void DrawShadows(Scene scene)
{
foreach (Shadow shadow in scene.Shadows)
{
if (shadow.Vertices != null)
{
float[] vertices = new float[2 * 4];
Color4[] colors = new Color4[4];
for (int i = 0; i < 4; i++)
{
vertices[i * 2 + 0] = shadow.Vertices[i].X;
vertices[i * 2 + 1] = shadow.Vertices[i].Y;
colors[i].R = 0.0f;
colors[i].G = 0.0f;
colors[i].B = 0.0f;
colors[i].A = 0.2f;
}
Geometry shadowGeometry =
new Geometry(OpenTK.Graphics.OpenGL4.PrimitiveType.Triangles, shadow.Vertices, shadow.Colors, null, null);
ShadowEffect.Begin();
ShadowEffect.WorldViewMatrix = Camera.ProjectionMatrix * Camera.ViewMatrix;
shadowGeometry.Draw();
ShadowEffect.End();
GL.BindVertexArray(0);
}
}
}