797 lines
26 KiB
C++
797 lines
26 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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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "egl_gbm_backend.h"
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// kwin
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#include "composite.h"
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#include "drm_backend.h"
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#include "drm_buffer_gbm.h"
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#include "drm_output.h"
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#include "gbm_surface.h"
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#include "logging.h"
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#include "options.h"
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#include "renderloop_p.h"
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#include "screens.h"
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#include "surfaceitem_wayland.h"
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#include "drm_gpu.h"
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#include "linux_dmabuf.h"
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// kwin libs
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#include <kwinglplatform.h>
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#include <kwineglimagetexture.h>
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// system
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#include <gbm.h>
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#include <unistd.h>
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#include <errno.h>
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// kwayland server
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#include "KWaylandServer/surface_interface.h"
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#include "KWaylandServer/buffer_interface.h"
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#include "KWaylandServer/linuxdmabuf_v1_interface.h"
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#include <egl_dmabuf.h>
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#include <drm_fourcc.h>
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namespace KWin
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{
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EglGbmBackend::EglGbmBackend(DrmBackend *drmBackend, DrmGpu *gpu)
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: AbstractEglDrmBackend(drmBackend, gpu)
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{
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}
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EglGbmBackend::~EglGbmBackend()
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{
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cleanup();
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}
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void EglGbmBackend::cleanupSurfaces()
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{
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for (auto it = m_outputs.begin(); it != m_outputs.end(); ++it) {
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cleanupOutput(*it);
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}
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m_outputs.clear();
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}
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void EglGbmBackend::cleanupFramebuffer(Output &output)
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{
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if (!output.render.framebuffer) {
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return;
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}
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makeContextCurrent(output);
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glDeleteTextures(1, &output.render.texture);
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output.render.texture = 0;
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glDeleteFramebuffers(1, &output.render.framebuffer);
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output.render.framebuffer = 0;
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}
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void EglGbmBackend::cleanupOutput(Output &output)
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{
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cleanupFramebuffer(output);
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if (output.eglSurface != EGL_NO_SURFACE) {
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// gbm buffers have to be released before destroying the egl surface
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output.output->releaseGbm();
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eglDestroySurface(eglDisplay(), output.eglSurface);
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}
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}
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bool EglGbmBackend::initializeEgl()
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{
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initClientExtensions();
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EGLDisplay display = m_gpu->eglDisplay();
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// Use eglGetPlatformDisplayEXT() to get the display pointer
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// if the implementation supports it.
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if (display == EGL_NO_DISPLAY) {
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const bool hasMesaGBM = hasClientExtension(QByteArrayLiteral("EGL_MESA_platform_gbm"));
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const bool hasKHRGBM = hasClientExtension(QByteArrayLiteral("EGL_KHR_platform_gbm"));
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const GLenum platform = hasMesaGBM ? EGL_PLATFORM_GBM_MESA : EGL_PLATFORM_GBM_KHR;
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if (!hasClientExtension(QByteArrayLiteral("EGL_EXT_platform_base")) ||
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(!hasMesaGBM && !hasKHRGBM)) {
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setFailed("Missing one or more extensions between EGL_EXT_platform_base, "
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"EGL_MESA_platform_gbm, EGL_KHR_platform_gbm");
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return false;
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}
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auto device = gbm_create_device(m_gpu->fd());
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if (!device) {
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setFailed("Could not create gbm device");
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return false;
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}
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m_gpu->setGbmDevice(device);
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display = eglGetPlatformDisplayEXT(platform, device, nullptr);
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m_gpu->setEglDisplay(display);
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}
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if (display == EGL_NO_DISPLAY) {
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return false;
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}
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setEglDisplay(display);
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return initEglAPI();
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}
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void EglGbmBackend::init()
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{
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if (!initializeEgl()) {
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setFailed("Could not initialize egl");
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return;
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}
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if (!supportsSurfacelessContext()) {
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setFailed("EGL_KHR_surfaceless_context extension is unavailable!");
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return;
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}
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if (!initRenderingContext()) {
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setFailed("Could not initialize rendering context");
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return;
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}
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initBufferAge();
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// at the moment: no secondary GPU -> no OpenGL context!
