| // |
| // Copyright 2015 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| #include "ANGLETest.h" |
| |
| using namespace angle; |
| |
| class MipmapTest : public ANGLETest |
| { |
| protected: |
| MipmapTest() |
| { |
| setWindowWidth(128); |
| setWindowHeight(128); |
| setConfigRedBits(8); |
| setConfigGreenBits(8); |
| setConfigBlueBits(8); |
| setConfigAlphaBits(8); |
| } |
| |
| virtual void SetUp() |
| { |
| ANGLETest::SetUp(); |
| |
| // Vertex Shader source |
| const std::string vs = SHADER_SOURCE |
| ( |
| attribute vec4 aPosition; |
| attribute vec2 aTexCoord; |
| varying vec2 vTexCoord; |
| |
| void main() |
| { |
| gl_Position = aPosition; |
| vTexCoord = aTexCoord; |
| } |
| ); |
| |
| // Fragment Shader source |
| const std::string fs = SHADER_SOURCE |
| ( |
| precision mediump float; |
| |
| uniform sampler2D uTexture; |
| varying vec2 vTexCoord; |
| |
| void main() |
| { |
| gl_FragColor = texture2D(uTexture, vTexCoord); |
| } |
| ); |
| |
| m2DProgram = CompileProgram(vs, fs); |
| if (m2DProgram == 0) |
| { |
| FAIL() << "shader compilation failed."; |
| } |
| |
| // A simple vertex shader for the texture cube |
| const std::string cubeVS = SHADER_SOURCE |
| ( |
| attribute vec4 aPosition; |
| varying vec4 vPosition; |
| void main() |
| { |
| gl_Position = aPosition; |
| vPosition = aPosition; |
| } |
| ); |
| |
| // A very simple fragment shader to sample from the negative-Y face of a texture cube. |
| const std::string cubeFS = SHADER_SOURCE |
| ( |
| precision mediump float; |
| uniform samplerCube uTexture; |
| varying vec4 vPosition; |
| |
| void main() |
| { |
| gl_FragColor = textureCube(uTexture, vec3(vPosition.x, -1, vPosition.y)); |
| } |
| ); |
| |
| mCubeProgram = CompileProgram(cubeVS, cubeFS); |
| if (mCubeProgram == 0) |
| { |
| FAIL() << "shader compilation failed."; |
| } |
| |
| m2DTextureUniformPosition = glGetUniformLocation(m2DProgram, "uTexture"); |
| m2DPositionAttributePosition = glGetAttribLocation(m2DProgram, "aPosition"); |
| m2DTexCoordAttributePosition = glGetAttribLocation(m2DProgram, "aTexCoord"); |
| |
| mLevelZeroBlueInitData = createRGBInitData(getWindowWidth(), getWindowHeight(), 0, 0, 255); // Blue |
| mLevelZeroWhiteInitData = createRGBInitData(getWindowWidth(), getWindowHeight(), 255, 255, 255); // White |
| mLevelOneInitData = createRGBInitData((getWindowWidth() / 2), (getWindowHeight() / 2), 0, 255, 0); // Green |
| mLevelTwoInitData = createRGBInitData((getWindowWidth() / 4), (getWindowHeight() / 4), 255, 0, 0); // Red |
| |
| glGenFramebuffers(1, &mOffscreenFramebuffer); |
| glGenTextures(1, &mOffscreenTexture2D); |
| |
| // Initialize the texture2D to be empty, and don't use mips. |
| glBindTexture(GL_TEXTURE_2D, mOffscreenTexture2D); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| |
| // Bind the texture2D to the offscreen framebuffer's color buffer. |
| glBindFramebuffer(GL_FRAMEBUFFER, mOffscreenFramebuffer); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mOffscreenTexture2D, 0); |
| ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE); |
| |
| // Create a non-mipped texture cube. Set the negative-Y face to be blue. |
| glGenTextures(1, &mOffscreenTextureCube); |
| glBindTexture(GL_TEXTURE_CUBE_MAP, mOffscreenTextureCube); |
| glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); |
| glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); |
| glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); |
| glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, mLevelZeroBlueInitData); |
| glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); |
| glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); |
| |
| // Complete the texture cube without mipmaps to start with. |
| glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| |
| ASSERT_GL_NO_ERROR(); |
| } |
| |
| virtual void TearDown() |
| { |
