private void UpdateFrameBuffer()
{
int texWidth = Width + 1;
int texHeight = Height + titleRectangle.Height + 1;
if(Extentions.IsAvailable(Extentions.ArbTextureNonPowerOfTwo) == false)
{
texWidth = (int)Math.Pow(2, Math.Ceiling(Math.Log(texWidth, 2)));
texHeight = (int)Math.Pow(2, Math.Ceiling(Math.Log(texHeight, 2)));
}
int maxTextureSize;
GL.GetInteger(GetPName.MaxTextureSize, out maxTextureSize);
if (texWidth > maxTextureSize) texWidth = maxTextureSize;
if (texHeight > maxTextureSize) texHeight = maxTextureSize;
bool requiresSquareTexture = false; //TODO Find the proper cap to test.
if (requiresSquareTexture)
{
texWidth = texHeight = Math.Max(texWidth, texHeight);
}
if (frameBuffer == null || frameBuffer.width != texWidth || frameBuffer.height != texHeight)
{
SafeDispose<FrameBuffer>(ref frameBuffer);
frameBuffer = new FrameBuffer(texWidth, texHeight);
modelViewProjection = Matrix4Helper.CreateOrthographicProjection(0, texWidth, 0, texHeight, 0, 1);
}
int top = titleRectangle.Y;
int left = titleRectangle.X;
int right = titleRectangle.X + texWidth - 1;
int bottom = titleRectangle.Y + texHeight - 1;
frameBufferQuad[0] = new PositionTexture(left, top, 0, 0, 1);
frameBufferQuad[1] = new PositionTexture(left, bottom, 0, 0, 0);
frameBufferQuad[2] = new PositionTexture(right, top, 0, 1, 1);
frameBufferQuad[3] = new PositionTexture(right, bottom, 0, 1, 0);
}
