//
// FNA3D_SetViewport
//
public static void FNA3D_SetViewport(IntPtr device, ref FNA3D_Viewport viewport)
{
var renderer = Renderer.Get(device);
var state = (State)renderer.UserData;
var v = viewport;
if (state.AdjustViewport && (!state.RenderToTexture) &&
v.x == 0 && v.y == 0 && v.w > 0 && v.h > 0 &&
v.w == state.BackBufferWidth && v.h == state.BackBufferHeight)
{
var(s_w, s_h) = (renderer.SurfaceWidth, renderer.SurfaceHeight);
if (v.w >= v.h)
{
// adjust from virtual landscape
v.h = (int)((v.h * s_w) / (float)v.w);
v.w = s_w;
v.y = (s_h - v.h) / 2;
}
else
{
// adjust from virtual portrait
v.w = (int)((v.w * s_w) / (float)v.h);
v.h = s_h;
v.x = (s_w - v.w) / 2;
}
}
Renderer.Get(device).Send(false, () =>
{
GLES20.glViewport(v.x, v.y, v.w, v.h);
GLES20.glDepthRangef(v.minDepth, v.maxDepth);
});
}
public static extern void FNA3D_SetViewport(
IntPtr device,
ref FNA3D_Viewport viewport
);
