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/*
   Copyright (c) 2016 DIVIDE-Studio
   Copyright (c) 2009 Ionut Cava

   This file is part of DIVIDE Framework.

   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 GL_UNIFORM_BUFFER_OBJECT_H_
#define GL_UNIFORM_BUFFER_OBJECT_H_

#include "Platform/Video/OpenGL/Headers/glResources.h"
#include "Platform/Video/OpenGL/Buffers/Headers/glMemoryManager.h"
#include "Platform/Video/Buffers/ShaderBuffer/Headers/ShaderBuffer.h"

namespace Divide {

class AtomicCounter;
class glBufferImpl;
class glGenericBuffer;
class glBufferLockManager;

/// Base class for shader uniform blocks
class glUniformBuffer final : public ShaderBuffer {
    USE_CUSTOM_ALLOCATOR
   public:
     glUniformBuffer(GFXDevice& context,
                     const ShaderBufferParams& params);
    ~glUniformBuffer();

    void getData(ptrdiff_t offsetElementCount,
                 ptrdiff_t rangeElementCount,
                 bufferPtr result) const override;

    void updateData(ptrdiff_t offsetElementCount,
                    ptrdiff_t rangeElementCount,
                    const bufferPtr data) override;

    bool bindRange(U32 bindIndex,
                   U32 offsetElementCount,
                   U32 rangeElementCount) override;

    bool bind(U32 bindIndex) override;

    GLuint bufferID() const;

    void addAtomicCounter(U32 sizeFactor = 1) override;

    U32  getAtomicCounter(U32 counterIndex = 0) override;

    void bindAtomicCounter(U32 counterIndex = 0, U32 bindIndex = 0) override;

    void resetAtomicCounter(U32 counterIndex = 0) override;

    static void onGLInit();

   protected:
    void printInfo(const ShaderProgram *shaderProgram, U32 bindIndex);

   protected:
    glBufferImpl* _buffer;
    size_t _allignedBufferSize;
    vectorImpl<AtomicCounter*> _atomicCounters;
};

};  // namespace Divide

#endif

Commits for Divide-Framework/trunk/Source Code/Platform/Video/OpenGL/Buffers/ShaderBuffer/Headers/glUniformBuffer.h

Diff revisions: vs.
Revision Author Commited Message
827 Diff Diff IonutCava picture IonutCava Sun 22 Jan, 2017 21:59:36 +0000

[IonutCava]
- ShaderBuffers now decide heuristically if they get persistently mapped or not (depends on size. Current limit is 512Kb for subData calls.
- Separate visible node command generation into 2 steps: onRender and getDrawPackage. onRender allows the creation of parallel tasks that should finish by the time the second call, getDrawPackage reaches the same node
- Update ParticleEmitter to take into account multiple players and increase parallelism at the cost of memory consumption and complexity.
- Add a default bounding box for Players (add extents to SceneTransform nodes)
- All buffers (ShaderBuffer, d3dConstantBuffer, glUniformBuffer, glBufferImpl, glGenericBuffer, etc) use BufferParams for creation.
— Constructor and create calls have been merged together

826 Diff Diff IonutCava picture IonutCava Fri 20 Jan, 2017 17:11:41 +0000

[IonutCava]
- Persistent buffer optimisations

807 Diff Diff IonutCava picture IonutCava Mon 09 Jan, 2017 17:06:26 +0000

[IonutCava]
- Split PlatformDefines.h into 2. Move data type defines to PlatformDataTypes.h
- Continue to improve velocity map calculation
- Remove “destroy()” calls from most classes. Attempt to move as many classes to the RAII system.

780 Diff Diff IonutCava picture IonutCava Tue 11 Oct, 2016 16:15:24 +0000

[IonutCava]
- AtomicCounter in glUniformBuffer is now based on a glGenericBuffer implementation
- GFXDevice <-> Camera relation cleaned up a bit
- Added a readback system for glGenericBuffer
- Fixed a bug with Z_PRE_PASS stage culling

762 Diff Diff IonutCava picture IonutCava Thu 11 Aug, 2016 16:18:35 +0000

[IonutCava]
- Removed a lot of high level GFX state and merged it back on a lower level:
— depth mask is now a framebuffer specific toggle controlled by the RenderPolicy
— rasterization is now a per-buffer draw switch toggled by a rendering flag in GenericDrawCommand
- Replaced old style GL texture binding code with DSA style glBindTextures and glBindSamplers even for single textures
— completely removed the concept of a active texture unit in the GL code
- Fixed some draw policy settings that were clearing the depth buffer in the PostFX passes
- More build type flag replacement of macros
- Render pass system bug fixing
- Add option to skip occlusion culling for certain nodes

734 Diff Diff IonutCava picture IonutCava Tue 21 Jun, 2016 16:28:11 +0000

[IonutCava]
- Added a render target pool:
— All render targets are now allocated (and tracked) by the GFXDevice.
— Allocation routines return a slim RenderTargetHandle object that will be used later on in draw commands.

- Added a refraction render pass that will handle translucent objects that need refracted textures instead of clear transparency
— Both reflective nodes and refractive nodes are not gathered properly at this point

- All API specific objects (buffers, textures, etc) are now initialized in the GFXDevice class (see GFXDeviceObjects.cpp)
— This allowed for the slimming of the RenderAPIWrapper interface

- Improved ENABLE_GPU_VALIDATION macro utilization:
— It enabled shadow map split plane debugging
— It bypasses loading shaders from text cache

727 Diff Diff IonutCava picture IonutCava Tue 14 Jun, 2016 16:01:38 +0000

[IonutCava]
- Remove node and cmd buffers from GFXDevice and add them as a new BufferData struct to RenderPass class.
— Each render pass holds its own buffers
- Improvements / fixes to the CSM code
- Added a global toggle to enable/disable custom memory allocators

720 Diff Diff IonutCava picture IonutCava Mon 06 Jun, 2016 15:51:06 +0000

[IonutCava]
- PVS-Studio guided static analysis fixes and optimizations
- Added a flag to SceneState to bypass the Save/Load system not needed for certain types of scenes (menus, cinematics, etc)

713 Diff Diff IonutCava picture IonutCava Wed 25 May, 2016 15:43:38 +0000

[IonutCava]
- Removed all unique_ptr’s from the code with classic new/delete pairs. They were seriously not needed.
- Added the concept of SceneComponent to scene specific classes: aiManager, lightPool, sceneGraph, physicsInterface etc
— This allowed the removal of the global GET_ACTIVE_SCENEGRAPH call;

712 IonutCava picture IonutCava Tue 24 May, 2016 16:18:37 +0000

[IonutCava]
- Added the concept of “buffer” to be used by GenericVertexData and ShaderBuffer without caring if it’s persistent or not.
— Persistent buffers handle their own locking instead of relying on the parent class
- HiZ occlusion culling fixes and optimizations