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beginning ppu

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This commit is contained in:
Samuel Walker
2025-02-01 00:48:49 -07:00
parent 5206c3871e
commit f4cbfd09c8
25 changed files with 683 additions and 43 deletions
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37
include/ppu.h
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@ -2,5 +2,40 @@
#include <common.h>
static const LINES_PER_FRAME = 154;
static const TICKS_PER_LINE = 456;
static const YRES = 144;
static const XRES = 160;
typedef struct {
u8 y;
u8 x;
u8 tile;
unsigned f_cgb_pn : 3;
unsigned f_cgb_vram_bank : 1;
unsigned f_pn : 1;
unsigned f_x_flip : 1;
unsigned f_y_flip : 1;
unsigned f_bgp : 1;
} oam_entry;
typedef struct {
oam_entry oam_ram[40];
u8 vram[0x2000];
u32 current_frame;
u32 line_ticks;
u32 *video_buffer;
} ppu_context;
void ppu_init();
void ppu_tick();
void ppu_tick();
void ppu_oam_write(u16 address, u8 value);
u8 ppu_oam_read(u16 address);
void ppu_vram_write(u16 address, u8 value);
u8 ppu_vram_read(u16 address);
ppu_context *ppu_get_context();