I'm at a loss using VBO allocating

OpenGL Development JOGL Development
#1

I use VBO to render my terrain. I allocate after a button press.
I can scale the terrain size. if I create a terrain, the software render it wery well with 1 texture. Then, Defining a new one with the same or lesser terrain works too. But defining a larger terrain result an invisible terrain without texture.
I have no idea what could be the problem.

gl.glColor3f( 0.4f, 0.5f, 1.0f );
gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, vertexNames[actualTerrain][0] );
gl.glVertexPointer( 3, GL.GL_FLOAT, 0, BufferUtils.bufferOffset( vertexOffsets[actualTerrain][k][l] * BufferUtils.SIZEOF_FLOAT ) );

gl.glBindTexture( GL.GL_TEXTURE_2D, detailTextures[actualTerrain][ p ] );
gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, names[2] );
gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, BufferUtils.bufferOffset(0) );
gl.glEnable( GL.GL_TEXTURE_2D );

gl.glBindBufferARB(GL.GL_ELEMENT_ARRAY_BUFFER_ARB, names[0] );

gl.glEnableClientState( GL.GL_VERTEX_ARRAY);
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );

gl.glDrawRangeElements( GL.GL_TRIANGLE_STRIP, 0, vertexIndexCount, vertexIndexCount, GL.GL_UNSIGNED_INT, BufferUtils.bufferOffset( 0 ) );

gl.glDisableClientState( GL.GL_VERTEX_ARRAY);
gl.glDisableClientState( GL.GL_TEXTURE_COORD_ARRAY );

It dowsn’t work when I create a larger terrain than last one.
The tringle_strip appears but the texture not.

The vbo creation code:

public static void deleteVBONames(){
if( vertexNames[actualTerrain][0] != 0 ){ gl.glDeleteBuffersARB( 1, vertexNames[actualTerrain] ); }
}

public static void createVBONames(){
gl.glGenBuffersARB( 1, vertexNames[actualTerrain] );
gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, vertexNames[actualTerrain][0] );
gl.glBufferDataARB( GL.GL_ARRAY_BUFFER_ARB, stepLimits[ actualTerrain ] * stepLimits[ actualTerrain ] * 3 * vertexCount * BufferUtils.SIZEOF_FLOAT, vertexBuffer[actualTerrain], GL.GL_DYNAMIC_DRAW_ARB );
/*int[] i = createInt1DArray( 1 );
gl.glGetBufferParameterivARB( GL.GL_ARRAY_BUFFER_ARB, GL.GL_BUFFER_SIZE_ARB, i );
System.out.println(";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"+i[0]); */
gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, 0);
}

The glGetBufferParameterivARB return value is equals to the new buffer size expected.

Thanks

#2

Have you tried installing the DebugGL pipeline to see if there are any errors reported during rendering?

Also take a look at the VBO example in the jogl-demos workspace.

#3

Hello! Thanks to try to help me.:slight_smile:

The code is written by the jogl vbo demo.

I haven’t tried installing DebugGL, I try it asap.

Thanks!

#4

Hello,

I used this statement:
glDrawable.setGL(new DebugGL(glDrawable.getGL()));

Nothing changed. No exception has been throwned.

Has You got another idea? I hasn’t.