| glDeleteProgram(m2DProgram); |
| glDeleteProgram(mCubeProgram); |
| glDeleteFramebuffers(1, &mOffscreenFramebuffer); |
| glDeleteTextures(1, &mOffscreenTexture2D); |
| glDeleteTextures(1, &mOffscreenTextureCube); |
| |
| delete mLevelZeroBlueInitData; |
| delete mLevelZeroWhiteInitData; |
| delete mLevelOneInitData; |
| delete mLevelTwoInitData; |
| |
| ANGLETest::TearDown(); |
| } |
| |
| GLubyte *createRGBInitData(GLint width, GLint height, GLint r, GLint g, GLint b) |
| { |
| GLubyte *data = new GLubyte[3 * width * height]; |
| |
| for (int i = 0; i < width * height; i+=1) |
| { |
| data[3 * i + 0] = static_cast<GLubyte>(r); |
| data[3 * i + 1] = static_cast<GLubyte>(g); |
| data[3 * i + 2] = static_cast<GLubyte>(b); |
| } |
| |
| return data; |
| } |
| |
| void ClearAndDrawTexturedQuad(GLuint texture, GLsizei viewportWidth, GLsizei viewportHeight) |
| { |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| glViewport(0, 0, viewportWidth, viewportHeight); |
| |
| ASSERT_GL_NO_ERROR(); |
| |
| GLfloat vertexLocations[] = |
| { |
| -1.0f, 1.0f, 0.0f, |
| -1.0f, -1.0f, 0.0f, |
| 1.0f, 1.0f, 0.0f, |
| 1.0f, -1.0f, 0.0f, |
| }; |
| |
| GLfloat vertexTexCoords[] = |
| { |
| 0.0f, 1.0f, |
| 0.0f, 0.0f, |
| 1.0f, 1.0f, |
| 1.0f, 0.0f, |
| }; |
| |
| glUseProgram(m2DProgram); |
| |
| glActiveTexture(GL_TEXTURE0); |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glUniform1i(m2DTextureUniformPosition, 0); |
| |
| glVertexAttribPointer(m2DPositionAttributePosition, 3, GL_FLOAT, GL_FALSE, 0, vertexLocations); |
| glEnableVertexAttribArray(m2DPositionAttributePosition); |
| |
| glVertexAttribPointer(m2DTexCoordAttributePosition, 2, GL_FLOAT, GL_FALSE, 0, vertexTexCoords); |
| glEnableVertexAttribArray(m2DTexCoordAttributePosition); |
| |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| } |
| |
| GLuint m2DProgram; |
| GLuint mCubeProgram; |
| GLuint mOffscreenFramebuffer; |
| GLuint mOffscreenTexture2D; |
| GLuint mOffscreenTextureCube; |
| |
| GLint m2DTextureUniformPosition; |
| GLint m2DPositionAttributePosition; |
| GLint m2DTexCoordAttributePosition; |
| |
| GLubyte* mLevelZeroBlueInitData; |
| GLubyte* mLevelZeroWhiteInitData; |
| GLubyte* mLevelOneInitData; |
| GLubyte* mLevelTwoInitData; |
| }; |
| |
| class MipmapTestES3 : public ANGLETest |
| { |
| protected: |
| MipmapTestES3() |
| { |
| setWindowWidth(128); |
| setWindowHeight(128); |
| setConfigRedBits(8); |
| setConfigGreenBits(8); |
| setConfigBlueBits(8); |
| setConfigAlphaBits(8); |
| } |
| |
| virtual void SetUp() |
| { |
| ANGLETest::SetUp(); |
| |
| glGenTextures(1, &mTextureArray); |
| EXPECT_GL_NO_ERROR(); |
| |
| ASSERT_GL_NO_ERROR(); |
| |
| // Don't put "#version ..." on its own line. See [cpp]p1: |
| // "If there are sequences of preprocessing tokens within the list of arguments that |
| // would otherwise act as preprocessing directives, the behavior is undefined" |
| const std::string vertexShaderSource = SHADER_SOURCE |
| ( #version 300 es\n |
| precision highp float; |
| in vec4 position; |
| out vec2 texcoord; |
| |
| uniform vec2 textureScale; |
| |
| void main() |
| { |
| gl_Position = vec4(position.xy * textureScale, 0.0, 1.0); |
| texcoord = (position.xy * 0.5) + 0.5; |
| } |
| ); |
| |
| const std::string fragmentShaderSourceArray = SHADER_SOURCE |
| ( #version 300 es\n |
| precision highp float; |
| uniform sampler2DArray tex; |
| uniform int slice; |
| in vec2 texcoord; |
| out vec4 out_FragColor; |
| |
| void main() |
| { |
| out_FragColor = texture(tex, vec3(texcoord, float(slice))); |
| } |
| ); |
| |
| mArrayProgram = CompileProgram(vertexShaderSource, fragmentShaderSourceArray); |
| if (mArrayProgram == 0) |
| { |
| FAIL() << "shader compilation failed."; |
| } |
| |
| mTextureArrayUniformLocation = glGetUniformLocation(mArrayProgram, "tex"); |
| ASSERT_NE(-1, mTextureArrayUniformLocation); |
| |
