714 lines
27 KiB
C++
714 lines
27 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
|
|
|
|
Based on glcompmgr code by Felix Bellaby.
|
|
Using code from Compiz and Beryl.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
|
|
// This file is included in scene_opengl.cpp
|
|
|
|
// the configs used for the destination
|
|
GLXFBConfig SceneOpenGL::fbcbuffer_db;
|
|
GLXFBConfig SceneOpenGL::fbcbuffer_nondb;
|
|
// the configs used for windows
|
|
SceneOpenGL::FBConfigInfo SceneOpenGL::fbcdrawableinfo[ 32 + 1 ];
|
|
// GLX content
|
|
GLXContext SceneOpenGL::ctxbuffer;
|
|
GLXContext SceneOpenGL::ctxdrawable;
|
|
// the destination drawable where the compositing is done
|
|
GLXDrawable SceneOpenGL::glxbuffer = None;
|
|
GLXDrawable SceneOpenGL::last_pixmap = None;
|
|
|
|
SceneOpenGL::SceneOpenGL(Workspace* ws)
|
|
: Scene(ws)
|
|
, init_ok(false)
|
|
{
|
|
initGLX();
|
|
// check for FBConfig support
|
|
if (!hasGLExtension("GLX_SGIX_fbconfig") || !glXGetFBConfigAttrib || !glXGetFBConfigs ||
|
|
!glXGetVisualFromFBConfig || !glXCreatePixmap || !glXDestroyPixmap ||
|
|
!glXCreateWindow || !glXDestroyWindow) {
|
|
kError(1212) << "GLX_SGIX_fbconfig or required GLX functions missing";
|
|
return; // error
|
|
}
|
|
if (!selectMode())
|
|
return; // error
|
|
if (!initBuffer()) // create destination buffer
|
|
return; // error
|
|
if (!initRenderingContext())
|
|
return; // error
|
|
// Initialize OpenGL
|
|
initGL();
|
|
|
|
GLPlatform *glPlatform = GLPlatform::instance();
|
|
if (glPlatform->isSoftwareEmulation()) {
|
|
kError(1212) << "OpenGL Software Rasterizer detected. Falling back to XRender.";
|
|
QTimer::singleShot(0, Workspace::self(), SLOT(fallbackToXRenderCompositing()));
|
|
return;
|
|
}
|
|
if (!hasGLExtension("GL_ARB_texture_non_power_of_two")
|
|
&& !hasGLExtension("GL_ARB_texture_rectangle")) {
|
|
kError(1212) << "GL_ARB_texture_non_power_of_two and GL_ARB_texture_rectangle missing";
|
|
return; // error
|
|
}
|
|
if (glPlatform->isMesaDriver() && glPlatform->mesaVersion() < kVersionNumber(7, 10)) {
|
|
kError(1212) << "KWin requires at least Mesa 7.10 for OpenGL compositing.";
|
|
return;
|
|
}
|
|
if (db)
|
|
glDrawBuffer(GL_BACK);
|
|
// Check whether certain features are supported
|
|
has_waitSync = false;
|
|
if (glXGetVideoSync && glXIsDirect(display(), ctxbuffer) && options->glVSync) {
|
|
unsigned int sync;
|
|
if (glXGetVideoSync(&sync) == 0) {
|
|
if (glXWaitVideoSync(1, 0, &sync) == 0)
|
|
has_waitSync = true;
|
|
else
|
|
qWarning() << "NO VSYNC! glXWaitVideoSync(1,0,&uint) isn't 0 but" << glXWaitVideoSync(1, 0, &sync);
|
|
} else
|
|
qWarning() << "NO VSYNC! glXGetVideoSync(&uint) isn't 0 but" << glXGetVideoSync(&sync);
|
|
}
|
|
|
|
debug = qstrcmp(qgetenv("KWIN_GL_DEBUG"), "1") == 0;
|
|
|
|
// scene shader setup
|
|
if (GLPlatform::instance()->supports(GLSL)) {
|
|
if (!ShaderManager::instance()->isValid()) {
|
|
kDebug(1212) << "No Scene Shaders available";
|
|
} else {
|
|
// push one shader on the stack so that one is always bound
|
|
// consistency with GLES
|
|
ShaderManager::instance()->pushShader(ShaderManager::SimpleShader);
