuffer_nondb = NULL;
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for (int i = 0; i < 2; i++) {
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int back, stencil, depth, caveat, alpha;
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back = i > 0 ? INT_MAX : 1;
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stencil = INT_MAX;
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depth = INT_MAX;
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caveat = INT_MAX;
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alpha = 0;
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for (int j = 0; j < cnt; j++) {
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XVisualInfo *vi;
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int visual_depth;
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vi = glXGetVisualFromFBConfig(display(), fbconfigs[ j ]);
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if (vi == NULL)
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continue;
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visual_depth = vi->depth;
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XFree(vi);
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if (visual_depth != DefaultDepth(display(), DefaultScreen(display())))
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continue;
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int value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_ALPHA_SIZE, &alpha);
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_BUFFER_SIZE, &value);
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if (value != visual_depth && (value - alpha) != visual_depth)
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continue;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_RENDER_TYPE, &value);
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if (!(value & GLX_RGBA_BIT))
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continue;
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int back_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_DOUBLEBUFFER, &back_value);
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if (i > 0) {
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if (back_value > back)
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continue;
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} else {
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if (back_value < back)
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continue;
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}
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int stencil_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_STENCIL_SIZE, &stencil_value);
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if (stencil_value > stencil)
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continue;
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int depth_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_DEPTH_SIZE, &depth_value);
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if (depth_value > depth)
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continue;
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int caveat_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_CONFIG_CAVEAT, &caveat_value);
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if (caveat_value > caveat)
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continue;
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back = back_value;
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stencil = stencil_value;
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depth = depth_value;
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caveat = caveat_value;
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if (i > 0)
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fbcbuffer_nondb = fbconfigs[ j ];
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else
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fbcbuffer_db = fbconfigs[ j ];
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}
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}
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if (cnt)
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XFree(fbconfigs);
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if (fbcbuffer_db == NULL && fbcbuffer_nondb == NULL) {
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kError(1212) << "Couldn't find framebuffer configuration for buffer!";
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return false;
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}
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for (int i = 0; i <= 32; i++) {
