I've been trying to speed up my texture transfers using pbo's but haven't been successful yet.  I can get the texture to display but they come out garbled.  here's a code snippet:


PImage texImage = loadImage(filename);
int tex = new int[1];
int pbo = new int[1];

gl.glGenTextures(1, tex, 0);
gl.glBindTexture(GL.GL_TEXTURE_2D, tex[0]);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_GENERATE_MIPMAP, GL.GL_TRUE);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER,GL.GL_LINEAR_MIPMAP_LINEAR);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER,GL.GL_LINEAR);
gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, 4, texImage.width,texImage.height, 0, GL.GL_BGRA, GL.GL_UNSIGNED_BYTE, null);

gl.glGenBuffers(1, pbo, 0);
gl.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, pbo[0]);
gl.glBufferData(GL.GL_PIXEL_UNPACK_BUFFER, texImage.height* texImage.width*BufferUtil.SIZEOF_FLOAT, IntBuffer.wrap(texImage.pixels),GL.GL_STATIC_DRAW);
gl.glMapBuffer(GL.GL_PIXEL_UNPACK_BUFFER, GL.GL_WRITE_ONLY);
gl.glUnmapBuffer(GL.GL_PIXEL_UNPACK_BUFFER);
gl.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, 0);
gl.glEnable(GL.GL_TEXTURE_2D);



I suspect the culprit is in the gl.glBufferData call where i state:

texImage.height* texImage.width*BufferUtil.SIZEOF_FLOAT.

While i was messing around i was able to get the texture to display properly by using:

texImage.height* texImage.width*7

but for some reason this only worked when i ran the sketch the first couple of times and now the texture is corrupted every time, weird.  Any help would be greatly appreciated.