| mTextureArrayScaleUniformLocation = glGetUniformLocation(mArrayProgram, "textureScale"); |
| ASSERT_NE(-1, mTextureArrayScaleUniformLocation); |
| |
| mTextureArraySliceUniformLocation = glGetUniformLocation(mArrayProgram, "slice"); |
| ASSERT_NE(-1, mTextureArraySliceUniformLocation); |
| |
| glUseProgram(mArrayProgram); |
| glUniform2f(mTextureArrayScaleUniformLocation, 1.0f, 1.0f); |
| glUseProgram(0); |
| ASSERT_GL_NO_ERROR(); |
| |
| glGenTextures(1, &mTexture3D); |
| |
| ASSERT_GL_NO_ERROR(); |
| |
| const std::string fragmentShaderSource3D = SHADER_SOURCE |
| ( #version 300 es\n |
| precision highp float; |
| uniform sampler3D tex; |
| uniform float slice; |
| uniform float lod; |
| in vec2 texcoord; |
| out vec4 out_FragColor; |
| |
| void main() |
| { |
| out_FragColor = textureLod(tex, vec3(texcoord, slice), lod); |
| } |
| ); |
| |
| m3DProgram = CompileProgram(vertexShaderSource, fragmentShaderSource3D); |
| if (m3DProgram == 0) |
| { |
| FAIL() << "shader compilation failed."; |
| } |
| |
| mTexture3DUniformLocation = glGetUniformLocation(m3DProgram, "tex"); |
| ASSERT_NE(-1, mTexture3DUniformLocation); |
| |
| mTexture3DScaleUniformLocation = glGetUniformLocation(m3DProgram, "textureScale"); |
| ASSERT_NE(-1, mTexture3DScaleUniformLocation); |
| |
| mTexture3DSliceUniformLocation = glGetUniformLocation(m3DProgram, "slice"); |
| ASSERT_NE(-1, mTexture3DSliceUniformLocation); |
| |
| mTexture3DLODUniformLocation = glGetUniformLocation(m3DProgram, "lod"); |
| ASSERT_NE(-1, mTexture3DLODUniformLocation); |
| |
| glUseProgram(m3DProgram); |
| glUniform2f(mTexture3DScaleUniformLocation, 1.0f, 1.0f); |
| glUniform1f(mTexture3DLODUniformLocation, 0); |
| glUseProgram(0); |
| ASSERT_GL_NO_ERROR(); |
| } |
| |
| virtual void TearDown() |
| { |
| glDeleteTextures(1, &mTextureArray); |
| glDeleteProgram(mArrayProgram); |
| |
| glDeleteTextures(1, &mTexture3D); |
| glDeleteProgram(m3DProgram); |
| |
| ANGLETest::TearDown(); |
| } |
| |
| GLuint mTextureArray; |
| GLuint mTexture3D; |
| |
| GLuint mArrayProgram; |
| GLint mTextureArrayUniformLocation; |
| GLint mTextureArrayScaleUniformLocation; |
| GLint mTextureArraySliceUniformLocation; |
| |
| GLuint m3DProgram; |
| GLint mTexture3DUniformLocation; |
| GLint mTexture3DScaleUniformLocation; |
| GLint mTexture3DSliceUniformLocation; |
| GLint mTexture3DLODUniformLocation; |
| }; |
| |
| // This test uses init data for the first three levels of the texture. It passes the level 0 data in, then renders, then level 1, then renders, etc. |
| // This ensures that renderers using the zero LOD workaround (e.g. D3D11 FL9_3) correctly pass init data to the mipmapped texture, |
| // even if the the zero-LOD texture is currently in use. |
| TEST_P(MipmapTest, DISABLED_ThreeLevelsInitData) |
| { |
| // Pass in level zero init data. |
| glBindTexture(GL_TEXTURE_2D, mOffscreenTexture2D); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, mLevelZeroBlueInitData); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Disable mips. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| |
| // Draw a full-sized quad, and check it's blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Draw a half-sized quad, and check it's blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255); |
| |
| // Draw a quarter-sized quad, and check it's blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 255, 255); |
| |
| // Complete the texture by initializing the remaining levels. |
| int n = 1; |
| while (getWindowWidth() / (1U << n) >= 1) |
| { |
| glTexImage2D(GL_TEXTURE_2D, n, GL_RGB, getWindowWidth() / (1U << n), getWindowWidth() / (1U << n), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); |
| ASSERT_GL_NO_ERROR(); |
| n+=1; |
| } |
| |
| // Pass in level one init data. |