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if (fbcdrawableinfo[ i ].fbconfig == NULL)
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continue;
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int vis_drawable = 0;
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glXGetFBConfigAttrib(display(), fbcdrawableinfo[ i ].fbconfig, GLX_VISUAL_ID, &vis_drawable);
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kDebug(1212) << "Drawable visual (depth " << i << "): 0x" << QString::number(vis_drawable, 16);
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}
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return true;
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}
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// make a list of the best configs for windows by depth
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bool SceneOpenGL::initDrawableConfigs()
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{
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int cnt;
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GLXFBConfig *fbconfigs = glXGetFBConfigs(display(), DefaultScreen(display()), &cnt);
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for (int i = 0; i <= 32; i++) {
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int back, stencil, depth, caveat, alpha, mipmap, rgba;
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back = INT_MAX;
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stencil = INT_MAX;
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depth = INT_MAX;
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caveat = INT_MAX;
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mipmap = 0;
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rgba = 0;
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fbcdrawableinfo[ i ].fbconfig = NULL;
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fbcdrawableinfo[ i ].bind_texture_format = 0;
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fbcdrawableinfo[ i ].texture_targets = 0;
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fbcdrawableinfo[ i ].y_inverted = 0;
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fbcdrawableinfo[ i ].mipmap = 0;
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for (int j = 0; j < cnt; j++) {
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XVisualInfo *vi;
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int visual_depth;
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vi = glXGetVisualFromFBConfig(display(), fbconfigs[ j ]);
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if (vi == NULL)
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continue;
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visual_depth = vi->depth;
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XFree(vi);
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if (visual_depth != i)
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continue;
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int value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_ALPHA_SIZE, &alpha);
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_BUFFER_SIZE, &value);
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if (value != i && (value - alpha) != i)
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continue;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_RENDER_TYPE, &value);
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if (!(value & GLX_RGBA_BIT))
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continue;
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value = 0;
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if (i == 32) {
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_BIND_TO_TEXTURE_RGBA_EXT, &value);
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if (value) {
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// TODO I think this should be set only after the config passes all tests
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rgba = 1;
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fbcdrawableinfo[ i ].bind_texture_format = GLX_TEXTURE_FORMAT_RGBA_EXT;
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}
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}
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if (!value) {
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if (rgba)
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continue;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_BIND_TO_TEXTURE_RGB_EXT, &value);
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if (!value)
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continue;
