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Starting to work on a more complete video driver.
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Darren Alton committed Jul 2, 2008
1 parent 8222488 commit 3e37058
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Showing 3 changed files with 96 additions and 76 deletions.
168 changes: 94 additions & 74 deletions src/video/nds/SDL_ndsrender.c
View file
Expand Up @@ -34,20 +34,51 @@

/* SDL surface based renderer implementation */

static SDL_Renderer *SDL_NDS_CreateRenderer(SDL_Window * window,
Uint32 flags);
static int SDL_NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g,
static SDL_Renderer *NDS_CreateRenderer(SDL_Window * window, Uint32 flags);
static int NDS_ActivateRenderer(SDL_Renderer * renderer);
static int NDS_DisplayModeChanged(SDL_Renderer * renderer);
static int NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int NDS_QueryTexturePixels(SDL_Renderer * renderer,
SDL_Texture * texture, void **pixels,
int *pitch);
static int NDS_SetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors);
static int NDS_GetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture, SDL_Color * colors,
int firstcolor, int ncolors);
static int NDS_SetTextureColorMod(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_SetTextureAlphaMod(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_SetTextureBlendMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_SetTextureScaleMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
int pitch);
static int NDS_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch);
static void NDS_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void NDS_DirtyTexture(SDL_Renderer * renderer,
SDL_Texture * texture, int numrects,
const SDL_Rect * rects);
static int NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g,
Uint8 b, Uint8 a, const SDL_Rect * rect);
static int SDL_NDS_RenderCopy(SDL_Renderer * renderer,
static int NDS_RenderCopy(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_Rect * dstrect);
static void SDL_NDS_RenderPresent(SDL_Renderer * renderer);
static void SDL_NDS_DestroyRenderer(SDL_Renderer * renderer);
static void NDS_RenderPresent(SDL_Renderer * renderer);
static void NDS_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void NDS_DestroyRenderer(SDL_Renderer * renderer);


SDL_RenderDriver SDL_NDS_RenderDriver = {
SDL_NDS_CreateRenderer,
SDL_RenderDriver NDS_RenderDriver = {
NDS_CreateRenderer,
{"nds", SDL_RENDERER_PRESENTCOPY}
/* (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
Expand All @@ -57,9 +88,8 @@ SDL_RenderDriver SDL_NDS_RenderDriver = {
typedef struct
{
int current_screen;
SDL_Surface *screens[3];
int ultimate_answer;
} SDL_NDS_RenderData;
u16* fb;
} NDS_RenderData;



Expand All @@ -81,8 +111,16 @@ void
sdlds_surf2vram(SDL_Surface * s)
{
if (s->w == 256) {
u16 tmpbuf[0x20000];
int i;

dmaCopy((u8 *) (s->pixels) + 156 * sizeof(u16),
VRAM_A, 256 * 192 * sizeof(u16));
tmpbuf, 256 * 192 * sizeof(u16));
/* hack to fix the pixel format until I figure out why BGR doesn't work */
for (i = 0; i < 256 * 192; ++i) {
tmpbuf[i] = sdlds_rgb2bgr(tmpbuf[i]);
}
dmaCopy(tmpbuf, VRAM_A, 256 * 192 * sizeof(u16));
}
}

Expand All @@ -108,25 +146,19 @@ sdlds_print_surface_info(SDL_Surface * s)


SDL_Renderer *
SDL_NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
{
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
SDL_DisplayMode *displayMode = &display->current_mode;
SDL_Renderer *renderer;
SDL_NDS_RenderData *data;
NDS_RenderData *data;
int i, n;
int bpp = 15;
Uint32 Rmask, Gmask, Bmask, Amask;
/* Uint32 Rmask = 0x7C00, Gmask = 0x03E0, Bmask = 0x001F, Amask = 0x8000;
Uint32 Rmask = 0x001F, Gmask = 0x03E0, Bmask = 0x7C00, Amask = 0x8000;
*/