|
|
}
|
|
}
|
|
|
|
// OpenGL scene setup
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
float fovy = 60.0f;
|
|
float aspect = 1.0f;
|
|
float zNear = 0.1f;
|
|
float zFar = 100.0f;
|
|
float ymax = zNear * tan(fovy * M_PI / 360.0f);
|
|
float ymin = -ymax;
|
|
float xmin = ymin * aspect;
|
|
float xmax = ymax * aspect;
|
|
// swap top and bottom to have OpenGL coordinate system match X system
|
|
glFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity();
|
|
float scaleFactor = 1.1 * tan(fovy * M_PI / 360.0f) / ymax;
|
|
glTranslatef(xmin * scaleFactor, ymax * scaleFactor, -1.1);
|
|
glScalef((xmax - xmin)*scaleFactor / displayWidth(), -(ymax - ymin)*scaleFactor / displayHeight(), 0.001);
|
|
if (checkGLError("Init")) {
|
|
kError(1212) << "OpenGL compositing setup failed";
|
|
return; // error
|
|
}
|
|
kDebug(1212) << "DB:" << db << ", Direct:" << bool(glXIsDirect(display(), ctxbuffer)) << endl;
|
|
init_ok = true;
|
|
}
|
|
|
|
SceneOpenGL::~SceneOpenGL()
|
|
{
|
|
if (!init_ok) {
|
|
// TODO this probably needs to clean up whatever has been created until the failure
|
|
m_overlayWindow->destroy();
|
|
return;
|
|
}
|
|
foreach (Window * w, windows)
|
|
delete w;
|
|
// do cleanup after initBuffer()
|
|
cleanupGL();
|
|
glXMakeCurrent(display(), None, NULL);
|
|
glXDestroyContext(display(), ctxbuffer);
|
|
if (m_overlayWindow->window()) {
|
|
if (hasGLXVersion(1, 3))
|
|
glXDestroyWindow(display(), glxbuffer);
|
|
XDestroyWindow(display(), buffer);
|
|
m_overlayWindow->destroy();
|
|
} else {
|
|
glXDestroyPixmap(display(), glxbuffer);
|
|
XFreeGC(display(), gcroot);
|
|
XFreePixmap(display(), buffer);
|
|
}
|
|
SceneOpenGL::EffectFrame::cleanup();
|
|
checkGLError("Cleanup");
|
|
}
|
|
|
|
bool SceneOpenGL::initTfp()
|
|
{
|
|
if (glXBindTexImageEXT == NULL || glXReleaseTexImageEXT == NULL)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool SceneOpenGL::initRenderingContext()
|
|
{
|
|
bool direct_rendering = options->glDirect;
|
|
KXErrorHandler errs1;
|
|
ctxbuffer = glXCreateNewContext(display(), fbcbuffer, GLX_RGBA_TYPE, NULL,
|
|
direct_rendering ? GL_TRUE : GL_FALSE);
|
|
bool failed = (ctxbuffer == NULL || !glXMakeCurrent(display(), glxbuffer, ctxbuffer));
|
|
if (errs1.error(true)) // always check for error( having it all in one if () could skip
|
|
failed = true; // it due to evaluation short-circuiting
|
|
if (failed) {
|
|
if (!direct_rendering) {
|
|
kDebug(1212).nospace() << "Couldn't initialize rendering context ("
|
|
<< KXErrorHandler::errorMessage(errs1.errorEvent()) << ")";
|
|
return false;
|
|
}
|
|
glXMakeCurrent(display(), None, NULL);
|
|
if (ctxbuffer != NULL)
|
|
glXDestroyContext(display(), ctxbuffer);
|
|
direct_rendering = false; // try again
|
|
KXErrorHandler errs2;
|
|
ctxbuffer = glXCreateNewContext(display(), fbcbuffer, GLX_RGBA_TYPE, NULL, GL_FALSE);
|
|
bool failed = (ctxbuffer == NULL || !glXMakeCurrent(display(), glxbuffer, ctxbuffer));
|
|
if (errs2.error(true))
|
|
failed = true;
|
|
if (failed) {
|
|
kDebug(1212).nospace() << "Couldn't initialize rendering context ("
