Thanks for the suggestions, I'll try them out when I get home.
Night, Thats just the first call to fail, I'd imagine the subsequent calls
using the gl functions would fail as well.
- Dan
On Thu, Aug 27, 2009 at 10:42 AM, Streets Of Boston <flyingdutc...@gmail.com
> wrote:
>
> You could do the loading of the bitmap in a seperate background thread
> and generating the textures in your 'mGl' thread when this separate
> background thread has finished.
>
> I don't think you can use AsyncTask to do this, since the onPostExecute
> () needs to be executed on the main GUI thread (which is not your
> 'mGl' thread, i assume). Instead you could use ExecutorService in
> java.util.concurrent for that.
>
>
> On Aug 27, 9:50 am, Nightwolf <mikh...@gmail.com> wrote:
> > If the problem is with glGenTextures then why not to generate texture
> > ids pool beforehand?
> >
> > On Aug 27, 8:59 am, Dan Sherman <impact...@gmail.com> wrote:
> >
> >
> >
> > > I'm converting an app I've written from Canvas to OpenGL, and not
> having too
> > > hard of a time yet.
> >
> > > However, I've run into one snag that I can't seem to get around. My
> old app
> > > was threading image loads, because there are a ton of them, however, it
> > > looks like the OpenGL implementation protects itself to a single
> thread. I
> > > have a basic loadBitmap() function as follows:
> > > protected static void loadBitmap(GLSprite sprite, int resourceId) {
> > > int textureName = -1;
> > > if (mContext != null && mGl != null) {
> > > mGl.glGenTextures(1, mTextureNameWorkspace, 0);
> >
> > > textureName = mTextureNameWorkspace[0];
> > > mGl.glBindTexture(GL10.GL_TEXTURE_2D, textureName);
> >
> > > mGl.glTexParameterf(GL10.GL_TEXTURE_2D,
> > > GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST);
> > > mGl.glTexParameterf(GL10.GL_TEXTURE_2D,
> > > GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
> >
> > > mGl.glTexParameterf(GL10.GL_TEXTURE_2D,
> GL10.GL_TEXTURE_WRAP_S,
> > > GL10.GL_CLAMP_TO_EDGE);
> > > mGl.glTexParameterf(GL10.GL_TEXTURE_2D,
> GL10.GL_TEXTURE_WRAP_T,
> > > GL10.GL_CLAMP_TO_EDGE);
> >
> > > mGl.glTexEnvf(GL10.GL_TEXTURE_ENV,
> GL10.GL_TEXTURE_ENV_MODE,
> > > GL10.GL_REPLACE);
> >
> > > Bitmap bitmap = BitmapFactory.decodeResource(r,
> resourceId);
> >
> > > GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
> >
> > > mCropWorkspace[0] = 0;
> > > mCropWorkspace[1] = bitmap.getHeight();
> > > mCropWorkspace[2] = bitmap.getWidth();
> > > mCropWorkspace[3] = -bitmap.getHeight();
> >
> > > sprite.setTextureName(textureName);
> > > sprite.setSize(bitmap.getWidth(), bitmap.getHeight());
> >
> > > bitmap.recycle();
> >
> > > ((GL11) mGl).glTexParameteriv(GL10.GL_TEXTURE_2D,
> > > GL11Ext.GL_TEXTURE_CROP_RECT_OES, mCropWorkspace, 0);
> >
> > > int error = mGl.glGetError();
> > > if (error != GL10.GL_NO_ERROR) {
> > > // Logging
> > > }
> > > }
> >
> > > This is based heavily off of the SpriteMethodTest in apps-for-android.
> If I
> > > make a call to this function from the thread that mGl was created from,
> > > everything goes fine. However, if I thread the calls to this function,
> the
> > > calls to glGenTextures() fail with a varying error code (changes with
> each
> > > run). I haven't been able to find any information regarding how to
> deal
> > > with this...
> >
> > > Any help?
> > > Thanks
> > > - Dan- Hide quoted text -
> >
> > - Show quoted text -
> >
>
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