/// <summary>
/// </summary>
protected override void UpdateFromShadow()
{
if (useShadowBuffer && shadowUpdated && !suppressHardwareUpdate)
{
var srcData = shadowBuffer.Lock(lockStart, lockSize, BufferLocking.ReadOnly);
OpenGL.BindBuffer(All.ElementArrayBuffer, this._bufferId);
GLESConfig.GlCheckError(this);
var srcPtr = new IntPtr(srcData.Ptr);
// Update whole buffer if possible, otherwise normal
if (lockStart == 0 && lockSize == sizeInBytes)
{
OpenGL.BufferData(All.ElementArrayBuffer, new IntPtr(sizeInBytes), srcPtr, GLESHardwareBufferManager.GetGLUsage(usage));
GLESConfig.GlCheckError(this);
}
else
{
OpenGL.BufferSubData(All.ElementArrayBuffer, new IntPtr(lockStart), new IntPtr(lockSize), srcPtr);
GLESConfig.GlCheckError(this);
}
shadowBuffer.Unlock();
shadowUpdated = false;
}
}
/// <summary>
/// </summary>
/// <param name="offset"> </param>
/// <param name="length"> </param>
/// <param name="src"> </param>
/// <param name="discardWholeBuffer"> </param>
public override void WriteData(int offset, int length, BufferBase src, bool discardWholeBuffer)
{
OpenGL.BindBuffer(All.ElementArrayBuffer, this._bufferId);
GLESConfig.GlCheckError(this);
// Update the shadow buffer
if (useShadowBuffer)
{
var destData = shadowBuffer.Lock(offset, length, discardWholeBuffer ? BufferLocking.Discard : BufferLocking.Normal);
Memory.Copy(src, destData, length);
shadowBuffer.Unlock();
}
var srcPtr = src.Ptr;
if (offset == 0 && length == sizeInBytes)
{
OpenGL.BufferData(All.ElementArrayBuffer, new IntPtr(sizeInBytes), ref srcPtr, GLESHardwareBufferManager.GetGLUsage(usage));
GLESConfig.GlCheckError(this);
}
else
{
if (discardWholeBuffer)
{
OpenGL.BufferData(All.ElementArrayBuffer, new IntPtr(sizeInBytes), IntPtr.Zero, GLESHardwareBufferManager.GetGLUsage(usage));
GLESConfig.GlCheckError(this);
}
// Now update the real buffer
OpenGL.BufferSubData(All.ElementArrayBuffer, new IntPtr(offset), new IntPtr(length), ref srcPtr);
GLESConfig.GlCheckError(this);
}
if (src.Ptr != srcPtr)
{
LogManager.Instance.Write("[GLES2] HardwareIndexBuffer.WriteData - buffer pointer modified by GL.BufferData.");
}
}