| glTexImage2D(GL_TEXTURE_2D, 1, GL_RGB, getWindowWidth() / 2, getWindowHeight() / 2, 0, GL_RGB, GL_UNSIGNED_BYTE, mLevelOneInitData); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Draw a full-sized quad, and check it's blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Draw a half-sized quad, and check it's blue. We've not enabled mipmaps yet, so our init data for level one shouldn't be used. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255); |
| |
| // Enable mipmaps. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| |
| // Draw a half-sized quad, and check it's green. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255); |
| |
| // Draw a quarter-sized quad, and check it's black, since we've not passed any init data for level two. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 0, 255); |
| |
| // Pass in level two init data. |
| glTexImage2D(GL_TEXTURE_2D, 2, GL_RGB, getWindowWidth() / 4, getWindowHeight() / 4, 0, GL_RGB, GL_UNSIGNED_BYTE, mLevelTwoInitData); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Draw a full-sized quad, and check it's blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Draw a half-sized quad, and check it's green. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255); |
| |
| // Draw a quarter-sized quad, and check it's red. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 255, 0, 0, 255); |
| |
| // Now disable mipmaps again, and render multiple sized quads. They should all be blue, since level 0 is blue. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 255, 255); |
| |
| // Now reset level 0 to white, keeping mipmaps disabled. Then, render various sized quads. They should be white. |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, mLevelZeroWhiteInitData); |
| ASSERT_GL_NO_ERROR(); |
| |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 255, 255, 255, 255); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 255, 255, 255, 255); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 255, 255, 255, 255); |
| |
| // Then enable mipmaps again. The quads should be white, green, red respectively. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 255, 255, 255, 255); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 255, 0, 0, 255); |
| } |
| |
| // This test generates (and uses) mipmaps on a texture using init data. D3D11 will use a non-renderable TextureStorage for this. |
| // The test then disables mips, renders to level zero of the texture, and reenables mips before using the texture again. |
| // To do this, D3D11 has to convert the TextureStorage into a renderable one. |
| // This test ensures that the conversion works correctly. |
| // In particular, on D3D11 Feature Level 9_3 it ensures that both the zero LOD workaround texture AND the 'normal' texture are copied during conversion. |
| TEST_P(MipmapTest, GenerateMipmapFromInitDataThenRender) |
| { |
| // Pass in initial data so the texture is blue. |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, mLevelZeroBlueInitData); |
| |
| // Then generate the mips. |
| glGenerateMipmap(GL_TEXTURE_2D); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Enable mipmaps. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| |
| // Now draw the texture to various different sized areas. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Use mip level 1 |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255); |
| |
| // Use mip level 2 |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 255, 255); |
| |
| ASSERT_GL_NO_ERROR(); |
| |
| // Disable mips. Render a quad using the texture and ensure it's blue. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Clear level 0 of the texture. |
| glBindFramebuffer(GL_FRAMEBUFFER, mOffscreenFramebuffer); |
| glClearColor(1.0f, 0.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // Reenable mips, and try rendering different-sized quads. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| |
