初始化

vendor/h264-live-player/Shader.ts

@@ -0,0 +1,35 @@
+import Script from './Script';
+import error from './utils/error';
+
+export default class Shader {
+    public readonly shader?: WebGLShader | null;
+
+    constructor(readonly gl: WebGLRenderingContext, readonly script: Script) {
+        // Now figure out what type of shader script we have, based on its MIME type.
+        if (script.type === 'x-shader/x-fragment') {
+            this.shader = gl.createShader(gl.FRAGMENT_SHADER);
+        } else if (script.type === 'x-shader/x-vertex') {
+            this.shader = gl.createShader(gl.VERTEX_SHADER);
+        } else {
+            error(`Unknown shader type: ${script.type}`);
+            return;
+        }
+
+        if (!this.shader) {
+            error(`Shader is ${typeof this.shader}`);
+            return;
+        }
+
+        // Send the source to the shader object.
+        gl.shaderSource(this.shader, script.source);
+
+        // Compile the shader program.
+        gl.compileShader(this.shader);
+
+        // See if it compiled successfully.
+        if (!gl.getShaderParameter(this.shader, gl.COMPILE_STATUS)) {
+            error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(this.shader));
+            return;
+        }
+    }
+}