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fbcdrawableinfo[ i ].bind_texture_format = GLX_TEXTURE_FORMAT_RGB_EXT;
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}
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int back_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_DOUBLEBUFFER, &back_value);
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if (back_value > back)
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continue;
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int stencil_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_STENCIL_SIZE, &stencil_value);
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if (stencil_value > stencil)
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continue;
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int depth_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_DEPTH_SIZE, &depth_value);
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if (depth_value > depth)
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continue;
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int mipmap_value = -1;
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if (GLTexture::framebufferObjectSupported()) {
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_BIND_TO_MIPMAP_TEXTURE_EXT, &mipmap_value);
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if (mipmap_value < mipmap)
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continue;
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}
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int caveat_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_CONFIG_CAVEAT, &caveat_value);
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if (caveat_value > caveat)
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continue;
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// ok, config passed all tests, it's the best one so far
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fbcdrawableinfo[ i ].fbconfig = fbconfigs[ j ];
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caveat = caveat_value;
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back = back_value;
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stencil = stencil_value;
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depth = depth_value;
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mipmap = mipmap_value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_BIND_TO_TEXTURE_TARGETS_EXT, &value);
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fbcdrawableinfo[ i ].texture_targets = value;
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glXGetFBConfigAttrib(display(), fbconfigs[ j ],
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GLX_Y_INVERTED_EXT, &value);
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fbcdrawableinfo[ i ].y_inverted = value;
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fbcdrawableinfo[ i ].mipmap = mipmap;
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}
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}
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if (cnt)
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XFree(fbconfigs);
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if (fbcdrawableinfo[ DefaultDepth(display(), DefaultScreen(display()))].fbconfig == NULL) {
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kError(1212) << "Couldn't find framebuffer configuration for default depth!";
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return false;
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}
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if (fbcdrawableinfo[ 32 ].fbconfig == NULL) {
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kError(1212) << "Couldn't find framebuffer configuration for depth 32 (no ARGB GLX visual)!";
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return false;
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}
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return true;
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}
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void SceneOpenGL::selfCheckSetup()
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{
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KXErrorHandler err;
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QImage img(selfCheckWidth(), selfCheckHeight(), QImage::Format_RGB32);
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img.setPixel(0, 0, QColor(Qt::red).rgb());
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img.setPixel(1, 0, QColor(Qt::green).rgb());
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img.setPixel(2, 0, QColor(Qt::blue).rgb());
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img.setPixel(0, 1, QColor(Qt::white).rgb());