| // Level 0 is now red, so this should render red. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 255, 0, 0, 255); |
| |
| // Use mip level 1, blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255); |
| |
| // Use mip level 2, blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 255, 255); |
| } |
| |
| // This test ensures that mips are correctly generated from a rendered image. |
| // In particular, on D3D11 Feature Level 9_3, the clear call will be performed on the zero-level texture, rather than the mipped one. |
| // The test ensures that the zero-level texture is correctly copied into the mipped texture before the mipmaps are generated. |
| TEST_P(MipmapTest, GenerateMipmapFromRenderedImage) |
| { |
| // Bind the offscreen framebuffer/texture. |
| glBindFramebuffer(GL_FRAMEBUFFER, mOffscreenFramebuffer); |
| |
| // Clear the texture to blue. |
| glClearColor(0.0f, 0.0f, 1.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // Then generate the mips |
| glGenerateMipmap(GL_TEXTURE_2D); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Enable mips. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| |
| // Now draw the texture to various different sized areas. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Use mip level 1 |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 2, getWindowHeight() / 2); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255); |
| |
| // Use mip level 2 |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 255, 255); |
| } |
| |
| // Test to ensure that rendering to a mipmapped texture works, regardless of whether mipmaps are enabled or not. |
| // TODO: This test hits a texture rebind bug in the D3D11 renderer. Fix this. |
| TEST_P(MipmapTest, RenderOntoLevelZeroAfterGenerateMipmap) |
| { |
| // TODO(geofflang): Figure out why this is broken on AMD OpenGL |
| if (isAMD() && getPlatformRenderer() == EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE) |
| { |
| std::cout << "Test skipped on AMD OpenGL." << std::endl; |
| return; |
| } |
| |
| // Bind the offscreen texture/framebuffer. |
| glBindFramebuffer(GL_FRAMEBUFFER, mOffscreenFramebuffer); |
| |
| // Clear the texture to blue. |
| glClearColor(0.0f, 0.0f, 1.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // From now on, default clear color is black. |
| glClearColor(0.0f, 0.0f, 0.0f, 1.0f); |
| |
| // Now, draw the texture to a quad that's the same size as the texture. This draws to the default framebuffer. |
| // The quad should be blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Now go back to the texture, and generate mips on it. |
| glGenerateMipmap(GL_TEXTURE_2D); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Now try rendering the textured quad again. Note: we've not told GL to use the generated mips. |
| // The quad should be blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Now tell GL to use the generated mips. |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| EXPECT_EQ(glGetError(), GL_NONE); |
| |
| // Now render the textured quad again. It should be still be blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 0, 255, 255); |
| |
| // Now render the textured quad to an area smaller than the texture (i.e. to force minification). This should be blue. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 255, 255); |
| |
| // Now clear the texture to green. This just clears the top level. The lower mips should remain blue. |
| glBindFramebuffer(GL_FRAMEBUFFER, mOffscreenFramebuffer); |
| glClearColor(0.0f, 1.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // From now on, default clear color is black. |
| glClearColor(0.0f, 0.0f, 0.0f, 1.0f); |
| |
| // Render a textured quad equal in size to the texture. This should be green, since we just cleared level 0. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 255, 0, 255); |
| |
