5 replies to this topic

[Horrowind]

Hello everybody.
What do the command Bdisp_WriteGraph_DDVRAM?

[vanhoa]

It draw a bitmap to screen and VRAM.

[Horrowind]

can you give me an example code?

[kucalc]

can you give me an example code?

Let me help you.

If you want graphics to be drawn really fast, you can use the Bdisp_WriteGraph_VRAM() function. Here's an example code that draws a #8 Pool Ball image very quickly:

/*
	Draws a #8 Pool Ball
	Demonstration
	Written by: kucalc
	Contact: <u title="Email protected, replace "  AT  " by "@"">kucalc[i]  AT  [/i]gmail.com</u>
*/

#include "fxlib.h"

int AddIn_main(int isAppli, unsigned short OptionNum)
{
	unsigned int key;
	DISPGRAPH picture;
	GRAPHDATA picture_info;

	unsigned long Image_C0[] = {0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x0000003F,0xFC000000,0x
00000000,0x00000000,0x000001FF,0xFFC00000,0x00000000,0x00000000,0x00000FFF,0xFFF
80000,0x00000000,0x00000000,0x000023FF,0xFFFE0000,0x00000000,0x00000000,0x0000CF
FF,0xFFFF8000,0x00000000,0x00000000,0x0003FFFF,0xFFFFC000,0x00000000,0x00000000,
0x0007FFFF,0xFFFFF000,0x00000000,0x00000000,0x000FFFFF,0xFFFFF800,0x00000000,0x0
0000000,0x001FFFFF,0xFFFFFC00,0x00000000,0x00000000,0x003F81FF,0xFFFFFE00,0x0000
0000,0x00000000,0x007C007F,0xFFFFFF00,0x00000000,0x00000000,0x00F8003F,0xFFFFFF8
0,0x00000000,0x00000000,0x01E0001F,0xFFFFFE40,0x00000000,0x00000000,0x03E0000F,0
xFFFFFD40,0x00000000,0x00000000,0x03C0600F,0xFFFFFCA0,0x00000000,0x00000000,0x07
808807,0xFFFFFE90,0x00000000,0x00000000,0x07810807,0xFFFFFFD0,0x00000000,0x00000
000,0x0F008807,0xFFFFFFF8,0x00000000,0x00000000,0x0F039007,0xFFFFFFF8,0x00000000
,0x00000000,0x1F042007,0xFFFFFFFC,0x00000000,0x00000000,0x1F0C2007,
	0xFFFFFFFC,0x00000000,0x00000000,0x3F081007,0xFFFFFFFC,0x00000000,0x0000000
0,0x3F041007,0xFFFFFFFE,0x00000000,0x00000000,0x3F06300F,0xFFFFFFFE,0x00000000,0
x00000000,0x3F00E00F,0xFFFFFFFE,0x00000000,0x00000000,0x7F00000F,0xFFFFFFFE,0x00
000000,0x00000000,0x7F80001F,0xFFFFFFFE,0x00000000,0x00000000,0x7F80003F,0xFFFFF
FFF,0x00000000,0x00000000,0x7FC0007F,0xFFFFFFFF,0x00000000,0x00000000,0x7FE000FF
,0xFFFFFFFF,0x00000000,0x00000000,0x7FF003FF,0xFFFFFFFF,0x00000000,0x00000000,0x
7FFE0FFF,0xFFFFFFFF,0x00000000,0x00000000,0x7FFFFFFF,0xFFFFFFFF,0x00000000,0x000
00000,0x7FFFFFFF,0xFFFFFFFF,0x00000000,0x00000000,0x7FFFFFFF,0xFFFFFFFF,0x000000
00,0x00000000,0x7FFFFFFF,0xFFFFFFFE,0x00000000,0x00000000,0x7FFFFFFF,0xFFFFFFFE,
0x00000000,0x00000000,0x3FFFFFFF,0xFFFFFFFE,0x00000000,0x00000000,0x3FFFFFFF,0xF
FFFFFFE,0x00000000,0x00000000,0x3FFFFFFF,0xFFFFFFFE,0x00000000,0x00000000,0x1FFF
FFFF,0xFFFFFFFC,0x00000000,0x00000000,0x17FFFFFF,0xFFFFFFFC,0x00000000,0x0000000
0,0x12FFFFFF,
	0xFFFFFFFC,0x00000000,0x00000000,0x0AFFFFFF,0xFFFFFFF8,0x00000000,0x0000000
0,0x097FFFFF,0xFFFFFFF8,0x00000000,0x00000000,0x05FFFFFF,0xFFFFFFF0,0x00000000,0
x00000000,0x06FFFFFF,0xFFFFFFF0,0x00000000,0x00000000,0x03FFFFFF,0xFFFFFFE0,0x00
000000,0x00000000,0x01FFFFFF,0xFFFFFFC0,0x00000000,0x00000000,0x01FFFFFF,0xFFFFF
FC0,0x00000000,0x00000000,0x00FFFFFF,0xFFFFFF80,0x00000000,0x00000000,0x007FFFFF
,0xFFFFFF00,0x00000000,0x00000000,0x003FFFFF,0xFFFFFE00,0x00000000,0x00000000,0x
001FFFFF,0xFFFFEC00,0x00000000,0x00000000,0x000FFFFF,0xFFFFD800,0x00000000,0x000
00000,0x0007FFFF,0xFFFF3000,0x00000000,0x00000000,0x0001FFFF,0xFFFFC000,0x000000
00,0x00000000,0x0000FFFF,0xFFFF8000,0x00000000,0x00000000,0x00003FFF,0xFFFE0000,
0x00000000,0x00000000,0x00000FFF,0xFFF80000,0x00000000,0x00000000,0x000001FF,0xF
FC00000,0x00000000,0x00000000,0x0000001F,0xFC000000,0x00000000,0x00000000,0x0000
0000,0x00000000,0x00000000};


