static int
DirectFB_SetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors)
{
DirectFB_TextureData *data = (DirectFB_TextureData *) texture->driverdata;
if (SDL_ISPIXELFORMAT_INDEXED(data->format)
&& !SDL_ISPIXELFORMAT_FOURCC(data->format)) {
DFBColor entries[256];
int i;
if (ncolors > 256)
ncolors = 256;
for (i = 0; i < ncolors; ++i) {
entries[i].r = colors[i].r;
entries[i].g = colors[i].g;
entries[i].b = colors[i].b;
entries[i].a = 0xff;
}
SDL_DFB_CHECKERR(data->
palette->SetEntries(data->palette, entries, ncolors, firstcolor));
return 0;
} else {
return SDL_SetError("YUV textures don't have a palette");
}
error:
return -1;
}
void
WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
{
SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
DWORD i;
SDL_DisplayMode mode;
for (i = 0;; ++i) {
if (!WIN_GetDisplayMode(_this, data->DeviceName, i, &mode)) {
break;
}
if (SDL_ISPIXELFORMAT_INDEXED(mode.format)) {
/* We don't support palettized modes now */
SDL_free(mode.driverdata);
continue;
}
if (mode.format != SDL_PIXELFORMAT_UNKNOWN) {
if (!SDL_AddDisplayMode(display, &mode)) {
SDL_free(mode.driverdata);
}
} else {
SDL_free(mode.driverdata);
}
}
}
static int
DirectFB_GetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture, SDL_Color * colors,
int firstcolor, int ncolors)
{
DirectFB_TextureData *data = (DirectFB_TextureData *) texture->driverdata;
if (SDL_ISPIXELFORMAT_INDEXED(data->format)
&& !SDL_ISPIXELFORMAT_FOURCC(data->format)) {
DFBColor entries[256];
int i;
SDL_DFB_CHECKERR(data->
palette->GetEntries(data->palette, entries, ncolors,
firstcolor));
for (i = 0; i < ncolors; ++i) {
colors[i].r = entries[i].r;
colors[i].g = entries[i].g;
colors[i].b = entries[i].b;
colors[i].a = SDL_ALPHA_OPAQUE;
}
return 0;
} else {
return SDL_SetError("YUV textures don't have a palette");
}
error:
return -1;
}
/*
* Create a surface on the stack for quick blit operations
*/
static SDL_INLINE SDL_bool
SDL_CreateSurfaceOnStack(int width, int height, Uint32 pixel_format,
void * pixels, int pitch, SDL_Surface * surface,
SDL_PixelFormat * format, SDL_BlitMap * blitmap)
{
if (SDL_ISPIXELFORMAT_INDEXED(pixel_format)) {
SDL_SetError("Indexed pixel formats not supported");
return SDL_FALSE;
}
if (SDL_InitFormat(format, pixel_format) < 0) {
return SDL_FALSE;
}
SDL_zerop(surface);
surface->flags = SDL_PREALLOC;
surface->format = format;
surface->pixels = pixels;
surface->w = width;
surface->h = height;
surface->pitch = pitch;
/* We don't actually need to set up the clip rect for our purposes */
/* SDL_SetClipRect(surface, NULL); */
/* Allocate an empty mapping */
SDL_zerop(blitmap);
blitmap->info.r = 0xFF;
blitmap->info.g = 0xFF;
blitmap->info.b = 0xFF;
blitmap->info.a = 0xFF;
surface->map = blitmap;
/* The surface is ready to go */
surface->refcount = 1;
return SDL_TRUE;
}
static SDL_bool
DDRAW_IsTextureFormatAvailable(IDirectDraw * ddraw, Uint32 display_format,
Uint32 texture_format)
{
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
if (SDL_ISPIXELFORMAT_FOURCC(texture_format)) {
//TODO I don't expect DDRAW to support all 4CC formats, but I don't know which ones
return SDL_TRUE;
}
//These are only basic checks
if (SDL_ISPIXELFORMAT_INDEXED(texture_format)) {
return SDL_FALSE;
}
if (!SDL_PixelFormatEnumToMasks
(texture_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
return SDL_FALSE;
}
switch (bpp) {
case 4:
case 8:
case 16:
case 24:
case 32:
break;
default:
return SDL_FALSE;
}
return SDL_TRUE;
}
/**
* This is a semi-private blit function and it performs low-level surface
* scaled blitting only.
