@lightningjs/renderer
Version:
Lightning 3 Renderer
51 lines • 1.95 kB
JavaScript
/*
* If not stated otherwise in this file or this component's LICENSE file the
* following copyright and licenses apply:
*
* Copyright 2023 Comcast Cable Communications Management, LLC.
*
* 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.
*/
//#endregion Types
export function createShader(glw, type, source) {
const shader = glw.createShader(type);
if (!shader) {
const glError = glw.getError();
throw new Error(`Unable to create the shader: ${type === glw.VERTEX_SHADER ? 'VERTEX_SHADER' : 'FRAGMENT_SHADER'}.${glError ? ` WebGlContext Error: ${glError}` : ''}`);
}
glw.shaderSource(shader, source);
glw.compileShader(shader);
const success = !!glw.getShaderParameter(shader, glw.COMPILE_STATUS);
if (success) {
return shader;
}
console.error(glw.getShaderInfoLog(shader));
glw.deleteShader(shader);
}
export function createProgram(glw, vertexShader, fragmentShader) {
const program = glw.createProgram();
if (!program) {
throw new Error('Unable to create program');
}
glw.attachShader(program, vertexShader);
glw.attachShader(program, fragmentShader);
glw.linkProgram(program);
const success = !!glw.getProgramParameter(program, glw.LINK_STATUS);
if (success) {
return program;
}
console.warn(glw.getProgramInfoLog(program));
glw.deleteProgram(program);
return undefined;
}
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