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Diffstat (limited to 'src/Runtime/Source/render/Qt3DSRenderInputAssembler.h')
| -rw-r--r-- | src/Runtime/Source/render/Qt3DSRenderInputAssembler.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/Runtime/Source/render/Qt3DSRenderInputAssembler.h b/src/Runtime/Source/render/Qt3DSRenderInputAssembler.h new file mode 100644 index 00000000..adac4c42 --- /dev/null +++ b/src/Runtime/Source/render/Qt3DSRenderInputAssembler.h @@ -0,0 +1,157 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#pragma once +#ifndef QT3DS_RENDER_INPUT_ASSEMBLER_H +#define QT3DS_RENDER_INPUT_ASSEMBLER_H + +#include "foundation/Qt3DSRefCounted.h" +#include "foundation/Qt3DSFoundation.h" +#include "foundation/Qt3DSAtomic.h" +#include "foundation/Utils.h" +#include "render/Qt3DSRenderBaseTypes.h" +#include "render/backends/Qt3DSRenderBackend.h" + +namespace qt3ds { +namespace render { + + // forward declarations + class NVRenderContextImpl; + class NVRenderBackend; + class NVRenderAttribLayout; + + ///< this class handles the vertex attribute layout setup + class NVRenderInputAssembler : public NVRefCounted + { + public: + /** + * @brief constructor + * + * NOTE: The limit for buffers count is currently 16 + * + * @param[in] context Pointer to context + * @param[in] attribLayout Pointer to NVRenderAttribLayout object + * @param[in] buffers list of vertex buffers + * @param[in] indexBuffer pointer to index buffer. Can be NULL + * @param[in] strides list of strides of the buffer + * @param[in] offsets list of offsets into the buffer + * @param[in] primType primitive type used for drawing + * @param[in] patchVertexCount if primitive is "Patch" this is the vertex count for a + *single patch + * + * @return No return. + */ + NVRenderInputAssembler(NVRenderContextImpl &context, NVRenderAttribLayout *attribLayout, + NVConstDataRef<NVRenderVertexBuffer *> buffers, + const NVRenderIndexBuffer *indexBuffer, + NVConstDataRef<QT3DSU32> strides, NVConstDataRef<QT3DSU32> offsets, + NVRenderDrawMode::Enum primType = NVRenderDrawMode::Triangles, + QT3DSU32 patchVertexCount = 1); + ///< destructor + ~NVRenderInputAssembler(); + + // define refcount functions + QT3DS_IMPLEMENT_REF_COUNT_ADDREF_RELEASE(m_Foundation) + + /** + * @brief get the backend object handle + * + * @return the backend object handle. + */ + NVRenderBackend::NVRenderBackendInputAssemblerObject GetInputAssemblerHandle() const + { + return m_InputAssemblertHandle; + } + + /** + * @brief get the attached index buffer + * + * @return the index buffer + */ + const NVRenderIndexBuffer *GetIndexBuffer() { return m_IndexBuffer; } + + /** + * @brief get the index count of the attached index buffer (if any) + * + * @return the index buffer count + */ + QT3DSU32 GetIndexCount() const; + + /** + * @brief get the vertex count of the buffer + * Note this makes only sense if we have a single + * interleaved buffer + * + * @return the vertex buffer count + */ + QT3DSU32 GetVertexCount() const; + + /** + * @brief get the primitive type used for drawing + * + * @return primitive type + */ + NVRenderDrawMode::Enum GetPrimitiveType() const { return m_PrimitiveType; } + + /** + * @brief set the per vertex patch count + * + * @return none + */ + void SetPatchVertexCount(QT3DSU32 count) + { + if (count != m_PatchVertexCount) { + // clamp to 1; + m_PatchVertexCount = (count == 0) ? 1 : count; + ; + m_Backend->SetPatchVertexCount(m_InputAssemblertHandle, m_PatchVertexCount); + } + } + + private: + NVRenderContextImpl &m_Context; ///< pointer to context + NVFoundationBase &m_Foundation; ///< pointer to foundation + volatile QT3DSI32 mRefCount; ///< Using foundations' naming convention to ease implementation + NVRenderBackend *m_Backend; ///< pointer to backend + + NVRenderAttribLayout *m_AttribLayout; ///< pointer to attribute layout + nvvector<NVRenderVertexBuffer *> m_VertexBuffers; ///< vertex buffers + const NVRenderIndexBuffer *m_IndexBuffer; ///< index buffer + NVConstDataRef<NVRenderBackend::NVRenderBackendBufferObject> + m_VertexbufferHandles; ///< opaque vertex buffer backend handles + + NVRenderBackend::NVRenderBackendInputAssemblerObject + m_InputAssemblertHandle; ///< opaque backend handle + NVRenderDrawMode::Enum m_PrimitiveType; ///< primitive type used for drawing + QT3DSU32 m_PatchVertexCount; ///< vertex count if primitive type is patch + }; +} +} + +#endif |