icculus/SDL-audio-capture: comparison src/video/nds/SDL

equal deleted inserted replaced

-:bc3e3e889f6d
+:4135aa9c5645
 Sam Lantinga
 slouken@libsdl.org
 */
 #include "SDL_config.h"
-/* Dummy SDL video driver implementation; this is just enough to make an
+/* SDL Nintendo DS video driver implementation
-*  SDL-based application THINK it's got a working video driver, for
+* based on dummy driver:
-*  applications that call SDL_Init(SDL_INIT_VIDEO) when they don't need it,
-*  and also for use as a collection of stubs when porting SDL to a new
-*  platform for which you haven't yet written a valid video driver.
-*
-* This is also a great way to determine bottlenecks: if you think that SDL
-*  is a performance problem for a given platform, enable this driver, and
-*  then see if your application runs faster without video overhead.
-*
 * Initial work by Ryan C. Gordon (icculus@icculus.org). A good portion
 *  of this was cut-and-pasted from Stephane Peter's work in the AAlib
 *  SDL video driver.  Renamed to "DUMMY" by Sam Lantinga.
 */
 #include <stdio.h>
 #include <stdlib.h>
 #include <nds.h>
+#include <nds/arm9/sprite.h>
+#include <nds/arm9/trig_lut.h>
+#include <nds/arm9/video.h>
 #include "SDL_video.h"
 #include "SDL_mouse.h"
 #include "../SDL_sysvideo.h"
 #include "../SDL_pixels_c.h"
 /* Initialization/Query functions */
 static int NDS_VideoInit(_THIS);
 static int NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode);
 static void NDS_VideoQuit(_THIS);
-/* DUMMY driver bootstrap functions */
+/* NDS sprite-related functions */
+#define SPRITE_DMA_CHANNEL 3
+#define SPRITE_ANGLE_MASK 0x01FF
+void
+NDS_OAM_Update(tOAM *oam)
+{
+DC_FlushAll();
+dmaCopyHalfWords(SPRITE_DMA_CHANNEL, oam->spriteBuffer, OAM,
+SPRITE_COUNT * sizeof(SpriteEntry));
+}
+void
+NDS_OAM_RotateSprite(SpriteRotation *spriteRotation, u16 angle)
+{
+s16 s = SIN[angle & SPRITE_ANGLE_MASK] >> 4;
+s16 c = COS[angle & SPRITE_ANGLE_MASK] >> 4;
+spriteRotation->hdx = c;
+spriteRotation->hdy = s;
+spriteRotation->vdx = -s;
+spriteRotation->vdy = c;
+}
+void
+NDS_OAM_Init(tOAM *oam)
+{
+int i;
+for(i = 0; i < SPRITE_COUNT; i++) {
+oam->spriteBuffer[i].attribute[0] = ATTR0_DISABLED;
+oam->spriteBuffer[i].attribute[1] = 0;
+oam->spriteBuffer[i].attribute[2] = 0;
+}
+for(i = 0; i < MATRIX_COUNT; i++) {
+NDS_OAM_RotateSprite(&(oam->matrixBuffer[i]), 0);
+}
+swiWaitForVBlank();
+NDS_OAM_Update(oam);
+}
+void
+NDS_OAM_HideSprite(SpriteEntry *spriteEntry)
+{
+spriteEntry->isRotoscale = 0;
+spriteEntry->isHidden = 1;
+}
+void
+NDS_OAM_ShowSprite(SpriteEntry *spriteEntry, int affine, int double_bound)
+{
+if (affine) {
+spriteEntry->isRotoscale = 1;
+spriteEntry->rsDouble = double_bound;
+} else {
+spriteEntry->isHidden = 0;
+}
+}
+/* SDL NDS driver bootstrap functions */
 static int
 NDS_Available(void)
 {
-const char *envr = SDL_getenv("SDL_VIDEODRIVER");
+/*const char *envr = SDL_getenv("SDL_VIDEODRIVER");*/