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if (isPrimary()) {
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initKWinGL();
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initWayland();
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}
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}
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bool EglGbmBackend::initRenderingContext()
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{
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initBufferConfigs();
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// no secondary GPU -> no OpenGL context!
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if (isPrimary() && !createContext()) {
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return false;
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}
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const auto outputs = m_gpu->outputs();
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for (DrmOutput *drmOutput: outputs) {
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addOutput(drmOutput);
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}
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if (m_outputs.isEmpty() && !outputs.isEmpty()) {
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qCCritical(KWIN_DRM) << "Create Window Surfaces failed";
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return false;
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}
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if (isPrimary()) {
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return makeCurrent();
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}
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return true;
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}
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EGLSurface EglGbmBackend::createEglSurface(QSharedPointer<GbmSurface> gbmSurface) const
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{
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auto eglSurface = eglCreatePlatformWindowSurfaceEXT(eglDisplay(), config(),
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(void *)(gbmSurface->surface()), nullptr);
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if (eglSurface == EGL_NO_SURFACE) {
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qCCritical(KWIN_DRM) << "Creating EGL surface failed";
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return EGL_NO_SURFACE;
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}
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return eglSurface;
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}
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bool EglGbmBackend::resetOutput(Output &output, DrmOutput *drmOutput)
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{
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output.output = drmOutput;
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const QSize size = drmOutput->hardwareTransforms() ? drmOutput->pixelSize() :
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drmOutput->modeSize();
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int flags = GBM_BO_USE_RENDERING;
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if (drmOutput->gpu() == m_gpu) {
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flags |= GBM_BO_USE_SCANOUT;
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} else {
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flags |= GBM_BO_USE_LINEAR;
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}
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auto gbmSurface = QSharedPointer<GbmSurface>::create(m_gpu->gbmDevice(),
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size.width(), size.height(),
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GBM_FORMAT_XRGB8888,
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flags);
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if (!gbmSurface) {
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qCCritical(KWIN_DRM) << "Creating GBM surface failed";
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return false;
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}
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auto eglSurface = createEglSurface(gbmSurface);
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if (eglSurface == EGL_NO_SURFACE) {
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return false;
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}
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// destroy previous surface
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if (output.eglSurface != EGL_NO_SURFACE) {
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// gbm buffers have to be released before destroying the egl surface
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output.output->releaseGbm();
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eglDestroySurface(eglDisplay(), output.eglSurface);
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}
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output.eglSurface = eglSurface;
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output.gbmSurface = gbmSurface;
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resetFramebuffer(output);
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return true;
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}
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void EglGbmBackend::addOutput(DrmOutput *drmOutput)
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{
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if (isPrimary()) {
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Output newOutput;
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if (resetOutput(newOutput, drmOutput)) {
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QVector<Output> &outputs = drmOutput->gpu() == m_gpu ? m_outputs : m_secondaryGpuOutputs;
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connect(drmOutput, &DrmOutput::modeChanged, this,
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[drmOutput, &outputs, this] {
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auto it = std::find_if(outputs.begin(), outputs.end(),
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[drmOutput] (const auto &output) {
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return output.output == drmOutput;
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}
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);
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if (it == outputs.end()) {
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return;
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}
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resetOutput(*it, drmOutput);
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}
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);
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outputs << newOutput;
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}
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} else {
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Output newOutput;
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newOutput.output = drmOutput;
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renderingBackend()->addOutput(drmOutput);
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m_outputs << newOutput;
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}
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}
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void EglGbmBackend::removeOutput(DrmOutput *drmOutput)
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{
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QVector<Output> &outputs = drmOutput->gpu() == m_gpu ? m_outputs : m_secondaryGpuOutputs;
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auto it = std::find_if(outputs.begin(), outputs.end(),