*/
int
SDL_LowerBlitScaled(SDL_Surface * src, SDL_Rect * srcrect,
SDL_Surface * dst, SDL_Rect * dstrect)
{
static const Uint32 complex_copy_flags = (
SDL_COPY_MODULATE_COLOR | SDL_COPY_MODULATE_ALPHA |
SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD |
SDL_COPY_COLORKEY
);
/* Save off the original dst width, height */
int dstW = dstrect->w;
int dstH = dstrect->h;
SDL_Rect full_rect;
SDL_Rect final_dst = *dstrect;
SDL_Rect final_src = *srcrect;
/* Clip the dst surface to the dstrect */
full_rect.x = 0;
full_rect.y = 0;
full_rect.w = dst->w;
full_rect.h = dst->h;
if (!SDL_IntersectRect(&final_dst, &full_rect, &final_dst)) {
return 0;
}
/* Did the dst width change? */
if ( dstW != final_dst.w ) {
/* scale the src width appropriately */
final_src.w = final_src.w * dst->clip_rect.w / dstW;
}
/* Did the dst height change? */
if ( dstH != final_dst.h ) {
/* scale the src width appropriately */
final_src.h = final_src.h * dst->clip_rect.h / dstH;
}
/* Clip the src surface to the srcrect */
full_rect.x = 0;
full_rect.y = 0;
full_rect.w = src->w;
full_rect.h = src->h;
if (!SDL_IntersectRect(&final_src, &full_rect, &final_src)) {
return 0;
}
if (!(src->map->info.flags & SDL_COPY_NEAREST)) {
src->map->info.flags |= SDL_COPY_NEAREST;
SDL_InvalidateMap(src->map);
}
if ( !(src->map->info.flags & complex_copy_flags) &&
src->format->format == dst->format->format &&
!SDL_ISPIXELFORMAT_INDEXED(src->format->format) ) {
return SDL_SoftStretch( src, &final_src, dst, &final_dst );
} else {
return SDL_LowerBlit( src, &final_src, dst, &final_dst );
}
}
static SDL_bool
PixelFormatToDDPIXELFORMAT(Uint32 format, LPDDPIXELFORMAT dst)
{
SDL_zerop(dst);
dst->dwSize = sizeof(*dst);
if (SDL_ISPIXELFORMAT_FOURCC(format)) {
dst->dwFlags = DDPF_FOURCC;
dst->dwFourCC = format;
} else if (SDL_ISPIXELFORMAT_INDEXED(format)) {
SDL_SetError("Indexed pixelformats are not supported.");
return SDL_FALSE;
} else {
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
if (!SDL_PixelFormatEnumToMasks
(format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
SDL_SetError("pixelformat not supported");
return SDL_FALSE;
}
if (!Rmask && !Gmask && !Bmask) {
dst->dwFlags = DDPF_ALPHA;
dst->dwAlphaBitDepth = bpp;
} else {
dst->dwFlags = DDPF_RGB;
dst->dwRGBBitCount = bpp;
dst->dwRBitMask = Rmask;
dst->dwGBitMask = Gmask;
dst->dwBBitMask = Bmask;
if (Amask) {
dst->dwFlags |= DDPF_ALPHAPIXELS;
dst->dwRGBAlphaBitMask = Amask;
}
}
}
return SDL_TRUE;
}
/**
* This is a semi-private blit function and it performs low-level surface
* scaled blitting only.
*/
int
SDL_LowerBlitScaled(SDL_Surface * src, SDL_Rect * srcrect,
SDL_Surface * dst, SDL_Rect * dstrect)
{
static const Uint32 complex_copy_flags = (
SDL_COPY_MODULATE_COLOR | SDL_COPY_MODULATE_ALPHA |
SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD |
SDL_COPY_COLORKEY
);
if (!(src->map->info.flags & SDL_COPY_NEAREST)) {
src->map->info.flags |= SDL_COPY_NEAREST;
SDL_InvalidateMap(src->map);
}
if ( !(src->map->info.flags & complex_copy_flags) &&
src->format->format == dst->format->format &&
!SDL_ISPIXELFORMAT_INDEXED(src->format->format) ) {
return SDL_SoftStretch( src, srcrect, dst, dstrect );
} else {
return SDL_LowerBlit( src, srcrect, dst, dstrect );
}
}
/**
* This is a semi-private blit function and it performs low-level surface
* scaled blitting only.