#if 0
printf("SDL_NDS_CreateRenderer(window, 0x%x)\n", flags);
printf(" window: (%d,%d), %dx%d\n",
window->x, window->y, window->w, window->h);
#endif

/* hard coded this to BGR555 for now */
if (!SDL_PixelFormatEnumToMasks(SDL_PIXELFORMAT_BGR555, &bpp,
&Rmask, &Gmask, &Bmask, &Amask)) {
Expand All @@ -140,23 +172,23 @@ SDL_NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
return NULL;
}

data = (SDL_NDS_RenderData *) SDL_malloc(sizeof(*data));
data = (NDS_RenderData *) SDL_malloc(sizeof(*data));
if (!data) {
SDL_NDS_DestroyRenderer(renderer);
NDS_DestroyRenderer(renderer);
SDL_OutOfMemory();
return NULL;
}
SDL_zerop(data);

renderer->RenderFill = SDL_NDS_RenderFill;
renderer->RenderCopy = SDL_NDS_RenderCopy;
renderer->RenderPresent = SDL_NDS_RenderPresent;
renderer->DestroyRenderer = SDL_NDS_DestroyRenderer;
renderer->info.name = SDL_NDS_RenderDriver.info.name;
renderer->RenderFill = NDS_RenderFill;
renderer->RenderCopy = NDS_RenderCopy;
renderer->RenderPresent = NDS_RenderPresent;
renderer->DestroyRenderer = NDS_DestroyRenderer;
renderer->info.name = NDS_RenderDriver.info.name;
renderer->info.flags = 0;
renderer->window = window->id;
renderer->driverdata = data;
Setup_SoftwareRenderer(renderer);
Setup_SoftwareRenderer(renderer); /* TODO: well, "TODON'T" is more like it */

if (flags & SDL_RENDERER_PRESENTFLIP2) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
Expand All @@ -167,55 +199,51 @@ SDL_NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
} else {
renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
n = 1;
}
}/*
for (i = 0; i < n; ++i) {
data->screens[i] =
SDL_CreateRGBSurface(0, 256, 192, bpp, Rmask, Gmask, Bmask,
Amask);
if (!data->screens[i]) {
SDL_NDS_DestroyRenderer(renderer);
NDS_DestroyRenderer(renderer);
return NULL;
}
SDL_SetSurfacePalette(data->screens[i], display->palette);
sdlds_print_surface_info(data->screens[i]);
}
}*/

data->current_screen = 0;
data->ultimate_answer = 42;
data->fb = (u16*)0x06020000;

return renderer;
}

static int
SDL_NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
Uint8 a, const SDL_Rect * rect)
{
SDL_NDS_RenderData *data = (SDL_NDS_RenderData *) renderer->driverdata;
SDL_Surface *target = data->screens[data->current_screen];
Uint32 color;
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
SDL_Rect real_rect = *rect;

color = SDL_MapRGBA(target->format, r, g, b, a);

return SDL_FillRect(target, &real_rect, color);
u16 color;
int i, j;

color = RGB15(r>>3,g>>3,b>>3);
for (i = real_rect.x; i < real_rect.x+real_rect.w; ++i) {
for (j = real_rect.y; j < real_rect.y+real_rect.h; ++j) {
data->fb[(j + real_rect.y) * 256 + i + real_rect.x] =
0x8000 | color;
}
}
return 0;
}

static int
SDL_NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
{
SDL_NDS_RenderData *data = (SDL_NDS_RenderData *) renderer->driverdata;
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);

