XNA transparancy

hello,

im making a game with XNA, but when I draw diffrent layers it's not drawing them transparancy, why? (just run the game and you'll see)

thanks in advanced,

jimpie

It would be alot easier if you just posted the code in your Draw-method. Alot of people are reluctant to download an entire zipped project. :)

Quote:

---

Originally Posted by Atheist

It would be alot easier if you just posted the code in your Draw-method. Alot of people are reluctant to download an entire zipped project. :)

---

Code:

---

Imports System.Windows.Forms

Public Class frmMain

    Public GDevice As GraphicsDevice
    Public OurContent As clsContent.GameContent

    Public test As Texture2D

    Public SBatch As SpriteBatch

    Public Function InitalizeGraphics(ByRef Surface As PictureBox) As Boolean

        Dim retValue As Boolean

        Try
            Dim PParam As New PresentationParameters
            PParam.PresentationInterval = PresentInterval.Immediate
            PParam.DeviceWindowHandle = Surface.Handle
            PParam.IsFullScreen = False

            Dim GAdapter As GraphicsAdapter = GraphicsAdapter.Adapters.Item(0)
            GDevice = New GraphicsDevice(GAdapter, GraphicsProfile.HiDef, PParam)

            OurContent = New clsContent.GameContent(GDevice)
            OurContent.Content.RootDirectory = "Content"

            SBatch = New SpriteBatch(GDevice)

            LoadGraphics()

            retValue = True

        Catch ex As Exception

            retValue = False

        End Try

        Return retValue

    End Function

    Public Sub LoadGraphics()

        test = OurContent.Content.Load(Of Texture2D)("2")

    End Sub
    Private Sub frmMain_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

        ''
        P(MyIndex).Map = 1


        For x = 0 To 50
            For y = 0 To 50
                Tile(1, x, y, LAYER_GROUND).X = 0
                Tile(1, x, y, LAYER_GROUND).Y = 0
                Tile(1, 3, 7, LAYER_MASK).X = 7
                Tile(1, 3, 7, LAYER_MASK).Y = 0
            Next
        Next

        For i = 0 To 50
            Map(i).X = 50
            Map(i).Y = 50
        Next

        ''

        Me.Show()

        If InitalizeGraphics(PBGame) = False Then
            MessageBox.Show("Error while initializing graphics")
            End
        End If

        Call GameLoop()

    End Sub

    Private Sub GameLoop()

        Dim IsRunning As Boolean = True

        Do While IsRunning

            GDevice.Clear(Color.CornflowerBlue)

            'GROUND LAYER
            SBatch.Begin()
            For X = 0 To Map(P(MyIndex).Map).X
                For Y = 0 To Map(P(MyIndex).Map).Y
                    SBatch.Draw(test, New Rectangle(X * 32, Y * 32, 32, 32), New Rectangle(Tile(P(MyIndex).Map, X, Y, LAYER_GROUND).X * 32, Tile(P(MyIndex).Map, X, Y, LAYER_GROUND).Y * 32, 32, 32), Color.White)
                Next
            Next
            SBatch.End()
            'END GROUND

            'MASK LAYER
            SBatch.Begin()
            For X = 0 To Map(P(MyIndex).Map).X
                For Y = 0 To Map(P(MyIndex).Map).Y
                    SBatch.Draw(test, New Rectangle(X * 32, Y * 32, 32, 32), New Rectangle(Tile(P(MyIndex).Map, X, Y, LAYER_MASK).X * 32, Tile(P(MyIndex).Map, X, Y, LAYER_MASK).Y * 32, 32, 32), Color.White)
                Next
            Next
            SBatch.End()
            'END MASK

            GDevice.Present()

            Application.DoEvents()
        Loop

    End Sub

End Class

---

Code:

---

Public Class clsContent

    Public Class GameContent

        Public Content As ContentManager
        Private ServiceHelper As New ServiceHelper

        Public Sub New(GraphicsDevice As GraphicsDevice)
            ServiceHelper.GraphicsDeviceService(GraphicsDevice)
            Me.Content = New Content.ContentManager(ServiceHelper)
            Me.Content.RootDirectory = "Content"
        End Sub

    End Class

    Public Class ServiceHelper
        Implements IServiceProvider
        Implements IGraphicsDeviceService

        Public Function GetService(ByVal serviceType As System.Type) As Object Implements System.IServiceProvider.GetService
            Return Me
        End Function

        Public Event DeviceCreated(ByVal sender As Object, ByVal e As System.EventArgs) Implements Microsoft.Xna.Framework.Graphics.IGraphicsDeviceService.DeviceCreated
        Public Event DeviceDisposing(ByVal sender As Object, ByVal e As System.EventArgs) Implements Microsoft.Xna.Framework.Graphics.IGraphicsDeviceService.DeviceDisposing
        Public Event DeviceReset(ByVal sender As Object, ByVal e As System.EventArgs) Implements Microsoft.Xna.Framework.Graphics.IGraphicsDeviceService.DeviceReset
        Public Event DeviceResetting(ByVal sender As Object, ByVal e As System.EventArgs) Implements Microsoft.Xna.Framework.Graphics.IGraphicsDeviceService.DeviceResetting

        Private _gd As GraphicsDevice

        Public Sub GraphicsDeviceService(ByVal gd As GraphicsDevice)
            _gd = gd
        End Sub

        Public ReadOnly Property GraphicsDevice() As Microsoft.Xna.Framework.Graphics.GraphicsDevice Implements Microsoft.Xna.Framework.Graphics.IGraphicsDeviceService.GraphicsDevice
            Get
                Return _gd
            End Get
        End Property
    End Class

End Class

---

Take a look at the SpriteBatch.Begin overloads, specifically this one.
The BlendState object determines how alpha blending is handled when rendering. Pass BlendState.AlphaBlend (or null, which defaults to AlphaBlend).

I assume you have confirmed that the textures do contain an alpha channel?

Quote:

---

Originally Posted by Atheist

Take a look at the SpriteBatch.Begin overloads, specifically this one.
The BlendState object determines how alpha blending is handled when rendering. Pass BlendState.AlphaBlend (or null, which defaults to AlphaBlend).

I assume you have confirmed that the textures do contain an alpha channel?

---

Yes, they have a transparancy background.

now I've changed this in my code:

Code:

---

SBatch.Begin

---

to

Code:

---

            SBatch.Begin(SpriteSortMode.Texture, BlendState.AlphaBlend)

---

and it helped ^_^

thanks!