I've put the device's renderstate at alphablendingenable = true (don't have any PS GFX card). But it doesn't seems to work. Am I missing something? Maybe should I try to put some texturestage state? But which value should I use?
System specs:
Windows 2000 SP4
Ati 7200 AIW
Dx 9 SDK (Apr 2005 release, jun release only works on XP and above)
Visual C# 2005 (with Framework .Net beta 2)
PNG with SpriteFlags.None: No transparency
PNG with SpriteFlags.AlphaBlending: No image displayed (very curious, isn't it?)
I surely miss something, but I don't know what. My last experience with Direct3D was with DirectX 6 (and C++ of course). I'm a bit lost with managed DirectX :/.
This will allow all channels to pass through. If you set this to 0 or black then the ARGB (0,0,0,0) will be multiplied to each pixel of your image.
Here is some sample code: This sample draws a red line from top left to bottom right.
Bitmap
Graphics g = Graphics.FromImage(myImage);
g.Clear(Color.FromArgb(0)); //Fill background with a transparent color
g.DrawLine(new Pen(Color.Red, 10),1,1,100,100);
Texture myTexture = new Texture(device, myImage, Usage.None, Pool.Managed);
Sprite sprite = new Sprite(device);
sprite.Begin(SpriteFlags.AlphaBlend);
sprite.Draw2D(myTexture, new Point(0, 0), 0, new Point(0, 0), Color.White);
sprite.End();
Hope this helps.
Andrew
