| // |
| // 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 "test_utils/ANGLETest.h" |
| #include "test_utils/gl_raii.h" |
| |
| namespace angle |
| { |
| |
| class CopyTexImageTest : public ANGLETest |
| { |
| protected: |
| CopyTexImageTest() |
| { |
| setWindowWidth(32); |
| setWindowHeight(32); |
| setConfigRedBits(8); |
| setConfigGreenBits(8); |
| setConfigBlueBits(8); |
| setConfigAlphaBits(8); |
| } |
| |
| void testSetUp() override |
| { |
| mTextureProgram = |
| CompileProgram(essl1_shaders::vs::Texture2D(), essl1_shaders::fs::Texture2D()); |
| if (mTextureProgram == 0) |
| { |
| FAIL() << "shader compilation failed."; |
| } |
| |
| mTextureUniformLocation = |
| glGetUniformLocation(mTextureProgram, essl1_shaders::Texture2DUniform()); |
| |
| ASSERT_GL_NO_ERROR(); |
| } |
| |
| void testTearDown() override { glDeleteProgram(mTextureProgram); } |
| |
| void initializeResources(GLenum format, GLenum type) |
| { |
| for (size_t i = 0; i < kFboCount; ++i) |
| { |
| glBindTexture(GL_TEXTURE_2D, mFboTextures[i]); |
| glTexImage2D(GL_TEXTURE_2D, 0, format, kFboSizes[i], kFboSizes[i], 0, format, type, |
| nullptr); |
| |
| // Disable mipmapping |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[i]); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, |
| mFboTextures[i], 0); |
| |
| glClearColor(kFboColors[i][0], kFboColors[i][1], kFboColors[i][2], kFboColors[i][3]); |
| glClear(GL_COLOR_BUFFER_BIT); |
| } |
| |
| ASSERT_GL_NO_ERROR(); |
| } |
| |
| void verifyResults(GLuint texture, |
| const GLubyte data[4], |
| GLint fboSize, |
| GLint xs, |
| GLint ys, |
| GLint xe, |
| GLint ye) |
| { |
| glViewport(0, 0, fboSize, fboSize); |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| |
| // Draw a quad with the target texture |
| glUseProgram(mTextureProgram); |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glUniform1i(mTextureUniformLocation, 0); |
| |
| drawQuad(mTextureProgram, essl1_shaders::PositionAttrib(), 0.5f); |
| |
| // Expect that the rendered quad has the same color as the source texture |
| EXPECT_PIXEL_NEAR(xs, ys, data[0], data[1], data[2], data[3], 1.0); |
| EXPECT_PIXEL_NEAR(xs, ye - 1, data[0], data[1], data[2], data[3], 1.0); |
| EXPECT_PIXEL_NEAR(xe - 1, ys, data[0], data[1], data[2], data[3], 1.0); |
| EXPECT_PIXEL_NEAR(xe - 1, ye - 1, data[0], data[1], data[2], data[3], 1.0); |
| EXPECT_PIXEL_NEAR((xs + xe) / 2, (ys + ye) / 2, data[0], data[1], data[2], data[3], 1.0); |
| } |
| |
| void verifyCheckeredResults(GLuint texture, |
| const GLubyte data0[4], |
| const GLubyte data1[4], |
| const GLubyte data2[4], |
| const GLubyte data3[4], |
| GLint fboWidth, |
| GLint fboHeight) |
| { |
| glViewport(0, 0, fboWidth, fboHeight); |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| |
| // Draw a quad with the target texture |
| glUseProgram(mTextureProgram); |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glUniform1i(mTextureUniformLocation, 0); |
| |
| drawQuad(mTextureProgram, essl1_shaders::PositionAttrib(), 0.5f); |
| |
| // Expect that the rendered quad has the same color as the source texture |
| EXPECT_PIXEL_EQ(fboWidth / 4, fboHeight / 4, data0[0], data0[1], data0[2], data0[3]); |
| EXPECT_PIXEL_EQ(fboWidth / 4, 3 * fboHeight / 4, data1[0], data1[1], data1[2], data1[3]); |
| EXPECT_PIXEL_EQ(3 * fboWidth / 4, fboHeight / 4, data2[0], data2[1], data2[2], data2[3]); |
| EXPECT_PIXEL_EQ(3 * fboWidth / 4, 3 * fboHeight / 4, data3[0], data3[1], data3[2], |
| data3[3]); |
| } |
| |
| void runCopyTexImageTest(GLenum format, GLubyte expected[3][4]) |
| { |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D, tex); |
| |
| // Disable mipmapping |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| |
| // Perform the copy multiple times. |