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[drmOutput] (const Output &output) {
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return output.output == drmOutput;
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}
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);
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if (it == outputs.end()) {
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return;
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}
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if (isPrimary()) {
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cleanupOutput(*it);
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} else {
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renderingBackend()->removeOutput((*it).output);
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}
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outputs.erase(it);
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}
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int EglGbmBackend::getDmabufForSecondaryGpuOutput(AbstractOutput *output, uint32_t *format, uint32_t *stride)
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{
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DrmOutput *drmOutput = static_cast<DrmOutput*>(output);
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auto it = std::find_if(m_secondaryGpuOutputs.begin(), m_secondaryGpuOutputs.end(),
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[drmOutput] (const Output &output) {
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return output.output == drmOutput;
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}
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);
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if (it == m_secondaryGpuOutputs.end()) {
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return -1;
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}
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renderFramebufferToSurface(*it);
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auto error = eglSwapBuffers(eglDisplay(), it->eglSurface);
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if (error != EGL_TRUE) {
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qCDebug(KWIN_DRM) << "an error occurred while swapping buffers" << error;
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it->secondaryBuffer = nullptr;
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return -1;
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}
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it->secondaryBuffer = QSharedPointer<GbmBuffer>::create(it->gbmSurface);
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int fd = gbm_bo_get_fd(it->secondaryBuffer->getBo());
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if (fd == -1) {
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qCDebug(KWIN_DRM) << "failed to export gbm_bo as dma-buf!";
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return -1;
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}
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*format = gbm_bo_get_format(it->secondaryBuffer->getBo());
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*stride = gbm_bo_get_stride(it->secondaryBuffer->getBo());
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return fd;
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}
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QRegion EglGbmBackend::beginFrameForSecondaryGpu(AbstractOutput *output)
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{
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DrmOutput *drmOutput = static_cast<DrmOutput*>(output);
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auto it = std::find_if(m_secondaryGpuOutputs.begin(), m_secondaryGpuOutputs.end(),
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[drmOutput] (const Output &output) {
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return output.output == drmOutput;
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}
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);
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if (it == m_secondaryGpuOutputs.end()) {
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return QRegion();
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}
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return prepareRenderingForOutput(*it);
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}
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const float vertices[] = {
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-1.0f, 1.0f,
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-1.0f, -1.0f,
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1.0f, -1.0f,
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-1.0f, 1.0f,
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1.0f, -1.0f,
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1.0f, 1.0f,
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};
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const float texCoords[] = {
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0.0f, 1.0f,
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0.0f, 0.0f,
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1.0f, 0.0f,
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0.0f, 1.0f,
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1.0f, 0.0f,
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1.0f, 1.0f
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};
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bool EglGbmBackend::resetFramebuffer(Output &output)
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{
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cleanupFramebuffer(output);
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if (output.output->hardwareTransforms()) {
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// No need for an extra render target.
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return true;
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}
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makeContextCurrent(output);
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glGenFramebuffers(1, &output.render.framebuffer);
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glBindFramebuffer(GL_FRAMEBUFFER, output.render.framebuffer);
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GLRenderTarget::setKWinFramebuffer(output.render.framebuffer);
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glGenTextures(1, &output.render.texture);
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glBindTexture(GL_TEXTURE_2D, output.render.texture);
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const QSize texSize = output.output->pixelSize();
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texSize.width(), texSize.height(),
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0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glBindTexture(GL_TEXTURE_2D, 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
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output.render.texture, 0);
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if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
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qCWarning(KWIN_DRM) << "Error: framebuffer not complete";
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return false;
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}
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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GLRenderTarget::setKWinFramebuffer(0);
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return true;
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}
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void EglGbmBackend::initRenderTarget(Output &output)
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{
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if (output.render.vbo) {
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// Already initialized.
