1 //
2 // Copyright 2018 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6
7 // CurrentNormalTest.cpp: Tests basic usage of glNormal3(f|x).
8
9 #include "test_utils/ANGLETest.h"
10 #include "test_utils/gl_raii.h"
11
12 #include "util/random_utils.h"
13
14 #include "common/vector_utils.h"
15
16 #include <stdint.h>
17
18 using namespace angle;
19
20 class CurrentNormalTest : public ANGLETest<>
21 {
22 protected:
CurrentNormalTest()23 CurrentNormalTest()
24 {
25 setWindowWidth(32);
26 setWindowHeight(32);
27 setConfigRedBits(8);
28 setConfigGreenBits(8);
29 setConfigBlueBits(8);
30 setConfigAlphaBits(8);
31 setConfigDepthBits(24);
32 }
33 };
34
35 // State query: Checks the initial state is correct.
TEST_P(CurrentNormalTest,InitialState)36 TEST_P(CurrentNormalTest, InitialState)
37 {
38 const angle::Vector3 kUp(0.0f, 0.0f, 1.0f);
39 angle::Vector3 actualNormal;
40 glGetFloatv(GL_CURRENT_NORMAL, actualNormal.data());
41 EXPECT_GL_NO_ERROR();
42 EXPECT_EQ(kUp, actualNormal);
43 }
44
45 // Set test: Checks that the current normal is properly set and retrieved.
TEST_P(CurrentNormalTest,Set)46 TEST_P(CurrentNormalTest, Set)
47 {
48 glNormal3f(0.1f, 0.2f, 0.3f);
49 EXPECT_GL_NO_ERROR();
50
51 angle::Vector3 actualNormal;
52
53 glGetFloatv(GL_CURRENT_NORMAL, actualNormal.data());
54 EXPECT_GL_NO_ERROR();
55 EXPECT_EQ(angle::Vector3(0.1f, 0.2f, 0.3f), actualNormal);
56
57 float epsilon = 0.00001f;
58
59 glNormal3x(0x10000, 0x3333, 0x5555);
60 EXPECT_GL_NO_ERROR();
61
62 glGetFloatv(GL_CURRENT_NORMAL, actualNormal.data());
63 EXPECT_GL_NO_ERROR();
64 EXPECT_NEAR(1.0f, actualNormal[0], epsilon);
65 EXPECT_NEAR(0.2f, actualNormal[1], epsilon);
66 EXPECT_NEAR(1.0f / 3.0f, actualNormal[2], epsilon);
67 }
68
69 ANGLE_INSTANTIATE_TEST_ES1(CurrentNormalTest);
70