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#include "qwaylandglcontext.h"
#include "qwaylanddisplay.h"
#include "qwaylandwindow.h"
#include "qwaylandwindowsurface.h"
#include "qfontconfigdatabase.h"
#include <QImageReader>
#include <QWindowSystemInterface>
#include <QPlatformCursor>
#include <QPaintEngine>
#include <QtGui/QPlatformGLContext>
#include <QtGui/QPlatformWindowFormat>
#include <QtGui/private/qpixmap_raster_p.h>
#include <QtGui/QPlatformWindow>
#include <private/qwindowsurface_gl_p.h>
#include <private/qpixmapdata_gl_p.h>
#include <private/qpaintengineex_opengl2_p.h>
#include <unistd.h>
#include <fcntl.h>
extern "C" {
#include <xf86drm.h>
}
QWaylandGLContext::QWaylandGLContext(QWaylandDisplay *wd, QWaylandWindow *window, const QPlatformWindowFormat &format)
: QPlatformGLContext()
, mFormat(format)
, mDisplay(wd)
, mWindow(window)
, parentFbo(0)
, parentRbo(0)
{
}
QWaylandGLContext::~QWaylandGLContext()
{
glDeleteRenderbuffers(1, &parentRbo);
glDeleteFramebuffers(1, &parentFbo);
}
void QWaylandGLContext::makeCurrent()
{
QWaylandDrmBuffer *mBuffer = (QWaylandDrmBuffer *)mWindow->getBuffer();
QRect geometry = mWindow->geometry();
if (!mBuffer)
return;
eglMakeCurrent(mDisplay->eglDisplay(), 0, 0, mBuffer->mContext);
glViewport(0, 0, geometry.width(), geometry.height());
glBindFramebuffer(GL_FRAMEBUFFER, mBuffer->mFbo);
glBindTexture(GL_TEXTURE_2D, mBuffer->mTexture);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, mBuffer->mImage);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, mBuffer->mTexture, 0);
}
void QWaylandGLContext::doneCurrent()
{
}
/* drawTexture - Draw from a texture into a the current framebuffer
* @rect: GL normalized coords for drawing (between -1.0f and 1.0f)
* @tex_id: texture source
* @texSize: size of source rectangle in Qt coords
* @br: bounding rect for drawing
*/
static void drawTexture(const QRectF &rect, GLuint tex_id,
const QSize &texSize, const QRectF &br)
{
QRectF src = br.isEmpty()
? QRectF(QPointF(), texSize)
: QRectF(QPointF(br.x(), texSize.height() - br.bottom()), br.size());
qreal width = texSize.width();
qreal height = texSize.height();
src.setLeft(src.left() / width);
src.setRight(src.right() / width);
src.setTop(src.top() / height);
src.setBottom(src.bottom() / height);
const GLfloat tx1 = src.left();
const GLfloat tx2 = src.right();
const GLfloat ty1 = src.top();
const GLfloat ty2 = src.bottom();
GLfloat texCoordArray[4*2] = {
tx1, ty2, tx2, ty2, tx2, ty1, tx1, ty1
};
GLfloat vertexArray[4*2];
extern void qt_add_rect_to_array(const QRectF &r, GLfloat *array);
qt_add_rect_to_array(rect, vertexArray);
glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexArray);
glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, texCoordArray);
glBindTexture(GL_TEXTURE_2D, tex_id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
glBindTexture(GL_TEXTURE_2D, 0);
}
void QWaylandGLContext::swapBuffers()
{
QWaylandWindow *mParentWindow = mWindow->getParentWindow();
QWaylandDrmBuffer *mBuffer, *mParentBuffer;
QRect geometry = mWindow->geometry(), parentGeometry;
QGLShaderProgram *blitProgram;
QRectF r;
qreal w;
qreal h;
if (!mParentWindow) {
qDebug("swap without parent widget?\n");
return;
}
if (!mParentWindow->surface()) {
qDebug("parent has no surface??\n");
return;
}
parentGeometry = mParentWindow->geometry();
mBuffer = (QWaylandDrmBuffer *)mWindow->getBuffer();
mParentBuffer = (QWaylandDrmBuffer *)mParentWindow->getBuffer();
glDisable(GL_DEPTH_TEST);
/* These need to be generated against the src context */
if (!parentFbo)
glGenFramebuffers(1, &parentFbo);
if (!parentRbo)
glGenRenderbuffers(1, &parentRbo);
glBindFramebuffer(GL_FRAMEBUFFER, parentFbo);
glBindRenderbuffer(GL_RENDERBUFFER, parentRbo);
glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
mParentBuffer->mImage);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, parentRbo);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, mBuffer->mImage);
glViewport(0, 0, parentGeometry.width(), parentGeometry.height());
blitProgram = QGLEngineSharedShaders::shadersForContext(QGLContext::currentContext())->blitProgram();
blitProgram->bind();
blitProgram->setUniformValue("imageTexture", 0);
/* Transform the target rect to the appropriate coords on the parent */
w = parentGeometry.width();
h = parentGeometry.height();
r.setLeft((geometry.left() / w) * 2.0f - 1.0f);
if (geometry.right() == (parentGeometry.width() - 1))
r.setRight(1.0f);
else
r.setRight((geometry.right() / w) * 2.0f - 1.0f);
r.setTop((geometry.top() / h) * 2.0f - 1.0f);
if (geometry.bottom() == (parentGeometry.height() - 1))
r.setBottom(-1.0f);
else
r.setBottom((geometry.bottom() / h) * 2.0f - 1.0f);
drawTexture(r, mBuffer->mTexture, mParentWindow->widget()->size(), parentGeometry);
wl_surface_damage(mParentWindow->surface(), geometry.left(), geometry.top(),
geometry.right(), geometry.bottom());
/* restore things to the last valid GL state */
makeCurrent();
/* hack: avoid tight swapBuffers loops */
usleep(20000);
}
void *QWaylandGLContext::getProcAddress(const QString &string)
{
return (void *) eglGetProcAddress(string.toLatin1().data());
}
QPlatformGLContext *QWaylandWindow::glContext() const
{
if (!mGLContext) {
QWaylandWindow *that = const_cast<QWaylandWindow *>(this);
that->mGLContext = new QWaylandGLContext(mDisplay, that, widget()->platformWindowFormat());
}
return mGLContext;
}
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