Tutorial by Examples: n

Lets build a kernel to generate a grayscale image. We will use image data which is defined using uints for each component and with order RGBA. __constant sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP_TO_EDGE | C...

Lets walk through the most simple kernel there is and some variations of it __kernel void myKernel() { } A kernel which can be started from your main code is identified by the __kernel keyword. A Kernel function can only have return type void. __kernel void myKernel(float a, uint b, byte c) { ...

To properly work with the data each thread needs to know its position in the threadblock/global thread pool. This can be archieved with get_local_id($dim); get_global_id($dim); Those two functions return the position of the thread relative to the threadblock or all threads. get_working_dim(); ...

Each fundamental opencl type has a vector version. You can use the vector type by appending the number of desired components after the type. Supported number of components are 2,3,4,8 and 16. OpenCL 1.0 does not offer three components. You can initialize any vector using two ways: Provide a sing...

Lets look at a gamma correction kernel __constant sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP_TO_EDGE | CLK_FILTER_LINEAR; __kernel void Gamma(__read_only image2d_t input, __write_only image2d_t output, __c...

Recent versions of Delphi ships with the TStopwatch record which is for time interval measurement. Example usage: uses System.Diagnostics; var StopWatch: TStopwatch; ElapsedMillseconds: Int64; begin StopWatch := TStopwatch.StartNew; // do something that requires measurement El...

DRF offers the chance to further customize the behavior of the generic views/viewsets by allowing the creation of custom mixins. How to: To define a custom mixin we just need to create a class inheriting from object. Let's assume that we want to define two separate views for a model named MyM...

To make your APK file as small as possible, you should enable shrinking to remove unused code and resources in your release build. This page describes how to do that and how to specify what code and resources to keep or discard during the build. Code shrinking is available with ProGuard, which dete...

An inner class which is visible to any outside class can be created from this class as well. The inner class depends on the outside class and requires a reference to an instance of it. To create an instance of the inner class, the new operator only needs to be called on an instance of the outer cla...

ember install ember-bootstrap

ember generate ember-bootstrap --bootstrap-version=4 --preprocessor=sass

npm install --save-dev ember-cli-sass ember install ember-cli-foundation-6-sass

ember g ember-cli-foundation-6-sass

// ember-cli-build.js /* global require, module */ var EmberApp = require('ember-cli/lib/broccoli/ember-app'); module.exports = function(defaults) { var app = new EmberApp(defaults, { // Add options here 'ember-cli-foundation-6-sass': { 'foundationJs': [ ...

1. Enable Flat Categories and Products One of the top reasons of Magento speed issues with database read speed. To fasten the read speed of the database you should enable Flat Catalog. This will minify the number of database joins done when showing products and due to that the MySQL query complexit...

To discovery all the available print services, we can use the PrintServiceLookup class. Let's see how: import javax.print.PrintService; import javax.print.PrintServiceLookup; public class DiscoveringAvailablePrintServices { public static void main(String[] args) { discoverPrintS...

To discovery the default print service, we can use the PrintServiceLookup class. Let's see how:: import javax.print.PrintService; import javax.print.PrintServiceLookup; public class DiscoveringDefaultPrintService { public static void main(String[] args) { discoverDefaultPrintSer...

A print job is a request of printing something in a specific print service. It consists, basically, by: the data that will be printed (see Building the Doc that will be printed) a set of attributes After picking-up the right print service instance, we can request the creation of a print job...

Doc is an interface and the Java Print Service API provide a simple implementation called SimpleDoc. Every Doc instance is basically made of two aspects: the print data content itself (an E-mail, an image, a document etc) the print data format, called DocFlavor (MIME type + Representation class...

Sometimes we need to determine some aspects of the print request. We will call them attribute. Are examples of print request attributes: amount of copies (1, 2 etc), orientation (portrait or landscape) chromacity (monochrome, color) quality (draft, normal, high) sides (one-sided, two-sided e...