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img.setPixel(1, 1, QColor(Qt::black).rgb());
|
|
img.setPixel(2, 1, QColor(Qt::white).rgb());
|
|
QPixmap pix = QPixmap::fromImage(img);
|
|
foreach (const QPoint & p, selfCheckPoints()) {
|
|
XSetWindowAttributes wa;
|
|
wa.override_redirect = True;
|
|
::Window window = XCreateWindow(display(), rootWindow(), 0, 0, selfCheckWidth(), selfCheckHeight(),
|
|
0, QX11Info::appDepth(), CopyFromParent, CopyFromParent, CWOverrideRedirect, &wa);
|
|
XSetWindowBackgroundPixmap(display(), window, pix.handle());
|
|
XClearWindow(display(), window);
|
|
XMapWindow(display(), window);
|
|
// move the window one down to where the result will be rendered too, just in case
|
|
// the render would fail completely and eventual check would try to read this window's contents
|
|
XMoveWindow(display(), window, p.x() + 1, p.y());
|
|
XCompositeRedirectWindow(display(), window, CompositeRedirectAutomatic);
|
|
Pixmap wpix = XCompositeNameWindowPixmap(display(), window);
|
|
glXWaitX();
|
|
Texture texture;
|
|
texture.load(wpix, QSize(selfCheckWidth(), selfCheckHeight()), QX11Info::appDepth());
|
|
texture.bind();
|
|
QRect rect(p.x(), p.y(), selfCheckWidth(), selfCheckHeight());
|
|
texture.render(infiniteRegion(), rect);
|
|
texture.unbind();
|
|
glXWaitGL();
|
|
XFreePixmap(display(), wpix);
|
|
XDestroyWindow(display(), window);
|
|
}
|
|
err.error(true); // just sync and discard
|
|
}
|
|
|
|
bool SceneOpenGL::selfCheckFinish()
|
|
{
|
|
glXWaitGL();
|
|
KXErrorHandler err;
|
|
bool ok = true;
|
|
foreach (const QPoint & p, selfCheckPoints()) {
|
|
QPixmap pix = QPixmap::grabWindow(rootWindow(), p.x(), p.y(), selfCheckWidth(), selfCheckHeight());
|
|
QImage img = pix.toImage();
|
|
// kDebug(1212) << "P:" << QColor( img.pixel( 0, 0 )).name();
|
|
// kDebug(1212) << "P:" << QColor( img.pixel( 1, 0 )).name();
|
|
// kDebug(1212) << "P:" << QColor( img.pixel( 2, 0 )).name();
|
|
// kDebug(1212) << "P:" << QColor( img.pixel( 0, 1 )).name();
|
|
// kDebug(1212) << "P:" << QColor( img.pixel( 1, 1 )).name();
|
|
// kDebug(1212) << "P:" << QColor( img.pixel( 2, 1 )).name();
|
|
if (img.pixel(0, 0) != QColor(Qt::red).rgb()
|
|
|| img.pixel(1, 0) != QColor(Qt::green).rgb()
|
|
|| img.pixel(2, 0) != QColor(Qt::blue).rgb()
|
|
|| img.pixel(0, 1) != QColor(Qt::white).rgb()
|
|
|| img.pixel(1, 1) != QColor(Qt::black).rgb()
|
|
|| img.pixel(2, 1) != QColor(Qt::white).rgb()) {
|
|
kError(1212) << "OpenGL compositing self-check failed, disabling compositing.";
|
|
ok = false;
|
|
break;
|
|
}
|
|
}
|
|
if (err.error(true))
|
|
ok = false;
|
|
if (ok)
|
|
kDebug(1212) << "OpenGL compositing self-check passed.";
|
|
if (!ok && options->disableCompositingChecks) {
|
|
kWarning(1212) << "Compositing checks disabled, proceeding regardless of self-check failure.";
|
|
return true;
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
// the entry function for painting
|
|
void SceneOpenGL::paint(QRegion damage, ToplevelList toplevels)
|
|
{
|
|
QTime t = QTime::currentTime();
|
|
foreach (Toplevel * c, toplevels) {
|
|
assert(windows.contains(c));
|
|
stacking_order.append(windows[ c ]);
|
|
}
|
|
grabXServer();
|
|
glXWaitX();
|
|
glPushMatrix();
|
|
int mask = 0;
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("Paint1");
|
|
#endif
|
|
paintScreen(&mask, &damage); // call generic implementation
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("Paint2");
|
|
#endif
|
|
glPopMatrix();
|
|
ungrabXServer(); // ungrab before flushBuffer(), it may wait for vsync
|
|
if (wspace->overlayWindow()) // show the window only after the first pass, since
|
|
wspace->showOverlay(); // that pass may take long
|
|
// selfcheck is broken (see Bug 253357)
|
|
#if 0
|
|
if (!selfCheckDone) {
|
|
selfCheckSetup();
|
|
damage |= selfCheckRegion();
|
|
}
|
|
#endif
|
|
lastRenderTime = t.elapsed();
|
|
flushBuffer(mask, damage);
|
|
#if 0
|
|
if (!selfCheckDone) {
|
|
if (!selfCheckFinish())
|
|
QTimer::singleShot(0, Workspace::self(), SLOT(finishCompositing()));
|
|
selfCheckDone = true;
|
|
}
|
|
#endif
|
|
// do cleanup
|
|
stacking_order.clear();
|
|
checkGLError("PostPaint");
|
|
}
|
|
|
|
// wait for vblank signal before painting
|
|
void SceneOpenGL::waitSync()
|
|
{
|
|
// NOTE that vsync has no effect with indirect rendering
|
|
if (waitSyncAvailable()) {
|
|
uint sync;
|
|
glFlush();
|
|
glXGetVideoSync(&sync);
|
|
glXWaitVideoSync(2, (sync + 1) % 2, &sync);
|
|
}
|
|
}
|
|
|
|
// actually paint to the screen (double-buffer swap or copy from pixmap buffer)
|
|
void SceneOpenGL::flushBuffer(int mask, QRegion damage)
|
|
{
|
|
if (db) {
|
|
if (mask & PAINT_SCREEN_REGION) {
|
|
waitSync();
|