|
|
<< KXErrorHandler::errorMessage(errs2.errorEvent()) << ")";
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// create destination buffer
|
|
bool SceneOpenGL::initBuffer()
|
|
{
|
|
if (!initBufferConfigs())
|
|
return false;
|
|
if (fbcbuffer_db != NULL && m_overlayWindow->create()) {
|
|
// we have overlay, try to create double-buffered window in it
|
|
fbcbuffer = fbcbuffer_db;
|
|
XVisualInfo* visual = glXGetVisualFromFBConfig(display(), fbcbuffer);
|
|
XSetWindowAttributes attrs;
|
|
attrs.colormap = XCreateColormap(display(), rootWindow(), visual->visual, AllocNone);
|
|
buffer = XCreateWindow(display(), m_overlayWindow->window(), 0, 0, displayWidth(), displayHeight(),
|
|
0, visual->depth, InputOutput, visual->visual, CWColormap, &attrs);
|
|
if (hasGLXVersion(1, 3))
|
|
glxbuffer = glXCreateWindow(display(), fbcbuffer, buffer, NULL);
|
|
else
|
|
glxbuffer = buffer;
|
|
m_overlayWindow->setup(buffer);
|
|
db = true;
|
|
XFree(visual);
|
|
} else if (fbcbuffer_nondb != NULL) {
|
|
// cannot get any double-buffered drawable, will double-buffer using a pixmap
|
|
fbcbuffer = fbcbuffer_nondb;
|
|
XVisualInfo* visual = glXGetVisualFromFBConfig(display(), fbcbuffer);
|
|
XGCValues gcattr;
|
|
gcattr.subwindow_mode = IncludeInferiors;
|
|
gcroot = XCreateGC(display(), rootWindow(), GCSubwindowMode, &gcattr);
|
|
buffer = XCreatePixmap(display(), rootWindow(), displayWidth(), displayHeight(),
|
|
visual->depth);
|
|
glxbuffer = glXCreatePixmap(display(), fbcbuffer, buffer, NULL);
|
|
db = false;
|
|
XFree(visual);
|
|
} else {
|
|
kError(1212) << "Couldn't create output buffer (failed to create overlay window?) !";
|
|
return false; // error
|
|
}
|
|
int vis_buffer;
|
|
glXGetFBConfigAttrib(display(), fbcbuffer, GLX_VISUAL_ID, &vis_buffer);
|
|
XVisualInfo* visinfo_buffer = glXGetVisualFromFBConfig(display(), fbcbuffer);
|
|
kDebug(1212) << "Buffer visual (depth " << visinfo_buffer->depth << "): 0x" << QString::number(vis_buffer, 16);
|
|
XFree(visinfo_buffer);
|
|
return true;
|
|
}
|
|
|
|
// choose the best configs for the destination buffer
|
|
bool SceneOpenGL::initBufferConfigs()
|
|
{
|
|
int cnt;
|
|
GLXFBConfig *fbconfigs = glXGetFBConfigs(display(), DefaultScreen(display()), &cnt);
|
|
fbcbuffer_db = NULL;
|
|
fbcbuffer_nondb = NULL;
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
int back, stencil, depth, caveat, alpha;
|
|
back = i > 0 ? INT_MAX : 1;
|
|
stencil = INT_MAX;
|
|
depth = INT_MAX;
|
|
caveat = INT_MAX;
|
|
alpha = 0;
|
|
for (int j = 0; j < cnt; j++) {
|
|
XVisualInfo *vi;
|
|
int visual_depth;
|
|
vi = glXGetVisualFromFBConfig(display(), fbconfigs[ j ]);
|
|
if (vi == NULL)
|
|
continue;
|
|
visual_depth = vi->depth;
|
|
XFree(vi);
|
|
if (visual_depth != DefaultDepth(display(), DefaultScreen(display())))
|
|
continue;
|
|
int value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_ALPHA_SIZE, &alpha);
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_BUFFER_SIZE, &value);
|
|
if (value != visual_depth && (value - alpha) != visual_depth)
|
|