| // Render a small textured quad. This forces minification, so should render blue (the color of levels 1+). |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 0, 255, 255); |
| |
| // Disable mipmaps again |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Render a textured quad equal in size to the texture. This should be green, the color of level 0 in the texture. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth(), getWindowHeight()); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 0, 255, 0, 255); |
| |
| // Render a small textured quad. This would force minification if mips were enabled, but they're not. Therefore, this should be green. |
| ClearAndDrawTexturedQuad(mOffscreenTexture2D, getWindowWidth() / 4, getWindowHeight() / 4); |
| EXPECT_PIXEL_EQ(getWindowWidth() / 8, getWindowHeight() / 8, 0, 255, 0, 255); |
| } |
| |
| // This test ensures that the level-zero workaround for TextureCubes (on D3D11 Feature Level 9_3) |
| // works as expected. It tests enabling/disabling mipmaps, generating mipmaps, and rendering to level zero. |
| TEST_P(MipmapTest, TextureCubeGeneralLevelZero) |
| { |
| GLfloat vertexLocations[] = |
| { |
| -1.0f, 1.0f, 0.0f, |
| -1.0f, -1.0f, 0.0f, |
| 1.0f, 1.0f, 0.0f, |
| 1.0f, -1.0f, 0.0f, |
| }; |
| |
| // Set up the viewport, program, attributes, sampler and texture for the cube |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glViewport(0, 0, getWindowWidth(), getWindowHeight()); |
| glUseProgram(mCubeProgram); |
| glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, vertexLocations); |
| glEnableVertexAttribArray(0); |
| glUniform1i(0, 0); |
| glActiveTexture(GL_TEXTURE0); |
| glBindTexture(GL_TEXTURE_CUBE_MAP, mOffscreenTextureCube); |
| |
| // Draw. Since the negative-Y face's is blue, this should be blue. |
| glClear(GL_COLOR_BUFFER_BIT); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 0, 0, 255, 255); |
| |
| // Generate mipmaps, and render. This should be blue. |
| glClear(GL_COLOR_BUFFER_BIT); |
| glGenerateMipmap(GL_TEXTURE_CUBE_MAP); |
| glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 0, 0, 255, 255); |
| |
| // Draw using a smaller viewport (to force a lower LOD of the texture). This should still be blue. |
| glClear(GL_COLOR_BUFFER_BIT); |
| glViewport(0, 0, getWindowWidth() / 4, getWindowHeight() / 4); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 0, 0, 255, 255); |
| |
| // Now clear the negative-Y face of the cube to red. |
| glBindFramebuffer(GL_FRAMEBUFFER, mOffscreenFramebuffer); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, mOffscreenTextureCube, 0); |
| ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE); |
| glClearColor(1.0f, 0.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // Switch back to the default framebuffer |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glBindTexture(GL_TEXTURE_CUBE_MAP, mOffscreenTextureCube); |
| |
| // Draw using a full-size viewport. This should be red. |
| glClearColor(0.0f, 0.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| glViewport(0, 0, getWindowWidth(), getWindowHeight()); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255); |
| |
| // Draw using a quarter-size viewport, to force a lower LOD. This should be *BLUE*, since we only cleared level zero |
| // of the negative-Y face to red, and left its mipmaps blue. |
| glClear(GL_COLOR_BUFFER_BIT); |
| glViewport(0, 0, getWindowWidth() / 4, getWindowHeight() / 4); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 0, 0, 255, 255); |
| |
| // Disable mipmaps again, and draw a to a quarter-size viewport. |
| // Since this should use level zero of the texture, this should be *RED*. |
| glClear(GL_COLOR_BUFFER_BIT); |
| glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glViewport(0, 0, getWindowWidth() / 4, getWindowHeight() / 4); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| } |
| |