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return;
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}
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QSharedPointer<GLVertexBuffer> vbo(new GLVertexBuffer(KWin::GLVertexBuffer::Static));
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vbo->setData(6, 2, vertices, texCoords);
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output.render.vbo = vbo;
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}
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void EglGbmBackend::renderFramebufferToSurface(Output &output)
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{
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if (!output.render.framebuffer && isPrimary()) {
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// No additional render target.
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return;
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}
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const auto size = output.output->modeSize();
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if (isPrimary()) {
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// primary GPU
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makeContextCurrent(output);
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glViewport(0, 0, size.width(), size.height());
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auto shader = ShaderManager::instance()->pushShader(ShaderTrait::MapTexture);
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QMatrix4x4 mvpMatrix;
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const DrmOutput *drmOutput = output.output;
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switch (drmOutput->transform()) {
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case DrmOutput::Transform::Normal:
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case DrmOutput::Transform::Flipped:
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break;
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case DrmOutput::Transform::Rotated90:
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case DrmOutput::Transform::Flipped90:
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mvpMatrix.rotate(90, 0, 0, 1);
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break;
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case DrmOutput::Transform::Rotated180:
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case DrmOutput::Transform::Flipped180:
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mvpMatrix.rotate(180, 0, 0, 1);
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break;
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case DrmOutput::Transform::Rotated270:
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case DrmOutput::Transform::Flipped270:
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mvpMatrix.rotate(270, 0, 0, 1);
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break;
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}
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switch (drmOutput->transform()) {
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case DrmOutput::Transform::Flipped:
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case DrmOutput::Transform::Flipped90:
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case DrmOutput::Transform::Flipped180:
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case DrmOutput::Transform::Flipped270:
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mvpMatrix.scale(-1, 1);
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break;
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default:
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break;
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}
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shader->setUniform(GLShader::ModelViewProjectionMatrix, mvpMatrix);
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initRenderTarget(output);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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GLRenderTarget::setKWinFramebuffer(0);
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glBindTexture(GL_TEXTURE_2D, output.render.texture);
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output.render.vbo->render(GL_TRIANGLES);
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ShaderManager::instance()->popShader();
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glBindTexture(GL_TEXTURE_2D, 0);
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} else {
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// secondary GPU: render on primary and import framebuffer
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uint32_t stride = 0;
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uint32_t format = 0;
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int fd = renderingBackend()->getDmabufForSecondaryGpuOutput(output.output, &format, &stride);
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if (fd != -1) {
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struct gbm_import_fd_data data = {};
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data.fd = fd;
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data.width = (uint32_t) size.width();
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data.height = (uint32_t) size.height();
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data.stride = stride;
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data.format = format;
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if (gbm_bo *importedBuffer = gbm_bo_import(m_gpu->gbmDevice(), GBM_BO_IMPORT_FD, &data, GBM_BO_USE_SCANOUT | GBM_BO_USE_LINEAR)) {
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output.buffer = QSharedPointer<DrmGbmBuffer>::create(m_gpu, importedBuffer, nullptr);
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} else {
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qCDebug(KWIN_DRM) << "failed to import dma-buf!" << strerror(errno);
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output.buffer = nullptr;
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}
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close(fd);
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}
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}
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}
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void EglGbmBackend::prepareRenderFramebuffer(const Output &output) const
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{
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// When render.framebuffer is 0 we may just reset to the screen framebuffer.
