[Solved] (LWJGL) VBO problems

Newbie & Debugging Questions
#21

[icode]vertexData.clear()[/icode]

Edit: Ninja’d

#22

I didn’t know there was a clear method. Well, I tried that and now the triangle has even more shading.

trans += 0.1f;
            
            
            glBufferData(GL_ARRAY_BUFFER, vertexData, GL_DYNAMIC_DRAW);
            
            vertexData.clear();

I just pasted my code so you can check it.

http://pastebin.java-gaming.org/ee4aa0315041c

#23

You are not updating the vertices. Add this code in your gameloop.


// Clear the vertices buffer
vertexData.clear();

// Update the trans variable
trans += 0.1f;

// Re-create the vertex data
vertexData.put(new float[]{-0.5f + trans, -0.5f, 0, 0.5f + trans, -0.5f, 0, 0.5f + trans, 0.5f, 0});
vertexData.flip();

// Now, upload to the GPU
glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
glBufferData(GL_ARRAY_BUFFER, vertexData, GL_DYNAMIC_DRAW);

And then render as you usually would. Hope this helps.

#24

It works! ;D I also looked at redbladewarriors’ tutorial on youtube and learned some more things Thank you.

#25

Glad that you got it working. Had to get some sleep now.