public void apply(bool centerCamera)
{
HdpiUtils.glViewport(screenX, screenY, screenWidth, screenHeight);
camera.viewportWidth = worldWidth;
camera.viewportHeight = worldHeight;
if (centerCamera)
{
camera.position = new Vector3(worldWidth / 2, worldHeight / 2, 0);
}
camera.update();
}
public static Rectangle popScissors()
{
var li = scissors.Count - 1;
Rectangle old = scissors[li];
scissors.RemoveAt(li);
if (scissors.Count == 0)
{
GL.Disable(EnableCap.ScissorTest);
}
else
{
Rectangle scissor = scissors[scissors.Count - 1];
HdpiUtils.glScissor((int)scissor.x, (int)scissor.y, (int)scissor.width, (int)scissor.height);
}
return(old);
}
public static bool pushScissors(Rectangle scissor)
{
fix(scissor);
if (scissors.Count == 0)
{
if (scissor.width < 1 || scissor.height < 1)
{
return(false);
}
GL.Enable(EnableCap.ScissorTest);
}
else
{
// merge scissors
Rectangle parent = scissors[scissors.Count - 1];
float minX = Math.Max(parent.x, scissor.x);
float maxX = Math.Min(parent.x + parent.width, scissor.x + scissor.width);
if (maxX - minX < 1)
{
return(false);
}
float minY = Math.Max(parent.y, scissor.y);
float maxY = Math.Min(parent.y + parent.height, scissor.y + scissor.height);
if (maxY - minY < 1)
{
return(false);
}
scissor.x = minX;
scissor.y = minY;
scissor.width = maxX - minX;
scissor.height = Math.Max(1, maxY - minY);
}
scissors.Add(scissor);
HdpiUtils.glScissor((int)scissor.x, (int)scissor.y, (int)scissor.width, (int)scissor.height);
return(true);
}
