Pixel_Graphics_Functions

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Pixel Graphics Functions 

   The Pixel Graphics functions allow the HuC programmer to plot pixels
   directly to the screen.  However, bear in mind that these functions
   are slow and are not suited for applications where high performance
   is required.

gfx_setbgpal

void gfx_setbgpal(char bgcolor);
[ 3.04+ ]

    Set default BG palette group to bgcolor.
    Used by gfx_init().

    Example: 'gfx_setbgpal(5)' before gfx_init() will cause the gfx_*()
             functions to use the BG palette entries from $50 through $5F


gfx_init

void gfx_init(int vaddr);
[ 3.04+ ]

    Initialize screen to point to sequential graphics tiles, located
    starting at address 'vaddr' in VRAM.


gfx_clear

void gfx_clear(int vaddr);
[ 3.04+ ]

    Clear graphical screen.
    Starting at address 'vaddr' in VRAM, this function sets sequential
    tiles in VRAM to all zeroes, with a size based on the virtual map.


gfx_plot

void gfx_plot(int x, int y, int color);
[ 3.04+ ]

    Set a pixel at (x,y) to color listed.
    'color' should be avalue between 0 and 15.


gfx_point

char gfx_point(int x, int y);
[ 3.04+ ]

    Return the color of the pixel at (x,y).


gfx_line

void gfx_line(int x1, int y1, int x2, int y2, int color);
[ 3.11+ ]

    Draw a line from (x1,y1) to (x2,y2) in color listed.
    'color' should be avalue between 0 and 15.
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