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glBindFramebuffer(GL_FRAMEBUFFER, output.render.framebuffer);
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GLRenderTarget::setKWinFramebuffer(output.render.framebuffer);
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}
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bool EglGbmBackend::makeContextCurrent(const Output &output) const
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{
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Q_ASSERT(isPrimary());
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const EGLSurface surface = output.eglSurface;
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if (surface == EGL_NO_SURFACE) {
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return false;
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}
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if (eglMakeCurrent(eglDisplay(), surface, surface, context()) == EGL_FALSE) {
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qCCritical(KWIN_DRM) << "Make Context Current failed" << eglGetError();
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return false;
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}
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return true;
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}
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bool EglGbmBackend::initBufferConfigs()
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{
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const EGLint config_attribs[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RED_SIZE, 1,
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EGL_GREEN_SIZE, 1,
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EGL_BLUE_SIZE, 1,
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EGL_ALPHA_SIZE, 0,
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EGL_RENDERABLE_TYPE, isOpenGLES() ? EGL_OPENGL_ES2_BIT : EGL_OPENGL_BIT,
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EGL_CONFIG_CAVEAT, EGL_NONE,
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EGL_NONE,
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};
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EGLint count;
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EGLConfig configs[1024];
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if (!eglChooseConfig(eglDisplay(), config_attribs, configs,
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sizeof(configs) / sizeof(EGLConfig),
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&count)) {
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qCCritical(KWIN_DRM) << "choose config failed";
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return false;
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}
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qCDebug(KWIN_DRM) << "EGL buffer configs count:" << count;
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// Loop through all configs, choosing the first one that has suitable format.
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for (EGLint i = 0; i < count; i++) {
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EGLint gbmFormat;
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// Query some configuration parameters, to show in debug log.
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eglGetConfigAttrib(eglDisplay(), configs[i], EGL_NATIVE_VISUAL_ID, &gbmFormat);
