public void LockOpenGLObject(ComputeImage2D image)
{
List <ComputeMemory> c = new List <ComputeMemory>()
{
image
};
queue.AcquireGLObjects(c, null);
}
public void Draw(Action <ComputeBuffer <Vector4>, ComputeCommandQueue> renderer)
{
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Finish();
_queue.AcquireGLObjects(new[] { _openCl }, null);
renderer(_openCl, _queue);
_queue.ReleaseGLObjects(new[] { _openCl }, null);
_queue.Finish();
GL.BindBuffer(BufferTarget.PixelUnpackBuffer, _pub);
GL.BindTexture(TextureTarget.Texture2D, _texture);
GL.TexSubImage2D(TextureTarget.Texture2D, 0, 0, 0, _width, _height, PixelFormat.Rgba, PixelType.Float, IntPtr.Zero);
GL.Begin(BeginMode.Quads);
GL.TexCoord2(0f, 1f);
GL.Vertex3(0f, 0f, 0f);
GL.TexCoord2(0f, 0f);
GL.Vertex3(0f, 1f, 0f);
GL.TexCoord2(1f, 0f);
GL.Vertex3(1f, 1f, 0f);
GL.TexCoord2(1f, 1f);
GL.Vertex3(1f, 0f, 0f);
GL.End();
}
public void acquireGLObjects(List <ComputeMemory> _memObjs)
{
_commands.AcquireGLObjects(_memObjs, null);
}
// tick: renders one frame
public void Tick()
{
//float t = 21.5f;
// initialize timer
if (firstFrame)
{
timer.Reset();
timer.Start();
firstFrame = false;
}
// handle keys, only when running time set to -1 (infinite)
if (runningTime == -1)
if (camera.HandleInput())
{
// camera moved; restart
ClearAccumulator();
}
// render
if (useGPU)
{
// add your CPU + OpenCL path here
// mind the gpuPlatform parameter! This allows us to specify the platform on our
// test system.
// note: it is possible that the automated test tool provides you with a different
// platform number than required by your hardware. In that case, you can hardcode
// the platform during testing (ignoring gpuPlatform); do not forget to put back
// gpuPlatform before submitting!
GL.Finish();
// clear the screen
screen.Clear(0);
// do opencl stuff
if (GLInterop)
{
kernel.SetMemoryArgument(0, texBuffer);
}
else
{
kernel.SetMemoryArgument(0, buffer);
}
// execute kernel
//long[] workSize = { screen.width, screen.height };
long[] localSize = { 8, 12 };
long [] workSize = { screen.width , screen.height };
if (GLInterop)
{
List<ComputeMemory> c = new List<ComputeMemory>() { texBuffer };
queue.AcquireGLObjects(c, null);
queue.Execute(kernel, null, workSize, localSize, null);
queue.Finish();
queue.ReleaseGLObjects(c, null);
}
else
{
camera.Update();
gpuCamera = new GPUCamera(camera.pos, camera.p1, camera.p2, camera.p3, camera.up, camera.right, screen.width, screen.height, camera.lensSize);
float scale = 1.0f / (float)++spp;
kernel.SetValueArgument(2, gpuCamera);
kernel.SetValueArgument(3, scale);
queue.Execute(kernel, null, workSize, localSize, null);
queue.Finish();
// fetch results
if (!GLInterop)
{
queue.ReadFromBuffer(buffer, ref data, true, null);
// visualize result
for (int y = 0; y < screen.height; y++)
for (int x = 0; x < screen.width; x++)
{
int temp = x + y * screen.width;
screen.pixels[temp] = data[temp];
}
}
}
}
else
{
// this is your CPU only path
float scale = 1.0f / (float)++spp;
Parallel.For(0, dataArray.Length, parallelOptions, (id) =>
{
for (int j = dataArray[id].y1; j < dataArray[id].y2 && j < screen.height; j++)
{
for (int i = dataArray[id].x1; i < dataArray[id].x2 && i < screen.width; i++)
{
// generate primary ray
Ray ray = camera.Generate(RTTools.GetRNG(), i, j);
// trace path
int pixelIdx = i + j * screen.width;
accumulator[pixelIdx] += Sample(ray, 0);
// plot final color
screen.pixels[pixelIdx] = RTTools.Vector3ToIntegerRGB(scale * accumulator[pixelIdx]);
}
}
});
}
// stop and report when max render time elapsed
int elapsedSeconds = (int)(timer.ElapsedMilliseconds / 1000);
if (runningTime != -1) if (elapsedSeconds >= runningTime)
{
OpenTKApp.Report((int)timer.ElapsedMilliseconds, spp, screen);
}
}