*/
int
SDL_LowerBlitScaled(SDL_Surface * src, SDL_Rect * srcrect,
SDL_Surface * dst, SDL_Rect * dstrect)
{
/* Save off the original dst width, height */
int dstW = dstrect->w;
int dstH = dstrect->h;
SDL_Rect final_dst = *dstrect;
SDL_Rect final_src = *srcrect;
/* Clip the dst surface to the dstrect */
SDL_SetClipRect( dst, &final_dst );
/* Did the dst width change? */
if ( dstW != dst->clip_rect.w ) {
/* scale the src width appropriately */
final_src.w = final_src.w * dst->clip_rect.w / dstW;
}
/* Did the dst height change? */
if ( dstH != dst->clip_rect.h ) {
/* scale the src width appropriately */
final_src.h = final_src.h * dst->clip_rect.h / dstH;
}
/* Clip the src surface to the srcrect */
SDL_SetClipRect( src, &final_src );
src->map->info.flags |= SDL_COPY_NEAREST;
if ( src->format->format == dst->format->format && !SDL_ISPIXELFORMAT_INDEXED(src->format->format) ) {
return SDL_SoftStretch( src, &final_src, dst, &final_dst );
} else {
return SDL_LowerBlit( src, &final_src, dst, &final_dst );
}
}
SDL_Texture *
SDL_CreateTexture(SDL_Renderer * renderer, Uint32 format, int access, int w, int h)
{
SDL_Texture *texture;
CHECK_RENDERER_MAGIC(renderer, NULL);
if (!format) {
format = renderer->info.texture_formats[0];
}
if (SDL_ISPIXELFORMAT_INDEXED(format)) {
SDL_SetError("Palettized textures are not supported");
return NULL;
}
if (w <= 0 || h <= 0) {
SDL_SetError("Texture dimensions can't be 0");
return NULL;
}
texture = (SDL_Texture *) SDL_calloc(1, sizeof(*texture));
if (!texture) {
SDL_OutOfMemory();
return NULL;
}
texture->magic = &texture_magic;
texture->format = format;
texture->access = access;
texture->w = w;
texture->h = h;
texture->r = 255;
texture->g = 255;
texture->b = 255;
texture->a = 255;
texture->renderer = renderer;
texture->next = renderer->textures;
if (renderer->textures) {
renderer->textures->prev = texture;
}
renderer->textures = texture;
if (IsSupportedFormat(renderer, format)) {
if (renderer->CreateTexture(renderer, texture) < 0) {
SDL_DestroyTexture(texture);
return 0;
}
} else {
texture->native = SDL_CreateTexture(renderer,
GetClosestSupportedFormat(renderer, format),
access, w, h);
if (!texture->native) {
SDL_DestroyTexture(texture);
return NULL;
}
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
texture->yuv = SDL_SW_CreateYUVTexture(format, w, h);
if (!texture->yuv) {
SDL_DestroyTexture(texture);
return NULL;
}
} else if (access == SDL_TEXTUREACCESS_STREAMING) {
/* The pitch is 4 byte aligned */
texture->pitch = (((w * SDL_BYTESPERPIXEL(format)) + 3) & ~3);
texture->pixels = SDL_calloc(1, texture->pitch * h);
if (!texture->pixels) {
SDL_DestroyTexture(texture);
return NULL;
}
}
}
return texture;
}
static int
DirectFB_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
SDL_Window *window = renderer->window;
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DFB_DEVICEDATA(display->device);
DirectFB_TextureData *data;
DFBSurfaceDescription dsc;
DFBSurfacePixelFormat pixelformat;
DirectFB_ActivateRenderer(renderer);
SDL_DFB_ALLOC_CLEAR(data, sizeof(*data));
texture->driverdata = data;
/* find the right pixelformat */
pixelformat = DirectFB_SDLToDFBPixelFormat(texture->format);
if (pixelformat == DSPF_UNKNOWN) {
SDL_SetError("Unknown pixel format %d\n", data->format);
goto error;
}
data->format = texture->format;
data->pitch = texture->w * DFB_BYTES_PER_PIXEL(pixelformat);
if (DirectFB_AcquireVidLayer(renderer, texture) != 0) {
/* fill surface description */
dsc.flags =
DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
dsc.width = texture->w;
dsc.height = texture->h;
if(texture->format == SDL_PIXELFORMAT_YV12 ||
texture->format == SDL_PIXELFORMAT_IYUV) {
/* dfb has problems with odd sizes -make them even internally */
dsc.width += (dsc.width % 2);
dsc.height += (dsc.height % 2);
}
/* <1.2 Never use DSCAPS_VIDEOONLY here. It kills performance
* No DSCAPS_SYSTEMONLY either - let dfb decide
* 1.2: DSCAPS_SYSTEMONLY boosts performance by factor ~8
* Depends on other settings as well. Let dfb decide.
