dreemgl
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DreemGL is an open-source multi-screen prototyping framework for mediated environments, with a visual editor and shader styling for webGL and DALi runtimes written in JavaScript. As a toolkit for gpu-accelerated multiscreen development, DreemGL includes
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<td class="code"><pre><span class="comment">/* DreemGL is a collaboration between Teeming Society & Samsung Electronics, sponsored by Samsung and others.
Copyright 2015-2016 Teeming Society. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License.
You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and limitations under the License.*/</span>
<span class="comment">/**
* @class HeadlessShader
* Simulate a shader
* Modeled from DALi platform.
*/</span>
define.<span class="reserved">class</span>(<span class="keyword">function</span>(require, exports){
<span class="comment">// internal, HeadlessApi is a static object to access the headless api</span>
HeadlessApi = require(<span class="string"><span class="delimiter">'</span><span class="content">./headless_api</span><span class="delimiter">'</span></span>)
<span class="comment">// Assign a unique id to each headlessshader object</span>
<span class="keyword">var</span> HeadlessShader = exports
HeadlessShader.GlobalId = <span class="integer">0</span>
<span class="comment">/**
* @method constructor
* Create a headless.Shader object
* You can access the headless.Shader object as this.headlessshader
* @param {string} vertexShader VertexShader code
* @param {string} fragmentShader FragmentShader code
*/</span>
<span class="local-variable">this</span>.<span class="function">atConstructor</span> = <span class="keyword">function</span>(vertexShader, fragmentShader) {
<span class="local-variable">this</span>.object_type = <span class="string"><span class="delimiter">'</span><span class="content">HeadlessShader</span><span class="delimiter">'</span></span>
<span class="comment">// Simplify the shader by removing comments and empty lines</span>
<span class="keyword">var</span> vs = <span class="local-variable">this</span>.trimShader(vertexShader);
<span class="keyword">var</span> fs = <span class="local-variable">this</span>.trimShader(fragmentShader);
<span class="keyword">var</span> shaderOptions = {
<span class="key">vertexShader</span> : vs,
<span class="key">fragmentShader</span>: fs
};
<span class="keyword">var</span> headless = HeadlessApi.headless;
<span class="local-variable">this</span>.id = ++HeadlessShader.GlobalId;
<span class="local-variable">this</span>.vertexshader = vertexShader;
<span class="local-variable">this</span>.fragmentshader = fragmentShader;
}
<span class="comment">// Internal method to remove comments and empty lines from a shader. This</span>
<span class="comment">// is to prevent issues when the headlesscode is replayed.</span>
<span class="local-variable">this</span>.<span class="function">trimShader</span> = <span class="keyword">function</span>(code) {
<span class="keyword">var</span> str = code;
<span class="comment">// Remove blank lines</span>
str = str.replace(<span class="regexp"><span class="delimiter">/</span><span class="char">\n</span><span class="char">\n</span><span class="delimiter">/</span><span class="modifier">g</span></span>, <span class="string"><span class="delimiter">"</span><span class="char">\\</span><span class="content">n</span><span class="delimiter">"</span></span>);
<span class="comment">// Remove comments</span>
<span class="comment">//var str = code.replace(//*.+?*/|//.*(?=[nr])/g, '');</span>
str = str.replace(<span class="regexp"><span class="delimiter">/</span><span class="content">\/</span><span class="content">\/</span><span class="content">.*</span><span class="char">\n</span><span class="delimiter">/</span><span class="modifier">g</span></span>, <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>);
<span class="comment">// Remove trailing new line</span>
<span class="keyword">if</span> (str[str.length-<span class="integer">1</span>] == <span class="string"><span class="delimiter">"</span><span class="char">\n</span><span class="delimiter">"</span></span>)
str = str.substring(<span class="integer">0</span>, str.length-<span class="integer">1</span>);
<span class="comment">// Remove new lines</span>
str = str.replace(<span class="regexp"><span class="delimiter">/</span><span class="char">\n</span><span class="delimiter">/</span><span class="modifier">g</span></span>, <span class="string"><span class="delimiter">"</span><span class="char">\\</span><span class="content">n</span><span class="delimiter">"</span></span>);
<span class="comment">// Create a multi-line string</span>
str = str.replace(<span class="regexp"><span class="delimiter">/</span><span class="char">\\</span><span class="content">n</span><span class="delimiter">/</span><span class="modifier">g</span></span>, <span class="string"><span class="delimiter">"</span><span class="char">\\</span><span class="char">\n</span><span class="delimiter">"</span></span>);
<span class="keyword">return</span> str;
}
<span class="local-variable">this</span>.<span class="function">name</span> = <span class="keyword">function</span>() {
<span class="keyword">return</span> <span class="string"><span class="delimiter">'</span><span class="content">headlessshader</span><span class="delimiter">'</span></span> + <span class="local-variable">this</span>.id;
}
<span class="local-variable">this</span>.<span class="function">currentstate</span> = <span class="keyword">function</span>(verbose) {
<span class="keyword">var</span> states = [];
<span class="keyword">if</span> (!HeadlessApi.isShown(<span class="local-variable">this</span>.name())) {
<span class="keyword">var</span> state = [
{<span class="key">name</span>: <span class="local-variable">this</span>.name()},
,{<span class="key">vertexshader</span>: verbose ? <span class="local-variable">this</span>.vertexshader : HeadlessApi.getHash(<span class="local-variable">this</span>.vertexshader)}
,{<span class="key">fragmentShader</span>: verbose ? <span class="local-variable">this</span>.fragmentshader : HeadlessApi.getHash(<span class="local-variable">this</span>.fragmentshader)}
]
states = [state];
HeadlessApi.shownObject(<span class="local-variable">this</span>.name());
}
<span class="keyword">return</span> states;
}
<span class="local-variable">this</span>.<span class="function">inspect</span> = <span class="keyword">function</span>(depth) {
<span class="keyword">var</span> obj = {<span class="key">headlessShader</span>:<span class="local-variable">this</span>.id, <span class="key">vertex</span>:<span class="local-variable">this</span>.vertexshader.length, <span class="key">fragment</span>:<span class="local-variable">this</span>.fragmentshader.length};
<span class="keyword">var</span> util = require(<span class="string"><span class="delimiter">'</span><span class="content">util</span><span class="delimiter">'</span></span>)
<span class="keyword">return</span> util.inspect(obj, {<span class="key">depth</span>: <span class="predefined-constant">null</span>});
}
});
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