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sdl2: add SDL_CreateRGBSurfaceWithFormat; use pitch in SDL_CreateRGBSurfaceFrom

--- a/include/npe/SDL2/SDL.h

+++ b/include/npe/SDL2/SDL.h

@@ -71,6 +71,7 @@

 SDL_Cursor *SDL_GetDefaultCursor(void);

 void SDL_SetCursor(SDL_Cursor *cursor);

 void SDL_FreeCursor(SDL_Cursor *cursor);

+SDL_Surface *SDL_CreateRGBSurfaceWithFormat(Uint32 flags, int w, int h, int bpp, Uint32 fmt);

 SDL_Surface *SDL_CreateRGBSurface(Uint32 flags, int width, int height, int depth, Uint32 rm, Uint32 gm, Uint32 bm, Uint32 am);

 SDL_Surface *SDL_CreateRGBSurfaceFrom(Uint32 *pixels, int w, int h, int bpp, int pitch, Uint32 rm, Uint32 gm, Uint32 bm, Uint32 am);

 Uint32 SDL_MapRGB(SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b);

--- a/libnpe_sdl2/sdl2.c

+++ b/libnpe_sdl2/sdl2.c

@@ -300,12 +300,12 @@

 }

 SDL_Surface *

-SDL_CreateRGBSurface(Uint32, int w, int h, int bpp, Uint32 rm, Uint32 gm, Uint32 bm, Uint32 am)

+SDL_CreateRGBSurface(Uint32 flags, int w, int h, int bpp, Uint32 rm, Uint32 gm, Uint32 bm, Uint32 am)

 {

 	SDL_Surface *s;

 	int n;

-	USED(rm, gm, bm, am); /* FIXME masks */

+	USED(flags, rm, gm, bm, am); /* FIXME flags & masks */

 	n = w*h*bpp/8;

 	if((s = calloc(1, sizeof(*s)+n)) == nil){

@@ -328,17 +328,29 @@

 SDL_CreateRGBSurfaceFrom(Uint32 *pixels, int w, int h, int bpp, int pitch, Uint32 rm, Uint32 gm, Uint32 bm, Uint32 am)

 {

 	SDL_Surface *s;

-	int n;

+	int n, y;

-	USED(pitch); /* FIXME pitch */

-

 	if((s = SDL_CreateRGBSurface(0, w, h, bpp, rm, gm, bm, am)) == nil)

 		return nil;

-	n = w*h*bpp/8;

-	memmove(s->pixels, pixels, n);

+	n = w*bpp/8;

+	for(y = 0; y < h; y++){

+		memmove(s->pixels + y*n, pixels, n);

+		pixels += pitch / sizeof(Uint32);

+	}

 	return s;

+}

+

+SDL_Surface *

+SDL_CreateRGBSurfaceWithFormat(Uint32 flags, int w, int h, int bpp, Uint32 fmt)

+{

+	if(fmt != SDL_PIXELFORMAT_ARGB8888){

+		werrstr("SDL_CreateRGBSurfaceWithFormat: FIXME non-argb8888");

+		return nil;

+	}

+

+	return SDL_CreateRGBSurface(flags, w, h, bpp, 0, 0, 0, 0);

 }

 void