Skip to content
This repository has been archived by the owner on Feb 11, 2021. It is now read-only.

Commit

Permalink
Beginnings of sprite support.
Browse files Browse the repository at this point in the history
  • Loading branch information
Darren Alton committed Aug 16, 2008
1 parent 69fd8a1 commit f388900
Showing 1 changed file with 80 additions and 72 deletions.
152 changes: 80 additions & 72 deletions src/video/nds/SDL_ndsrender.c
View file
Expand Up @@ -42,10 +42,10 @@
#define SPRITE_ANGLE_MASK 0x01FF

void
NDS_OAM_Update(tOAM *oam)
NDS_OAM_Update(tOAM *oam, int sub)
{
DC_FlushAll();
dmaCopyHalfWords(SPRITE_DMA_CHANNEL, oam->spriteBuffer, OAM,
dmaCopyHalfWords(SPRITE_DMA_CHANNEL, oam->spriteBuffer, sub?OAM_SUB:OAM,
SPRITE_COUNT * sizeof(SpriteEntry));
}

Expand All @@ -62,7 +62,7 @@ NDS_OAM_RotateSprite(SpriteRotation *spriteRotation, u16 angle)
}

void
NDS_OAM_Init(tOAM *oam)
NDS_OAM_Init(tOAM *oam, int sub)
{
int i;
for(i = 0; i < SPRITE_COUNT; i++) {
Expand All @@ -74,7 +74,7 @@ NDS_OAM_Init(tOAM *oam)
NDS_OAM_RotateSprite(&(oam->matrixBuffer[i]), 0);
}
swiWaitForVBlank();
NDS_OAM_Update(oam);
NDS_OAM_Update(oam, sub);
}

void
Expand Down Expand Up @@ -173,7 +173,7 @@ typedef struct
typedef struct
{
enum { NDSTX_BG, NDSTX_SPR } type; /* represented in a bg or sprite. */
int hw_index; /* sprite: index in the OAM. bg: 2 or 3. */
int hw_index; /* sprite: index in the OAM. / bg: 2 or 3. */
struct
{
int hdx, hdy, vdx, vdy; /* affine transformation, used for scaling. */
Expand Down Expand Up @@ -209,6 +209,11 @@ NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
case SDL_PIXELFORMAT_BGR555:
/* okay */
break;
case SDL_PIXELFORMAT_RGB555:
case SDL_PIXELFORMAT_RGB565:
case SDL_PIXELFORMAT_ARGB1555:
/* we'll take these too for now */
break;
default:
printf("DEBUG: wrong display format!\n");
break;
Expand Down Expand Up @@ -272,7 +277,8 @@ NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
data->bg = &BACKGROUND_SUB;
}
data->bg_taken[2] = data->bg_taken[3] = 0;
NDS_OAM_Init(&(data->oam_copy)); /* init sprites. */

NDS_OAM_Init(&(data->oam_copy), data->sub); /* init sprites. */

TRACE("-NDS_CreateRenderer\n");
return renderer;
Expand Down Expand Up @@ -313,30 +319,39 @@ NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
/* conditional statements on w/h to place it as bg/sprite
depending on which one it fits. */
if(texture->w <= 64 && texture->h <= 64) {
/* TODO: implement sprites similar to how BG's are.
they have a similar affine transformation matrix
(hdx,hdy,vdx,vdy) as the backgrounds, so it should
be similar enough to handle with the same driverdata. */
int whichspr = -1;
printf("Tried to make a sprite.\n");
txdat->type = NDSTX_SPR;
for(i = 0; i < SPRITE_COUNT; ++i) {
if(data->oam_copy.spriteBuffer[i].attribute[0] & ATTR0_DISABLED) {
whichspr = i;
break;
}
}
if(whichspr >= 0) {
SpriteEntry *sprent = &(data->oam_copy.spriteBuffer[whichspr]);

texture->driverdata = SDL_calloc(1, sizeof(NDS_TextureData));
txdat = (NDS_TextureData*)texture->driverdata;
if(!txdat) {
SDL_OutOfMemory();
return -1;
}