| // |
| // - The first time, a new texture is created |
| // - The second time, as the fbo size is the same as previous, the texture storage is not |
| // recreated. |
| // - The third time, the fbo size is different, so a new texture is created. |
| for (size_t i = 0; i < kFboCount; ++i) |
| { |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[i]); |
| |
| glCopyTexImage2D(GL_TEXTURE_2D, 0, format, 0, 0, kFboSizes[i], kFboSizes[i], 0); |
| ASSERT_GL_NO_ERROR(); |
| |
| verifyResults(tex, expected[i], kFboSizes[i], 0, 0, kFboSizes[i], kFboSizes[i]); |
| } |
| } |
| |
| // x, y, width, height specify the portion of fbo to be copied into tex. |
| // flip_y specifies if the glCopyTextImage must be done from y-flipped fbo. |
| void runCopyTexImageTestCheckered(GLenum format, |
| const uint32_t x[3], |
| const uint32_t y[3], |
| const uint32_t width[3], |
| const uint32_t height[3], |
| const GLubyte expectedData0[4], |
| const GLubyte expectedData1[4], |
| const GLubyte expectedData2[4], |
| const GLubyte expectedData3[4], |
| bool mesaFlipY) |
| { |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D, tex); |
| |
| // Disable mipmapping |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| |
| // Perform the copy multiple times. |
| for (size_t i = 0; i < kFboCount; ++i) |
| { |
| glViewport(0, 0, kFboSizes[i], kFboSizes[i]); |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[i]); |
| |
| ANGLE_GL_PROGRAM(checkerProgram, essl1_shaders::vs::Passthrough(), |
| essl1_shaders::fs::Checkered()); |
| drawQuad(checkerProgram.get(), essl1_shaders::PositionAttrib(), 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| |
| if (mesaFlipY) |
| glFramebufferParameteriMESA(GL_FRAMEBUFFER, GL_FRAMEBUFFER_FLIP_Y_MESA, 1); |
| glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x[i], y[i], width[i], height[i], 0); |
| ASSERT_GL_NO_ERROR(); |
| |
| verifyCheckeredResults(tex, expectedData0, expectedData1, expectedData2, expectedData3, |
| kFboSizes[i], kFboSizes[i]); |
| } |
| } |
| |
| void runCopyTexSubImageTest(GLenum format, GLubyte expected[3][4]) |
| { |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D, tex); |
| |
| // Disable mipmapping |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| |
| // Create the texture with copy of the first fbo. |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[0]); |
| glCopyTexImage2D(GL_TEXTURE_2D, 0, format, 0, 0, kFboSizes[0], kFboSizes[0], 0); |
| ASSERT_GL_NO_ERROR(); |
| |
| verifyResults(tex, expected[0], kFboSizes[0], 0, 0, kFboSizes[0], kFboSizes[0]); |
| |
| // Make sure out-of-bound writes to the texture return invalid value. |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[1]); |
| |
| // xoffset < 0 and yoffset < 0 |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, -1, -1, 0, 0, kFboSizes[0], kFboSizes[0]); |
| ASSERT_GL_ERROR(GL_INVALID_VALUE); |
| |
| // xoffset + width > w and yoffset + height > h |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 1, 1, 0, 0, kFboSizes[0], kFboSizes[0]); |
| ASSERT_GL_ERROR(GL_INVALID_VALUE); |
| |
| // xoffset + width > w and yoffset + height > h, out of bounds |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, -1, -1, 1 + kFboSizes[0], 1 + kFboSizes[0]); |
| ASSERT_GL_ERROR(GL_INVALID_VALUE); |
| |
| // Copy the second fbo over a portion of the image. |
| GLint offset = kFboSizes[0] / 2; |
| GLint extent = kFboSizes[0] - offset; |
| |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, offset, offset, kFboSizes[1] / 2, kFboSizes[1] / 2, |
| extent, extent); |
| ASSERT_GL_NO_ERROR(); |
| |
| verifyResults(tex, expected[1], kFboSizes[0], offset, offset, kFboSizes[0], kFboSizes[0]); |
| |
| // The rest of the image should be untouched |