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if (KWIN_DRM().isDebugEnabled()) {
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// GBM formats are declared as FOURCC code (integer from ASCII chars, so use this fact).
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char gbmFormatStr[sizeof(EGLint) + 1] = {0};
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memcpy(gbmFormatStr, &gbmFormat, sizeof(EGLint));
|
|
|
|
// Query number of bits for color channel.
|
|
EGLint blueSize, redSize, greenSize, alphaSize;
|
|
eglGetConfigAttrib(eglDisplay(), configs[i], EGL_RED_SIZE, &redSize);
|
|
eglGetConfigAttrib(eglDisplay(), configs[i], EGL_GREEN_SIZE, &greenSize);
|
|
eglGetConfigAttrib(eglDisplay(), configs[i], EGL_BLUE_SIZE, &blueSize);
|
|
eglGetConfigAttrib(eglDisplay(), configs[i], EGL_ALPHA_SIZE, &alphaSize);
|
|
qCDebug(KWIN_DRM) << " EGL config #" << i << " has GBM FOURCC format:" << gbmFormatStr
|
|
<< "; color sizes (RGBA order):"
|
|
<< redSize << greenSize << blueSize << alphaSize;
|
|
}
|
|
|
|
if ((gbmFormat == GBM_FORMAT_XRGB8888) || (gbmFormat == GBM_FORMAT_ARGB8888)) {
|
|
setConfig(configs[i]);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
qCCritical(KWIN_DRM) << "Choosing EGL config did not return a suitable config. There were"
|
|
<< count << "configs.";
|
|
return false;
|
|
}
|
|
|
|
static QVector<EGLint> regionToRects(const QRegion ®ion, AbstractWaylandOutput *output)
|
|
{
|
|
const int height = output->modeSize().height();
|
|
|
|
const QMatrix4x4 matrix = DrmOutput::logicalToNativeMatrix(output->geometry(),
|
|
output->scale(),
|
|
output->transform());
|
|
|
|
QVector<EGLint> rects;
|
|
rects.reserve(region.rectCount() * 4);
|
|
for (const QRect &_rect : region) {
|
|
const QRect rect = matrix.mapRect(_rect);
|
|
|
|
rects << rect.left();
|
|
rects << height - (rect.y() + rect.height());
|
|
rects << rect.width();
|
|
rects << rect.height();
|
|
}
|
|
return rects;
|
|
}
|
|
|
|
void EglGbmBackend::aboutToStartPainting(int screenId, const QRegion &damagedRegion)
|
|
{
|
|
Q_ASSERT_X(screenId != -1, "aboutToStartPainting", "not using per screen rendering");
|
|
const Output &output = m_outputs.at(screenId);
|
|
if (output.bufferAge > 0 && !damagedRegion.isEmpty() && supportsPartialUpdate()) {
|
|
const QRegion region = damagedRegion & output.output->geometry();
|
|
|
|
QVector<EGLint> rects = regionToRects(region, output.output);
|
|
const bool correct = eglSetDamageRegionKHR(eglDisplay(), output.eglSurface,
|
|
rects.data(), rects.count()/4);
|
|
if (!correct) {
|
|
qCWarning(KWIN_DRM) << "failed eglSetDamageRegionKHR" << eglGetError();
|
|
}
|
|
}
|
|
}
|
|
|
|
bool EglGbmBackend::presentOnOutput(Output &output, const QRegion &damagedRegion)
|
|
{
|
|
if (isPrimary() && !directScanoutActive(output)) {
|
|
if (supportsSwapBuffersWithDamage()) {
|
|
QVector<EGLint> rects = regionToRects(damagedRegion, output.output);
|
|
if (!eglSwapBuffersWithDamageEXT(eglDisplay(), output.eglSurface,
|
|
rects.data(), rects.count() / 4)) {
|
|
qCCritical(KWIN_DRM, "eglSwapBuffersWithDamageEXT() failed: %x", eglGetError());
|
|
return false;
|
|
}
|
|
} else {
|
|
if (!eglSwapBuffers(eglDisplay(), output.eglSurface)) {
|
|
qCCritical(KWIN_DRM, "eglSwapBuffers() failed: %x", eglGetError());
|
|
return false;
|
|
}
|
|
}
|
|
output.buffer = QSharedPointer<DrmGbmBuffer>::create(m_gpu, output.gbmSurface);
|
|
} else if (!output.buffer) {
|
|
qCDebug(KWIN_DRM) << "imported gbm_bo does not exist!";
|
|
return false;
|
|
}
|
|
|
|
