<commit_before>/*
  -----------------------------------------------------------------------------
  This source file is part of OGRE
  (Object-oriented Graphics Rendering Engine)
  For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2014 <NAME> Ltd

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
  -----------------------------------------------------------------------------
*/

#ifndef __GL3PlusHardwareBufferManager_H__
#define __GL3PlusHardwareBufferManager_H__

#include "OgreGL3PlusPrerequisites.h"
#include "OgreHardwareBufferManager.h"

namespace Ogre {
    // Default threshold at which glMapBuffer becomes more efficient than glBufferSubData (32k?)
    //TODO Double check that this still holds.
#       define OGRE_GL_DEFAULT_MAP_BUFFER_THRESHOLD (1024 * 32)

    /** Implementation of HardwareBufferManager for OpenGL. */
    class _OgreGL3PlusExport GL3PlusHardwareBufferManagerBase : public HardwareBufferManagerBase
    {
    protected:
        char* mScratchBufferPool;
        OGRE_MUTEX(mScratchMutex);
        size_t mMapBufferThreshold;

        UniformBufferList mShaderStorageBuffers;

    public:
        GL3PlusHardwareBufferManagerBase();
        ~GL3PlusHardwareBufferManagerBase();
        /// Creates a vertex buffer
        HardwareVertexBufferSharedPtr createVertexBuffer(size_t vertexSize,
                                                         size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer = false);
        /// Create a hardware vertex buffer
        HardwareIndexBufferSharedPtr createIndexBuffer(
            HardwareIndexBuffer::IndexType itype, size_t numIndexes,
            HardwareBuffer::Usage usage, bool useShadowBuffer = false);
        /// Create a uniform buffer
        HardwareUniformBufferSharedPtr createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                           bool useShadowBuffer, const String& name = "");
        /// Create a uniform buffer
        HardwareUniformBufferSharedPtr createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                           bool useShadowBuffer, size_t binding, const String& name = "");

        /// Create a shader storage buffer.
        HardwareUniformBufferSharedPtr createShaderStorageBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                                 bool useShadowBuffer, const String& name = "");
        /// Create a shader storage buffer.
        HardwareUniformBufferSharedPtr createShaderStorageBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                                 bool useShadowBuffer, size_t binding, const String& name = "");
        /// Create a counter buffer
        HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                           bool useShadowBuffer, const String& name = "");
        /// Create a counter buffer
        HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                           bool useShadowBuffer, size_t binding, const String& name = "");
        /// Create a render to vertex buffer
        RenderToVertexBufferSharedPtr createRenderToVertexBuffer();

        /// Utility function to get the correct GL usage based on HBU's
        static GLenum getGLUsage(unsigned int usage);

        /// Utility function to get the correct GL type based on VET's
        static GLenum getGLType(unsigned int type);<commit_msg>remove declarations of unimplemented functions<commit_after>/*
  -----------------------------------------------------------------------------
  This source file is part of OGRE
  (Object-oriented Graphics Rendering Engine)
  For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2014 <NAME>

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
  -----------------------------------------------------------------------------
*/

#ifndef __GL3PlusHardwareBufferManager_H__
#define __GL3PlusHardwareBufferManager_H__

#include "OgreGL3PlusPrerequisites.h"
#include "OgreHardwareBufferManager.h"

namespace Ogre {
    // Default threshold at which glMapBuffer becomes more efficient than glBufferSubData (32k?)
    //TODO Double check that this still holds.
#       define OGRE_GL_DEFAULT_MAP_BUFFER_THRESHOLD (1024 * 32)

    /** Implementation of HardwareBufferManager for OpenGL. */
    class _OgreGL3PlusExport GL3PlusHardwareBufferManagerBase : public HardwareBufferManagerBase
    {
    protected:
        char* mScratchBufferPool;
        OGRE_MUTEX(mScratchMutex);
        size_t mMapBufferThreshold;

        UniformBufferList mShaderStorageBuffers;

    public:
        GL3PlusHardwareBufferManagerBase();
        ~GL3PlusHardwareBufferManagerBase();
        /// Creates a vertex buffer
        HardwareVertexBufferSharedPtr createVertexBuffer(size_t vertexSize,
                                                         size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer = false);
        /// Create a hardware vertex buffer
        HardwareIndexBufferSharedPtr createIndexBuffer(
            HardwareIndexBuffer::IndexType itype, size_t numIndexes,
            HardwareBuffer::Usage usage, bool useShadowBuffer = false);
        /// Create a uniform buffer
        HardwareUniformBufferSharedPtr createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                           bool useShadowBuffer, const String& name = "");

        /// Create a shader storage buffer.
        HardwareUniformBufferSharedPtr createShaderStorageBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                                 bool useShadowBuffer, const String& name = "");
        /// Create a counter buffer
        HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,
                                                           bool useShadowBuffer, const String& name = "");
        /// Create a render to vertex buffer
        RenderToVertexBufferSharedPtr createRenderToVertexBuffer();

        /// Utility function to get the correct GL usage based on HBU's
        static GLenum getGLUsage(unsigned int usage);

        /// Utility function to get the correct GL type based on VET's
        static GLenum getGLType(unsigned int type);
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