 /*printf("NDS_Available()\n"); */
 return (1);
 }
 static void
 NDS_CreateDevice(int devindex)
 {
 SDL_VideoDevice *device;
 /*printf("NDS_CreateDevice(%d)\n", devindex); */
+printf("+NDS_CreateDevice\n");
 /* Initialize all variables that we clean on shutdown */
 device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
 if (!device) {
 SDL_OutOfMemory();
 if (device) {
 device->num_displays = 2;   /* DS = dual screens */
 device->free = NDS_DeleteDevice;
+printf("-NDS_CreateDevice\n");
 return device;
 }
 VideoBootStrap NDS_bootstrap = {
 NDSVID_DRIVER_NAME, "SDL NDS video driver",
 NDS_VideoInit(_THIS)
 {
 SDL_DisplayMode mode;
 int i;
-/* simple 256x192x15x60 for now */
+printf("+NDS_VideoInit\n");
+/* simple 256x192x16x60 for now */
 mode.w = 256;
 mode.h = 192;
 mode.format = SDL_PIXELFORMAT_ABGR1555;
 mode.refresh_rate = 60;
 mode.driverdata = NULL;
 SDL_zero(mode);
 SDL_AddDisplayMode(0, &mode);
 /* hackish stuff to get things up and running for now, and for a console */
-powerON(POWER_ALL);
+powerON(POWER_ALL_2D);
 irqInit();
 irqEnable(IRQ_VBLANK);
 NDS_SetDisplayMode(_this, &mode);
+printf("-NDS_VideoInit\n");
 return 0;
 }
 static int
 NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode)
 {
+printf("+NDS_SetDisplayMode\n");
 /* right now this function is just hard-coded for 256x192 ABGR1555 */
 videoSetMode(MODE_5_2D | DISPLAY_BG3_ACTIVE);       /* display on main core */
 videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE);    /* debug text on sub */
-vramSetMainBanks(VRAM_A_MAIN_BG_0x06000000, VRAM_B_LCD,
+vramSetMainBanks(VRAM_A_MAIN_BG_0x06000000, VRAM_B_MAIN_BG_0x06020000,
-VRAM_C_SUB_BG, VRAM_D_LCD);
+VRAM_C_SUB_BG_0x06200000,  VRAM_C_SUB_BG_0x06220000);
+vramSetBankE(VRAM_E_MAIN_SPRITE);
 /* set up console for debug text 'n stuff */
 SUB_BG0_CR = BG_MAP_BASE(31);
 BG_PALETTE_SUB[255] = RGB15(31, 31, 31);
+/* debugging purposes, uncomment this later.  then remove it & add 2screen.
 consoleInitDefault((u16 *) SCREEN_BASE_BLOCK_SUB(31),
-(u16 *) CHAR_BASE_BLOCK_SUB(0), 16);
+(u16 *) CHAR_BASE_BLOCK_SUB(0), 16);*/
+printf("-NDS_SetDisplayMode\n");
-#if 0
-/* we should be using this as a texture for rendering, not as a framebuffer */
-/* maps well to the 256x192 screen anyway.  note: need VRAM_B for bigger */
-BACKGROUND.control[3] = BG_BMP16_256x256;
-/* affine transformation matrix.  nothing too fancy here */
-BG3_XDX = 0x100;
-BG3_XDY = 0;
-BG3_YDX = 0;
-BG3_YDY = 0x100;
-/* x/y position */
-BG3_CX = 0;
-BG3_CY = 0;
-#endif
 return 0;
 }
 void
 NDS_VideoQuit(_THIS)
 {
+printf("+NDS_VideoQuit\n");
 videoSetMode(DISPLAY_SCREEN_OFF);
 videoSetModeSub(DISPLAY_SCREEN_OFF);
 vramSetMainBanks(VRAM_A_LCD, VRAM_B_LCD, VRAM_C_LCD, VRAM_D_LCD);
+printf("-NDS_VideoQuit\n");
 }
 /* vi: set ts=4 sw=4 expandtab: */

branch	gsoc2008_nds
changeset 2680	4135aa9c5645
parent 2679	bc3e3e889f6d
child 2681	c15b6c758be5