*/
dsc.caps = DSCAPS_PREMULTIPLIED;
#if 0
if (texture->access == SDL_TEXTUREACCESS_STREAMING)
dsc.caps |= DSCAPS_SYSTEMONLY;
else
dsc.caps |= DSCAPS_VIDEOONLY;
#endif
dsc.pixelformat = pixelformat;
data->pixels = NULL;
/* Create the surface */
SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc,
&data->surface));
if (SDL_ISPIXELFORMAT_INDEXED(data->format)
&& !SDL_ISPIXELFORMAT_FOURCC(data->format)) {
#if 1
SDL_DFB_CHECKERR(data->surface->GetPalette(data->surface, &data->palette));
#else
/* DFB has issues with blitting LUT8 surfaces.
* Creating a new palette does not help.
*/
DFBPaletteDescription pal_desc;
pal_desc.flags = DPDESC_SIZE; /* | DPDESC_ENTRIES */
pal_desc.size = 256;
SDL_DFB_CHECKERR(devdata->dfb->CreatePalette(devdata->dfb, &pal_desc,&data->palette));
SDL_DFB_CHECKERR(data->surface->SetPalette(data->surface, data->palette));
#endif
}
}
#if (DFB_VERSION_ATLEAST(1,2,0))
data->render_options = DSRO_NONE;
#endif
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
/* 3 plane YUVs return 1 bpp, but we need more space for other planes */
if(texture->format == SDL_PIXELFORMAT_YV12 ||
texture->format == SDL_PIXELFORMAT_IYUV) {
SDL_DFB_ALLOC_CLEAR(data->pixels, (texture->h * data->pitch + ((texture->h + texture->h % 2) * (data->pitch + data->pitch % 2) * 2) / 4));
} else {
SDL_DFB_ALLOC_CLEAR(data->pixels, texture->h * data->pitch);
}
}
return 0;
error:
SDL_DFB_RELEASE(data->palette);
SDL_DFB_RELEASE(data->surface);
SDL_DFB_FREE(texture->driverdata);
return -1;
}
/*
* Create an empty RGB surface of the appropriate depth
*/
SDL_Surface *
SDL_CreateRGBSurface(Uint32 flags,
int width, int height, int depth,
Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
{
SDL_Surface *surface;
Uint32 format;
/* The flags are no longer used, make the compiler happy */
(void)flags;
/* Get the pixel format */
format = SDL_MasksToPixelFormatEnum(depth, Rmask, Gmask, Bmask, Amask);
if (format == SDL_PIXELFORMAT_UNKNOWN) {
SDL_SetError("Unknown pixel format");
return NULL;
}
/* Allocate the surface */
surface = (SDL_Surface *) SDL_calloc(1, sizeof(*surface));
if (surface == NULL) {
SDL_OutOfMemory();
return NULL;
}
surface->format = SDL_AllocFormat(format);
if (!surface->format) {
SDL_FreeSurface(surface);
return NULL;
}
surface->w = width;
surface->h = height;
surface->pitch = SDL_CalculatePitch(surface);
SDL_SetClipRect(surface, NULL);
if (SDL_ISPIXELFORMAT_INDEXED(surface->format->format)) {
SDL_Palette *palette =
SDL_AllocPalette((1 << surface->format->BitsPerPixel));
if (!palette) {
SDL_FreeSurface(surface);
return NULL;
}
if (palette->ncolors == 2) {
/* Create a black and white bitmap palette */
palette->colors[0].r = 0xFF;
palette->colors[0].g = 0xFF;
palette->colors[0].b = 0xFF;
palette->colors[1].r = 0x00;
palette->colors[1].g = 0x00;
palette->colors[1].b = 0x00;
}
SDL_SetSurfacePalette(surface, palette);
SDL_FreePalette(palette);
}
/* Get the pixels */
if (surface->w && surface->h) {
surface->pixels = SDL_malloc(surface->h * surface->pitch);
