ogl device buffer creation

now ogl mirrors dx side with ubo creation and clearing pushed up to the device level.

Engine/source/gfx/D3D11/gfxD3D11Shader.cpp

@@ -155,6 +155,14 @@ GFXD3D11ShaderConstBuffer::~GFXD3D11ShaderConstBuffer()
    }
    mBufferMap.clear(); // Clear the map
 
+   for (U32 i = 0; i < 6; i++)
+   {
+      for (U32 j = 0; j < 16; j++)
+      {
+         mBoundBuffers[i][j] = nullptr;
+      }
+   }
+
    if (mShader)
       mShader->_unlinkBuffer(this);
 }

Engine/source/gfx/gl/gfxGLDevice.cpp

@@ -292,6 +292,11 @@ GFXGLDevice::~GFXGLDevice()
       mTextureManager->kill();
    }
 
+   // Free device buffers
+   DeviceBufferMap::Iterator bufferIter = mDeviceBufferMap.begin();
+   for (; bufferIter != mDeviceBufferMap.end(); ++bufferIter)
+      glDeleteBuffers(1, &bufferIter->value);
+
    GFXResource* walk = mResourceListHead;
    while(walk)
    {
@@ -307,6 +312,23 @@ GFXGLDevice::~GFXGLDevice()
    SAFE_DELETE( mOpenglStateCache );
 }
 
+GLuint GFXGLDevice::getDeviceBuffer(const GFXShaderConstDesc desc)
+{
+   String name(desc.name + "_" + String::ToString(desc.size));
+   DeviceBufferMap::Iterator buf = mDeviceBufferMap.find(name);
+   if (buf != mDeviceBufferMap.end())
+   {
+      return mDeviceBufferMap[name];
+   }
+
+   GLuint uboHandle;
+   glGenBuffers(1, &uboHandle);
+
+   mDeviceBufferMap[name] = uboHandle;
+
+   return uboHandle;
+}
+
 void GFXGLDevice::zombify()
 {
    mTextureManager->zombify();

Engine/source/gfx/gl/gfxGLDevice.h

@@ -47,6 +47,7 @@ class GFXGLShaderConstBuffer;
 
 class GFXGLDevice : public GFXDevice
 {
+
 public:
    struct GLCapabilities
    {
@@ -60,6 +61,11 @@ public:
    };
    GLCapabilities mCapabilities;
 
+   // UBO map
+   typedef Map<String, GLuint> DeviceBufferMap;
+   // grab device buffer.
+   GLuint getDeviceBuffer(const GFXShaderConstDesc desc);
+
    void zombify();
    void resurrect();
    GFXGLDevice(U32 adapterIndex);
@@ -202,6 +208,8 @@ protected:
    virtual void setVertexStream( U32 stream, GFXVertexBuffer *buffer );
    virtual void setVertexStreamFrequency( U32 stream, U32 frequency );
    StrongRefPtr<GFXGLShaderConstBuffer> mCurrentConstBuffer;
+   DeviceBufferMap mDeviceBufferMap;
+
 private:
    typedef GFXDevice Parent;
 

Engine/source/gfx/gl/gfxGLShader.cpp

@@ -434,30 +434,27 @@ void GFXGLShaderConstBuffer::activate(GFXGLShaderConstBuffer* prevShaderBuffer)
    mWasLost = false;
 }
 
-void GFXGLShaderConstBuffer::addBuffer(S32 bufBindingPoint, U32 size)
+void GFXGLShaderConstBuffer::addBuffer(const GFXShaderConstDesc desc)
 {
    // if this is the global buffer set it to the highest.
-   if (bufBindingPoint == -1)
+   if (desc.bindPoint == -1)
    {
       // we dont create a bufferhandle for this one.
-      U8* buf = new U8[size];
-      dMemset(buf, 0, size);
+      U8* buf = new U8[desc.size];
+      dMemset(buf, 0, desc.size);
       mBufferMap[-1].data = buf;
-      mBufferMap[-1].size = size;
+      mBufferMap[-1].size = desc.size;
       mBufferMap[-1].isDirty = true;
    }
    else
    {
-      U8* buf = new U8[size];
-      dMemset(buf, 0, size);
-      mBufferMap[bufBindingPoint].data = buf;
-      mBufferMap[bufBindingPoint].size = size;
-      mBufferMap[bufBindingPoint].isDirty = true;
+      U8* buf = new U8[desc.size];
+      dMemset(buf, 0, desc.size);
+      mBufferMap[desc.bindPoint].data = buf;
+      mBufferMap[desc.bindPoint].size = desc.size;
+      mBufferMap[desc.bindPoint].isDirty = true;
 
-      GLuint uboHandle;
-      glGenBuffers(1, &uboHandle);
-
-      mBufferMap[bufBindingPoint].bufHandle = uboHandle;
+      mBufferMap[desc.bindPoint].bufHandle = GFXGL->getDeviceBuffer(desc);
    }
 }
 
@@ -478,7 +475,7 @@ void GFXGLShaderConstBuffer::onShaderReload(GFXGLShader* shader)
    for (GFXGLShader::BufferMap::Iterator i = shader->mBuffers.begin(); i != shader->mBuffers.end(); ++i)
    {
       // add our buffer descriptions to the full const buffer.
-      this->addBuffer(i->value.bindPoint, i->value.size);
+      this->addBuffer(i->value);
    }
 
    mWasLost = true;
@@ -1161,7 +1158,7 @@ GFXShaderConstBufferRef GFXGLShader::allocConstBuffer()
    for (BufferMap::Iterator i = mBuffers.begin(); i != mBuffers.end(); ++i)
    {
       // add our buffer descriptions to the full const buffer.
-      buffer->addBuffer(i->value.bindPoint, i->value.size);
+      buffer->addBuffer(i->value);
    }
 
    buffer->registerResourceWithDevice(getOwningDevice());

Engine/source/gfx/gl/gfxGLShader.h

@@ -111,7 +111,7 @@ public:
    /// Called by GFXGLDevice to activate this buffer.
    void activate(GFXGLShaderConstBuffer* prevShaderBuffer);
 
-   void addBuffer(S32 bufBindingPoint, U32 size);
+   void addBuffer(const GFXShaderConstDesc desc);
 
    /// Called when the shader this buffer references is reloaded.
    void onShaderReload(GFXGLShader* shader);