Introduce the Qt graphics abstraction as private QtGui helpers

Comes with backends for Vulkan, Metal, Direct3D 11.1, and OpenGL (ES).

All APIs are private for now.

Shader conditioning (i.e. generating a QRhiShader in memory or on disk
from some shader source code) is done via the tools and APIs provided
by qt-labs/qtshadertools.

The OpenGL support follows the cross-platform tradition of requiring
ES 2.0 only, while optionally using some (ES) 3.x features. It can
operate in core profile contexts as well.

Task-number: QTBUG-70287
Change-Id: I246f2e36d562e404012c05db2aa72487108aa7cc
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
 
 
 
 
 

1 files changed, 121 insertions, 0 deletions

diff --git a/src/gui/rhi/qrhiprofiler_p_p.h b/src/gui/rhi/qrhiprofiler_p_p.h
new file mode 100644
index 0000000000..49c6bd78ed
--- /dev/null
+++ b/src/gui/rhi/qrhiprofiler_p_p.h
@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Gui module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QRHIPROFILER_P_H
+#define QRHIPROFILER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qrhiprofiler_p.h"
+#include <QElapsedTimer>
+#include <QHash>
+
+QT_BEGIN_NAMESPACE
+
+class QRhiProfilerPrivate
+{
+public:
+    static QRhiProfilerPrivate *get(QRhiProfiler *p) { return p->d; }
+
+    void newBuffer(QRhiBuffer *buf, quint32 realSize, int backingGpuBufCount, int backingCpuBufCount);
+    void releaseBuffer(QRhiBuffer *buf);
+    void newBufferStagingArea(QRhiBuffer *buf, int slot, quint32 size);
+    void releaseBufferStagingArea(QRhiBuffer *buf, int slot);
+
+    void newRenderBuffer(QRhiRenderBuffer *rb, bool transientBacking, bool winSysBacking, int sampleCount);
+    void releaseRenderBuffer(QRhiRenderBuffer *rb);
+
+    void newTexture(QRhiTexture *tex, bool owns, int mipCount, int layerCount, int sampleCount);
+    void releaseTexture(QRhiTexture *tex);
+    void newTextureStagingArea(QRhiTexture *tex, int slot, quint32 size);
+    void releaseTextureStagingArea(QRhiTexture *tex, int slot);
+
+    void resizeSwapChain(QRhiSwapChain *sc, int bufferCount, int msaaBufferCount, int sampleCount);
+    void releaseSwapChain(QRhiSwapChain *sc);
+
+    void beginSwapChainFrame(QRhiSwapChain *sc);
+    void endSwapChainFrame(QRhiSwapChain *sc, int frameCount);
+    void swapChainFrameGpuTime(QRhiSwapChain *sc, float gpuTimeMs);
+
+    void newReadbackBuffer(quint64 id, QRhiResource *src, quint32 size);
+    void releaseReadbackBuffer(quint64 id);
+
+    void vmemStat(int realAllocCount, int subAllocCount, quint32 totalSize, quint32 unusedSize);
+
+    void startEntry(QRhiProfiler::StreamOp op, qint64 timestamp, QRhiResource *res);
+    void writeInt(const char *key, qint64 v);
+    void writeFloat(const char *key, float f);
+    void endEntry();
+
+    QRhiImplementation *rhiDWhenEnabled = nullptr;
+    QIODevice *outputDevice = nullptr;
+    QElapsedTimer ts;
+    QByteArray buf;
+    static const int DEFAULT_FRAME_TIMING_WRITE_INTERVAL = 120; // frames
+    int frameTimingWriteInterval = DEFAULT_FRAME_TIMING_WRITE_INTERVAL;
+    struct Sc {
+        Sc() {
+            frameToFrameSamples.reserve(DEFAULT_FRAME_TIMING_WRITE_INTERVAL);
+            beginToEndSamples.reserve(DEFAULT_FRAME_TIMING_WRITE_INTERVAL);
+            gpuFrameSamples.reserve(DEFAULT_FRAME_TIMING_WRITE_INTERVAL);
+        }
+        QElapsedTimer frameToFrameTimer;
+        bool frameToFrameRunning = false;
+        QElapsedTimer beginToEndTimer;
+        QVector<qint64> frameToFrameSamples;
+        QVector<qint64> beginToEndSamples;
+        QVector<float> gpuFrameSamples;
+        QRhiProfiler::CpuTime frameToFrameTime;
+        QRhiProfiler::CpuTime beginToEndFrameTime;
+        QRhiProfiler::GpuTime gpuFrameTime;
+    };
+    QHash<QRhiSwapChain *, Sc> swapchains;
+};
+
+Q_DECLARE_TYPEINFO(QRhiProfilerPrivate::Sc, Q_MOVABLE_TYPE);
+
+QT_END_NAMESPACE
+
+#endif