continue;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_RENDER_TYPE, &value);
|
|
if (!(value & GLX_RGBA_BIT))
|
|
continue;
|
|
int back_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_DOUBLEBUFFER, &back_value);
|
|
if (i > 0) {
|
|
if (back_value > back)
|
|
continue;
|
|
} else {
|
|
if (back_value < back)
|
|
continue;
|
|
}
|
|
int stencil_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_STENCIL_SIZE, &stencil_value);
|
|
if (stencil_value > stencil)
|
|
continue;
|
|
int depth_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_DEPTH_SIZE, &depth_value);
|
|
if (depth_value > depth)
|
|
continue;
|
|
int caveat_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_CONFIG_CAVEAT, &caveat_value);
|
|
if (caveat_value > caveat)
|
|
continue;
|
|
back = back_value;
|
|
stencil = stencil_value;
|
|
depth = depth_value;
|
|
caveat = caveat_value;
|
|
if (i > 0)
|
|
fbcbuffer_nondb = fbconfigs[ j ];
|
|
else
|
|
fbcbuffer_db = fbconfigs[ j ];
|
|
}
|
|
}
|
|
if (cnt)
|
|
XFree(fbconfigs);
|
|
if (fbcbuffer_db == NULL && fbcbuffer_nondb == NULL) {
|
|
kError(1212) << "Couldn't find framebuffer configuration for buffer!";
|
|
return false;
|
|
}
|
|
for (int i = 0; i <= 32; i++) {
|
|
if (fbcdrawableinfo[ i ].fbconfig == NULL)
|
|
continue;
|
|
int vis_drawable = 0;
|
|
glXGetFBConfigAttrib(display(), fbcdrawableinfo[ i ].fbconfig, GLX_VISUAL_ID, &vis_drawable);
|
|
kDebug(1212) << "Drawable visual (depth " << i << "): 0x" << QString::number(vis_drawable, 16);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// make a list of the best configs for windows by depth
|
|
bool SceneOpenGL::initDrawableConfigs()
|
|
{
|
|
int cnt;
|
|
GLXFBConfig *fbconfigs = glXGetFBConfigs(display(), DefaultScreen(display()), &cnt);
|
|
|
|
for (int i = 0; i <= 32; i++) {
|
|
int back, stencil, depth, caveat, alpha, mipmap, rgba;
|
|
back = INT_MAX;
|
|
stencil = INT_MAX;
|
|
depth = INT_MAX;
|
|
caveat = INT_MAX;
|
|
mipmap = 0;
|
|
rgba = 0;
|
|
fbcdrawableinfo[ i ].fbconfig = NULL;
|
|
fbcdrawableinfo[ i ].bind_texture_format = 0;
|
|
fbcdrawableinfo[ i ].texture_targets = 0;
|
|
fbcdrawableinfo[ i ].y_inverted = 0;
|
|
fbcdrawableinfo[ i ].mipmap = 0;
|
|
for (int j = 0; j < cnt; j++) {
|
|
XVisualInfo *vi;
|
|
int visual_depth;
|
|
vi = glXGetVisualFromFBConfig(display(), fbconfigs[ j ]);
|
|
if (vi == NULL)
|
|
continue;
|
|
visual_depth = vi->depth;
|
|
XFree(vi);
|
|
if (visual_depth != i)
|
|
continue;
|
|
int value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_ALPHA_SIZE, &alpha);
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_BUFFER_SIZE, &value);
|
|
if (value != i && (value - alpha) != i)
|
|
continue;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_RENDER_TYPE, &value);
|
|
if (!(value & GLX_RGBA_BIT))
|
|
continue;
|
|
value = 0;
|
|
if (i == 32) {
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_BIND_TO_TEXTURE_RGBA_EXT, &value);
|
|
if (value) {
|
|
// TODO I think this should be set only after the config passes all tests
|
|
rgba = 1;
|
|
fbcdrawableinfo[ i ].bind_texture_format = GLX_TEXTURE_FORMAT_RGBA_EXT;
|
|
}
|
|
}
|
|
if (!value) {
