1 files changed, 114 insertions, 0 deletions
diff --git a/src/render/Qt3DSRenderRenderBuffer.cpp b/src/render/Qt3DSRenderRenderBuffer.cpp
new file mode 100644
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+++ b/src/render/Qt3DSRenderRenderBuffer.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2008-2012 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "foundation/Qt3DSAllocator.h"
+#include "foundation/Qt3DSFoundation.h"
+#include "foundation/Qt3DSBroadcastingAllocator.h"
+#include "foundation/Qt3DSAtomic.h"
+#include "render/Qt3DSRenderRenderBuffer.h"
+#include "render/Qt3DSRenderBaseTypes.h"
+#include "render/Qt3DSRenderContext.h"
+#include "foundation/Qt3DSFoundation.h"
+
+namespace qt3ds {
+namespace render {
+
+    NVRenderRenderBuffer::NVRenderRenderBuffer(NVRenderContextImpl &context, NVFoundationBase &fnd,
+                                               NVRenderRenderBufferFormats::Enum format,
+                                               QT3DSU32 width, QT3DSU32 height)
+        : m_Context(context)
+        , m_Foundation(fnd)
+        , mRefCount(0)
+        , m_Backend(context.GetBackend())
+        , m_Width(width)
+        , m_Height(height)
+        , m_StorageFormat(format)
+        , m_BufferHandle(NULL)
+    {
+        SetDimensions(NVRenderRenderBufferDimensions(width, height));
+    }
+
+    NVRenderRenderBuffer::~NVRenderRenderBuffer()
+    {
+        m_Context.RenderBufferDestroyed(*this);
+        m_Backend->ReleaseRenderbuffer(m_BufferHandle);
+        m_BufferHandle = 0;
+    }
+
+    void NVRenderRenderBuffer::SetDimensions(const NVRenderRenderBufferDimensions &inDimensions)
+    {
+        QT3DSU32 maxWidth, maxHeight;
+        m_Width = inDimensions.m_Width;
+        m_Height = inDimensions.m_Height;
+
+        // get max size and clamp to max value
+        m_Context.getMaxTextureSize(maxWidth, maxHeight);
+        if (m_Width > maxWidth || m_Height > maxHeight) {
+            qCCritical(INVALID_OPERATION, "Width or height is greater than max texture size (%d, %d)",
+                maxWidth, maxHeight);
+            m_Width = NVMin(m_Width, maxWidth);
+            m_Height = NVMin(m_Height, maxHeight);
+        }
+
+        bool success = true;
+
+        if (m_BufferHandle == NULL)
+            m_BufferHandle = m_Backend->CreateRenderbuffer(m_StorageFormat, m_Width, m_Height);
+        else
+            success =
+                m_Backend->ResizeRenderbuffer(m_BufferHandle, m_StorageFormat, m_Width, m_Height);
+
+        if (m_BufferHandle == NULL || !success) {
+            // We could try smaller sizes
+            QT3DS_ASSERT(false);
+            qCCritical(INTERNAL_ERROR, "Unable to create render buffer %s, %dx%d",
+                               NVRenderRenderBufferFormats::toString(m_StorageFormat), m_Width,
+                               m_Height);
+        }
+    }
+}
+}
+
+qt3ds::render::NVRenderRenderBuffer *
+qt3ds::render::NVRenderRenderBuffer::Create(NVRenderContextImpl &context,
+                                         NVRenderRenderBufferFormats::Enum format, QT3DSU32 width,
+                                         QT3DSU32 height)
+{
+    NVRenderRenderBuffer *retval = NULL;
+    if (width == 0 || height == 0) {
+        qCCritical(INVALID_PARAMETER, "Invalid renderbuffer width or height");
+        return retval;
+    }
+
+    retval = QT3DS_NEW(context.GetFoundation().getAllocator(),
+                    NVRenderRenderBuffer)(context, context.GetFoundation(), format, width, height);
+
+    return retval;
+}