brcmeglintegration.cpp

Go to the documentation of this file.

// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "brcmeglintegration.h"
#include "brcmbuffer.h"
#include <QtWaylandCompositor/qwaylandsurface.h>
#include <qpa/qplatformnativeinterface.h>
#include <QtGui/QGuiApplication>
#include <QtGui/QOpenGLContext>
#include <QOpenGLTexture>
#include <qpa/qplatformscreen.h>
#include <QtGui/QWindow>
 
#include <EGL/egl.h>
#include <EGL/eglext.h>
 
#include <EGL/eglext_brcm.h>
 
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
 
QT_BEGIN_NAMESPACE
 
class BrcmEglIntegrationPrivate
{
public:
    BrcmEglIntegrationPrivate() = default;
 
    static BrcmEglIntegrationPrivate *get(BrcmEglIntegration *integration);
 
    EGLDisplay egl_display = EGL_NO_DISPLAY;
    bool valid = false;
    PFNEGLQUERYGLOBALIMAGEBRCMPROC eglQueryGlobalImageBRCM;
    PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
    PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR;
    PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR;
};
 
BrcmEglIntegration::BrcmEglIntegration()
    : d_ptr(new BrcmEglIntegrationPrivate)
{
}
 
void BrcmEglIntegration::initializeHardware(struct ::wl_display *display)
{
    Q_D(BrcmEglIntegration);
 
    QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
    if (nativeInterface) {
        d->egl_display = nativeInterface->nativeResourceForIntegration("EglDisplay");
        if (!d->egl_display)
            qWarning("Failed to acquire EGL display from platform integration");
 
        d->eglQueryGlobalImageBRCM = (PFNEGLQUERYGLOBALIMAGEBRCMPROC) eglGetProcAddress("eglQueryGlobalImageBRCM");
 
        if (!d->eglQueryGlobalImageBRCM) {
            qWarning("Failed to resolve eglQueryGlobalImageBRCM");
            return;
        }
 
        d->glEGLImageTargetTexture2DOES = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)eglGetProcAddress("glEGLImageTargetTexture2DOES");
 
        if (!d->glEGLImageTargetTexture2DOES) {
            qWarning("Failed to resolve glEGLImageTargetTexture2DOES");
            return;
        }
 
        d->eglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC)eglGetProcAddress("eglCreateImageKHR");
 
        if (!d->eglCreateImageKHR) {
            qWarning("Failed to resolve eglCreateImageKHR");
            return;
        }
 
        d->eglDestroyImageKHR = (PFNEGLDESTROYIMAGEKHRPROC)eglGetProcAddress("eglDestroyImageKHR");
 
        if (!d->eglDestroyImageKHR) {
            qWarning("Failed to resolve eglDestroyImageKHR");
            return;
        }
        d->valid = true;
        init(display, 1);
    }
}
 
QtWayland::ClientBuffer *BrcmEglIntegration::createBufferFor(wl_resource *buffer)
{
    if (wl_shm_buffer_get(buffer))
        return nullptr;
    return new BrcmEglClientBuffer(this, buffer);
}
 
BrcmEglIntegrationPrivate *BrcmEglIntegrationPrivate::get(BrcmEglIntegration *integration)
{
    return integration->d_ptr.data();
}
 
QOpenGLTexture *BrcmEglClientBuffer::toOpenGlTexture(int plane)
{
    Q_UNUSED(plane);
 
    auto d = BrcmEglIntegrationPrivate::get(m_integration);
    if (!d->valid) {
        qWarning("bindTextureToBuffer failed!");
        return nullptr;
    }
 
    BrcmBuffer *brcmBuffer = BrcmBuffer::fromResource(m_buffer);
 
    if (!d->eglQueryGlobalImageBRCM(brcmBuffer->handle(), brcmBuffer->handle() + 2)) {
        qWarning("eglQueryGlobalImageBRCM failed!");
        return nullptr;
    }
 
    EGLImageKHR image = d->eglCreateImageKHR(d->egl_display, EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR, (EGLClientBuffer)brcmBuffer->handle(), NULL);
    if (image == EGL_NO_IMAGE_KHR)
        qWarning("eglCreateImageKHR() failed: %x\n", eglGetError());
 
    if (!m_texture) {
        m_texture = new QOpenGLTexture(QOpenGLTexture::Target2D);
        m_texture->create();
    }
 
    m_texture->bind();
 
    d->glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
 
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
    d->eglDestroyImageKHR(d->egl_display, image);
 
    return m_texture;
}
 
void BrcmEglIntegration::brcm_bind_resource(Resource *)
{
}
 
void BrcmEglIntegration::brcm_create_buffer(Resource *resource, uint32_t id, int32_t width, int32_t height, wl_array *data)
{
    new BrcmBuffer(resource->client(), id, QSize(width, height), static_cast<EGLint *>(data->data), data->size / sizeof(EGLint));
}
 
BrcmEglClientBuffer::BrcmEglClientBuffer(BrcmEglIntegration *integration, wl_resource *buffer)
    : ClientBuffer(buffer)
    , m_integration(integration)
{
}
 
QWaylandBufferRef::BufferFormatEgl BrcmEglClientBuffer::bufferFormatEgl() const
{
    return QWaylandBufferRef::BufferFormatEgl_RGBA;
}
 
QSize BrcmEglClientBuffer::size() const
{
    BrcmBuffer *brcmBuffer = BrcmBuffer::fromResource(m_buffer);
    return brcmBuffer->size();
}
 
QWaylandSurface::Origin BrcmEglClientBuffer::origin() const
{
    BrcmBuffer *brcmBuffer = BrcmBuffer::fromResource(m_buffer);
    return brcmBuffer->isYInverted() ? QWaylandSurface::OriginTopLeft : QWaylandSurface::OriginBottomLeft;
}
 
 
QT_END_NAMESPACE