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erc-c/include/vm_screen.h
2017-12-06 21:37:14 -06:00

28 lines
783 B
C

#ifndef _VM_SCREEN_H_
#define _VM_SCREEN_H_
/*
* If you just want to plot a single pixel, you can use this macro to
* abstract away the need to indicate the x/y dimensions (as those must
* necessarily be 1x1).
*/
#define vm_screen_draw_pixel(context, xpos, ypos) \
vm_screen_draw_rect(context, xpos, ypos, 1, 1)
typedef struct {
/*
* These form the components of an RGBA composite color.
*/
int color_red;
int color_green;
int color_blue;
int color_alpha;
} vm_screen_context;
extern void vm_screen_draw_rect(vm_screen_context *, int, int, int, int);
extern void vm_screen_free_context(vm_screen_context *);
extern vm_screen_context *vm_screen_new_context();
extern void vm_screen_set_color(vm_screen_context *, int, int, int, int);
#endif