|
|
if (rgba)
|
|
continue;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_BIND_TO_TEXTURE_RGB_EXT, &value);
|
|
if (!value)
|
|
continue;
|
|
fbcdrawableinfo[ i ].bind_texture_format = GLX_TEXTURE_FORMAT_RGB_EXT;
|
|
}
|
|
int back_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_DOUBLEBUFFER, &back_value);
|
|
if (back_value > back)
|
|
continue;
|
|
int stencil_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_STENCIL_SIZE, &stencil_value);
|
|
if (stencil_value > stencil)
|
|
continue;
|
|
int depth_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_DEPTH_SIZE, &depth_value);
|
|
if (depth_value > depth)
|
|
continue;
|
|
int mipmap_value = -1;
|
|
if (GLTexture::framebufferObjectSupported()) {
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_BIND_TO_MIPMAP_TEXTURE_EXT, &mipmap_value);
|
|
if (mipmap_value < mipmap)
|
|
continue;
|
|
}
|
|
int caveat_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_CONFIG_CAVEAT, &caveat_value);
|
|
if (caveat_value > caveat)
|
|
continue;
|
|
// ok, config passed all tests, it's the best one so far
|
|
fbcdrawableinfo[ i ].fbconfig = fbconfigs[ j ];
|
|
caveat = caveat_value;
|
|
back = back_value;
|
|
stencil = stencil_value;
|
|
depth = depth_value;
|
|
mipmap = mipmap_value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_BIND_TO_TEXTURE_TARGETS_EXT, &value);
|
|
fbcdrawableinfo[ i ].texture_targets = value;
|
|
glXGetFBConfigAttrib(display(), fbconfigs[ j ],
|
|
GLX_Y_INVERTED_EXT, &value);
|
|
fbcdrawableinfo[ i ].y_inverted = value;
|
|
fbcdrawableinfo[ i ].mipmap = mipmap;
|
|
}
|
|
}
|
|
if (cnt)
|
|
XFree(fbconfigs);
|
|
if (fbcdrawableinfo[ DefaultDepth(display(), DefaultScreen(display()))].fbconfig == NULL) {
|
|
kError(1212) << "Couldn't find framebuffer configuration for default depth!";
|
|
return false;
|
|
}
|
|
if (fbcdrawableinfo[ 32 ].fbconfig == NULL) {
|
|
kError(1212) << "Couldn't find framebuffer configuration for depth 32 (no ARGB GLX visual)!";
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// the entry function for painting
|
|
void SceneOpenGL::paint(QRegion damage, ToplevelList toplevels)
|
|
{
|
|
QElapsedTimer renderTimer;
|
|
renderTimer.start();
|
|
|
|
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 (m_overlayWindow->window()) // show the window only after the first pass, since
|
|
m_overlayWindow->show(); // that pass may take long
|
|
lastRenderTime = renderTimer.elapsed();
|
|
flushBuffer(mask, damage);
|
|
// 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 or the texture unit is enabled, 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);
|
|
}
|
|
bool reenableTexUnit = false;
|
|
if (glIsEnabled(GL_TEXTURE_2D)) {
|
|
glDisable(GL_TEXTURE_2D);
|
|
reenableTexUnit = true;
|
|
}
|
|
// 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);
|
|
if (reenableTexUnit) {
|
|
glEnable(GL_TEXTURE_2D);
|
|
}
|
|
// 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
|
|
//****************************************
|
|
|
|
SceneOpenGL::TexturePrivate::TexturePrivate()
|
|
{
|
|
m_glxpixmap = None;
|
|
}
|
|
|
|
