Add shader prep utils

src/shaders.ts

@@ -0,0 +1,31 @@
+export function loadShader(gl: WebGLRenderingContext, type: GLenum, source: string) {
+  const shader = gl.createShader(type);
+  if (!shader) {
+    throw new Error("WebGL fails to create shader for given type");
+  }
+
+  gl.shaderSource(shader, source);
+  gl.compileShader(shader);
+
+  if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+    const compileError = gl.getShaderInfoLog(shader);
+    throw new Error("Error when compiling shader: " + compileError);
+  }
+}
+
+
+export function loadProgram(gl: WebGLRenderingContext, vertexShader: WebGLShader, fragmentShader: WebGLShader) {
+  const program = gl.createProgram();
+  if (!program) {
+    throw new Error("WebGL fails to create program");
+  }
+
+  gl.attachShader(program, vertexShader);
+  gl.attachShader(program, fragmentShader);
+  gl.linkProgram(program);
+
+  if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+    const linkError = gl.getProgramInfoLog(program);
+    throw new Error("Error when linking program: " + linkError);
+  }
+}