Attachment 121124 Details for Bug 93748 – GenerateNoiseImage kernel

GenerateNoiseImage kernel

file_93748.txt (text/plain), 2.35 KB, created by nixscripter on 2016-01-19 02:33:51 UTC

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Creator: nixscripter

Created: 2016-01-19 02:33:51 UTC

Size: 2.35 KB

patch

obsolete

>  __kernel
>  void GenerateNoiseImage(const __global CLPixelType* inputImage, __global CLPixelType* filteredImage
>                    ,const unsigned int inputPixelCount, const unsigned int pixelsPerWorkItem
>                    ,const ChannelType channel 
>                    ,const NoiseType noise_type, const float attenuate
>                    ,const unsigned int seed0, const unsigned int seed1
>                                        ,const unsigned int numRandomNumbersPerPixel) {
>
>        mwc64x_state_t rng;
>        rng.x = seed0;
>        rng.c = seed1;
>
>        uint span = pixelsPerWorkItem * numRandomNumbersPerPixel;       // length of RNG substream each workitem will use
>        uint offset = span * get_local_size(0) * get_group_id(0);       // offset of this workgroup's RNG substream (in master stream);
>
>        MWC64X_SeedStreams(&rng, offset, span);                                         // Seed the RNG streams
>
>        uint pos = get_local_size(0) * get_group_id(0) * pixelsPerWorkItem + get_local_id(0);   // pixel to process
>
>        uint count = pixelsPerWorkItem;
>
>        while (count > 0) {
>                if (pos < inputPixelCount) {
>                        CLPixelType p = inputImage[pos];
>
>                        if ((channel&RedChannel)!=0) {
>                          setRed(&p,ClampToQuantum(mwcGenerateDifferentialNoise(&rng,getRed(p),noise_type,attenuate)));
>                        }
>    
>                        if ((channel&GreenChannel)!=0) {
>                          setGreen(&p,ClampToQuantum(mwcGenerateDifferentialNoise(&rng,getGreen(p),noise_type,attenuate)));
>                        }
>
>                        if ((channel&BlueChannel)!=0) {
>                          setBlue(&p,ClampToQuantum(mwcGenerateDifferentialNoise(&rng,getBlue(p),noise_type,attenuate)));
>                        }
>
>                        if ((channel & OpacityChannel) != 0) {
>                          setOpacity(&p,ClampToQuantum(mwcGenerateDifferentialNoise(&rng,getOpacity(p),noise_type,attenuate)));
>                        }
>
>                        filteredImage[pos] = p;
>                        //filteredImage[pos] = (CLPixelType)(MWC64X_NextUint(&rng) % 256, MWC64X_NextUint(&rng) % 256, MWC64X_NextUint(&rng) % 256, 255);
>                }
>                pos += get_local_size(0);
>                --count;
>        }
>  }

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Attachments on bug 93748: 121096 | 121124 | 124178

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