SceneOpenGL::TexturePrivate::~TexturePrivate()
|
|
{
|
|
release();
|
|
}
|
|
|
|
void SceneOpenGL::TexturePrivate::release()
|
|
{
|
|
if (m_glxpixmap != None) {
|
|
if (!options->glStrictBinding) {
|
|
glXReleaseTexImageEXT(display(), m_glxpixmap, GLX_FRONT_LEFT_EXT);
|
|
}
|
|
glXDestroyPixmap(display(), m_glxpixmap);
|
|
m_glxpixmap = None;
|
|
}
|
|
}
|
|
|
|
void SceneOpenGL::Texture::findTarget()
|
|
{
|
|
Q_D(Texture);
|
|
unsigned int new_target = 0;
|
|
if (glXQueryDrawable && d->m_glxpixmap != None)
|
|
glXQueryDrawable(display(), d->m_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(d->m_size.width()) && isPowerOfTwo(d->m_size.height()))) {
|
|
new_target = GLX_TEXTURE_2D_EXT;
|
|
} else {
|
|
new_target = GLX_TEXTURE_RECTANGLE_EXT;
|
|
}
|
|
}
|
|
switch(new_target) {
|
|
case GLX_TEXTURE_2D_EXT:
|
|
d->m_target = GL_TEXTURE_2D;
|
|
d->m_scale.setWidth(1.0f / d->m_size.width());
|
|
d->m_scale.setHeight(1.0f / d->m_size.height());
|
|
break;
|
|
case GLX_TEXTURE_RECTANGLE_EXT:
|
|
d->m_target = GL_TEXTURE_RECTANGLE_ARB;
|
|
d->m_scale.setWidth(1.0f);
|
|
d->m_scale.setHeight(1.0f);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
bool SceneOpenGL::Texture::load(const Pixmap& pix, const QSize& size,
|
|
int depth, QRegion region)
|
|
{
|
|
Q_UNUSED(region)
|
|
// decrease the reference counter for the old texture
|
|
d_ptr = new TexturePrivate();
|
|
|
|
Q_D(Texture);
|
|
#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;
|
|
}
|
|
|
|
d->m_size = size;
|
|
// 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
|
|
glGenTextures(1, &d->m_texture);
|
|
// 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.
|
|
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;
|
|
}
|
|
}
|
|
d->m_glxpixmap = glXCreatePixmap(display(), fbcdrawableinfo[ depth ].fbconfig, pix, attrs);
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoadTFP1");
|
|
#endif
|
|
findTarget();
|
|
d->m_yInverted = fbcdrawableinfo[ depth ].y_inverted ? true : false;
|
|
d->m_canUseMipmaps = fbcdrawableinfo[ depth ].mipmap ? true : false;
|
|
glBindTexture(d->m_target, d->m_texture);
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoadTFP2");
|
|
#endif
|
|
glXBindTexImageEXT(display(), d->m_glxpixmap, GLX_FRONT_LEFT_EXT, NULL);
|
|
#ifdef CHECK_GL_ERROR
|
|
checkGLError("TextureLoad0");
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
void SceneOpenGL::TexturePrivate::bind()
|
|
{
|
|
GLTexturePrivate::bind();
|
|
if (options->glStrictBinding && m_glxpixmap) {
|
|
glXReleaseTexImageEXT(display(), m_glxpixmap, GLX_FRONT_LEFT_EXT);
|
|
glXBindTexImageEXT(display(), m_glxpixmap, GLX_FRONT_LEFT_EXT, NULL);
|
|
m_hasValidMipmaps = false; // 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::TexturePrivate::unbind()
|
|
{
|
|
if (hasGLVersion(1, 4, 0)) {
|
|
glTexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, 0.0f);
|
|
}
|
|
if (options->glStrictBinding && m_glxpixmap) {
|
|
glBindTexture(m_target, m_texture);
|
|
glXReleaseTexImageEXT(display(), m_glxpixmap, GLX_FRONT_LEFT_EXT);
|
|
}
|
|
|
|
GLTexturePrivate::unbind();
|
|
}
|
|
|