#if 0
printf("SDL_NDS_RenderCopy(renderer, texture, srcrect, dstrect)\n");
printf(" renderer: %s\n", renderer->info.name);
printf(" texture: %dx%d\n", texture->w, texture->h);
printf(" srcrect: (%d,%d), %dx%d\n", srcrect->x, srcrect->y, srcrect->w,
srcrect->h);
printf(" dstrect: (%d,%d), %dx%d\n", dstrect->x, dstrect->y, dstrect->w,
dstrect->h);
#endif
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_Surface *target = data->screens[data->current_screen];
void *pixels =
Expand All @@ -235,39 +263,31 @@ SDL_NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
sdlds_surf2vram(surface);
return SDL_LowerBlit(surface, &real_srcrect, target, &real_dstrect);
}
#if 0
#endif
/* copy it directly to vram */
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
sdlds_surf2vram(surface);
/*
int sx = srcrect->x, sy = srcrect->y, sw = srcrect->w, sh = srcrect->h;
int dx = dstrect->x, dy = dstrect->y, dw = dstrect->w, dh = dstrect->h;
int si, sj, di, dj;
for (sj = 0, dj = 0; sj < sh && dj < dh; ++sj, ++dj) {
for (si = 0, di = 0; si < sw && di < dw; ++si, ++di) {
VRAM_A[(dj + dy) * 256 + di + dx] =
((Uint16 *) surface->pixels)[(sj + sy) * (surface->w) + si +
data->fb[(dj + dy) * 256 + di + dx] = 0x8000 |
((u16 *) surface->pixels)[(sj + sy) * (surface->w) + si +
sx];
}
}
}*/
return 0;
#endif
}


static void
SDL_NDS_RenderPresent(SDL_Renderer * renderer)
NDS_RenderPresent(SDL_Renderer * renderer)
{
SDL_NDS_RenderData *data = (SDL_NDS_RenderData *) renderer->driverdata;
int i;
#if 0
printf("SDL_NDS_RenderPresent(renderer)\n");
printf(" renderer: %s\n", renderer->info.name);
#endif
/* Send the data to the display */
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
/* Send the data to the display TODO */

/* hack to fix the pixel format until I figure out why BGR doesn't work */
for (i = 0; i < 256 * 192; ++i) {
VRAM_A[i] = sdlds_rgb2bgr(VRAM_A[i]);
}
/* Update the flipping chain, if any */
if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
data->current_screen = (data->current_screen + 1) % 2;
Expand All @@ -277,19 +297,19 @@ SDL_NDS_RenderPresent(SDL_Renderer * renderer)
}

static void
SDL_NDS_DestroyRenderer(SDL_Renderer * renderer)
NDS_DestroyRenderer(SDL_Renderer * renderer)
{
SDL_NDS_RenderData *data = (SDL_NDS_RenderData *) renderer->driverdata;
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
int i;

printf("SDL_NDS_DestroyRenderer(renderer)\n");
printf("NDS_DestroyRenderer(renderer)\n");
printf(" renderer: %s\n", renderer->info.name);
if (data) {
for (i = 0; i < SDL_arraysize(data->screens); ++i) {
/*for (i = 0; i < SDL_arraysize(data->screens); ++i) {
if (data->screens[i]) {
SDL_FreeSurface(data->screens[i]);
}
}
}*/
SDL_free(data);
}
SDL_free(renderer);
Expand Down
2 changes: 1 addition & 1 deletion src/video/nds/SDL_ndsrender_c.h
View file
Expand Up @@ -23,6 +23,6 @@

/* SDL surface based renderer implementation */

extern SDL_RenderDriver SDL_NDS_RenderDriver;
extern SDL_RenderDriver NDS_RenderDriver;

/* vi: set ts=4 sw=4 expandtab: */
2 changes: 1 addition & 1 deletion src/video/nds/SDL_ndsvideo.c
View file
Expand Up @@ -121,7 +121,7 @@ NDS_VideoInit(_THIS)
mode.driverdata = NULL;

SDL_AddBasicVideoDisplay(&mode);
SDL_AddRenderDriver(0, &SDL_NDS_RenderDriver);
SDL_AddRenderDriver(0, &NDS_RenderDriver);

SDL_zero(mode);
SDL_AddDisplayMode(0, &mode);
Expand Down

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