Am I doing this right?

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HI, guys I heard that converting bitmaps to 32bppPArgb is a great boost for GDI+,
I was wondering if I'm doing this thing right, this is my code:

CREATING THE TEXTURE:

VB

'set the default program dir:
        strDefDir = My.Computer.FileSystem.CurrentDirectory & "\"
'load texture:
        bmpTexture = Image.FromFile(strDefDir & "tex.bmp")

'convert texture to32bppPArgb:
        Dim bmpTemp As New Bitmap(256, 256, Imaging.PixelFormat.Format32bppPArgb)
        Dim gTemp As Graphics = Graphics.FromImage(bmpTemp)
        gTemp.DrawImageUnscaled(bmpTexture, 0, 0)
        bmpTexture = bmpTemp
        gTemp.Dispose()

DRAWING THE TEXTURE:

VB

Private Sub frmGraphicsDevice_Paint(sender As Object, e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        e.Graphics.CompositingQuality = Drawing2D.CompositingQuality.HighSpeed
        e.Graphics.DrawImage(bmpTexture, ptrDrawPoint)
  End Sub

Thank You!

Posted 29-Dec-12 2:52am

O.G.I.

Updated 29-Dec-12 3:38am

Akinmade Bond

v2

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Christian Graus · Accepted Answer · 2012-12-29T10:18:00

Solution 1

Looks OK. But it's not really that great a 'boost', esp if your image was 24 bit to start with ( the other 8 bits are not used ).

Unless you're using a Commodore 64, or using GDI+ for things it's not good for ( i.e. games ), this won't really speed things up much.

Posted 29-Dec-12 10:18am

Christian Graus

Comments

O.G.I. 29-Dec-12 19:49pm

I'm making a very simple game, where there is only 5 to 15 sprites, and the playground is something like 2000 x 2000 pixels. The images I'm using for the playground texture are 16 bit bitmaps, so is it better to use something like 16bppRgb565 for image format because of the 16 bits lost, or 32bppPArgb will give me better performance?