1 /*
2  * Copyright 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #pragma once
17 
18 #include <cassert>
19 #include <string>
20 
21 #include "Renderer.h"
22 
23 class Utility {
24 public:
25     static bool checkAndLogGlError(bool alwaysLog = false);
26 
assertGlError()27     static inline void assertGlError() { assert(checkAndLogGlError()); }
28 
29     /**
30      * Generates an orthographic projection matrix given the half height, aspect ratio, near, and
31      * far planes
32      *
33      * @param outMatrix the matrix to write into
34      * @param halfHeight half of the height of the screen
35      * @param aspect the width of the screen divided by the height
36      * @param near the distance of the near plane
37      * @param far the distance of the far plane
38      * @return the generated matrix, this will be the same as @a outMatrix so you can chain calls
39      *     together if needed
40      */
41     static float *buildOrthographicMatrix(float *outMatrix, float halfHeight, float aspect,
42                                           float near, float far);
43 
44     static float *buildIdentityMatrix(float *outMatrix);
45 
46     static void setFailure(std::string message, Renderer *renderer = nullptr);
47 };
48