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95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/*
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SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
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*/
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#include "drmclientbuffer.h"
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#include "clientbuffer_p.h"
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#include "display.h"
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#include <EGL/egl.h>
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#include <QtGui/qopengl.h>
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#ifndef EGL_WL_bind_wayland_display
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#define EGL_WAYLAND_Y_INVERTED_WL 0x31DB
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#endif
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namespace KWaylandServer
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{
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typedef GLboolean (*eglQueryWaylandBufferWL_func)(EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
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static eglQueryWaylandBufferWL_func eglQueryWaylandBufferWL = nullptr;
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class DrmClientBufferPrivate : public ClientBufferPrivate
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{
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public:
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int textureFormat = 0;
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int width = 0;
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int height = 0;
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int yInverted = 0;
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bool hasAlphaChannel = false;
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};
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DrmClientBuffer::DrmClientBuffer(wl_resource *resource, DrmClientBufferIntegration *integration)
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: ClientBuffer(resource, *new DrmClientBufferPrivate)
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{
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Q_D(DrmClientBuffer);
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EGLDisplay eglDisplay = integration->display()->eglDisplay();
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eglQueryWaylandBufferWL(eglDisplay, resource, EGL_TEXTURE_FORMAT, &d->textureFormat);
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eglQueryWaylandBufferWL(eglDisplay, resource, EGL_WIDTH, &d->width);
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eglQueryWaylandBufferWL(eglDisplay, resource, EGL_HEIGHT, &d->height);
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bool ok = eglQueryWaylandBufferWL(eglDisplay, resource, EGL_WAYLAND_Y_INVERTED_WL, &d->yInverted);
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if (!ok) {
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// If EGL_WAYLAND_Y_INVERTED_WL is unsupported, we must assume that the buffer is inverted.
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d->yInverted = true;
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}
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}
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int DrmClientBuffer::textureFormat() const
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{
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Q_D(const DrmClientBuffer);
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return d->textureFormat;
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}
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QSize DrmClientBuffer::size() const
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{
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Q_D(const DrmClientBuffer);
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return QSize(d->width, d->height);
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}
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bool DrmClientBuffer::hasAlphaChannel() const
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{
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Q_D(const DrmClientBuffer);
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return d->textureFormat == EGL_TEXTURE_RGBA;
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}
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ClientBuffer::Origin DrmClientBuffer::origin() const
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{
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Q_D(const DrmClientBuffer);
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return d->yInverted ? Origin::TopLeft : Origin::BottomLeft;
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}
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DrmClientBufferIntegration::DrmClientBufferIntegration(Display *display)
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: ClientBufferIntegration(display)
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{
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}
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ClientBuffer *DrmClientBufferIntegration::createBuffer(::wl_resource *resource)
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{
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EGLDisplay eglDisplay = display()->eglDisplay();
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static bool resolved = false;
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if (!resolved && eglDisplay != EGL_NO_DISPLAY) {
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eglQueryWaylandBufferWL = (eglQueryWaylandBufferWL_func)eglGetProcAddress("eglQueryWaylandBufferWL");
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resolved = true;
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}
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EGLint height;
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if (eglQueryWaylandBufferWL(eglDisplay, resource, EGL_HEIGHT, &height)) {
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return new DrmClientBuffer(resource, this);
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}
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return nullptr;
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}
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} // namespace KWaylandServer
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