Q_EMIT output.output->outputChange(damagedRegion);
|
|
if (!output.output->present(output.buffer)) {
|
|
return false;
|
|
}
|
|
|
|
if (supportsBufferAge()) {
|
|
eglQuerySurface(eglDisplay(), output.eglSurface, EGL_BUFFER_AGE_EXT, &output.bufferAge);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool EglGbmBackend::directScanoutActive(const Output &output)
|
|
{
|
|
return output.surfaceInterface != nullptr;
|
|
}
|
|
|
|
SceneOpenGLTexturePrivate *EglGbmBackend::createBackendTexture(SceneOpenGLTexture *texture)
|
|
{
|
|
return new EglGbmTexture(texture, this);
|
|
}
|
|
|
|
void EglGbmBackend::setViewport(const Output &output) const
|
|
{
|
|
const QSize &overall = screens()->size();
|
|
const QRect &v = output.output->geometry();
|
|
qreal scale = output.output->scale();
|
|
|
|
glViewport(-v.x() * scale, (v.height() - overall.height() + v.y()) * scale,
|
|
overall.width() * scale, overall.height() * scale);
|
|
}
|
|
|
|
QRegion EglGbmBackend::beginFrame(int screenId)
|
|
{
|
|
Output &output = m_outputs[screenId];
|
|
output.surfaceInterface = nullptr;
|
|
if (isPrimary()) {
|
|
return prepareRenderingForOutput(output);
|
|
} else {
|
|
return renderingBackend()->beginFrameForSecondaryGpu(output.output);
|
|
}
|
|
}
|
|
|
|
QRegion EglGbmBackend::prepareRenderingForOutput(Output &output) const
|
|
{
|
|
makeContextCurrent(output);
|
|
prepareRenderFramebuffer(output);
|
|
setViewport(output);
|
|
|
|
if (supportsBufferAge()) {
|
|
QRegion region;
|
|
|
|
// Note: An age of zero means the buffer contents are undefined
|
|
if (output.bufferAge > 0 && output.bufferAge <= output.damageHistory.count()) {
|
|
for (int i = 0; i < output.bufferAge - 1; i++)
|
|
region |= output.damageHistory[i];
|
|
} else {
|
|
region = output.output->geometry();
|
|
}
|
|
|
|
return region;
|
|
}
|
|
return output.output->geometry();
|
|
}
|
|
|
|
void EglGbmBackend::endFrame(int screenId, const QRegion &renderedRegion,
|
|
const QRegion &damagedRegion)
|
|
{
|
|
Q_UNUSED(renderedRegion)
|
|
|
|
Output &output = m_outputs[screenId];
|
|
DrmOutput *drmOutput = output.output;
|
|
|
|
renderFramebufferToSurface(output);
|
|
|
|
const QRegion dirty = damagedRegion.intersected(output.output->geometry());
|
|
if (!presentOnOutput(output, dirty)) {
|
|
output.damageHistory.clear();
|
|
RenderLoopPrivate *renderLoopPrivate = RenderLoopPrivate::get(drmOutput->renderLoop());
|
|
renderLoopPrivate->notifyFrameFailed();
|
|
return;
|
|
}
|
|
|
|
if (supportsBufferAge()) {
|
|
if (output.damageHistory.count() > 10) {
|
|
output.damageHistory.removeLast();
|
|
}
|
|
output.damageHistory.prepend(dirty);
|
|
}
|
|
}
|
|
|
|
bool EglGbmBackend::scanout(int screenId, SurfaceItem *surfaceItem)
|
|
{
|
|
SurfaceItemWayland *item = qobject_cast<SurfaceItemWayland *>(surfaceItem);
|
|
if (!item) {
|
|
return false;
|
|
}
|
|
|
|
KWaylandServer::SurfaceInterface *surface = item->surface();
|
|
if (!surface || !surface->buffer() || !surface->buffer()->linuxDmabufBuffer()) {
|
|
return false;
|
|
}
|
|
auto buffer = surface->buffer();
|
|
Output &output = m_outputs[screenId];
|
|
if (buffer->linuxDmabufBuffer()->size() != output.output->modeSize()) {
|
|
return false;
|
|
}
|
|
EglDmabufBuffer *dmabuf = static_cast<EglDmabufBuffer*>(buffer->linuxDmabufBuffer());
|
|
if (!dmabuf || !dmabuf->planes().count() ||
|
|
!gbm_device_is_format_supported(m_gpu->gbmDevice(), dmabuf->format(), GBM_BO_USE_SCANOUT)) {
|
|
return false;
|
|
}
|
|
gbm_bo *importedBuffer;
|
|
if (dmabuf->planes()[0].modifier != DRM_FORMAT_MOD_INVALID