|
if (glXCopySubBuffer) {
|
|
foreach (const QRect & r, damage.rects()) {
|
|
// convert to OpenGL coordinates
|
|
int y = displayHeight() - r.y() - r.height();
|
|
glXCopySubBuffer(display(), glxbuffer, r.x(), y, r.width(), r.height());
|
|
}
|
|
} else {
|
|
// if a shader is bound, copy pixels results in a black screen
|
|
// therefore unbind the shader and restore after copying the pixels
|
|
GLint shader = 0;
|
|
if (ShaderManager::instance()->isShaderBound()) {
|
|
glGetIntegerv(GL_CURRENT_PROGRAM, &shader);
|
|
glUseProgram(0);
|
|
}
|
|
// no idea why glScissor() is used, but Compiz has it and it doesn't seem to hurt
|
|
glEnable(GL_SCISSOR_TEST);
|
|
glDrawBuffer(GL_FRONT);
|
|
int xpos = 0;
|
|
int ypos = 0;
|
|
foreach (const QRect & r, damage.rects()) {
|
|
// convert to OpenGL coordinates
|
|
int y = displayHeight() - r.y() - r.height();
|
|
// Move raster position relatively using glBitmap() rather
|
|
// than using glRasterPos2f() - the latter causes drawing
|
|
// artefacts at the bottom screen edge with some gfx cards
|
|
// glRasterPos2f( r.x(), r.y() + r.height());
|
|
glBitmap(0, 0, 0, 0, r.x() - xpos, y - ypos, NULL);
|
|
xpos = r.x();
|
|
ypos = y;
|
|
glScissor(r.x(), y, r.width(), r.height());
|
|
glCopyPixels(r.x(), y, r.width(), r.height(), GL_COLOR);
|
|
}
|
|
glBitmap(0, 0, 0, 0, -xpos, -ypos, NULL); // move position back to 0,0
|
|
glDrawBuffer(GL_BACK);
|
|
glDisable(GL_SCISSOR_TEST);
|
|
// rebind previously bound shader
|
|
if (ShaderManager::instance()->isShaderBound()) {
|
|
glUseProgram(shader);
|
|
}
|
|
}
|
|
} else {
|
|
waitSync();
|
|
glXSwapBuffers(display(), glxbuffer);
|
|
}
|
|
glXWaitGL();
|
|
XFlush(display());
|
|
} else {
|
|
glFlush();
|
|
glXWaitGL();
|
|
waitSync();
|
|
if (mask & PAINT_SCREEN_REGION)
|
|
foreach (const QRect & r, damage.rects())
|
|
XCopyArea(display(), buffer, rootWindow(), gcroot, r.x(), r.y(), r.width(), r.height(), r.x(), r.y());
|
|
else
|
|
XCopyArea(display(), buffer, rootWindow(), gcroot, 0, 0, displayWidth(), displayHeight(), 0, 0);
|
|
XFlush(display());
|
|
}
|
|
}
|
|
|
|
//****************************************
|
|
// SceneOpenGL::Texture
|
|
//****************************************
|
|
|
|
void SceneOpenGL::Texture::init()
|
|
{
|
|
glxpixmap = None;
|
|
}
|
|
|
|
void SceneOpenGL::Texture::release()
|
|
{
|
|
if (glxpixmap != None) {
|
|
if (!options->glStrictBinding) {
|
|
glXReleaseTexImageEXT(display(), glxpixmap, GLX_FRONT_LEFT_EXT);
|
|
}
|
|
glXDestroyPixmap(display(), glxpixmap);
|
|
glxpixmap = None;
|
|
}
|
|
}
|
|
|
|
void SceneOpenGL::Texture::findTarget()
|
|
{
|
|
unsigned int new_target = 0;
|
|
if (glXQueryDrawable && glxpixmap != None)
|
|
glXQueryDrawable(display(), glxpixmap, GLX_TEXTURE_TARGET_EXT, &new_target);
|
|
// HACK: this used to be a hack for Xgl.
|
|
// without this hack the NVIDIA blob aborts when trying to bind a texture from
|
|
// a pixmap icon
|
|
if (new_target == 0) {
|
|
if (NPOTTextureSupported() ||
|
|
(isPowerOfTwo(mSize.width()) && isPowerOfTwo(mSize.height()))) {
|
|
new_target = GLX_TEXTURE_2D_EXT;
|
|
} else {
|
|
new_target = GLX_TEXTURE_RECTANGLE_EXT;
|
|
}
|
|
}
|
|
switch(new_target) {
|
|
case GLX_TEXTURE_2D_EXT:
|
|
mTarget = GL_TEXTURE_2D;
|
|
mScale.setWidth(1.0f / mSize.width());
|
|
mScale.setHeight(1.0f / mSize.height());
|
|
break;
|
|
case GLX_TEXTURE_RECTANGLE_EXT:
|
|
mTarget = GL_TEXTURE_RECTANGLE_ARB;
|
|
mScale.setWidth(1.0f);
|
|
mScale.setHeight(1.0f);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
bool SceneOpenGL::Texture::load(const Pixmap& pix, const QSize& size,
|
|
int depth, QRegion region)
|
|
{
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoad1");
|
|
#endif
|
|
if (pix == None || size.isEmpty() || depth < 1)
|
|
return false;
|
|
if (fbcdrawableinfo[ depth ].fbconfig == NULL) {
|
|
kDebug(1212) << "No framebuffer configuration for depth " << depth
|
|
<< "; not binding pixmap" << endl;
|
|
return false;
|
|
}
|
|
|
|
mSize = size;
|
|
if (mTexture == None || !region.isEmpty()) {
|
|
// new texture, or texture contents changed; mipmaps now invalid
|
|
setDirty();
|
|
}
|
|
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoad2");
|
|
#endif
|
|
// tfp mode, simply bind the pixmap to texture
|
|
if (mTexture == None)
|
|
createTexture();
|
|
// The GLX pixmap references the contents of the original pixmap, so it doesn't
|
|
// need to be recreated when the contents change.
|
|
// The texture may or may not use the same storage depending on the EXT_tfp
|
|
// implementation. When options->glStrictBinding is true, the texture uses
|
|
// a different storage and needs to be updated with a call to
|
|
// glXBindTexImageEXT() when the contents of the pixmap has changed.
