/** Initialize the WebGL buffers for our shapes. */
private void buildBuffers(Shape[] shapes) {
if (shapes != null) {
vertices = new WebGLBuffer[shapes.length];
colors = new WebGLBuffer[shapes.length];
indices = new WebGLBuffer[shapes.length];
for (int i = 0; i < shapes.length; ++i) {
vertices[i] = gl.createBuffer();
gl.bindBuffer(BufferTarget.ARRAY_BUFFER, vertices[i]);
gl.bufferData(
BufferTarget.ARRAY_BUFFER,
Float32Array.create(shapes[i].vertices),
BufferUsage.STATIC_DRAW);
gl.vertexAttribPointer(vertexPositionAttribute, 3, DataType.FLOAT, false, 0, 0);
colors[i] = gl.createBuffer();
gl.bindBuffer(BufferTarget.ARRAY_BUFFER, colors[i]);
gl.bufferData(
BufferTarget.ARRAY_BUFFER,
Float32Array.create(shapes[i].colors),
BufferUsage.STATIC_DRAW);
gl.vertexAttribPointer(vertexColorAttribute, 4, DataType.FLOAT, false, 0, 0);
if (shapes[i].indexes != null) {
indices[i] = gl.createBuffer();
gl.bindBuffer(BufferTarget.ELEMENT_ARRAY_BUFFER, indices[i]);
gl.bufferData(
BufferTarget.ELEMENT_ARRAY_BUFFER,
Uint16Array.create(shapes[i].indexes),
BufferUsage.STATIC_DRAW);
}
}
} else {
Window.alert("No shapes found");
}
}
