/** {@inheritDoc} */
@Override
public void setVertices(float[] vertices, int offset, int count) {
isDirty = true;
BufferUtils.copy(vertices, buffer, count, offset);
buffer.position(0);
buffer.limit(count);
if (isBound) {
if (App.getGL20() != null) {
GL20 gl = App.getGL20();
gl.glBufferData(GL20.GL_ARRAY_BUFFER, byteBuffer.limit(), byteBuffer, usage);
}
isDirty = false;
}
}
@Override
public void bind(ShaderProgram shader, int[] locations) {
if (bufferHandle == 0) throw new GLViewRuntimeException("No buffer allocated!");
final GL20 gl = App.getGL20();
gl.glBindBuffer(GL20.GL_ARRAY_BUFFER, bufferHandle);
if (isDirty) {
byteBuffer.limit(buffer.limit() * 4);
gl.glBufferData(GL20.GL_ARRAY_BUFFER, byteBuffer.limit(), byteBuffer, usage);
isDirty = false;
}
final int numAttributes = attributes.size();
if (locations == null) {
for (int i = 0; i < numAttributes; i++) {
final VertexAttribute attribute = attributes.get(i);
final int location = shader.getAttributeLocation(attribute.alias);
if (location < 0) continue;
shader.enableVertexAttribute(location);
if (attribute.usage == Usage.ColorPacked)
shader.setVertexAttribute(
location,
attribute.numComponents,
GL20.GL_UNSIGNED_BYTE,
true,
attributes.vertexSize,
attribute.offset);
else
shader.setVertexAttribute(
location,
attribute.numComponents,
GL20.GL_FLOAT,
false,
attributes.vertexSize,
attribute.offset);
}
} else {
for (int i = 0; i < numAttributes; i++) {
final VertexAttribute attribute = attributes.get(i);
final int location = locations[i];
if (location < 0) continue;
shader.enableVertexAttribute(location);
if (attribute.usage == Usage.ColorPacked)
shader.setVertexAttribute(
location,
attribute.numComponents,
GL20.GL_UNSIGNED_BYTE,
true,
attributes.vertexSize,
attribute.offset);
else
shader.setVertexAttribute(
location,
attribute.numComponents,
GL20.GL_FLOAT,
false,
attributes.vertexSize,
attribute.offset);
}
}
isBound = true;
}