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A3000/RO3 compatibility. Sprites need re-draw.

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Real hardware available - very little worked. Moving to mode 15
This commit is contained in:
stevenhowes
2021-03-26 20:10:17 +00:00
parent 5669084da9
commit 87d70bb986
8 changed files with 84 additions and 57 deletions
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c/Graphics
+36 -17
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@@ -7,7 +7,7 @@ extern _kernel_swi_regs inreg;
extern _kernel_swi_regs outreg;
extern unsigned char *buffer;
unsigned char screen = 1;
int screen = 1;
// Loads sprite file into buffer
void load_sprites(char* filename)
@@ -61,9 +61,30 @@ void load_sprites(char* filename)
void display_mode(int mode)
{
inreg.r[0] = 0;
inreg.r[1] = mode;
_kernel_swi(OS_ScreenMode,&inreg,&outreg);
int pitch;
int height=256; // TODO: This shouldn't be here!
// OS_ScreenMode doesn't seem to work in 3.10
inreg.r[0] = 22;
_kernel_swi(OS_WriteC,&inreg,&outreg);
inreg.r[0] = mode;
_kernel_swi(OS_WriteC,&inreg,&outreg);
// The SDL library does this if double buffering is enabled - seems
// to be what makes it work - although other examples dont have this
inreg.r[0] = -1;
inreg.r[1] = 6;
_kernel_swi(OS_ReadModeVariable, &inreg, &outreg);
pitch = outreg.r[2];
inreg.r[0] = 2; /* Screen area */
_kernel_swi(OS_ReadDynamicArea, &inreg, &outreg);
inreg.r[1] = (pitch * height * 2) - outreg.r[1];
if (_kernel_swi(OS_ChangeDynamicArea, &inreg, &outreg) != NULL)
{
printf("Couldn't OS_ChangeDynamicArea");
exit(0);
}
}
void draw_dotted_line(int x1,int y1,int x2,int y2)
@@ -157,23 +178,21 @@ void graphics_colour(int setcolour)
}
void screen_flipbuffer()
{
inreg.r[0] = 19;
_kernel_swi(OS_Byte,&inreg,&outreg);
/* inreg.r[0] = 114;
inreg.r[1] = 1;
// Hardware
inreg.r[0] = 113;
inreg.r[1] = screen+1;
_kernel_swi(OS_Byte,&inreg,&outreg);
inreg.r[0] = 113;
inreg.r[1] = screen;
screen ^= 1;
// Drivers
inreg.r[0] = 112;
inreg.r[1] = screen+1;
_kernel_swi(OS_Byte,&inreg,&outreg);
inreg.r[0] = 19;
_kernel_swi(OS_Byte,&inreg,&outreg);
screen++;
if(screen > 3)
screen = 1;
inreg.r[0] = 112;
inreg.r[1] = screen;
_kernel_swi(OS_Byte,&inreg,&outreg);*/
}
void screen_clear()