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Tasaq

ParentBone.Transform and depth problem

3 posts in this topic

I have multiple objects in my .fbx file so i wanted to place them right with MeshModel.ParenBone.Transform, but when i do so my depth is messed up (when you can see objects behind objects that are closer to camera). When I am drawing w/o bone transform everything is okay, I am so confused about it, have no clue how multiplying matrices can affect depth buffer :\ I also want to note that I am not using spriteBatch. Anyone knows how to fix this? [img]http://public.gamedev.net//public/style_emoticons/default/sad.png[/img]
here's my code for drawing:

[source]public void draw(Vector3 pos, Vector3 scale, float yaw, float pitch, float roll)
{
foreach (ModelMesh mesh in model.Meshes)
{
foreach (BasicEffect effect in mesh.Effects)
{
effect.World = mesh.ParentBone.Transform * Matrix.CreateScale(Scale) * Matrix.CreateScale(scale) *
Matrix.CreateFromYawPitchRoll(yaw + Rotation.Y, pitch + Rotation.X, roll + Rotation.Z) *
Matrix.CreateTranslation(pos);
effect.EnableDefaultLighting();
effect.Projection = Projection;
effect.View = View;
effect.PreferPerPixelLighting = true;
effect.DiffuseColor *= Effects.DiffuseColor;
effect.SpecularColor *= Effects.SpecularColor;
effect.AmbientLightColor *= Effects.AmbientLightColor;
effect.Alpha = Effects.Alpha;
effect.EnableDefaultLighting();
}

mesh.Draw();
}
}[/source]
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question, how come you are using '[color=#000000][font=Consolas,]effect.EnableDefaultLighting();'[/font][/color]and '[color=#000000][font=Consolas,]Matrix.CreateScale(Scale)' [/font][/color]twice? Onto your question though, have you made sure that you
have depth testing enabled? try placing the following as the first line in your draw method:

[CODE]
GraphicsDevice.DepthStencilState = DepthStencilState.Default;
[/CODE]

Aimee.
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[quote name='AmzBee' timestamp='1330872269' post='4919176']
question, how come you are using '[color=#000000][font=Consolas,]effect.EnableDefaultLighting();'[/font][/color]and '[color=#000000][font=Consolas,]Matrix.CreateScale(Scale)' [/font][/color]twice? Onto your question though, have you made sure that you
have depth testing enabled? try placing the following as the first line in your draw method:

[CODE]
GraphicsDevice.DepthStencilState = DepthStencilState.Default;
[/CODE]

Aimee.
[/quote]
Those are different Scales [img]http://public.gamedev.net//public/style_emoticons/default/smile.png[/img] As for lighting I forgot to delete leftovers :\
I solved the problem but... I am still confused [img]http://public.gamedev.net//public/style_emoticons/default/smile.png[/img] code:
[CODE] public void draw(Vector3 pos, Vector3 scale, float yaw, float pitch, float roll)
{
foreach (ModelMesh mesh in model.Meshes)
{
foreach (BasicEffect effect in mesh.Effects)
{
effect.World = Matrix.CreateScale(Scale) * Matrix.CreateScale(scale) *
Matrix.CreateFromYawPitchRoll( Rotation.Y, Rotation.X, Rotation.Z) *
Matrix.CreateFromYawPitchRoll(yaw , pitch , roll ) *
Matrix.CreateTranslation(pos) ;
effect.EnableDefaultLighting();
effect.Projection = Projection;
effect.View = View;
effect.PreferPerPixelLighting = true;
effect.DiffuseColor *= Effects.DiffuseColor;
effect.SpecularColor *= Effects.SpecularColor;
effect.AmbientLightColor *= Effects.AmbientLightColor;
effect.Alpha = Effects.Alpha;
}
mesh.Draw();
}
}[/CODE]
Now I am not using bones, but I can see that objects are placed correct and there's no problem with depth anymore [img]http://public.gamedev.net//public/style_emoticons/default/smile.png[/img]
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Maybe this might work:

[CODE]
public void draw(Vector3 pos, Vector3 scale, float yaw, float pitch, float roll)
{
Matrix[] transforms = new Matrix[model.Bones.Count];
model.CopyAbsoluteBoneTransformsTo(transforms);

foreach (ModelMesh mesh in model.Meshes)
{

foreach (BasicEffect effect in mesh.Effects)
{
effect.World = transforms[mesh.ParentBone.Index]
* Matrix.CreateScale(Scale) * Matrix.CreateScale(scale)
* Matrix.CreateFromYawPitchRoll( Rotation.Y, Rotation.X, Rotation.Z)
* Matrix.CreateFromYawPitchRoll(yaw , pitch , roll )
* Matrix.CreateTranslation(pos);

effect.Projection = Projection;
effect.View = View;


effect.EnableDefaultLighting();
effect.PreferPerPixelLighting = true;
effect.DiffuseColor *= Effects.DiffuseColor;
effect.SpecularColor *= Effects.SpecularColor;
effect.AmbientLightColor *= Effects.AmbientLightColor;
effect.Alpha = Effects.Alpha;
}
mesh.Draw();
}

}
[/CODE]
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