if (!surface->pixels) {
SDL_FreeSurface(surface);
SDL_OutOfMemory();
return NULL;
}
/* This is important for bitmaps */
SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
}
/* Allocate an empty mapping */
surface->map = SDL_AllocBlitMap();
if (!surface->map) {
SDL_FreeSurface(surface);
return NULL;
}
/* By default surface with an alpha mask are set up for blending */
if (Amask) {
SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_BLEND);
}
/* The surface is ready to go */
surface->refcount = 1;
return surface;
}
static HBITMAP
GDI_CreateDIBSection(HDC hdc, int w, int h, int pitch, Uint32 format,
HPALETTE * hpal, void ** pixels)
{
int bmi_size;
LPBITMAPINFO bmi;
bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
if (!bmi) {
SDL_OutOfMemory();
return NULL;
}
bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi->bmiHeader.biWidth = w;
bmi->bmiHeader.biHeight = -h; /* topdown bitmap */
bmi->bmiHeader.biPlanes = 1;
bmi->bmiHeader.biSizeImage = h * pitch;
bmi->bmiHeader.biXPelsPerMeter = 0;
bmi->bmiHeader.biYPelsPerMeter = 0;
bmi->bmiHeader.biClrUsed = 0;
bmi->bmiHeader.biClrImportant = 0;
bmi->bmiHeader.biBitCount = SDL_BYTESPERPIXEL(format) * 8;
if (SDL_ISPIXELFORMAT_INDEXED(format)) {
bmi->bmiHeader.biCompression = BI_RGB;
if (hpal) {
int i, ncolors;
LOGPALETTE *palette;
ncolors = (1 << SDL_BITSPERPIXEL(format));
palette =
(LOGPALETTE *) SDL_malloc(sizeof(*palette) +
ncolors * sizeof(PALETTEENTRY));
if (!palette) {
SDL_free(bmi);
SDL_OutOfMemory();
return NULL;
}
palette->palVersion = 0x300;
palette->palNumEntries = ncolors;
for (i = 0; i < ncolors; ++i) {
palette->palPalEntry[i].peRed = 0xFF;
palette->palPalEntry[i].peGreen = 0xFF;
palette->palPalEntry[i].peBlue = 0xFF;
palette->palPalEntry[i].peFlags = 0;
}
*hpal = CreatePalette(palette);
SDL_free(palette);
}
} else {
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
bmi->bmiHeader.biCompression = BI_BITFIELDS;
SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask,
&Amask);
((Uint32 *) bmi->bmiColors)[0] = Rmask;
((Uint32 *) bmi->bmiColors)[1] = Gmask;
((Uint32 *) bmi->bmiColors)[2] = Bmask;
if (hpal) {
*hpal = NULL;
}
}
return CreateDIBSection(hdc, bmi, DIB_RGB_COLORS, pixels, NULL, 0);
}
/*
* Create an empty RGB surface of the appropriate depth using the given
* enum SDL_PIXELFORMAT_* format
*/
SDL_Surface *
SDL_CreateRGBSurfaceWithFormat(Uint32 flags, int width, int height, int depth,
Uint32 format)
{
SDL_Surface *surface;
/* The flags are no longer used, make the compiler happy */
(void)flags;
/* Allocate the surface */
surface = (SDL_Surface *) SDL_calloc(1, sizeof(*surface));
if (surface == NULL) {
SDL_OutOfMemory();
return NULL;
}
surface->format = SDL_AllocFormat(format);
if (!surface->format) {
SDL_FreeSurface(surface);
return NULL;
}
surface->w = width;
surface->h = height;
surface->pitch = SDL_CalculatePitch(format, width);
SDL_SetClipRect(surface, NULL);
if (SDL_ISPIXELFORMAT_INDEXED(surface->format->format)) {
SDL_Palette *palette =
SDL_AllocPalette((1 << surface->format->BitsPerPixel));
