Transition between images

Hum, I have to learn directX so Do you know any good tutorial, sample or kick start about this topic ? thanks for your help Fabien

Hi, For performance, I would recommend using a Direct3D sprite. You can create your textures using a color key for transparency, and enable alpha blending and achieve the same results you are achieving with GDI+, but in a much more efficient manner.

Here a sample of my code: I create an array of bitmap for the double buffering then I call this function x times to fill it then I display bitmap after bitmap iwith a timer For sure it is working,, but it's quite slow any idea to increase the speed ? Regards, Fabien Mas ------------------------------------------------------------------------------------------ private Bitmap transition_Matrice1(int iEtape) { Bitmap bmAlpha; unsafe { // Angle float angle = (360.0f/(this.iNbEtapes-1))*iEtape; float echelle = 1.0f - (float)(iEtape)/(float)(this.iNbEtapes); // la nvelle img bmAlpha = new Bitmap(this.bmAffichee, new Size(this.iCompressionLargeur,this.iCompressionHauteur)); Graphics grAlpha = Graphics.FromImage(bmAlpha); ImageAttributes ia = new ImageAttributes(); Rectangle rTaille = new Rectangle(0,0,this.iCompressionLargeur,this.iCompressionHauteur); TextureBrush tb =new TextureBrush(this.bmAffichee,rTaille,ia); Matrix m=new Matrix(); //m.Translate((float)iEtape*5.0f,10.0f); //m.RotateAt(angle,new Point(this.iCompressionLargeur/2,this.iCompressionHauteur/2)); m.Scale(echelle,echelle); tb.MultiplyTransform(m); // on dessine l'img du dessous grAlpha.DrawImage(this.bmSuivante,rTaille,0,0,this.iCompressionLargeur, this.iCompressionHauteur, GraphicsUnit.Pixel, ia); // on remplit avec la njvelle semi-transparente grAlpha.FillRectangle(tb, rTaille); } return bmAlpha; }