| /**************************************************************************** |
| ** |
| ** Copyright (C) 2008-2012 NVIDIA Corporation. |
| ** Copyright (C) 2019 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of Qt Quick 3D. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** 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. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QSSG_RENDER_INPUT_ASSEMBLER_H |
| #define QSSG_RENDER_INPUT_ASSEMBLER_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 <QtQuick3DRender/private/qtquick3drenderglobal_p.h> |
| #include <QtQuick3DRender/private/qssgrenderbasetypes_p.h> |
| #include <QtQuick3DRender/private/qssgrenderbackend_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| // forward declarations |
| class QSSGRenderContext; |
| class QSSGRenderBackend; |
| class QSSGRenderAttribLayout; |
| |
| ///< this class handles the vertex attribute layout setup |
| class Q_QUICK3DRENDER_EXPORT QSSGRenderInputAssembler |
| { |
| Q_DISABLE_COPY(QSSGRenderInputAssembler) |
| public: |
| QAtomicInt ref; |
| |
| /** |
| * @brief constructor |
| * |
| * NOTE: The limit for buffers count is currently 16 |
| * |
| * @param[in] context Pointer to context |
| * @param[in] attribLayout Pointer to QSSGRenderAttribLayout object |
| * @param[in] buffers list of vertex buffers |
| * @param[in] indexBuffer pointer to index buffer. Can be nullptr |
| * @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. |
| */ |
| QSSGRenderInputAssembler(const QSSGRef<QSSGRenderContext> &context, |
| const QSSGRef<QSSGRenderAttribLayout> &attribLayout, |
| QSSGDataView<QSSGRef<QSSGRenderVertexBuffer>> buffers, |
| const QSSGRef<QSSGRenderIndexBuffer> &indexBuffer, |
| QSSGDataView<quint32> strides, |
| QSSGDataView<quint32> offsets, |
| QSSGRenderDrawMode primType = QSSGRenderDrawMode::Triangles, |
| quint32 patchVertexCount = 1); |
| ~QSSGRenderInputAssembler(); |
| |
| /** |
| * @brief get the backend object handle |
| * |
| * @return the backend object handle. |
| */ |
| QSSGRenderBackend::QSSGRenderBackendInputAssemblerObject handle() const |
| { |
| return m_handle; |
| } |
| |
| /** |
| * @brief get the attached index buffer |
| * |
| * @return the index buffer |
| */ |
| const QSSGRef<QSSGRenderIndexBuffer> &indexBuffer(); |
| |
| /** |
| * @brief get the index count of the attached index buffer (if any) |
| * |
| * @return the index buffer count |
| */ |
| quint32 indexCount() 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 |
| */ |
| quint32 vertexCount() const; |
| |
| /** |
| * @brief get the primitive type used for drawing |
| * |
| * @return primitive type |
| */ |
| QSSGRenderDrawMode drawMode() const { return m_drawMode; } |
| |
| /** |
| * @brief set the per vertex patch count |
| * |
| * @return none |
| */ |
| void setPatchVertexCount(quint32 count) |
| { |
| if (count != m_patchVertexCount) { |
| // clamp to 1; |
| m_patchVertexCount = (count == 0) ? 1 : count; |
| ; |
| m_backend->setPatchVertexCount(m_handle, m_patchVertexCount); |
| } |
| } |
| |
| private: |
| QSSGRef<QSSGRenderContext> m_context; ///< pointer to context |
| QSSGRef<QSSGRenderBackend> m_backend; ///< pointer to backend |
| |
| QSSGRef<QSSGRenderAttribLayout> m_attribLayout; ///< pointer to attribute layout |
| QVector<QSSGRef<QSSGRenderVertexBuffer>> m_vertexBuffers; ///< vertex buffers |
| QSSGRef<QSSGRenderIndexBuffer> m_indexBuffer; ///< index buffer |
| QSSGDataView<QSSGRenderBackend::QSSGRenderBackendBufferObject> m_vertexbufferHandles; ///< opaque vertex buffer backend handles |
| |
| QSSGRenderBackend::QSSGRenderBackendInputAssemblerObject m_handle; ///< opaque backend handle |
| QSSGRenderDrawMode m_drawMode; ///< primitive type used for drawing |
| quint32 m_patchVertexCount; ///< vertex count if primitive type is patch |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif |