1 files changed, 105 insertions, 0 deletions
diff --git a/src/Runtime/Source/render/Qt3DSRenderInputAssembler.cpp b/src/Runtime/Source/render/Qt3DSRenderInputAssembler.cpp
new file mode 100644
index 00000000..e4d38b9d
--- /dev/null
+++ b/src/Runtime/Source/render/Qt3DSRenderInputAssembler.cpp
@@ -0,0 +1,105 @@
+/****************************************************************************
+**
+** 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 "render/Qt3DSRenderInputAssembler.h"
+#include "render/Qt3DSRenderAttribLayout.h"
+#include "render/Qt3DSRenderContext.h"
+
+namespace qt3ds {
+namespace render {
+
+    ///< constructor
+    NVRenderInputAssembler::NVRenderInputAssembler(
+        NVRenderContextImpl &context, NVRenderAttribLayout *attribLayout,
+        NVConstDataRef<NVRenderVertexBuffer *> buffers, const NVRenderIndexBuffer *indexBuffer,
+        NVConstDataRef<QT3DSU32> strides, NVConstDataRef<QT3DSU32> offsets,
+        NVRenderDrawMode::Enum primType, QT3DSU32 patchVertexCount)
+        : m_Context(context)
+        , m_Foundation(context.GetFoundation())
+        , mRefCount(0)
+        , m_Backend(context.GetBackend())
+        , m_AttribLayout(attribLayout)
+        , m_VertexBuffers(context.GetAllocator(), "m_VertexBuffers")
+        , m_IndexBuffer(indexBuffer)
+        , m_PrimitiveType(primType)
+        , m_PatchVertexCount(patchVertexCount)
+    {
+        // we cannot currently attach more than 16  vertex buffers
+        QT3DS_ASSERT(buffers.size() < 16);
+        // if primitive is "Patch" we need a patch per vertex count > 0
+        QT3DS_ASSERT(m_PrimitiveType != NVRenderDrawMode::Patches || m_PatchVertexCount > 1);
+
+        QT3DSU32 entrySize = sizeof(NVRenderBackend::NVRenderBackendBufferObject) * buffers.size();
+        NVRenderBackend::NVRenderBackendBufferObject *bufferHandle =
+            (NVRenderBackend::NVRenderBackendBufferObject *)QT3DS_ALLOC(
+                m_Foundation.getAllocator(), entrySize, "NVRenderInputAssembler");
+        // setup vertex buffer backend handle array
+        QT3DS_FOREACH(idx, buffers.size())
+        {
+            m_VertexBuffers.push_back(buffers.mData[idx]);
+            bufferHandle[idx] = buffers.mData[idx]->GetBuffertHandle();
+        };
+
+        m_VertexbufferHandles = toConstDataRef(bufferHandle, buffers.size());
+
+        m_InputAssemblertHandle = m_Backend->CreateInputAssembler(
+            m_AttribLayout->GetAttribLayoutHandle(), m_VertexbufferHandles,
+            (m_IndexBuffer) ? m_IndexBuffer->GetBuffertHandle() : NULL, strides, offsets,
+            patchVertexCount);
+
+        attribLayout->addRef();
+    }
+
+    ///< destructor
+    NVRenderInputAssembler::~NVRenderInputAssembler()
+    {
+        m_AttribLayout->release();
+
+        if (m_InputAssemblertHandle) {
+            m_Backend->ReleaseInputAssembler(m_InputAssemblertHandle);
+        }
+
+        QT3DS_FREE(m_Foundation.getAllocator(), (void *)m_VertexbufferHandles.mData);
+    }
+
+    QT3DSU32 NVRenderInputAssembler::GetIndexCount() const
+    {
+        return (m_IndexBuffer) ? m_IndexBuffer->GetNumIndices() : 0;
+    }
+
+    QT3DSU32 NVRenderInputAssembler::GetVertexCount() const
+    {
+        // makes only sense if we have a single vertex buffer
+        QT3DS_ASSERT(m_VertexBuffers.size() == 1);
+
+        return m_VertexBuffers[0]->GetNumVertexes();
+    }
+}
+}