libdragon
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Display Subsystem. More...
Defines | |
#define | NUM_BUFFERS 3 |
Maximum number of video backbuffers. | |
#define | REGISTER_BASE 0xA4400000 |
Register location in memory of VI. | |
#define | REGISTER_COUNT 14 |
Number of 32-bit registers at the register base. | |
#define | TV_TYPE_LOC 0x80000300 |
Memory location to read which determines the TV type. | |
#define | UNCACHED_ADDR(x) ((void *)(((uint32_t)(x)) | 0xA0000000)) |
Return the uncached memory address of a cached address. | |
#define | ALIGN_16BYTE(x) ((void *)(((uint32_t)(x)+15) & 0xFFFFFFF0)) |
Align a memory address to 16 byte offset. | |
Functions | |
static void | __write_registers (uint32_t const *const registers) |
Write a set of video registers to the VI. | |
static void | __write_dram_register (void const *const dram_val) |
Update the framebuffer pointer in the VI. | |
static void | __display_callback () |
Interrupt handler for vertical blank. | |
void | display_init (resolution_t res, bitdepth_t bit, uint32_t num_buffers, gamma_t gamma, antialias_t aa) |
Initialize the display to a particular resolution and bit depth. | |
void | display_init_ex (tvtype_t tv, resolution_t res, bitdepth_t bit, uint32_t num_buffers, gamma_t gamma, antialias_t aa) |
Initialize the display to a particular tv type, resolution, and bit depth. | |
void | display_close () |
Close the display. | |
display_context_t | display_lock () |
Lock a display buffer for rendering. | |
void | display_show (display_context_t disp) |
Display a previously locked buffer. | |
Variables | |
static void * | buffer [NUM_BUFFERS] |
Video buffer pointers. | |
uint32_t | __bitdepth |
Currently active bit depth. | |
uint32_t | __width |
Currently active video width (calculated) | |
uint32_t | __height |
Currently active video height (calculated) | |
uint32_t | __buffers = NUM_BUFFERS |
Number of active buffers. | |
void * | __safe_buffer [NUM_BUFFERS] |
Pointer to uncached 16-bit aligned version of buffers. | |
uint32_t | __registers [REGISTER_COUNT *2] |
Current VI register settings (for two fields) | |
static int | now_showing = -1 |
Currently displayed buffer. | |
static int | show_next = -1 |
Complete drawn buffer to display next. | |
static int | now_drawing = -1 |
Buffer currently being drawn on. |
Display Subsystem.