darnit_render.h

• DARNIT_RENDER_LOGIC_OP - Set a logic function that is applied when rendering to the framebuffer
• DARNIT_RENDER_SCALE - Set how tilesheets are interpolated when stretched.
• DARNIT_TILESHEET - Functions for handling tilesheets
• DARNIT_TILE - Functions for rendering tiles (quads)
• DARNIT_LINE - Functions for rendering lines
• DARNIT_CIRCLE - Functions for rendering circles
• DARNIT_RECT - Functions for rendering filled solid-color rectangles.
• DARNIT_RENDER - General functions not specific to any special kind of rendering.

DARNIT_RENDER_LOGIC_OP

Used with d_render_logic_op to wrap glLogicOp.

typedef enum {
        DARNIT_RENDER_LOGIC_OP_NONE     = 0,
        DARNIT_RENDER_LOGIC_OP_AND      = 1,
        DARNIT_RENDER_LOGIC_OP_NAND     = 2,
        DARNIT_RENDER_LOGIC_OP_OR       = 3,
        DARNIT_RENDER_LOGIC_OP_NOR      = 4,
        DARNIT_RENDER_LOGIC_OP_XOR      = 5,
} DARNIT_RENDER_LOGIC_OP;

• void d_render_logic_op(DARNIT_RENDER_LOGIC_OP logicop);

DARNIT_RENDER_SCALE

Used with d_render_tilesheet_scale_algorithm to change how a tilesheet is interpolated if it's stretched when rendered. Default is DARNIT_SCALE_NEAREST.

typedef enum {
        DARNIT_SCALE_NEAREST            = 1,
        DARNIT_SCALE_LINEAR             = 2,
} DARNIT_RENDER_SCALE;

DARNIT_TILESHEET

A DARNIT_TILESHEET is a texture with a virtual tile grid applied over it. Tilesheets are memory managed, if you load the same tilesheet several time, only one copy is present in memory. While this saves VRAM, it also means that if you apply an animation to it or update a region of it with new pixel data, it affects everything that uses the tilesheet. Changes persists until everything that uses it has been unloaded, then the tilesheet itself is unloaded too.

• DARNIT_TILESHEET *d_render_tilesheet_load(const char *fname, unsigned int wsq, unsigned int hsq, DARNIT_PFORMAT target_format);
• DARNIT_TILESHEET *d_render_tilesheet_new(int tiles_w, int tiles_h, int tile_w, int tile_h, DARNIT_PFORMAT format);
• DARNIT_TILESHEET *d_render_tilesheet_isom_load(const char *fname, unsigned int wsq, unsigned int hsq, DARNIT_PFORMAT target_format);
• void d_render_tilesheet_update(DARNIT_TILESHEET *tilesheet, int sheet_x, int sheet_y, int change_w, int change_h, void *data);
• void d_render_tilesheet_geometrics(DARNIT_TILESHEET *tilesheet, int *w, int *h, int *tile_w, int *tile_h);
• DARNIT_TILESHEET *d_render_tilesheet_free(DARNIT_TILESHEET *tilesheet);
• int d_render_tilesheet_animation_apply(DARNIT_TILESHEET *tilesheet, const char *fname);
• void d_render_tilesheet_animate(DARNIT_TILESHEET *tilesheet);
• void d_render_tilesheet_scale_algorithm(DARNIT_TILESHEET *tilesheet, DARNIT_RENDER_SCALE scaling);

DARNIT_TILE

• void d_render_tile_init(DARNIT_TILE *buf, unsigned int tile, unsigned int tile_ts, int x, int y);
• void d_render_tile_move(DARNIT_TILE *tile_p, unsigned int tile, int x, int y);
• void d_render_tile_tilesheet_coord_set(DARNIT_TILE *tile_p, unsigned int tile, unsigned int x, unsigned int y, unsigned int w, unsigned int h);
• void d_render_tile_size_set(DARNIT_TILE *buf, unsigned int tile, int w, int h);
• void d_render_tile_set(DARNIT_TILE *tile_p, unsigned int tile, unsigned int tile_ts);
• void d_render_tile_tilesheet(DARNIT_TILE *tile_p, DARNIT_TILESHEET *tilesheet);
• void d_render_tile_clear(DARNIT_TILE *tile_p, unsigned int tile);
• void d_render_tile_draw(DARNIT_TILE *tile_p, unsigned int tiles);
• DARNIT_TILE *d_render_tile_new(unsigned int tiles, DARNIT_TILESHEET *tilesheet);
• DARNIT_TILE *d_render_tile_free(DARNIT_TILE *tile_p);

DARNIT_LINE

• DARNIT_LINE *d_render_line_new(unsigned int lines, unsigned int line_w);
• void d_render_line_move(DARNIT_LINE *line_p, unsigned int line, int x1, int y1, int x2, int y2);
• void d_render_line_draw(DARNIT_LINE *line_p, int lines);
• void d_render_line_get(DARNIT_LINE *buf, unsigned int line, int *x, int *y, int *x2, int *y2);
• DARNIT_LINE *d_render_line_free(DARNIT_LINE *line_p);

DARNIT_CIRCLE

• DARNIT_CIRCLE *d_render_circle_new(unsigned int lines, unsigned int line_w);
• void d_render_circle_move(DARNIT_CIRCLE *circle_p, int x, int y, int radius);
• void d_render_circle_draw(DARNIT_CIRCLE *circle_p);
• DARNIT_CIRCLE *d_render_circle_free(DARNIT_CIRCLE *circle_p);

DARNIT_RECT

• DARNIT_RECT *d_render_rect_new(unsigned int rects);
• void d_render_rect_move(DARNIT_RECT *rect_p, unsigned int rect, int x1, int y1, int x2, int y2);
• void d_render_rect_draw(DARNIT_RECT *rect_p, int rects);
• void d_render_rect_get(DARNIT_RECT *buf, unsigned int rect, int *x1, int *y1, int *x2, int *y2);
• DARNIT_RECT *d_render_rect_free(DARNIT_RECT *rect_p);

DARNIT_RENDER

• void d_render_begin();
• void d_render_end();
• void d_render_blend_enable();
• void d_render_blend_disable();
• void d_render_tint(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
• void d_render_tint_get(unsigned char *r, unsigned char *g, unsigned char *b, unsigned char *a);
• void d_render_clearcolor_set(unsigned char r, unsigned char g, unsigned char b);
• void d_render_offset(int x, int y);
• void d_render_fade_in(unsigned int time, unsigned char r, unsigned char g, unsigned char b);
• void d_render_fade_out(unsigned int time);
• int d_render_fade_status();
• void d_render_state_restore(); void d_render_tile_blit(void *tilesheet, unsigned int tile, int x, int y);