static int NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
SDL_Log("enter %s\n", __func__);
glLoadTileSet(txdat->image,
rect->w, rect->h,
rect->w, rect->h,
GL_RGBA,
get_gltexture_size(rect->w),
get_gltexture_size(rect->h),
TEXGEN_OFF, 0, NULL,
pixels);
return 0;
}
static int NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
char *new_pixels = NULL;
const int gl_w = get_gltexture_size(rect->w);
const int gl_h = get_gltexture_size(rect->h);
const int w = 1 << (3+gl_w); /* Texture sizes must be a power of 2. */
const int h = 1 << (3+gl_h); /* Texture sizes must be a power of 2. */
if (w != rect->w || h != rect->h) {
/* Allocate a temporary surface and copy pixels into it while
* enlarging the pitch. */
const char *src;
char *dst;
int new_pitch = 2 * w;
int i;
new_pixels = malloc(2 * w * h);
if (!new_pixels)
return SDL_ENOMEM;
src = pixels;
dst = new_pixels;
for (i=0; i<rect->h; i++) {
memcpy(dst, src, pitch);
src += pitch;
dst += new_pitch;
}
}
glLoadTile(txdat->image,
gl_w, gl_h,
rect->w, rect->h,
texture->format == SDL_PIXELFORMAT_ABGR1555 ? GL_RGBA : GL_RGB,
TEXGEN_OFF, 0, NULL,
new_pixels? new_pixels : pixels);
if (new_pixels)
free(new_pixels);
return 0;
}
