private void drawChildren(Action <TexturedVertex2D> vertexAction, Vector2 frameBufferSize)
{
// Fill the frame buffer with drawn children
using (bindFrameBuffer(currentFrameBuffer, frameBufferSize))
{
// We need to draw children as if they were zero-based to the top-left of the texture.
// We can do this by adding a translation component to our (orthogonal) projection matrix.
GLWrapper.PushOrtho(ScreenSpaceDrawRectangle);
GLWrapper.ClearColour(BackgroundColour);
base.Draw(vertexAction);
GLWrapper.PopOrtho();
}
}
protected override void PostDraw()
{
frameBuffer.Unbind();
GLWrapper.PopOrtho();
GLWrapper.PopViewport();
GLWrapper.SetBlend(BlendingFactorSrc.One, BlendingFactorDest.OneMinusSrcAlpha);
Rectangle textureRect = new Rectangle(0, frameBuffer.Texture.Height, frameBuffer.Texture.Width, -frameBuffer.Texture.Height);
frameBuffer.Texture.Draw(ScreenSpaceDrawQuad, textureRect, DrawInfo.Colour, quadBatch);
// In the case of nested framebuffer containerse we need to draw to
// the last framebuffer container immediately, so let's force it
ActiveBatch.Draw();
}
public sealed override void Draw(Action <TexturedVertex2D> vertexAction)
{
if (RequiresRedraw)
{
FrameStatistics.Increment(StatisticsCounterType.FBORedraw);
SharedData.ResetCurrentEffectBuffer();
using (establishFrameBufferViewport())
{
// Fill the frame buffer with drawn children
using (BindFrameBuffer(SharedData.MainBuffer))
{
// We need to draw children as if they were zero-based to the top-left of the texture.
// We can do this by adding a translation component to our (orthogonal) projection matrix.
GLWrapper.PushOrtho(screenSpaceDrawRectangle);
GLWrapper.Clear(new ClearInfo(backgroundColour));
Child.Draw(vertexAction);
GLWrapper.PopOrtho();
}
PopulateContents();
}
SharedData.DrawVersion = GetDrawVersion();
}
Shader.Bind();
base.Draw(vertexAction);
DrawContents();
Shader.Unbind();
}
