Geoff Lang | 0ddab0c | 2013-10-23 13:24:41 -0400 | [diff] [blame] | 1 | #include "ANGLETest.h" |
| 2 | |
| 3 | #include <vector> |
| 4 | |
| 5 | class IncompleteTextureTest : public ANGLETest |
| 6 | { |
| 7 | protected: |
| 8 | IncompleteTextureTest() |
| 9 | { |
| 10 | setWindowWidth(128); |
| 11 | setWindowHeight(128); |
| 12 | setConfigRedBits(8); |
| 13 | setConfigGreenBits(8); |
| 14 | setConfigBlueBits(8); |
| 15 | setConfigAlphaBits(8); |
| 16 | } |
| 17 | |
| 18 | virtual void SetUp() |
| 19 | { |
| 20 | ANGLETest::SetUp(); |
| 21 | |
| 22 | const std::string vertexShaderSource = SHADER_SOURCE |
| 23 | ( |
| 24 | precision highp float; |
| 25 | attribute vec4 position; |
| 26 | varying vec2 texcoord; |
| 27 | |
| 28 | void main() |
| 29 | { |
| 30 | gl_Position = position; |
| 31 | texcoord = (position.xy * 0.5) + 0.5; |
| 32 | } |
| 33 | ); |
| 34 | |
| 35 | const std::string fragmentShaderSource = SHADER_SOURCE |
| 36 | ( |
| 37 | precision highp float; |
| 38 | uniform sampler2D tex; |
| 39 | varying vec2 texcoord; |
| 40 | |
| 41 | void main() |
| 42 | { |
| 43 | gl_FragColor = texture2D(tex, texcoord); |
| 44 | } |
| 45 | ); |
| 46 | |
Jamie Madill | 5599c8f | 2014-08-26 13:16:39 -0400 | [diff] [blame] | 47 | mProgram = CompileProgram(vertexShaderSource, fragmentShaderSource); |
Geoff Lang | 0ddab0c | 2013-10-23 13:24:41 -0400 | [diff] [blame] | 48 | if (mProgram == 0) |
| 49 | { |
| 50 | FAIL() << "shader compilation failed."; |
| 51 | } |
| 52 | |
| 53 | mTextureUniformLocation = glGetUniformLocation(mProgram, "tex"); |
| 54 | } |
| 55 | |
| 56 | virtual void TearDown() |
| 57 | { |
| 58 | glDeleteProgram(mProgram); |
| 59 | |
| 60 | ANGLETest::TearDown(); |
| 61 | } |
| 62 | |
| 63 | void fillTextureData(std::vector<GLubyte> &buffer, GLubyte r, GLubyte g, GLubyte b, GLubyte a) |
| 64 | { |
| 65 | size_t count = buffer.size() / 4; |
| 66 | for (size_t i = 0; i < count; i++) |
| 67 | { |
| 68 | buffer[i * 4 + 0] = r; |
| 69 | buffer[i * 4 + 1] = g; |
| 70 | buffer[i * 4 + 2] = b; |
| 71 | buffer[i * 4 + 3] = a; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | GLuint mProgram; |
| 76 | GLint mTextureUniformLocation; |
| 77 | }; |
| 78 | |
Jamie Madill | b759a74 | 2014-07-17 10:40:49 -0400 | [diff] [blame] | 79 | TEST_F(IncompleteTextureTest, IncompleteTexture2D) |
Geoff Lang | 0ddab0c | 2013-10-23 13:24:41 -0400 | [diff] [blame] | 80 | { |
| 81 | GLuint tex; |
| 82 | glGenTextures(1, &tex); |
| 83 | glActiveTexture(GL_TEXTURE0); |
| 84 | glBindTexture(GL_TEXTURE_2D, tex); |
| 85 | |
| 86 | glUseProgram(mProgram); |
| 87 | glUniform1i(mTextureUniformLocation, 0); |
| 88 | |
| 89 | const GLsizei textureWidth = 2; |
| 90 | const GLsizei textureHeight = 2; |
| 91 | std::vector<GLubyte> textureData(textureWidth * textureHeight * 4); |
| 92 | fillTextureData(textureData, 255, 0, 0, 255); |
| 93 | |
| 94 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, textureWidth, textureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData.data()); |