sprent->objMode = OBJMODE_BITMAP;
sprent->posX = 0; sprent->posY = 0;
sprent->colMode = OBJCOLOR_16; /* OBJCOLOR_256 for INDEX8 */
if(whichspr < MATRIX_COUNT) {
sprent->isRotoscale = 1;
sprent->rsMatrixIdx = whichspr;
}
}
} else if(texture->w <= 256 && texture->h <= 256) {
int whichbg = -1, base = 0;
if(!data->bg_taken[2]) {
whichbg = 2;
data->bg->bg2_rotation.xdx = 0x100;
data->bg->bg2_rotation.xdy = 0;
data->bg->bg2_rotation.ydx = 0;
data->bg->bg2_rotation.ydy = 0x100;
data->bg->bg2_rotation.centerX = 0;
data->bg->bg2_rotation.centerY = 0;
} else if(!data->bg_taken[3]) {
whichbg = 3;
data->bg->bg3_rotation.xdx = 0x100;
data->bg->bg3_rotation.xdy = 0;
data->bg->bg3_rotation.ydx = 0;
data->bg->bg3_rotation.ydy = 0x100;
data->bg->bg3_rotation.centerX = 0;
data->bg->bg3_rotation.centerY = 0;
base = 4;
}
if(whichbg >= 0) {
Expand All @@ -362,7 +377,7 @@ NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
txdat->hw_index = whichbg;
txdat->dim.hdx = 0x100; txdat->dim.hdy = 0;
txdat->dim.vdx = 0; txdat->dim.vdy = 0x100;
txdat->dim.pitch = 256 * ((bpp+1)/8);
txdat->dim.pitch = texture->w * ((bpp+1)/8);
txdat->dim.bpp = bpp;
txdat->vram_pixels = (u16*)(data->sub ?
BG_BMP_RAM_SUB(base) : BG_BMP_RAM(base));
Expand Down Expand Up @@ -405,18 +420,23 @@ NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
Uint8 *src, *dst;
int row; size_t length;
TRACE("+NDS_UpdateTexture\n");
if(!texture) { printf("OH BOY!!!\n"); return -1; }

txdat = (NDS_TextureData *) texture->driverdata;

src = (Uint8 *) pixels;
dst =
(Uint8 *) txdat->vram_pixels + rect->y * txdat->dim.pitch +
rect->x * ((txdat->dim.bpp+1)/8);
length = rect->w * ((txdat->dim.bpp+1)/8);
for (row = 0; row < rect->h; ++row) {
SDL_memcpy(dst, src, length);
src += pitch;
dst += txdat->dim.pitch;

if(rect->w == texture->w) {
dmaCopy(src, dst, length*rect->h);
} else {
for (row = 0; row < rect->h; ++row) {
dmaCopy(src, dst, length);
src += pitch;
dst += txdat->dim.pitch;
}
}

TRACE("-NDS_UpdateTexture\n");
Expand All @@ -429,17 +449,12 @@ NDS_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
int *pitch)
{
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
int i;
TRACE("+NDS_LockTexture\n");
if (markDirty) {
printf("wanted to mark dirty\n");
/* TODO: figure out how to handle this! */
/*SDL_AddDirtyRect(&txdat->dirty, rect);*/
}

*pixels = (void *) ((u8 *)txdat->vram_pixels + rect->y
* txdat->dim.pitch + rect->x * ((txdat->dim.bpp+1)/8));
*pitch = txdat->dim.pitch;

TRACE("-NDS_LockTexture\n");
return 0;
}
Expand All @@ -448,8 +463,6 @@ static void
NDS_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
TRACE("+NDS_UnlockTexture\n");
/* TODO: should I be doing something here, somehow, now that the pixels
should have been "written" between LockTexture and this? */
TRACE("-NDS_UnlockTexture\n");
}

Expand Down Expand Up @@ -499,16 +512,29 @@ NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,