| // This test ensures that rendering to level-zero of a TextureCube works as expected. |
| TEST_P(MipmapTest, TextureCubeRenderToLevelZero) |
| { |
| GLfloat vertexLocations[] = |
| { |
| -1.0f, 1.0f, 0.0f, |
| -1.0f, -1.0f, 0.0f, |
| 1.0f, 1.0f, 0.0f, |
| 1.0f, -1.0f, 0.0f, |
| }; |
| |
| // Set up the viewport, program, attributes, sampler and texture for the cube |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glViewport(0, 0, getWindowWidth(), getWindowHeight()); |
| glUseProgram(mCubeProgram); |
| glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, vertexLocations); |
| glEnableVertexAttribArray(0); |
| glUniform1i(0, 0); |
| glActiveTexture(GL_TEXTURE0); |
| glBindTexture(GL_TEXTURE_CUBE_MAP, mOffscreenTextureCube); |
| |
| // Draw. Since the negative-Y face's is blue, this should be blue. |
| glClear(GL_COLOR_BUFFER_BIT); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 0, 0, 255, 255); |
| |
| // Now clear the negative-Y face of the cube to red. |
| glBindFramebuffer(GL_FRAMEBUFFER, mOffscreenFramebuffer); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, mOffscreenTextureCube, 0); |
| ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE); |
| glClearColor(1.0f, 0.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // Switch back to the default framebuffer |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glBindTexture(GL_TEXTURE_CUBE_MAP, mOffscreenTextureCube); |
| |
| // Draw using a full-size viewport. This should be red. |
| glClearColor(0.0f, 0.0f, 0.0f, 1.0f); |
| glClear(GL_COLOR_BUFFER_BIT); |
| glViewport(0, 0, getWindowWidth(), getWindowHeight()); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255); |
| |
| // Draw a to a quarter-size viewport. This should also be red. |
| glClear(GL_COLOR_BUFFER_BIT); |
| glViewport(0, 0, getWindowWidth() / 4, getWindowHeight() / 4); |
| glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
| EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255); |
| } |
| |
| // Creates a mipmapped 2D array texture with three layers, and calls ANGLE's GenerateMipmap. |
| // Then tests if the mipmaps are rendered correctly for all three layers. |
| TEST_P(MipmapTestES3, MipmapsForTextureArray) |
| { |
| int px = getWindowWidth() / 2; |
| int py = getWindowHeight() / 2; |
| |
| glActiveTexture(GL_TEXTURE0); |
| glBindTexture(GL_TEXTURE_2D_ARRAY, mTextureArray); |
| |
| glTexStorage3D(GL_TEXTURE_2D_ARRAY, 5, GL_RGBA8, 16, 16, 3); |
| |
| // Fill the first layer with red |
| std::vector<GLubyte> pixels(4 * 16 * 16); |
| for (size_t pixelId = 0; pixelId < 16 * 16; ++pixelId) |
| { |
| pixels[pixelId * 4 + 0] = 255; |
| pixels[pixelId * 4 + 1] = 0; |
| pixels[pixelId * 4 + 2] = 0; |
| pixels[pixelId * 4 + 3] = 255; |
| } |
| |
| glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 0, 16, 16, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data()); |
| |
| // Fill the second layer with green |
| for (size_t pixelId = 0; pixelId < 16 * 16; ++pixelId) |
| { |
| pixels[pixelId * 4 + 0] = 0; |
| pixels[pixelId * 4 + 1] = 255; |
| pixels[pixelId * 4 + 2] = 0; |
| pixels[pixelId * 4 + 3] = 255; |
| } |
| |
| glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 1, 16, 16, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data()); |
| |
| // Fill the third layer with blue |
| for (size_t pixelId = 0; pixelId < 16 * 16; ++pixelId) |
| { |
| pixels[pixelId * 4 + 0] = 0; |
| pixels[pixelId * 4 + 1] = 0; |
| pixels[pixelId * 4 + 2] = 255; |
| pixels[pixelId * 4 + 3] = 255; |
| } |
| |
| glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 2, 16, 16, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data()); |
| |
| glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| |
| EXPECT_GL_NO_ERROR(); |
| |
| glGenerateMipmap(GL_TEXTURE_2D_ARRAY); |
| |
| EXPECT_GL_NO_ERROR(); |
| |
| glUseProgram(mArrayProgram); |
| glUniform1i(mTextureArrayUniformLocation, 0); |
