Graphics

[HugoSmits]

How can i create a custom texture file ? basically what i need is this :

byte vbuffer[256*256];

// plot a pixel
vbuffer[y * 256 + x] = Rgba(255,255,0,0);

and then move that into a texture 2d :

texture.setPixels(0,vbuffer);

Thanks for the help in advance!

[liquidwater91]

here's what i did to get it working:

[code]
uint[] vBuffer = new uint[256*256];
//Fill buffer to red
for(int i=0;i<256*256;i++) vBuffer[i] = 0xFF0000FF;
//Creature a RGBA texture.
Texture2D texture= new Texture2D(256, 256, false, PixelFormat.Rgba);
texture.SetPixels(0, vBuffer);
[/code]

edit: also, how exactly did u add the code tag?

[HugoSmits]

I'm already very thankful for the answer (it totally solves my problem).

But to make my life a bit easier; is there a easy way to convert a Rgba type to byte ?

[liquidwater91]

Rgba requires 32 bit's per each pixel, and a byte is only 8 bit's

for your implementation to work, you'd have to do:

[code]

byte[] vBuffer = new byte[16*16*4];
for(int i=0;i<16*16*4;i+=4){
    vBuffer[i+0] = 0xFF;  //Red
    vBuffer[i+1] = 0x0;    //Green
    vBuffer[i+2] = 0x0;    //Blue
    vBuffer[i+3] = 0xFF; //Alpha
}
Texture2D texture= new Texture2D(16, 16, false, PixelFormat.Rgba);
texture.SetPixels(0, vBuffer);

[/code]

[HugoSmits]

yes, i know. I just thought if there was a easy way convert rgba to  0xFF0000FF would be easier

but thanks a million anyway, it totally solves my problems!

[liquidwater91]

ah, do you mean like so:

[code]
public static uint RGBA(byte r, byte g, byte b, byte a){
//Seems uploading to set pixels expect RGBA as ABGR
return (uint)((a<<24)|(b<<16)|(g<<8)|r);
}
uint[] vBuffer = new uint[16*16];
for(int i=0;i<16*16;i++) vBuffer[i] = RGBA (0,255,0,255);
Texture2D tex= new Texture2D(16, 16, false, PixelFormat.Rgba);
tex.SetPixels(0, vBuffer);
[/code]

edit: again, how exactly did you format your first post?

[Psygnosis]

liquidwater91, when you want to insert program code into the body of your reply, click on the 5th icon on the toolbar just above the textbox you type your reply in (looks like a clipboard with a "C" on it) and then insert your code into the popup.

Like this:

10 PRINT "HELLO"
20 GOTO 10

[liquidwater91]

ah, thanks mate, i was wondering what people were doing, i always use quick reply.