	Bdisp_AllClr_DDVRAM();

	picture_info.width = 128;
	picture_info.height = 64;
	picture_info.pBitmap = (unsigned long*)Image_C0;
	picture.x = 0;
	picture.y = 0;
	picture.GraphData = picture_info;
	picture.WriteModify = IMB_WRITEMODIFY_NORMAL;
	picture.WriteKind = IMB_WRITEKIND_OR;
	Bdisp_WriteGraph_VRAM(&picture);
	Bdisp_PutDisp_DD();

	while(1){
		GetKey(&key);
	}
	return 1;
}

#pragma section _BR_Size
unsigned long BR_Size;
#pragma section


#pragma section _TOP

int InitializeSystem(int isAppli, unsigned short OptionNum)
{
	return INIT_ADDIN_APPLICATION(isAppli, OptionNum);
}

#pragma section

Where it says unsigned long Image_C0[] = ... is where the image data is stored. I didn't write all the image data by hand, I used a utility to convert a BMP to a C array (source code): http://www.ticalc.or.../180/18067.html. Using that utility (TI Paint Plus), go to MS Paint and draw up a 128x64 image (or you can choose you own dimensions, but as for an example...). Run TI Paint Plus, and in the first tab, look where it says, Taille de l'image and in the scroll down select Personnalise. Then where it says Largeur and Hauteur, type in 128 in the first and 64 in the second box (or whatever dimension the picture is). Next, click on Ouvrir and then select your BMP file. After that, you would then click on the second tab: Enregistrer, and then click on the Enregistrer button. A File window will pop up telling you where to save the file. Before you save, select Sprite (Language C) where it says Save as type:. Now you can save the file and once it's saved, you can just open the file and copy&paste the code into your own source code.

Going back to the source code, look where it says:

DISPGRAPH picture;
GRAPHDATA picture_info;

This defines the structures you need to draw a sprite.

picture_info.width = 128;
picture_info.height = 64;
picture_info.pBitmap = (unsigned long*)Image_C0;
picture.x = 0;
picture.y = 0;

This is how you change the dimensions and the location of the image.

picture.GraphData = picture_info;
picture.WriteModify = IMB_WRITEMODIFY_NORMAL;
picture.WriteKind = IMB_WRITEKIND_OR;
Bdisp_WriteGraph_VRAM(&picture);
Bdisp_PutDisp_DD();

This is how you can change the properties of a sprite. Remember to always call Bdisp_PutDisp_DD() after using a function that draw to the V(ideo)RAM. This copies the VRAM to the DD(Display Driver) or the LCD.

Hope this helps.

If you need more help contact me at kucalc AT gmail.com, or on MSN at kucalc AT hotmail.com.

[Horrowind]

This help a lot.

I will try it now... and then nobody can stop me
hehehehe

[kucalc]

That's good to hear, remember to email for help if you need it.