| |
| EXPECT_GL_NO_ERROR(); |
| |
| // Draw the first slice |
| glUseProgram(mArrayProgram); |
| glUniform1i(mTextureArraySliceUniformLocation, 0); |
| drawQuad(mArrayProgram, "position", 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| EXPECT_PIXEL_EQ(px, py, 255, 0, 0, 255); |
| |
| // Draw the second slice |
| glUseProgram(mArrayProgram); |
| glUniform1i(mTextureArraySliceUniformLocation, 1); |
| drawQuad(mArrayProgram, "position", 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| EXPECT_PIXEL_EQ(px, py, 0, 255, 0, 255); |
| |
| // Draw the third slice |
| glUseProgram(mArrayProgram); |
| glUniform1i(mTextureArraySliceUniformLocation, 2); |
| drawQuad(mArrayProgram, "position", 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| EXPECT_PIXEL_EQ(px, py, 0, 0, 255, 255); |
| } |
| |
| // Creates a mipmapped 3D texture with two layers, and calls ANGLE's GenerateMipmap. |
| // Then tests if the mipmaps are rendered correctly for all two layers. |
| TEST_P(MipmapTestES3, MipmapsForTexture3D) |
| { |
| int px = getWindowWidth() / 2; |
| int py = getWindowHeight() / 2; |
| |
| glActiveTexture(GL_TEXTURE0); |
| glBindTexture(GL_TEXTURE_3D, mTexture3D); |
| |
| glTexStorage3D(GL_TEXTURE_3D, 5, GL_RGBA8, 16, 16, 2); |
| |
| // Fill the first layer with red |
| std::vector<GLubyte> pixels(4 * 16 * 16); |
| for (size_t pixelId = 0; pixelId < 16 * 16; ++pixelId) |
| { |
| pixels[pixelId * 4 + 0] = 255; |
| pixels[pixelId * 4 + 1] = 0; |
| pixels[pixelId * 4 + 2] = 0; |
| pixels[pixelId * 4 + 3] = 255; |
| } |
| |
| glTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, 0, 16, 16, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data()); |
| |
| // Fill the second layer with green |
| for (size_t pixelId = 0; pixelId < 16 * 16; ++pixelId) |
| { |
| pixels[pixelId * 4 + 0] = 0; |
| pixels[pixelId * 4 + 1] = 255; |
| pixels[pixelId * 4 + 2] = 0; |
| pixels[pixelId * 4 + 3] = 255; |
| } |
| |
| glTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, 1, 16, 16, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data()); |
| |
| glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST); |
| glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| |
| EXPECT_GL_NO_ERROR(); |
| |
| glGenerateMipmap(GL_TEXTURE_3D); |
| |
| EXPECT_GL_NO_ERROR(); |
| |
| glUseProgram(m3DProgram); |
| glUniform1i(mTexture3DUniformLocation, 0); |
| |
| EXPECT_GL_NO_ERROR(); |
| |
| // Mipmap level 0 |
| // Draw the first slice |
| glUseProgram(m3DProgram); |
| glUniform1f(mTexture3DLODUniformLocation, 0.); |
| glUniform1f(mTexture3DSliceUniformLocation, 0.25f); |
| drawQuad(m3DProgram, "position", 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| EXPECT_PIXEL_EQ(px, py, 255, 0, 0, 255); |
| |
| // Draw the second slice |
| glUseProgram(m3DProgram); |
| glUniform1f(mTexture3DSliceUniformLocation, 0.75f); |
| drawQuad(m3DProgram, "position", 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| EXPECT_PIXEL_EQ(px, py, 0, 255, 0, 255); |
| |
| // Mipmap level 1 |
| // The second mipmap should only have one slice. |
| |
| glUseProgram(m3DProgram); |
| glUniform1f(mTexture3DLODUniformLocation, 1.); |
| drawQuad(m3DProgram, "position", 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| EXPECT_PIXEL_EQ(px, py, 127, 127, 0, 255); |
| |
| glUseProgram(m3DProgram); |
| glUniform1f(mTexture3DSliceUniformLocation, 0.75f); |
| drawQuad(m3DProgram, "position", 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| EXPECT_PIXEL_EQ(px, py, 127, 127, 0, 255); |
| } |
| |
| // Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against. |
| // Note: we run these tests against 9_3 on WARP due to hardware driver issues on Win7 |
| ANGLE_INSTANTIATE_TEST(MipmapTest, ES2_D3D9(), ES2_D3D11(), ES2_D3D11_FL9_3_WARP(), ES2_OPENGL(), ES3_OPENGL()); |
| ANGLE_INSTANTIATE_TEST(MipmapTestES3, ES3_D3D11()); |
