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Diffstat (limited to 'src/render/Qt3DSRenderFrameBuffer.h')
| -rw-r--r-- | src/render/Qt3DSRenderFrameBuffer.h | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/src/render/Qt3DSRenderFrameBuffer.h b/src/render/Qt3DSRenderFrameBuffer.h new file mode 100644 index 0000000..1882a27 --- /dev/null +++ b/src/render/Qt3DSRenderFrameBuffer.h @@ -0,0 +1,277 @@ +/**************************************************************************** +** +** 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_QT3DS_RENDER_FRAME_BUFFER_H +#define QT3DS_RENDER_QT3DS_RENDER_FRAME_BUFFER_H +#include "foundation/Qt3DSRefCounted.h" +#include "foundation/Qt3DSAssert.h" +#include "foundation/Qt3DSAtomic.h" +#include "render/Qt3DSRenderBaseTypes.h" +#include "render/backends/Qt3DSRenderBackend.h" + +namespace qt3ds { +namespace render { + + class NVRenderContextImpl; + class NVRenderTexture2D; + class NVRenderRenderBuffer; + class NVRenderTexture2DArray; + class NVRenderTextureCube; + + class NVRenderTextureOrRenderBuffer + { + NVRenderTexture2D *m_Texture2D; + NVRenderTexture2DArray *m_Texture2DArray; + NVRenderTextureCube *m_TextureCube; + NVRenderRenderBuffer *m_RenderBuffer; + + public: + NVRenderTextureOrRenderBuffer(NVRenderTexture2D &texture) + : m_Texture2D(&texture) + , m_Texture2DArray(NULL) + , m_TextureCube(NULL) + , m_RenderBuffer(NULL) + { + } + NVRenderTextureOrRenderBuffer(NVRenderRenderBuffer &render) + : m_Texture2D(NULL) + , m_Texture2DArray(NULL) + , m_TextureCube(NULL) + , m_RenderBuffer(&render) + { + } + NVRenderTextureOrRenderBuffer(NVRenderTexture2DArray &textureArray) + : m_Texture2D(NULL) + , m_Texture2DArray(&textureArray) + , m_TextureCube(NULL) + , m_RenderBuffer(NULL) + { + } + NVRenderTextureOrRenderBuffer(NVRenderTextureCube &textureCube) + : m_Texture2D(NULL) + , m_Texture2DArray(NULL) + , m_TextureCube(&textureCube) + , m_RenderBuffer(NULL) + { + } + NVRenderTextureOrRenderBuffer() + : m_Texture2D(NULL) + , m_Texture2DArray(NULL) + , m_TextureCube(NULL) + , m_RenderBuffer(NULL) + { + } + NVRenderTextureOrRenderBuffer(const NVRenderTextureOrRenderBuffer &other) + : m_Texture2D(other.m_Texture2D) + , m_Texture2DArray(other.m_Texture2DArray) + , m_TextureCube(other.m_TextureCube) + , m_RenderBuffer(other.m_RenderBuffer) + { + } + NVRenderTextureOrRenderBuffer &operator=(const NVRenderTextureOrRenderBuffer &other) + { + if (this != &other) { + m_Texture2D = const_cast<NVRenderTexture2D *>(other.m_Texture2D); + m_Texture2DArray = const_cast<NVRenderTexture2DArray *>(other.m_Texture2DArray); + m_RenderBuffer = const_cast<NVRenderRenderBuffer *>(other.m_RenderBuffer); + m_TextureCube = const_cast<NVRenderTextureCube *>(other.m_TextureCube); + } + return *this; + } + + bool HasTexture2D() const { return m_Texture2D != NULL; } + bool HasTexture2DArray() const { return m_Texture2DArray != NULL; } + bool HasTextureCube() const { return m_TextureCube != NULL; } + bool HasRenderBuffer() const { return m_RenderBuffer != NULL; } + + NVRenderTexture2D *GetTexture2D() const + { + QT3DS_ASSERT(HasTexture2D()); + return m_Texture2D; + } + NVRenderTexture2DArray *GetTexture2DArray() const + { + QT3DS_ASSERT(HasTexture2DArray()); + return m_Texture2DArray; + } + NVRenderTextureCube *GetTextureCube() const + { + QT3DS_ASSERT(HasTextureCube()); + return m_TextureCube; + } + NVRenderRenderBuffer *GetRenderBuffer() const + { + QT3DS_ASSERT(HasRenderBuffer()); + return m_RenderBuffer; + } + }; + + class NVRenderFrameBuffer : public NVRefCounted, public NVRenderImplemented + { + 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 + + NVRenderTextureOrRenderBuffer + m_Attachments[NVRenderFrameBufferAttachments::LastAttachment]; ///< attachments array + NVRenderBackend::NVRenderBackendRenderTargetObject + m_BufferHandle; ///< opaque backend handle + + public: + /** + * @brief constructor + * + * @param[in] context Pointer to context + * @param[in] fnd Pointer to foundation + * + * @return No return. + */ + NVRenderFrameBuffer(NVRenderContextImpl &context, NVFoundationBase &fnd); + + /// destructor + virtual ~NVRenderFrameBuffer(); + + // define refcount functions + QT3DS_IMPLEMENT_REF_COUNT_ADDREF_RELEASE_OVERRIDE(m_Foundation) + + /** + * @brief query attachment + * + * + * @return buffer format + */ + virtual NVRenderTextureOrRenderBuffer + GetAttachment(NVRenderFrameBufferAttachments::Enum attachment); + + /** + * @brief Attach a render or texture buffer to a render target + * For texture attachments we use always level 0 + * + * @param[in] attachment Attachment point (e.g. COLOR0, DEPTH...) + * @param[in] buffer Contains a pointer to the attachment + * @param[in] target Attachment texture target + * + * @return no return + */ + virtual void + Attach(NVRenderFrameBufferAttachments::Enum attachment, + NVRenderTextureOrRenderBuffer buffer, + NVRenderTextureTargetType::Enum target = NVRenderTextureTargetType::Texture2D); + + /** + * @brief Attach a particular layer of the texture 2D array to a render target + * + * @param[in] attachment Attachment point (e.g. COLOR0, DEPTH...) + * @param[in] buffer Pointer to the Texture Array which contains the + * layers + * @param[in] layer The index to the layer that will be attached to the + * target + * @param[in] level Mip level of the texture that will be attached + * (default 0) + * + * @return no return + */ + virtual void AttachLayer(NVRenderFrameBufferAttachments::Enum attachment, + NVRenderTextureOrRenderBuffer buffer, QT3DSI32 layer, + QT3DSI32 level = 0); + + /** + * @brief Attach a particular face of the texture cubemap to a render target + * + * @param[in] attachment Attachment point (e.g. COLOR0, DEPTH...) + * @param[in] buffer Pointer to the Texture Array which contains the + * layers + * @param[in] face The face of the cubemap that will be attached to the + * target + * @param[in] level Mip level of the texture that will be attached + * (default 0) + * + * @return no return + */ + virtual void AttachFace(NVRenderFrameBufferAttachments::Enum attachment, + NVRenderTextureOrRenderBuffer buffer, + NVRenderTextureCubeFaces::Enum face); + + /** + * @brief Check that this framebuffer is complete and can be rendered to. + * + * + * @return true if complete + */ + virtual bool IsComplete(); + + /** + * @brief query if framebuffer has any attachment + * + * @return true if any attachment + */ + virtual bool HasAnyAttachment() { return (m_AttachmentBits != 0); } + + /** + * @brief get the backend object handle + * + * @return the backend object handle. + */ + virtual NVRenderBackend::NVRenderBackendRenderTargetObject GetFrameBuffertHandle() + { + return m_BufferHandle; + } + + // this will be obsolete + const void *GetImplementationHandle() const override + { + return reinterpret_cast<const void *>(m_BufferHandle); + } + + /** + * @brief static creator function + * + * @param[in] context Pointer to context + * + * @return a pointer to framebuffer object. + */ + static NVRenderFrameBuffer *Create(NVRenderContextImpl &context); + + private: + /** + * @brief releaes an attached object + * + * @return which target we released + */ + NVRenderTextureTargetType::Enum releaseAttachment(NVRenderFrameBufferAttachments::Enum idx); + + QT3DSU32 m_AttachmentBits; ///< holds flags for current attached buffers + }; +} +} + +#endif |