|
|
|| dmabuf->planes()[0].offset > 0
|
|
|| dmabuf->planes().size() > 1) {
|
|
gbm_import_fd_modifier_data data = {};
|
|
data.format = dmabuf->format();
|
|
data.width = (uint32_t) dmabuf->size().width();
|
|
data.height = (uint32_t) dmabuf->size().height();
|
|
data.num_fds = dmabuf->planes().count();
|
|
data.modifier = dmabuf->planes()[0].modifier;
|
|
for (int i = 0; i < dmabuf->planes().count(); i++) {
|
|
auto plane = dmabuf->planes()[i];
|
|
data.fds[i] = plane.fd;
|
|
data.offsets[i] = plane.offset;
|
|
data.strides[i] = plane.stride;
|
|
}
|
|
importedBuffer = gbm_bo_import(m_gpu->gbmDevice(), GBM_BO_IMPORT_FD_MODIFIER, &data, GBM_BO_USE_SCANOUT);
|
|
} else {
|
|
auto plane = dmabuf->planes()[0];
|
|
gbm_import_fd_data data = {};
|
|
data.fd = plane.fd;
|
|
data.width = (uint32_t) dmabuf->size().width();
|
|
data.height = (uint32_t) dmabuf->size().height();
|
|
data.stride = plane.stride;
|
|
data.format = dmabuf->format();
|
|
importedBuffer = gbm_bo_import(m_gpu->gbmDevice(), GBM_BO_IMPORT_FD, &data, GBM_BO_USE_SCANOUT);
|
|
}
|
|
if (!importedBuffer) {
|
|
if (errno != EINVAL) {
|
|
qCWarning(KWIN_DRM) << "Importing buffer for direct scanout failed!" << strerror(errno);
|
|
}
|
|
return false;
|
|
}
|
|
// damage tracking for screen casting
|
|
QRegion damage;
|
|
if (output.surfaceInterface == surface && buffer->size() == output.output->modeSize()) {
|
|
QRegion trackedDamage = surfaceItem->damage();
|
|
surfaceItem->resetDamage();
|
|
for (const auto &rect : trackedDamage) {
|
|
auto damageRect = QRect(rect);
|
|
damageRect.translate(output.output->geometry().topLeft());
|
|
damage |= damageRect;
|
|
}
|
|
} else {
|
|
damage = output.output->geometry();
|
|
}
|
|
output.buffer = QSharedPointer<DrmGbmBuffer>::create(m_gpu, importedBuffer, buffer);
|
|
output.surfaceInterface = surface;
|
|
return presentOnOutput(output, damage);
|
|
}
|
|
|
|
QSharedPointer<GLTexture> EglGbmBackend::textureForOutput(AbstractOutput *abstractOutput) const
|
|
{
|
|
const QVector<KWin::EglGbmBackend::Output>::const_iterator itOutput = std::find_if(m_outputs.begin(), m_outputs.end(),
|
|
[abstractOutput] (const auto &output) {
|
|
return output.output == abstractOutput;
|
|
}
|
|
);
|
|
if (itOutput == m_outputs.end()) {
|
|
return {};
|
|
}
|
|
|
|
DrmOutput *drmOutput = itOutput->output;
|
|
if (!drmOutput->hardwareTransforms()) {
|
|
const auto glTexture = QSharedPointer<KWin::GLTexture>::create(itOutput->render.texture, GL_RGBA8, drmOutput->pixelSize());
|
|
glTexture->setYInverted(true);
|
|
return glTexture;
|
|
}
|
|
|
|
EGLImageKHR image = eglCreateImageKHR(eglDisplay(), nullptr, EGL_NATIVE_PIXMAP_KHR, itOutput->buffer->getBo(), nullptr);
|
|
if (image == EGL_NO_IMAGE_KHR) {
|
|
qCWarning(KWIN_DRM) << "Failed to record frame: Error creating EGLImageKHR - " << glGetError();
|
|
return {};
|
|
}
|
|
|
|
return QSharedPointer<EGLImageTexture>::create(eglDisplay(), image, GL_RGBA8, drmOutput->modeSize());
|
|
}
|
|
|
|
bool EglGbmBackend::directScanoutAllowed(int screen) const
|
|
{
|
|
return !m_backend->usesSoftwareCursor() && !m_outputs[screen].output->directScanoutInhibited();
|
|
}
|
|
|
|
/************************************************
|
|
* EglTexture
|
|
************************************************/
|
|
|
|
EglGbmTexture::EglGbmTexture(KWin::SceneOpenGLTexture *texture, EglGbmBackend *backend)
|
|
: AbstractEglTexture(texture, backend)
|
|
{
|
|
}
|
|
|
|
EglGbmTexture::~EglGbmTexture() = default;
|
|
|
|
}
|