| verifyResults(tex, expected[0], kFboSizes[0], 0, 0, offset, offset); |
| verifyResults(tex, expected[0], kFboSizes[0], offset, 0, kFboSizes[0], offset); |
| verifyResults(tex, expected[0], kFboSizes[0], 0, offset, offset, kFboSizes[0]); |
| |
| // Copy the third fbo over another portion of the image. |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[2]); |
| |
| offset = kFboSizes[0] / 4; |
| extent = kFboSizes[0] - offset; |
| |
| // While width and height are set as 3/4 of the size, the fbo offset is given such that |
| // after clipping, width and height are effectively 1/2 of the size. |
| GLint srcOffset = kFboSizes[2] - kFboSizes[0] / 2; |
| GLint effectiveExtent = kFboSizes[0] / 2; |
| |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, offset, offset, srcOffset, srcOffset, extent, extent); |
| ASSERT_GL_NO_ERROR(); |
| |
| verifyResults(tex, expected[2], kFboSizes[0], offset, offset, effectiveExtent, |
| effectiveExtent); |
| |
| // The rest of the image should be untouched |
| verifyResults(tex, expected[1], kFboSizes[0], offset + effectiveExtent, kFboSizes[0] / 2, |
| kFboSizes[0], kFboSizes[0]); |
| verifyResults(tex, expected[1], kFboSizes[0], kFboSizes[0] / 2, offset + effectiveExtent, |
| kFboSizes[0], kFboSizes[0]); |
| |
| verifyResults(tex, expected[0], kFboSizes[0], 0, 0, kFboSizes[0], offset); |
| verifyResults(tex, expected[0], kFboSizes[0], 0, 0, offset, kFboSizes[0]); |
| verifyResults(tex, expected[0], kFboSizes[0], offset + effectiveExtent, 0, kFboSizes[0], |
| kFboSizes[0] / 2); |
| verifyResults(tex, expected[0], kFboSizes[0], 0, offset + effectiveExtent, kFboSizes[0] / 2, |
| kFboSizes[0]); |
| } |
| |
| GLuint mTextureProgram; |
| GLint mTextureUniformLocation; |
| |
| static constexpr uint32_t kFboCount = 3; |
| GLFramebuffer mFbos[kFboCount]; |
| GLTexture mFboTextures[kFboCount]; |
| |
| static constexpr uint32_t kFboSizes[kFboCount] = {16, 16, 32}; |
| static constexpr GLfloat kFboColors[kFboCount][4] = {{0.25f, 1.0f, 0.75f, 0.5f}, |
| {1.0f, 0.75f, 0.5f, 0.25f}, |
| {0.5f, 0.25f, 1.0f, 0.75f}}; |
| }; |
| |
| // Until C++17, need to redundantly declare the constexpr members outside the class (only the |
| // arrays, because the others are already const-propagated and not needed by the linker). |
| constexpr uint32_t CopyTexImageTest::kFboSizes[]; |
| constexpr GLfloat CopyTexImageTest::kFboColors[][4]; |
| |
| TEST_P(CopyTexImageTest, RGBAToRGB) |
| { |
| GLubyte expected[3][4] = { |
| {64, 255, 191, 255}, |
| {255, 191, 127, 255}, |
| {127, 64, 255, 255}, |
| }; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexImageTest(GL_RGB, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, RGBAToL) |
| { |
| GLubyte expected[3][4] = { |
| {64, 64, 64, 255}, |
| {255, 255, 255, 255}, |
| {127, 127, 127, 255}, |
| }; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexImageTest(GL_LUMINANCE, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, RGBToL) |
| { |
| GLubyte expected[3][4] = { |
| {64, 64, 64, 255}, |
| {255, 255, 255, 255}, |
| {127, 127, 127, 255}, |
| }; |
| |
| initializeResources(GL_RGB, GL_UNSIGNED_BYTE); |
| runCopyTexImageTest(GL_LUMINANCE, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, RGBAToLA) |
| { |
| GLubyte expected[3][4] = { |
| {64, 64, 64, 127}, |
| {255, 255, 255, 64}, |
| {127, 127, 127, 191}, |
| }; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexImageTest(GL_LUMINANCE_ALPHA, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, RGBAToA) |
| { |
| GLubyte expected[3][4] = { |
| {0, 0, 0, 127}, |
| {0, 0, 0, 64}, |
| {0, 0, 0, 191}, |
| }; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexImageTest(GL_ALPHA, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, SubImageRGBAToRGB) |
