Example usage for org.lwjgl.opengl ARBVertexBufferObject glGenBuffersARB

Introduction

In this page you can find the example usage for org.lwjgl.opengl ARBVertexBufferObject glGenBuffersARB.

Prototype

@NativeType("void")
public static int glGenBuffersARB() 

Source Link

Document

Generates buffer object names.

Usage

From source file:com.a2client.corex.MeshBuffer.java

License:Open Source License

public void load(Const.BUFFER_TYPE buffer_type, MyInputStream in) {
    try {/*from  w w  w  .j  av  a2  s. c om*/
        Count = in.readInt();
        Stride = in.readInt();
        int total = Count * Stride;
        byte[] bytes = new byte[total];
        int readed = in.read(bytes);
        if (readed != total) {
            Log.error("MeshBuffer load wrong bytes, total=" + total + " readed=" + readed);
            return;
        }
        Data = ByteBuffer.allocateDirect(total);
        Data.put(bytes);
        Data.flip();
        DataPtr = MemoryUtil.getAddress(Data);

        if (buffer_type == Const.BUFFER_TYPE.btIndex) {
            DType = ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB;
            RType = Const.RES_TYPE.rtMeshIdex;

            switch (Stride) {
            case 1:
                IndexType = GL11.GL_UNSIGNED_BYTE;
                break;
            case 2:
                IndexType = GL11.GL_UNSIGNED_SHORT;
                break;
            case 3:
                IndexType = GL11.GL_FALSE;
                break;
            case 4:
                IndexType = GL11.GL_UNSIGNED_INT;
                break;
            default:
                IndexType = GL11.GL_FALSE;
            }
        } else {
            DType = ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB;
            RType = Const.RES_TYPE.rtMeshVertex;
        }

        //  ? ?  VBO
        ID = ARBVertexBufferObject.glGenBuffersARB();
        ARBVertexBufferObject.glBindBufferARB(DType, ID);
        ARBVertexBufferObject.glBufferDataARB(DType, Data, ARBBufferObject.GL_STATIC_DRAW_ARB);
        ResManager.Active.put(RType, this);
        //            Data = null;
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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From source file:com.mitchellkember.mycraft.GameRenderer.java

License:Open Source License

/**
 * Creates the VBO that this GameRenderer will use.
 * //from  w ww .j  a va  2  s  .  c  om
 * @throws LWJGLException if VBOs are not supported
 */
private void initializeData() throws LWJGLException {
    if (!GLContext.getCapabilities().GL_ARB_vertex_buffer_object) {
        Mycraft.LOGGER.log(Level.SEVERE, "GL_ARB_vertex_buffer_object not supported.");
        throw new LWJGLException("GL_ARB_vertex_buffer_object not supported");
    }

    // Create it
    bufferObjectID = ARBVertexBufferObject.glGenBuffersARB();

    // Vertex Data interleaved format: XYZST
    final int position = 3;
    final int texcoords = 2;
    final int sizeOfInt = 4; // 4 bytes in an int
    final int vertexDataSize = (position + texcoords) * sizeOfInt;

    // Bind it
    ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, bufferObjectID);

    // Vertex and texture pointers
    glVertexPointer(3, GL_INT, vertexDataSize, 0);
    glTexCoordPointer(2, GL_INT, vertexDataSize, position * sizeOfInt);
    glEnableClientState(GL_VERTEX_ARRAY);
    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
}

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