private void initOpenCL1() {
clContext = context.getOpenCLContext();
Device device = clContext.getDevices().get(0);
clQueue = clContext.createQueue(device).register();
// create kernel
Program program = null;
File tmpFolder = JmeSystem.getStorageFolder();
File binaryFile = new File(tmpFolder, getClass().getSimpleName() + ".clc");
try {
// attempt to load cached binary
byte[] bytes = Files.readAllBytes(binaryFile.toPath());
ByteBuffer bb = BufferUtils.createByteBuffer(bytes);
program = clContext.createProgramFromBinary(bb, device);
program.build();
LOG.info("reuse program from cached binaries");
} catch (java.nio.file.NoSuchFileException ex) {
// do nothing, cache was not created yet
} catch (Exception ex) {
LOG.log(Level.INFO, "Unable to use cached program binaries", ex);
}
if (program == null) {
// build from sources
String source =
""
+ "__kernel void ScaleKernel(__global float* vb, float scale)\n"
+ "{\n"
+ " int idx = get_global_id(0);\n"
+ " float3 pos = vload3(idx, vb);\n"
+ " pos *= scale;\n"
+ " vstore3(pos, idx, vb);\n"
+ "}\n";
program = clContext.createProgramFromSourceCode(source);
program.build();
// Save binary
try {
ByteBuffer bb = program.getBinary(device);
byte[] bytes = new byte[bb.remaining()];
bb.get(bytes);
Files.write(binaryFile.toPath(), bytes);
} catch (UnsupportedOperationException | OpenCLException | IOException ex) {
LOG.log(Level.SEVERE, "Unable to save program binaries", ex);
}
LOG.info("create new program from sources");
}
program.register();
kernel = program.createKernel("ScaleKernel").register();
}
private void initOpenCL2() {
// bind vertex buffer to OpenCL
VertexBuffer vb = geom.getMesh().getBuffer(VertexBuffer.Type.Position);
buffer = clContext.bindVertexBuffer(vb, MemoryAccess.READ_WRITE).register();
ws = new com.jme3.opencl.Kernel.WorkSize(geom.getMesh().getVertexCount());
}