/// <summary>
/// Draws a stretched sub-region of a texture.
/// </summary>
/// <param name="material">The material used when rendering. The material must implement ITextureMaterial.</param>
/// <param name="dstRect">Rectangle where the texture object will be drawn.</param>
/// <param name="srcRect">Sub-region of the texture that will be applied over the <paramref name="dstRect"/>.</param>
/// <param name="flipMode">Any flipping to be done of the source texture.</param>
public static void BitmapStretchSR(RenderMaterial material, RectangleF dstRect, RectangleF srcRect, BitmapFlip flipMode)
{
// setup render state
GUICanvas.Instance.RenderState.World.LoadIdentity();
GUICanvas.Instance.RenderState.View = Matrix.Identity;
GUICanvas.Instance.RenderState.Projection = _clipMatrix;
// setup the material
material.SetupEffect(GUICanvas.Instance.RenderState, null);
_texLeft = srcRect.X / ((Texture2D)((ITextureMaterial)material).Texture.Instance).Width;
_texRight = (srcRect.X + srcRect.Width) / ((Texture2D)((ITextureMaterial)material).Texture.Instance).Width;
_texTop = srcRect.Y / ((Texture2D)((ITextureMaterial)material).Texture.Instance).Height;
_texBottom = (srcRect.Y + srcRect.Height) / ((Texture2D)((ITextureMaterial)material).Texture.Instance).Height;
_screenLeft = dstRect.X;
_screenRight = dstRect.X + dstRect.Width;
_screenTop = dstRect.Y;
_screenBottom = dstRect.Y + dstRect.Height;
// flip x
if ((flipMode & BitmapFlip.FlipX) != 0)
{
float temp = _texLeft;
_texLeft = _texRight;
_texRight = temp;
}
// flip y
if ((flipMode & BitmapFlip.FlipY) != 0)
{
float temp = _texTop;
_texTop = _texBottom;
_texBottom = temp;
}
color = _bitmapModulation;
_vertexSet4[0].Position = new Vector3(_screenLeft - 0.5f, _screenTop - 0.5f, 0.0f);
_vertexSet4[0].TextureCoordinate = new Vector2(_texLeft, _texTop);
_vertexSet4[0].Color = color;
_vertexSet4[1].Position = new Vector3(_screenRight - 0.5f, _screenTop - 0.5f, 0.0f);
_vertexSet4[1].TextureCoordinate = new Vector2(_texRight, _texTop);
_vertexSet4[1].Color = color;
_vertexSet4[2].Position = new Vector3(_screenLeft - 0.5f, _screenBottom - 0.5f, 0.0f);
_vertexSet4[2].TextureCoordinate = new Vector2(_texLeft, _texBottom);
_vertexSet4[2].Color = color;
_vertexSet4[3].Position = new Vector3(_screenRight - 0.5f, _screenBottom - 0.5f, 0.0f);
_vertexSet4[3].TextureCoordinate = new Vector2(_texRight, _texBottom);
_vertexSet4[3].Color = color;
// adltodo: hacks
_workingRenderInstance = SceneRenderer.RenderManager.AllocateInstance();
_workingRenderInstance.ObjectTransform = Matrix.Identity;
GUICanvas.Instance.RenderState.Gfx.Device.VertexDeclaration = GFXVertexFormat.GetVertexDeclaration(GUICanvas.Instance.RenderState.Gfx.Device);
// draw the vertices
while (material.SetupPass())
{
material.SetupObject(_workingRenderInstance, GUICanvas.Instance.RenderState);
GUICanvas.Instance.RenderState.Gfx.Device.DrawUserPrimitives<GFXVertexFormat.PCTTBN>(PrimitiveType.TriangleStrip, _vertexSet4, 0, 2);
}
// cleanup the material
material.CleanupEffect();
SceneRenderer.RenderManager.FreeInstance(_workingRenderInstance);
}
