1 //
2 // Copyright 2015 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 #include "test_utils/ANGLETest.h"
8
9 using namespace angle;
10
11 namespace
12 {
13
14 class UnpackRowLengthTest : public ANGLETest
15 {
16 protected:
UnpackRowLengthTest()17 UnpackRowLengthTest()
18 {
19 setWindowWidth(128);
20 setWindowHeight(128);
21 setConfigRedBits(8);
22 setConfigGreenBits(8);
23 setConfigBlueBits(8);
24 setConfigAlphaBits(8);
25 setConfigDepthBits(24);
26
27 mProgram = 0;
28 }
29
SetUp()30 void SetUp() override
31 {
32 ANGLETest::SetUp();
33
34 const std::string vertexShaderSource = SHADER_SOURCE
35 (
36 precision highp float;
37 attribute vec4 position;
38
39 void main()
40 {
41 gl_Position = position;
42 }
43 );
44
45 const std::string fragmentShaderSource = SHADER_SOURCE
46 (
47 uniform sampler2D tex;
48
49 void main()
50 {
51 gl_FragColor = texture2D(tex, vec2(0.0, 1.0));
52 }
53 );
54
55 mProgram = CompileProgram(vertexShaderSource, fragmentShaderSource);
56 if (mProgram == 0)
57 {
58 FAIL() << "shader compilation failed.";
59 }
60 }
61
TearDown()62 void TearDown() override
63 {
64 glDeleteProgram(mProgram);
65
66 ANGLETest::TearDown();
67 }
68
testRowLength(int texSize,int rowLength)69 void testRowLength(int texSize, int rowLength)
70 {
71 glPixelStorei(GL_UNPACK_ROW_LENGTH, rowLength);
72
73 if ((getClientMajorVersion() == 3) || extensionEnabled("GL_EXT_unpack_subimage"))
74 {
75 // Only texSize * texSize region is filled as WHITE, other parts are BLACK.
76 // If the UNPACK_ROW_LENGTH is implemented correctly, all texels inside this texture are WHITE.
77 std::vector<GLubyte> buf(rowLength * texSize * 4);
78 for (int y = 0; y < texSize; y++)
79 {
80 std::vector<GLubyte>::iterator rowIter = buf.begin() + y * rowLength * 4;
81 std::fill(rowIter, rowIter + texSize * 4, static_cast<GLubyte>(255u));
82 std::fill(rowIter + texSize * 4, rowIter + rowLength * 4, static_cast<GLubyte>(0u));
83 }
84
85 GLuint tex;
86 glGenTextures(1, &tex);
87 glBindTexture(GL_TEXTURE_2D, tex);
88
89 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texSize, texSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, &buf[0]);
90 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
91 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
92 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
93
94 drawQuad(mProgram, "position", 0.5f);
95
96 EXPECT_PIXEL_EQ(0, 0, 255, 255, 255, 255);
97 EXPECT_PIXEL_EQ(1, 0, 255, 255, 255, 255);
98
99 glDeleteTextures(1, &tex);
100 }
101 else
102 {
103 EXPECT_GL_ERROR(GL_INVALID_ENUM);
104 }
105 }
106
107 GLuint mProgram;
108 };
109
TEST_P(UnpackRowLengthTest,RowLength128)110 TEST_P(UnpackRowLengthTest, RowLength128)
111 {
112 testRowLength(128, 128);
113 }
114
TEST_P(UnpackRowLengthTest,RowLength1024)115 TEST_P(UnpackRowLengthTest, RowLength1024)
116 {
117 testRowLength(128, 1024);
118 }
119
120 // Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
121 ANGLE_INSTANTIATE_TEST(UnpackRowLengthTest,
122 ES3_D3D11(),
123 ES2_D3D11(),
124 ES2_D3D9(),
125 ES2_OPENGL(),
126 ES3_OPENGL(),
127 ES2_OPENGLES(),
128 ES3_OPENGLES());
129
130 } // namespace
131