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| public class Renderfield3D implements IDrawable{
private int _verticesID = 0;
private int _indicesID = 0;
private int _coloursID = 0;
@Override
public void load() {
float[] vertices = new float[]
{ 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f };
int[] indices = new int[]
{
4, 5, 1, 0, 5, 7, 3, 1, 7, 6, 2, 3, 6, 4, 0, 2, 0, 1, 3, 2, 6, 7, 5, 4 };
float[] colours = new float[]
{
1.0f, 1.0f, 1.0f, 1.0f
};
_verticesID = VBOHandler.createVBO();
_indicesID = VBOHandler.createVBO();
_coloursID = VBOHandler.createVBO();
FloatBuffer bufferedColours = BufferUtils.createFloatBuffer(colours.length);
bufferedColours.put(colours);
FloatBuffer bufferedvertices = BufferUtils.createFloatBuffer(vertices.length);
bufferedvertices.put(vertices);
IntBuffer bufferedindices = BufferUtils.createIntBuffer(indices.length);
bufferedindices.put(indices);
VBOHandler.bufferData(_verticesID, bufferedvertices);
VBOHandler.bufferElementData(_indicesID, bufferedindices);
}
@Override
public void draw() {
GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, _verticesID);
GL11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);
GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, _coloursID);
GL11.glColorPointer(4, GL11.GL_FLOAT, 0, 0);
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB, _indicesID);
GL12.glDrawRangeElements(GL11.GL_QUADS, 0, 24, 24,
GL11.GL_UNSIGNED_INT, 0);
}
}
public class VBOHandler {
public static IntBuffer createVBOs(int amount)
{
if(GLContext.getCapabilities().GL_ARB_vertex_buffer_object)
{
IntBuffer buffer = BufferUtils.createIntBuffer(amount);
ARBVertexBufferObject.glGenBuffersARB(buffer);
return buffer;
}
return null;
}
public static int createVBO()
{
return createVBOs(1).get(0);
}
public static void bufferData(int id, FloatBuffer buffer)
{
if(GLContext.getCapabilities().GL_ARB_vertex_buffer_object)
{
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, id);
ARBVertexBufferObject.glBufferDataARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, buffer,
ARBVertexBufferObject.GL_STATIC_DRAW_ARB);
}
}
public static void bufferElementData(int id, IntBuffer buffer)
{
if(GLContext.getCapabilities().GL_ARB_vertex_buffer_object)
{
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB, id);
ARBVertexBufferObject.glBufferDataARB(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB, buffer,
ARBVertexBufferObject.GL_STATIC_DRAW_ARB);
}
}
} |