| { |
| GLubyte expected[3][4] = { |
| {64, 255, 191, 255}, |
| {255, 191, 127, 255}, |
| {127, 64, 255, 255}, |
| }; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexSubImageTest(GL_RGB, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, SubImageRGBAToL) |
| { |
| GLubyte expected[3][4] = { |
| {64, 64, 64, 255}, |
| {255, 255, 255, 255}, |
| {127, 127, 127, 255}, |
| }; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexSubImageTest(GL_LUMINANCE, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, SubImageRGBAToLA) |
| { |
| GLubyte expected[3][4] = { |
| {64, 64, 64, 127}, |
| {255, 255, 255, 64}, |
| {127, 127, 127, 191}, |
| }; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexSubImageTest(GL_LUMINANCE_ALPHA, expected); |
| } |
| |
| TEST_P(CopyTexImageTest, SubImageRGBToL) |
| { |
| GLubyte expected[3][4] = { |
| {64, 64, 64, 255}, |
| {255, 255, 255, 255}, |
| {127, 127, 127, 255}, |
| }; |
| |
| initializeResources(GL_RGB, GL_UNSIGNED_BYTE); |
| runCopyTexSubImageTest(GL_LUMINANCE, expected); |
| } |
| |
| // Read default framebuffer with glCopyTexImage2D(). |
| TEST_P(CopyTexImageTest, DefaultFramebuffer) |
| { |
| // Seems to be a bug in Mesa with the GLX back end: cannot read framebuffer until we draw to it. |
| // glCopyTexImage2D() below will fail without this clear. |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| const GLint w = getWindowWidth(), h = getWindowHeight(); |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D, tex); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); |
| glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, w, h, 0); |
| EXPECT_GL_NO_ERROR(); |
| } |
| |
| // Read default framebuffer with glCopyTexSubImage2D(). |
| TEST_P(CopyTexImageTest, SubDefaultFramebuffer) |
| { |
| // Seems to be a bug in Mesa with the GLX back end: cannot read framebuffer until we draw to it. |
| // glCopyTexSubImage2D() below will fail without this clear. |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| const GLint w = getWindowWidth(), h = getWindowHeight(); |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D, tex); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, w, h); |
| EXPECT_GL_NO_ERROR(); |
| } |
| |
| // Calling CopyTexSubImage from cubeMap texture. |
| TEST_P(CopyTexImageTest, CopyTexSubImageFromCubeMap) |
| { |
| constexpr GLsizei kCubeMapFaceCount = 6; |
| |
| // The framebuffer will be a face of a cube map with a different colors for each face. Each |
| // glCopyTexSubImage2D will take one face of this image to copy over a pixel in a 1x6 |
| // framebuffer. |
| GLColor fboPixels[kCubeMapFaceCount] = {GLColor::red, GLColor::yellow, GLColor::green, |
| GLColor::cyan, GLColor::blue, GLColor::magenta}; |
| GLColor whitePixels[kCubeMapFaceCount] = {GLColor::white, GLColor::white, GLColor::white, |
| GLColor::white, GLColor::white, GLColor::white}; |
| |
| GLTexture fboTex; |
| glBindTexture(GL_TEXTURE_CUBE_MAP, fboTex); |
| for (GLenum face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; face <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; |
| face++) |
| { |
| GLsizei faceIndex = face - GL_TEXTURE_CUBE_MAP_POSITIVE_X; |
| |
| glTexImage2D(face, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, &fboPixels[faceIndex]); |
| } |
| |
| GLTexture dstTex; |
| glBindTexture(GL_TEXTURE_2D, dstTex); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kCubeMapFaceCount, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| whitePixels); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| |
| for (GLenum face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; face <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; |
| face++) |
| { |
| GLsizei faceIndex = face - GL_TEXTURE_CUBE_MAP_POSITIVE_X; |
