public static void DrawIndexed(PrimitiveType primitiveType, Shader shader, VertexBuffer vertexBuffer, IndexBuffer indexBuffer, int startIndex, int indicesCount)
{
VerifyParametersDrawIndexed(primitiveType, shader, vertexBuffer, indexBuffer, startIndex, indicesCount);
GLWrapper.ApplyRenderTarget(RenderTarget);
GLWrapper.ApplyViewportScissor(Viewport, ScissorRectangle, RasterizerState.ScissorTestEnable);
GLWrapper.ApplyShaderAndBuffers(shader, vertexBuffer.VertexDeclaration, IntPtr.Zero, vertexBuffer.m_buffer, indexBuffer.m_buffer);
GLWrapper.ApplyRasterizerState(RasterizerState);
GLWrapper.ApplyDepthStencilState(DepthStencilState);
GLWrapper.ApplyBlendState(BlendState);
GL.DrawElements(GLWrapper.TranslatePrimitiveType(primitiveType), indicesCount, GLWrapper.TranslateIndexFormat(indexBuffer.IndexFormat), new IntPtr(startIndex * indexBuffer.IndexFormat.GetSize()));
}