przem360 commented 2 years ago

Hi, I'm tinkering with MCUME_pico and one old emulator. My (basic) knowledge of C is not enough to implement existing (old) emulator code in MCUME. Author of emulator is using functions like putpixel() - in DOS version (I think from Allegro) or XPutPixel() - in Linux version to draw a representation of an LCD. Maybe I could get away with using putpixel() from graphics.h but than I have to send it somehow to MCUME functions (emu_DrawScreen() ?) Could I ask for some help, some good advice on how to go about it?

Jean-MarcHarvengt commented 2 years ago

I would add the put pixel functions in picoxxx.cpp (all emus have such a file with the main function) one for 8 and one for 16 bit.

void emu_drawPixel8(int x, int y, unsigned char color) { unsigned char linept = tft.getLineBuffer(y); linept[x] = color; }

void emu_drawPixel16(int x, int y, unsigned short color) { unsigned short linept = tft.getLineBuffer(y); linept[x] = color; }

and expose them in the emuapi.h

... after this function extern void * emu_LineBuffer(int line);

extern void emu_drawPixel8(int x, int y, unsigned char color); extern void emu_drawPixel16(int x, int y, unsigned short color);

where you use your putpixel

include "emuapi.h"

ifdef USE_VGA

define RGBVAL8(r,g,b) ( (((r>>5)&0x07)<<5) | (((g>>5)&0x07)<<2) | (((b>>6)&0x3)<<0) )

emu_drawPixel8(x,y, RGBVAL8(r,g,b))

else

define RGBVAL16(r,g,b) ( (((r>>3)&0x1f)<<11) | (((g>>2)&0x3f)<<5) | (((b>>3)&0x1f)<<0) )

emu_drawPixel16(x,y,RGBVAL16(r,g,b))

endif

Good luck.

J-M