Game Development Reference
In-Depth Information
setFilters(GL10.
GL_NEAREST
, GL10.
GL_NEAREST
);
gl.glBindTexture(GL10.
GL_TEXTURE_2D
, 0);
width = bitmap.getWidth();
height = bitmap.getHeight();
bitmap.recycle();
}
}
catch
(IOException e) {
throw new
RuntimeException("Couldn't load texture '" + fileName
+ "'", e);
}
finally
{
if
(in !=
null
)
try
{
in.close();
}
catch
(IOException e) {
}
}
}
The
load()
method stays essentially the same as well. The only addition is the call to
createMipmaps()
in case the texture should be mipmapped. Non-mipmapped
Texture
instances
are created as before.
private void
createMipmaps(GL10 gl, Bitmap bitmap) {
gl.glBindTexture(GL10.
GL_TEXTURE_2D
, textureId);
width = bitmap.getWidth();
height = bitmap.getHeight();
setFilters(GL10.
GL_LINEAR_MIPMAP_NEAREST
, GL10.
GL_LINEAR
);
int
level = 0;
int
newWidth = width;
int
newHeight = height;
while
(
true
) {
GLUtils.
texImage2D
(GL10.
GL_TEXTURE_2D
, level, bitmap, 0);
newWidth = newWidth / 2;
newHeight = newHeight / 2;
if
(newWidth <= 0)
break
;
Bitmap newBitmap = Bitmap.
createBitmap
(newWidth, newHeight,
bitmap.getConfig());
Canvas canvas =
new
Canvas(newBitmap);
canvas.drawBitmap(bitmap,
new
Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()),
new
Rect(0, 0, newWidth, newHeight),
null
);
bitmap.recycle();
bitmap = newBitmap;
level++;
}