| |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, face, fboTex, 0); |
| |
| ASSERT_GL_NO_ERROR(); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| |
| // Copy the fbo (a cube map face) into a pixel of the destination texture. |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, faceIndex, 0, 0, 0, 1, 1); |
| } |
| |
| // Make sure all the copies are done correctly. |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, dstTex, 0); |
| |
| ASSERT_GL_NO_ERROR(); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| |
| for (GLsizei faceIndex = 0; faceIndex < kCubeMapFaceCount; ++faceIndex) |
| { |
| EXPECT_PIXEL_COLOR_EQ(faceIndex, 0, fboPixels[faceIndex]); |
| } |
| } |
| |
| // Calling CopyTexSubImage to a non-cube-complete texture. |
| TEST_P(CopyTexImageTest, CopyTexSubImageToNonCubeCompleteDestination) |
| { |
| constexpr GLsizei kCubeMapFaceCount = 6; |
| |
| // The framebuffer will be a 1x6 image with 6 different colors. Each glCopyTexSubImage2D will |
| // take one pixel of this image to copy over each face of a cube map. |
| GLColor fboPixels[kCubeMapFaceCount] = {GLColor::red, GLColor::yellow, GLColor::green, |
| GLColor::cyan, GLColor::blue, GLColor::magenta}; |
| GLColor whitePixel = GLColor::white; |
| |
| GLTexture fboTex; |
| glBindTexture(GL_TEXTURE_2D, fboTex); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kCubeMapFaceCount, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| fboPixels); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fboTex, 0); |
| |
| ASSERT_GL_NO_ERROR(); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| |
| GLTexture cubeMap; |
| glBindTexture(GL_TEXTURE_CUBE_MAP, cubeMap); |
| |
| for (GLenum face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; face <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; |
| face++) |
| { |
| GLsizei faceIndex = face - GL_TEXTURE_CUBE_MAP_POSITIVE_X; |
| |
| // Initialize the face with a color not found in the fbo. |
| glTexImage2D(face, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, &whitePixel); |
| |
| // Copy one pixel from the fbo into this face. The first 5 copies are done on a |
| // non-cube-complete texture. |
| glCopyTexSubImage2D(face, 0, 0, 0, faceIndex, 0, 1, 1); |
| } |
| |
| // Make sure all the copies are done correctly. |
| for (GLenum face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; face <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; |
| face++) |
| { |
| GLsizei faceIndex = face - GL_TEXTURE_CUBE_MAP_POSITIVE_X; |
| |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, face, cubeMap, 0); |
| |
| ASSERT_GL_NO_ERROR(); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| |
| EXPECT_PIXEL_COLOR_EQ(0, 0, fboPixels[faceIndex]); |
| } |
| } |
| |
| // Deleting textures after copying to them. http://anglebug.com/4267 |
| TEST_P(CopyTexImageTest, DeleteAfterCopyingToTextures) |
| { |
| // TODO(anglebug.com/5360): Failing on ARM-based Apple DTKs. |
| ANGLE_SKIP_TEST_IF(IsOSX() && IsARM64() && IsDesktopOpenGL()); |
| |
| GLTexture texture; |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| |
| GLTexture texture2; |
| glBindTexture(GL_TEXTURE_2D, texture2); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| |
| GLFramebuffer framebuffer; |
| glBindFramebuffer(GL_FRAMEBUFFER, framebuffer); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0); |
| ASSERT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER); |
| |
| // Perform CopyTexImage2D |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glCopyTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, 0, 0, 2, 2, 0); |
| ASSERT_GL_NO_ERROR(); |
| // Not necessary to do any CopyTexImage2D operations to texture2. |
| |
