//

// File:       DFView.h

//

// Abstract:   This example shows how to combine parallel computation on the CPU

//             via GCD with results processing and display on the GPU via OpenCL

//             and OpenGL. It computes escape-time fractals in parallel on the

//             global concurrent GCD queue and uses another GCD queue to upload

//             results to the GPU for processing via two OpenCL kernels. Calls to

//             OpenCL and OpenGL for display are serialized with a third GCD queue.

//

// Version:    <1.0>

//

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//  Copyright 2009 Apple Inc. All rights reserved.

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#import <Cocoa/Cocoa.h>

#import <QuartzCore/QuartzCore.h>

#import <OpenGL/OpenGL.h>

#import <OpenGL/gl.h>

#import <OpenCL/opencl.h>

#import <dispatch/dispatch.h>

@interface DFView : NSOpenGLView {

@private

    dispatch_queue_t openglqueue, openclqueue;

    dispatch_source_t fpstimer;

    CVDisplayLinkRef displayLink;

    GLuint texture, vertexBuffer, indexBuffer, selectionDisplayList;

    cl_context computeContext;

    cl_program computeProgram;

    cl_command_queue quadtreeCommandQueue, renderCommandQueue;

    cl_kernel quadtreeKernel, colorizeKernel;

    cl_mem quadtreeInputBuffer, quadtreeOutputBuffer[2];

    cl_mem colorizeInputBuffer, colorizeOutputBuffer;

    cl_mem renderImage, gradientBuffer;

    size_t quadtreeLength, dataLength, gradientLength, imageSize;

    size_t maxQuadtreeKernelWorkGroupSize, quadtreeKernelWorkGroupSize;

    size_t maxColorizeKernelWorkGroupSize, colorizeKernelWorkGroupSize;

    float *quadtreeData, *gradientComponents;

    unsigned int quadtreeBufferIndex, colorRoot;

    BOOL enabled, haveSelection, needsFlush, quadtreeDone, processing;

    BOOL cycling, refreshing, vSync, useDLink, useGLMPEngine;

    double cycleSpeed;

    long double cycleBase, tb_freq;

    volatile int64_t frames;

    uint64_t fpsStartTime;

    NSColor *col0, *col1, *col2, *col3, *col4;

    NSPoint selectionOrigin;

    NSRect selection;

    NSString *computeDevice;

    NSArray *observedKeys;

}

@property BOOL enabled, haveSelection, needsFlush, quadtreeDone, processing;

@property BOOL cycling, refreshing, vSync, useDLink, useGLMPEngine;

@property unsigned int quadtreeBufferIndex, colorRoot;

@property double cycleSpeed;

@property long double cycleBase;

@property(copy) NSColor *col0, *col1, *col2, *col3, *col4;

@property(retain) NSArray *observedKeys;

- (void)startQuadtreeProcessing:(float *)quadtree size:(unsigned long)size;

- (void)stopQuadtreeProcessing;

- (CGImageRef)createImage;

@end