if (!palette) {
SDL_FreeSurface(surface);
return NULL;
}
if (palette->ncolors == 2) {
/* Create a black and white bitmap palette */
palette->colors[0].r = 0xFF;
palette->colors[0].g = 0xFF;
palette->colors[0].b = 0xFF;
palette->colors[1].r = 0x00;
palette->colors[1].g = 0x00;
palette->colors[1].b = 0x00;
}
SDL_SetSurfacePalette(surface, palette);
SDL_FreePalette(palette);
}
/* Get the pixels */
if (surface->w && surface->h) {
/* Assumptions checked in surface_size_assumptions assert above */
Sint64 size = ((Sint64)surface->h * surface->pitch);
if (size < 0 || size > SDL_MAX_SINT32) {
/* Overflow... */
SDL_FreeSurface(surface);
SDL_OutOfMemory();
return NULL;
}
surface->pixels = SDL_malloc((size_t)size);
if (!surface->pixels) {
SDL_FreeSurface(surface);
SDL_OutOfMemory();
return NULL;
}
/* This is important for bitmaps */
SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
}
/* Allocate an empty mapping */
surface->map = SDL_AllocBlitMap();
if (!surface->map) {
SDL_FreeSurface(surface);
return NULL;
}
/* By default surface with an alpha mask are set up for blending */
if (surface->format->Amask) {
SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_BLEND);
}
/* The surface is ready to go */
surface->refcount = 1;
return surface;
}
static int
DirectFB_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
SDL_DFB_DEVICEDATA(display->device);
DirectFB_TextureData *data;
DFBResult ret;
DFBSurfaceDescription dsc;
SDL_DFB_CALLOC(data, 1, sizeof(*data));
texture->driverdata = data;
data->format = texture->format;
data->pitch = (texture->w * SDL_BYTESPERPIXEL(data->format));
if (DirectFB_AcquireVidLayer(renderer, texture) != 0) {
/* fill surface description */
dsc.flags =
DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
dsc.width = texture->w;
dsc.height = texture->h;
/* <1.2 Never use DSCAPS_VIDEOONLY here. It kills performance
* No DSCAPS_SYSTEMONLY either - let dfb decide
* 1.2: DSCAPS_SYSTEMONLY boosts performance by factor ~8
* Depends on other settings as well. Let dfb decide.
*/
dsc.caps = DSCAPS_PREMULTIPLIED;
#if 0
if (texture->access == SDL_TEXTUREACCESS_STREAMING)
dsc.caps |= DSCAPS_SYSTEMONLY;
else
dsc.caps |= DSCAPS_VIDEOONLY;
#endif
/* find the right pixelformat */
dsc.pixelformat = SDLToDFBPixelFormat(data->format);
if (dsc.pixelformat == DSPF_UNKNOWN) {
SDL_SetError("Unknown pixel format %d\n", data->format);
goto error;
}
data->pixels = NULL;
/* Create the surface */
SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc,
&data->surface));
if (SDL_ISPIXELFORMAT_INDEXED(data->format)
&& !SDL_ISPIXELFORMAT_FOURCC(data->format)) {
SDL_DFB_CHECKERR(data->surface->GetPalette(data->surface,
&data->palette));
}
}
#if (DFB_VERSION_ATLEAST(1,2,0))
data->render_options = DSRO_NONE;
#endif
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format);
SDL_DFB_CALLOC(data->pixels, 1, texture->h * data->pitch);
}
return 0;
error:
SDL_DFB_RELEASE(data->palette);
SDL_DFB_RELEASE(data->surface);
SDL_DFB_FREE(texture->driverdata);
return -1;
}