|
|
if (glxpixmap != None)
|
|
glBindTexture(mTarget, mTexture);
|
|
else {
|
|
int attrs[] = {
|
|
GLX_TEXTURE_FORMAT_EXT, fbcdrawableinfo[ depth ].bind_texture_format,
|
|
GLX_MIPMAP_TEXTURE_EXT, fbcdrawableinfo[ depth ].mipmap,
|
|
None, None, None
|
|
};
|
|
// Specifying the texture target explicitly is reported to cause a performance
|
|
// regression with R300G (see bug #256654).
|
|
if (GLPlatform::instance()->driver() != Driver_R300G) {
|
|
if ((fbcdrawableinfo[ depth ].texture_targets & GLX_TEXTURE_2D_BIT_EXT) &&
|
|
(GLTexture::NPOTTextureSupported() ||
|
|
(isPowerOfTwo(size.width()) && isPowerOfTwo(size.height())))) {
|
|
attrs[ 4 ] = GLX_TEXTURE_TARGET_EXT;
|
|
attrs[ 5 ] = GLX_TEXTURE_2D_EXT;
|
|
} else if (fbcdrawableinfo[ depth ].texture_targets & GLX_TEXTURE_RECTANGLE_BIT_EXT) {
|
|
attrs[ 4 ] = GLX_TEXTURE_TARGET_EXT;
|
|
attrs[ 5 ] = GLX_TEXTURE_RECTANGLE_EXT;
|
|
}
|
|
}
|
|
glxpixmap = glXCreatePixmap(display(), fbcdrawableinfo[ depth ].fbconfig, pix, attrs);
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoadTFP1");
|
|
#endif
|
|
findTarget();
|
|
y_inverted = fbcdrawableinfo[ depth ].y_inverted ? true : false;
|
|
can_use_mipmaps = fbcdrawableinfo[ depth ].mipmap ? true : false;
|
|
glBindTexture(mTarget, mTexture);
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoadTFP2");
|
|
#endif
|
|
if (!options->glStrictBinding)
|
|
glXBindTexImageEXT(display(), glxpixmap, GLX_FRONT_LEFT_EXT, NULL);
|
|
}
|
|
if (options->glStrictBinding)
|
|
// Mark the texture as damaged so it will be updated on the next call to bind()
|
|
glXBindTexImageEXT(display(), glxpixmap, GLX_FRONT_LEFT_EXT, NULL);
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoad0");
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
void SceneOpenGL::Texture::bind()
|
|
{
|
|
glEnable(mTarget);
|
|
glBindTexture(mTarget, mTexture);
|
|
if (options->glStrictBinding) {
|
|
assert(glxpixmap != None);
|
|
glXReleaseTexImageEXT(display(), glxpixmap, GLX_FRONT_LEFT_EXT);
|
|
glXBindTexImageEXT(display(), glxpixmap, GLX_FRONT_LEFT_EXT, NULL);
|
|
setDirty(); // Mipmaps have to be regenerated after updating the texture
|
|
}
|
|
enableFilter();
|
|
if (hasGLVersion(1, 4, 0)) {
|
|
// Lod bias makes the trilinear-filtered texture look a bit sharper
|
|
glTexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, -1.0f);
|
|
}
|
|
}
|
|
|
|
void SceneOpenGL::Texture::unbind()
|
|
{
|
|
if (hasGLVersion(1, 4, 0)) {
|
|
glTexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, 0.0f);
|
|
}
|
|
if (options->glStrictBinding) {
|
|
assert(glxpixmap != None);
|
|
glBindTexture(mTarget, mTexture);
|
|
glXReleaseTexImageEXT(display(), glxpixmap, GLX_FRONT_LEFT_EXT);
|
|
}
|
|
|
|
GLTexture::unbind();
|
|
}
|