| 95 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| 96 | |
| 97 | drawQuad(mProgram, "position", 0.5f); |
| 98 | EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255); |
| 99 | |
| 100 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); |
| 101 | |
| 102 | drawQuad(mProgram, "position", 0.5f); |
| 103 | EXPECT_PIXEL_EQ(0, 0, 0, 0, 0, 255); |
| 104 | |
| 105 | glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, textureWidth >> 1, textureHeight >> 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData.data()); |
| 106 | |
| 107 | drawQuad(mProgram, "position", 0.5f); |
| 108 | EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255); |
| 109 | |
| 110 | glDeleteTextures(1, &tex); |
| 111 | } |
| 112 | |
Jamie Madill | b759a74 | 2014-07-17 10:40:49 -0400 | [diff] [blame] | 113 | TEST_F(IncompleteTextureTest, UpdateTexture) |
Geoff Lang | 0ddab0c | 2013-10-23 13:24:41 -0400 | [diff] [blame] | 114 | { |
| 115 | GLuint tex; |
| 116 | glGenTextures(1, &tex); |
| 117 | glActiveTexture(GL_TEXTURE0); |
| 118 | glBindTexture(GL_TEXTURE_2D, tex); |
| 119 | |
| 120 | glUseProgram(mProgram); |
| 121 | glUniform1i(mTextureUniformLocation, 0); |
| 122 | |
| 123 | const GLsizei redTextureWidth = 64; |
| 124 | const GLsizei redTextureHeight = 64; |
| 125 | std::vector<GLubyte> redTextureData(redTextureWidth * redTextureHeight * 4); |
| 126 | fillTextureData(redTextureData, 255, 0, 0, 255); |
| 127 | for (size_t i = 0; i < 7; i++) |
| 128 | { |
Jamie Madill | f67115c | 2014-04-22 13:14:05 -0400 | [diff] [blame] | 129 | glTexImage2D(GL_TEXTURE_2D, i, GL_RGBA, redTextureWidth >> i, redTextureHeight >> i, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
Geoff Lang | 0ddab0c | 2013-10-23 13:24:41 -0400 | [diff] [blame] | 130 | redTextureData.data()); |
| 131 | } |
| 132 | |
| 133 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| 134 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| 135 | |
| 136 | drawQuad(mProgram, "position", 0.5f); |
| 137 | EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255); |
| 138 | |
| 139 | const GLsizei greenTextureWidth = 32; |
| 140 | const GLsizei greenTextureHeight = 32; |
| 141 | std::vector<GLubyte> greenTextureData(greenTextureWidth * greenTextureHeight * 4); |
| 142 | fillTextureData(greenTextureData, 0, 255, 0, 255); |
| 143 | |
| 144 | for (size_t i = 0; i < 6; i++) |
| 145 | { |
Jamie Madill | f67115c | 2014-04-22 13:14:05 -0400 | [diff] [blame] | 146 | glTexSubImage2D(GL_TEXTURE_2D, i, greenTextureWidth >> i, greenTextureHeight >> i, |
Geoff Lang | 0ddab0c | 2013-10-23 13:24:41 -0400 | [diff] [blame] | 147 | greenTextureWidth >> i, greenTextureHeight >> i, GL_RGBA, GL_UNSIGNED_BYTE, |
| 148 | greenTextureData.data()); |
| 149 | } |
| 150 | |
| 151 | drawQuad(mProgram, "position", 0.5f); |
| 152 | EXPECT_PIXEL_EQ(getWindowWidth() - greenTextureWidth, getWindowHeight() - greenTextureWidth, 0, 255, 0, 255); |
| 153 | |
| 154 | glDeleteTextures(1, &tex); |
| 155 | } |