src/qt-compositor/hardware_integration/xcomposite_glx/xcompositeglxintegration.cpp

   1 #include "xcompositeglxintegration.h"
   2
   3 #include "waylandobject.h"
   4 #include "wayland_wrapper/wlcompositor.h"
   5 #include "wayland-xcomposite-server-protocol.h"
   6
   7 #include <QtGui/QPlatformNativeInterface>
   8 #include <QtGui/QPlatformGLContext>
   9 #include <private/qapplication_p.h>
  10
  11 #include "xcompositebuffer.h"
  12 #include "xcompositehandler.h"
  13 #include <X11/extensions/Xcomposite.h>
  14
  15 #include <QtCore/QDebug>
  16
  17 QVector<int> qglx_buildSpec()
  18 {
  19     QVector<int> spec(48);
  20     int i = 0;
  21
  22     spec[i++] = GLX_LEVEL;
  23     spec[i++] = 0;
  24     spec[i++] = GLX_DRAWABLE_TYPE; spec[i++] = GLX_PIXMAP_BIT;
  25     spec[i++] = GLX_BIND_TO_TEXTURE_TARGETS_EXT; spec[i++] = GLX_TEXTURE_2D_BIT_EXT;
  26     spec[i++] = GLX_BIND_TO_TEXTURE_RGB_EXT; spec[i++] = TRUE;
  27
  28     spec[i++] = 0;
  29     return spec;
  30 }
  31
  32
  33 struct wl_xcomposite_interface XCompositeHandler::xcomposite_interface = {
  34     XCompositeHandler::create_buffer
  35 };
  36
  37 GraphicsHardwareIntegration *GraphicsHardwareIntegration::createGraphicsHardwareIntegration(WaylandCompositor *compositor)
  38 {
  39     return new XCompositeGLXIntegration(compositor);
  40 }
  41
  42 XCompositeGLXIntegration::XCompositeGLXIntegration(WaylandCompositor *compositor)
  43     : GraphicsHardwareIntegration(compositor)
  44     , mDisplay(0)
  45 {
  46     QPlatformNativeInterface *nativeInterface = QApplicationPrivate::platformIntegration()->nativeInterface();
  47     if (nativeInterface) {
  48         mDisplay = static_cast<Display *>(nativeInterface->nativeResourceForWidget("Display",m_compositor->topLevelWidget()));
  49         if (!mDisplay)
  50             qFatal("could not retireve Display from platform integration");
  51     } else {
  52         qFatal("Platform integration doesn't have native interface");
  53     }
  54     mScreen = XDefaultScreen(mDisplay);
  55 }
  56
  57 void XCompositeGLXIntegration::initializeHardware(Wayland::Display *waylandDisplay)
  58 {
  59     XCompositeHandler *handler = new XCompositeHandler(m_compositor->handle(),mDisplay,m_compositor->topLevelWidget());
  60     waylandDisplay->addGlobalObject(handler->base(), &wl_xcomposite_interface, &XCompositeHandler::xcomposite_interface,XCompositeHandler::send_root_information);
  61
  62     QPlatformGLContext *glContext = m_compositor->topLevelWidget()->platformWindow()->glContext();
  63
  64     m_glxBindTexImageEXT = reinterpret_cast<PFNGLXBINDTEXIMAGEEXTPROC>(glContext->getProcAddress("glXBindTexImageEXT"));
  65     if (!m_glxBindTexImageEXT) {
  66         qDebug() << "Did not find glxBindTexImageExt, everything will FAIL!";
  67     }
  68     m_glxReleaseTexImageEXT = reinterpret_cast<PFNGLXRELEASETEXIMAGEEXTPROC>(glContext->getProcAddress("glXReleaseTexImageEXT"));
  69     if (!m_glxReleaseTexImageEXT) {
  70         qDebug() << "Did not find glxReleaseTexImageExt";
  71     }
  72 }
  73
  74 GLuint XCompositeGLXIntegration::createTextureFromBuffer(wl_buffer *buffer)
  75 {
  76     XCompositeBuffer *compositorBuffer = Wayland::wayland_cast<XCompositeBuffer *>(buffer);
  77     Pixmap pixmap = XCompositeNameWindowPixmap(mDisplay, compositorBuffer->window());
  78
  79     QVector<int> glxConfigSpec = qglx_buildSpec();
  80     int numberOfConfigs;
  81     GLXFBConfig *configs = glXChooseFBConfig(mDisplay,mScreen,glxConfigSpec.constData(),&numberOfConfigs);
  82
  83     QVector<int> attribList;
  84     attribList.append(GLX_TEXTURE_FORMAT_EXT);
  85     attribList.append(GLX_TEXTURE_FORMAT_RGB_EXT);
  86     attribList.append(GLX_TEXTURE_TARGET_EXT);
  87     attribList.append(GLX_TEXTURE_2D_EXT);
  88     attribList.append(0);
  89     GLXPixmap glxPixmap = glXCreatePixmap(mDisplay,*configs,pixmap,attribList.constData());
  90
  91     uint inverted = 0;
  92     glXQueryDrawable(mDisplay, glxPixmap, GLX_Y_INVERTED_EXT,&inverted);
  93     compositorBuffer->setInvertedY(!inverted);
  94
  95     XFree(configs);
  96
  97     GLuint textureId;
  98     glGenTextures(1,&textureId);
  99     glBindTexture(GL_TEXTURE_2D, textureId);
 100     m_glxBindTexImageEXT(mDisplay,glxPixmap,GLX_FRONT_EXT, 0);
 101     //Do we need to change the api so that we do bind and release in the painevent?
 102     //The specification states that when deleting the texture the color buffer is deleted
 103 //    m_glxReleaseTexImageEXT(mDisplay,glxPixmap,GLX_FRONT_EXT);
 104     return textureId;
 105 }
 106
 107 bool XCompositeGLXIntegration::isYInverted(wl_buffer *buffer) const
 108 {
 109     XCompositeBuffer *compositorBuffer = Wayland::wayland_cast<XCompositeBuffer *>(buffer);
 110     return compositorBuffer->isYInverted();
 111 }