public OpenCLKernel(OpenCLProgram ocl, string kernelName)
{
// make a copy of the queue descriptor
queue = ocl.queue;
// load chosen kernel from program
kernel = ocl.program.CreateKernel(kernelName);
}
public OpenCLBuffer(OpenCLProgram ocl, uint length, int flags = ON_DEVICE + ON_HOST + READ_WRITE)
{
_queue = ocl.queue;
int clflags = 0;
if ((flags & READ_ONLY) > 0)
{
clflags += (int)ComputeMemoryFlags.ReadOnly;
}
if ((flags & WRITE_ONLY) > 0)
{
clflags += (int)ComputeMemoryFlags.WriteOnly;
}
if ((flags & READ_WRITE) > 0)
{
clflags += (int)ComputeMemoryFlags.ReadWrite;
}
if ((flags & ON_HOST) > 0)
{
_cpubuffer = new T[length];
clflags += (int)ComputeMemoryFlags.UseHostPointer;
}
if ((flags & ON_DEVICE) > 0)
{
_gpubuffer = new ComputeBuffer <T>(ocl.context, (ComputeMemoryFlags)clflags, _cpubuffer);
if ((flags & ON_HOST) > 0)
{
CopyToDevice();
}
}
}
public OpenCLImage(OpenCLProgram ocl, int width, int height)
{
texData = new T[width * height * 4];
OpenGLTextureID = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, OpenGLTextureID);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
Type itemType = typeof(T);
if (itemType == typeof(int))
{
// create an integer texture (RGBA8, 32bit per pixel)
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba8, width, height, 0, OpenTK.Graphics.OpenGL.PixelFormat.Rgb, PixelType.Int, texData);
}
else if (itemType == typeof(float))
{
// create a floating point texture (RGBA32, 128bit per pixel)
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba32f, width, height, 0, OpenTK.Graphics.OpenGL.PixelFormat.Rgb, PixelType.Float, texData);
}
else
{
ocl.FatalError("Unsupported OpenCLImage format");
}
texBuffer = ComputeImage2D.CreateFromGLTexture2D(ocl.context, ComputeMemoryFlags.WriteOnly, (int)TextureTarget.Texture2D, 0, OpenGLTextureID);
}