TRACE("+NDS_RenderCopy\n");
if(txdat->type == NDSTX_BG) {
bg_rotation *tmpbg = (txdat->hw_index == 2) ?
bg_rotation *bgrot = (txdat->hw_index == 2) ?
&(data->bg->bg2_rotation) : &(data->bg->bg3_rotation);
tmpbg->xdx = txdat->dim.hdx;
tmpbg->xdy = txdat->dim.hdy;
tmpbg->ydx = txdat->dim.vdx;
tmpbg->ydy = txdat->dim.vdy;
tmpbg->centerX = 0;
tmpbg->centerY = 0;
bgrot->xdx = txdat->dim.hdx;
bgrot->xdy = txdat->dim.hdy;
bgrot->ydx = txdat->dim.vdx;
bgrot->ydy = txdat->dim.vdy;
bgrot->centerX = 0;
bgrot->centerY = 0;

data->bg->scroll[txdat->hw_index].x = dstrect->x;
data->bg->scroll[txdat->hw_index].y = dstrect->y;
} else {
/* sprites not implemented yet */
/* sprites not fully implemented yet */
SpriteEntry *spr = &(data->oam_copy.spriteBuffer[txdat->hw_index]);
spr->posX = dstrect->x;
spr->posY = dstrect->y;
if(txdat->hw_index < MATRIX_COUNT) {
SpriteRotation *sprot = &(data->oam_copy.matrixBuffer[txdat->hw_index]);
sprot->hdx = txdat->dim.hdx;
sprot->hdy = txdat->dim.hdy;
sprot->vdx = txdat->dim.vdx;
sprot->vdy = txdat->dim.vdy;
}
printf("tried to RenderCopy a sprite.\n");
}
TRACE("-NDS_RenderCopy\n");
Expand All @@ -523,19 +549,10 @@ NDS_RenderPresent(SDL_Renderer * renderer)
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
int i;
TRACE("+NDS_RenderPresent\n");

{
SDL_Texture * tx = display->textures[i];
NDS_TextureData * txdat = (NDS_TextureData*)tx->driverdata;
/* Send the data to the display TODO :
shouldn't it already be there at this point? from lock/unlock
giving it the direct address in VRAM of the bg's.
I guess set the BG's and sprites "visible" flags here,
if applicable. */
}

TRACE("+NDS_RenderPresent\n");
/* update sprites */
NDS_OAM_Update(&(data->oam_copy), data->sub);
/* vsync for NDS */
if (renderer->info.flags & SDL_RENDERER_PRESENTVSYNC) {
swiWaitForVBlank();
Expand All @@ -547,14 +564,10 @@ static void
NDS_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
TRACE("+NDS_DestroyTexture\n");
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("Unsupported texture format");
} else {
/* free anything else allocated for texture */
NDS_TextureData *txdat = texture->driverdata;
/*SDL_FreeDirtyRects(&txdat->dirty);*/
SDL_free(txdat);
}
/* free anything else allocated for texture */
NDS_TextureData *txdat = texture->driverdata;
/*SDL_FreeDirtyRects(&txdat->dirty);*/
SDL_free(txdat);
TRACE("-NDS_DestroyTexture\n");
}

Expand All @@ -569,20 +582,15 @@ NDS_DestroyRenderer(SDL_Renderer * renderer)
TRACE("+NDS_DestroyRenderer\n");
if (data) {
/* TODO: free anything else relevant. */
/*for (i = 0; i < SDL_arraysize(data->texture); ++i) {
if (data->texture[i]) {
DestroyTexture(data->renderer, data->texture[i]);
}
}
if (data->surface.format) {
/*if (data->surface.format) {
SDL_SetSurfacePalette(&data->surface, NULL);
SDL_FreeFormat(data->surface.format);
}
if (display->palette) {
SDL_DelPaletteWatch(display->palette, DisplayPaletteChanged,
data);
}
SDL_FreeDirtyRects(&data->dirty);*/
}*/
/*SDL_FreeDirtyRects(&data->dirty);*/
SDL_free(data);
}
SDL_free(renderer);
Expand Down

0 comments on commit f388900

Please sign in to comment.