private void PlatformDrawUserIndexedPrimitives <T>(PrimitiveType primitiveType, T[] vertexData, int vertexOffset, int numVertices, int[] indexData, int indexOffset, int primitiveCount, VertexDeclaration vertexDeclaration) where T : struct
{
ApplyState(true);
// Unbind current VBOs.
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GraphicsExtensions.CheckGLError();
GL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
GraphicsExtensions.CheckGLError();
_vertexBuffersDirty = _indexBufferDirty = true;
// Pin the buffers.
var vbHandle = GCHandle.Alloc(vertexData, GCHandleType.Pinned);
var ibHandle = GCHandle.Alloc(indexData, GCHandleType.Pinned);
var vertexAddr = (IntPtr)(vbHandle.AddrOfPinnedObject().ToInt64() + vertexDeclaration.VertexStride * vertexOffset);
// Setup the vertex declaration to point at the VB data.
vertexDeclaration.GraphicsDevice = this;
vertexDeclaration.Apply(_vertexShader, vertexAddr);
//Draw
GL.DrawElements(PrimitiveTypeGL(primitiveType),
GetElementCountArray(primitiveType, primitiveCount),
DrawElementsType.UnsignedInt,
(IntPtr)(ibHandle.AddrOfPinnedObject().ToInt64() + (indexOffset * sizeof(int))));
GraphicsExtensions.CheckGLError();
// Release the handles.
ibHandle.Free();
vbHandle.Free();
}
private void PlatformDrawUserPrimitives <T>(PrimitiveType primitiveType, T[] vertexData, int vertexOffset, VertexDeclaration vertexDeclaration, int vertexCount) where T : struct
{
ApplyState(true);
// Unbind current VBOs.
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GraphicsExtensions.CheckGLError();
GL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
GraphicsExtensions.CheckGLError();
_vertexBuffersDirty = _indexBufferDirty = true;
// Pin the buffers.
var vbHandle = GCHandle.Alloc(vertexData, GCHandleType.Pinned);
// Setup the vertex declaration to point at the VB data.
vertexDeclaration.GraphicsDevice = this;
vertexDeclaration.Apply(_vertexShader, vbHandle.AddrOfPinnedObject());
//Draw
GL.DrawArrays(PrimitiveTypeGL(primitiveType),
vertexOffset,
vertexCount);
GraphicsExtensions.CheckGLError();
// Release the handles.
vbHandle.Free();
}