diff options
Diffstat (limited to 'src/renderer.c')
-rw-r--r-- | src/renderer.c | 26 |
1 files changed, 1 insertions, 25 deletions
diff --git a/src/renderer.c b/src/renderer.c index 500cc78..f950a4d 100644 --- a/src/renderer.c +++ b/src/renderer.c | |||
@@ -16,31 +16,7 @@ | |||
16 | // | 16 | // |
17 | 17 | ||
18 | #include "text.h" | 18 | #include "text.h" |
19 | 19 | #include "renderer.h" | |
20 | // The frontbuffer is located at the beginning of the VRAM, and requires 20KB of | ||
21 | // video memory for 32 * 20 tiles at 4bpp. | ||
22 | #define FRONTBUF ((u32*)(MEM_VRAM)) | ||
23 | |||
24 | // Adjust both of these if the location of the map changes. Each screnblock | ||
25 | // requires less than 2KB. | ||
26 | #define FRONTBUF_TILEMAP ((u16*)(MEM_VRAM + KB(20))) | ||
27 | #define FRONTBUF_SB 10 | ||
28 | |||
29 | // The backbuffer is located at the end of the VRAM. This can allow us to use | ||
30 | // more backgrounds but eats into the available memory for sprites. This should | ||
31 | // be fine for non sprite intensive applications. If more sprite memory is | ||
32 | // needed, the backbuffer can be located at the end of the background memory | ||
33 | // instead (64KB - 20KB). | ||
34 | #define BACKBUF ((u32*)(MEM_VRAM + KB(96) - KB(20))) | ||
35 | |||
36 | // The font data is located at the end of the frontbuffer memory, after the tile | ||
37 | // map and requires 8KB for 256 8x8 characters at 4bpp. This, along with the | ||
38 | // tilemap information allow us to store the frontbuffer and font for a text | ||
39 | // background in the first 2 charblocks (32KB). | ||
40 | #define FONT_DATA ((u32*)(MEM_VRAM + KB(22))) | ||
41 | #define FONT_TILEMAP ((u16*)(MEM_VRAM + KB(30))) | ||
42 | #define FONT_SB 15 | ||
43 | #define FONT_OFFSET 192 | ||
44 | 20 | ||
45 | // Keep track of which tiles need to be copied to the frontbuffer. | 21 | // Keep track of which tiles need to be copied to the frontbuffer. |
46 | static u32 dirty_tiles[21] = {0}; | 22 | static u32 dirty_tiles[21] = {0}; |