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What was the real reason why Google is chosing RenderScript instead of OpenCL?


What was the real reason why Google is chosing RenderScript instead of OpenCL?

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What was the real reason why Google is chosing RenderScript instead of OpenCL?
Tag : development , By : simonth
Date : November 26 2020, 01:01 AM


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Why did Google choose RenderScript instead of OpenCL


Tag : android , By : user87752
Date : March 29 2020, 07:55 AM
wish of those help The answer is that Android's needs are very different than what OpenCL tries to provide.
OpenCL uses the execution model first introduced in CUDA. In this model, a kernel is made up of one or many groups of workers, and each group has fast shared memory and synchronization primitives within that group. What this does is cause the description of an algorithm to be intermingled with how that algorithm should be scheduled on a particular architecture (because you're deciding the size of a group and when to synchronize within that group).

Renderscript, forEach_root, and porting from OpenCL


Tag : development , By : Jody Bannon
Date : March 29 2020, 07:55 AM
Hope that helps You can provide data apart from your root function. In the current android version (4.2) you could do the following (It is an example from an image processing scenario):
Renderscript snippet:
#pragma version(1)
#pragma rs java_package_name(com.example.renderscripttests)

//Define global variables in your renderscript:
rs_allocation pixels;
int width;
int height;

// And access these in your root function via rsGetElementAt(pixels, px, py)
void root(uchar4 *v_out, uint32_t x, uint32_t y)
{
    for(int px = 0; px < width; ++px)
        for(int py = 0; py < height; ++py)
        {
            // unpack a color to a float4
            float4 f4 = rsUnpackColor8888(*(uchar*)rsGetElementAt(pixels, px, py));
            ...
// In your java file, create a renderscript:
RenderScript renderscript = RenderScript.create(this);

ScriptC_myscript script = new ScriptC_myscript(renderscript);

// Create Allocations for in- and output (As input the bitmap 'bitmapIn' should be used):
Allocation pixelsIn = Allocation.createFromBitmap(renderscript, bitmapIn,
         Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
Allocation pixelsOut = Allocation.createTyped(renderscript, pixelsIn.getType());

// Set width, height and pixels in the script:
script.set_width(640);
script.set_height(480);
script.set_pixels(pixelsIn);

// Call the for each loop:
script.forEach_root(pixelsOut);

// Copy Allocation to the bitmap 'bitmapOut':
pixelsOut.copyTo(bitmapOut);

Renderscript Library Android Studio 3.3 Cannot find file sdk\build-tools\28.0.0\renderscript\lib\androidx-rs


Tag : android , By : Kbotei
Date : March 29 2020, 07:55 AM
Hope that helps I am adding this Question for people who may face similar problems. Name of the file is changed to renderscript-v8 in this update of build-tools. I fixed by renaming file back to androidx-rs from v8-renderscript

RenderScript Android Sample example RenderScript >HelloCompute is not compiling


Tag : android , By : Mark W
Date : March 29 2020, 07:55 AM

What could be the reason to not be able to use Math built-in functions in OpenCL? Should I use some directive to active?


Tag : development , By : scotta01
Date : March 29 2020, 07:55 AM
seems to work fine If you look at the OpenCL documentation for pow you will notice that it is defined as gentype pow(gentype x, gentype y). The document also states that
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