Bill, Only devices that have the non-power-of-two extension (NPOT) can do that. Different chips support different extensions. Most everyone uses power of two anamorphically to do NPOT rendering. Just pick the closest power of two size (for a full screen draw, 512x256 for 1st gen or 1024x512 for high density), squeeze your image into it and draw it at the original aspect ratio and while you'll lose a little quality, it will work.
On Sep 5, 9:37 pm, billconan <[email protected]> wrote: > hello guys, > > I cannot guarantee my texture size be a power of two, therefore, i'm > using GL_CLAMP_TO_EDGE, > > but when i call glTexImage2D, or glutil.teximage2d, i always get the > Opengl Error Code 1281 Invalid Value. > > this same setting seems to work on iphone. > > does this mean that android only supports power of two texture maps? > > if i hard code the bitmap size to be power of two, then my program > will work. otherwise the texture map is black. > > see, this is how i set the texture map, it is exactly the same as the > official sample. > > thanks > > Log.d("Ball Texture","textureID "+textureID+"; lengthx "+lengthx+"; > lengthy "+lengthy); > //lengthx=64; > //lengthy=64; > if(textureID==0) > { > int[] textures = new int[1]; > gl.glGenTextures(1,textures,0 ); > textureID=textures[0]; > } > > gl.glBindTexture(GL10.GL_TEXTURE_2D, textureID); > > gl.glTexParameterf(GL10.GL_TEXTURE_2D, > GL10.GL_TEXTURE_MIN_FILTER,GL10.GL_NEAREST); > > gl.glTexParameterf(GL10.GL_TEXTURE_2D,GL10.GL_TEXTURE_MAG_FILTER,GL10.GL_NE > AREST); > > gl.glTexParameterf(GL10.GL_TEXTURE_2D, > GL10.GL_TEXTURE_WRAP_S,GL10.GL_CLAMP_TO_EDGE); > gl.glTexParameterf(GL10.GL_TEXTURE_2D, > GL10.GL_TEXTURE_WRAP_T,GL10.GL_CLAMP_TO_EDGE); > > gl.glTexEnvf(GL10.GL_TEXTURE_ENV, > GL10.GL_TEXTURE_ENV_MODE,GL10.GL_REPLACE); > Log.d("opengl error 1", "error code "+gl.glGetError()); > > Bitmap bitmap=Bitmap.createBitmap(lengthx, lengthy, > Bitmap.Config.RGB_565); > Canvas mCanvas=new Canvas(bitmap); > > //mCanvas.drawColor(Color.BLUE); > > Path path=new Path(); > > int pointnum=(int) (pointSet.length*0.5); > > // Log.d("point cound:",pointnum+";"); > path.moveTo(pointSet[0], pointSet[1]); > for(int i=1;i<pointnum;++i) > { > // Log.d("point: ",pointSet[i*2]+";"+pointSet[i*2+1]); > path.lineTo(pointSet[i*2], pointSet[i*2+1]); > > } > path.close(); > > // mC > mCanvas.drawPath(path, ballPaint); > //(lengthx*0.5f, lengthy*0.5f, 30.0f,ballPaint); > > ByteBuffer dst ; > > dst=ByteBuffer.allocate(bitmap.getHeight()*bitmap.getWidth()*4); > > bitmap.copyPixelsToBuffer(dst); > > gl.glTexImage2D(GL10.GL_TEXTURE_2D, 0, GL10.GL_RGB, lengthx, > lengthy, 0, GL10.GL_RGB, GL10.GL_UNSIGNED_BYTE,dst ); -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
