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OpenGL code problem with vbo + opengl shader language

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Hello! My code doesn't work, and I don't know why. Probably, I oversight an important mistake. Can anyone help me? Thanks. My water render cycle::
int[] temp = CreationFactory.createInt1DArray( 3 );
        gl.glGenBuffersARB( 3, temp );

        gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, waterNames[actualTerrain] = temp[0] );
        gl.glBufferDataARB( GL.GL_ARRAY_BUFFER_ARB, stepLimits[ actualTerrain ] * stepLimits[ actualTerrain ] * 3 * vertexCount * BufferUtils.SIZEOF_FLOAT, waterBuffer[actualTerrain], GL.GL_DYNAMIC_DRAW_ARB );
        gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, 0);

        gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, waterNormalNames[actualTerrain] = temp[1] );
        gl.glBufferDataARB( GL.GL_ARRAY_BUFFER_ARB, stepLimits[ actualTerrain ] * stepLimits[ actualTerrain ] * vertexCount * BufferUtils.SIZEOF_FLOAT, waterNormalBuffer[actualTerrain], GL.GL_DYNAMIC_DRAW_ARB );
        gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, 0);

        gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, waterDistanceNames[actualTerrain] = temp[2] );
        gl.glBufferDataARB( GL.GL_ARRAY_BUFFER_ARB, stepLimits[ actualTerrain ] * stepLimits[ actualTerrain ] * vertexCount * BufferUtils.SIZEOF_FLOAT, waterDistanceBuffer[actualTerrain], GL.GL_STATIC_DRAW_ARB );
        gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, 0);
gl.glBindBufferARB( GL.GL_ARRAY_BUFFER_ARB, 1);
        gl.glDisable( GL.GL_TEXTURE_2D );

        for(int k=0; k< stepLimits[actualTerrain]; ++k){
            for(int l=0; l< stepLimits[actualTerrain]; ++l){
                gl.glEnable( GL.GL_BLEND );
                gl.glBlendFunc( GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA );
                if( needWaterRender[actualTerrain][k][l] ){

                    gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, waterNames[actualTerrain] );
                    gl.glVertexPointer( 3, GL.GL_FLOAT, 0, BufferUtils.bufferOffset( waterOffsets[actualTerrain][k][l] * BufferUtils.SIZEOF_FLOAT ) );

                    gl.glUseProgramObjectARB( waterShaderObj );

                        gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, waterNormalNames[actualTerrain] );
                        gl.glVertexAttribPointerARB( NORMAL_BUFFER,  1, GL.GL_FLOAT, false, 0, BufferUtils.bufferOffset( waterNormalOffsets[actualTerrain][k][l] * BufferUtils.SIZEOF_FLOAT ) );

                        gl.glBindBufferARB(GL.GL_ARRAY_BUFFER_ARB, waterDistanceNames[actualTerrain] );
                        gl.glVertexAttribPointerARB( DISTANCE_BUFFER,  1, GL.GL_FLOAT, false, 0, BufferUtils.bufferOffset( waterDistanceOffsets[actualTerrain][k][l] * BufferUtils.SIZEOF_FLOAT ) );

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

                        gl.glEnableClientState( GL.GL_VERTEX_ARRAY);
                        gl.glEnableClientState( GL.GL_COLOR_ARRAY);
                        gl.glEnableVertexAttribArrayARB( DISTANCE_BUFFER );
                        gl.glEnableVertexAttribArrayARB( NORMAL_BUFFER );
                        gl.glDrawRangeElements( GL.GL_TRIANGLE_STRIP, 0, vertexIndexCount, vertexIndexCount, GL.GL_UNSIGNED_INT, BufferUtils.bufferOffset( 0 ) );
                        gl.glDisableClientState( GL.GL_COLOR_ARRAY );
                        gl.glDisableClientState( GL.GL_VERTEX_ARRAY );
                        gl.glDisableVertexAttribArrayARB( NORMAL_BUFFER );
                        gl.glDisableVertexAttribArrayARB( DISTANCE_BUFFER );

                    gl.glUseProgramObjectARB( 0 );

                gl.glDisable( GL.GL_BLEND );

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I guess there are people on this board who can handle this without it, but id claim that most people (me too) would be interested in what exactly doesnt work, if there are compiler errors and which and so on...


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The code can be compiled. But when I try to run it, I receive this message:
# An unexpected error has been detected by HotSpot Virtual Machine:
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6915739c, pid=2348, tid=1468
# Java VM: Java HotSpot(TM) Client VM (1.5.0-b64 mixed mode, sharing)
# Problematic frame:
# C [atioglxx.dll+0x15739c]
# An error report file with more information is saved as hs_err_pid2348.log
# If you would like to submit a bug report, please visit:

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Well, looks like a problem with your ati card... cant say more cuz this is a little too cryptic for me, but you could try upgrading to newer graphic drivers (beware of the newest, for me they make only problems (radeon9500)), but i wouldnt really expect this to solve your problem... sorry.


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It looks like you haven't allocated the memory properly, have you tried running both the VBOs and the shaders seperate? (check the shader using a few glBegin(GL_QUAD) quads)

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Ok, I found the problem!

This line is the source of the exception:
gl.glEnableClientState( GL.GL_COLOR_ARRAY);
I don't have color array:)

By the way, thanks very much.
considering your tips, I tested the vbo code without the shader and I corrected some bugs.

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