public void DrawShadow(Model model, Matrix world)
{

device.Clear(ClearOptions.Stencil, Color.Black, 0, 0);

dsstate.StencilEnable = true;
dsstate.DepthBufferEnable = true;
dsstate.ReferenceStencil = 0;
dsstate.StencilFunction = CompareFunction.Equal;
dsstate.StencilPass = StencilOperation.Increment;


foreach (ModelMesh mesh in model.Meshes) {
foreach (Effect effect in mesh.Effects)
{
effect.CurrentTechnique = effect.Techniques["Shadow"];
effect.Parameters["World"].SetValue(world*shadow);
effect.Parameters["AlphaTestDirection"].SetValue(-1f);
effect.Parameters["View"].SetValue(FreeCamera.ActiveCamera.View);
effect.Parameters["Projection"].SetValue(FreeCamera.ActiveCamera.Projection);
}
mesh.Draw();
}

dsstate.StencilEnable = false;

}

[/quote]



http://imageshack.us...07/shadowa.jpg/



A few more questions. How can i render the shadow of the leafs that i rendered using a 2 pass approach? I mean, using the correct alpha values.
And is this method efficient for rendering the shadows? I mean, i`ll set the DepthStencilState only once per draw, not for every model, of course, but the DrawShadow() code above was just for testing 1-2 objects.

there is shadow on the screenshot

http://www.iimmgg.co...7d6e791518fac40

See the 1st half of the picture? there`s only 1 shape, 1 silhouette, 1 contour.
On the second one, there are many. And they are overlapping. You can easily see that.

The 1st half is actually just like the 2nd, except i use 1 for alpha, not 0.3 or whatever. The 2nd has many semi-transparent parts, one over the other. Thing is , i want just 1 shadow, like in the 1st part, that i can make semi-transparent.

[quote name='andreilng' timestamp='1306200407' post='4814837']
http://www.iimmgg.co...7d6e791518fac40

See the 1st half of the picture? there`s only 1 shape, 1 silhouette, 1 contour.
On the second one, there are many. And they are overlapping. You can easily see that.

The 1st half is actually just like the 2nd, except i use 1 for alpha, not 0.3 or whatever. The 2nd has many semi-transparent parts, one over the other. Thing is , i want just 1 shadow, like in the 1st part, that i can make semi-transparent.