| // Perform CopyTexSubImage2D |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, 0, 0, 1, 1); |
| ASSERT_GL_NO_ERROR(); |
| glBindTexture(GL_TEXTURE_2D, texture2); |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 1, 1); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Clean up - provokes crash on buggy drivers. |
| texture.reset(); |
| // Crashes on Intel GPUs on macOS. |
| texture2.reset(); |
| } |
| // Test if glCopyTexImage2D() implementation performs conversions well from GL_TEXTURE_3D to |
| // GL_TEXTURE_2D. |
| // This is similar to CopyTexImageTestES3.CopyTexSubImageFromTexture3D but for GL_OES_texture_3D |
| // extension. |
| TEST_P(CopyTexImageTest, CopyTexSubImageFrom3DTexureOES) |
| { |
| ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_OES_texture_3D")); |
| // TODO(anglebug.com/3801) |
| // Seems to fail on D3D11 Windows. |
| ANGLE_SKIP_TEST_IF(IsD3D11() && IsWindows()); |
| |
| // http://anglebug.com/4927 |
| ANGLE_SKIP_TEST_IF((IsPixel2() || IsNexus5X()) && IsOpenGLES()); |
| |
| constexpr GLsizei kDepth = 6; |
| |
| // The framebuffer will be a slice of a 3d texture with a different colors for each slice. Each |
| // glCopyTexSubImage2D will take one face of this image to copy over a pixel in a 1x6 |
| // framebuffer. |
| GLColor fboPixels[kDepth] = {GLColor::red, GLColor::yellow, GLColor::green, |
| GLColor::cyan, GLColor::blue, GLColor::magenta}; |
| GLColor whitePixels[kDepth] = {GLColor::white, GLColor::white, GLColor::white, |
| GLColor::white, GLColor::white, GLColor::white}; |
| |
| GLTexture fboTex; |
| glBindTexture(GL_TEXTURE_3D, fboTex); |
| glTexImage3DOES(GL_TEXTURE_3D, 0, GL_RGBA, 1, 1, kDepth, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| fboPixels); |
| |
| GLTexture dstTex; |
| glBindTexture(GL_TEXTURE_2D, dstTex); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kDepth, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, whitePixels); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| |
| for (GLsizei slice = 0; slice < kDepth; ++slice) |
| { |
| glFramebufferTexture3DOES(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_3D, fboTex, 0, |
| slice); |
| |
| ASSERT_GL_NO_ERROR(); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| |
| // Copy the fbo (a 3d slice) into a pixel of the destination texture. |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, slice, 0, 0, 0, 1, 1); |
| } |
| |
| // Make sure all the copies are done correctly. |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, dstTex, 0); |
| |
| ASSERT_GL_NO_ERROR(); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| |
| for (GLsizei slice = 0; slice < kDepth; ++slice) |
| { |
| EXPECT_PIXEL_COLOR_EQ(slice, 0, fboPixels[slice]); |
| } |
| } |
| |
| // Tests image copy from y-flipped fbo works. |
| TEST_P(CopyTexImageTest, CopyTexImageMesaYFlip) |
| { |
| ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_MESA_framebuffer_flip_y")); |
| |
| std::array<uint32_t, 3> copyOrigin{0}; |
| std::array<uint32_t, 3> copySize; |
| for (size_t i = 0; i < kFboCount; i++) |
| copySize[i] = kFboSizes[i]; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexImageTestCheckered(GL_RGBA, copyOrigin.data(), copyOrigin.data(), copySize.data(), |
| copySize.data(), GLColor::green.data(), GLColor::red.data(), |
| GLColor::yellow.data(), GLColor::blue.data(), |
| true /* mesaFlipY */); |
| } |
| |
| // Tests image partial copy from y-flipped fbo works. |
| TEST_P(CopyTexImageTest, CopyTexImageMesaYFlipPartial) |
| { |
| ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_MESA_framebuffer_flip_y")); |
| |
| std::array<uint32_t, kFboCount> copyX; |
| std::array<uint32_t, kFboCount> copyY{0}; |
| std::array<uint32_t, kFboCount> copyWidth; |
| std::array<uint32_t, kFboCount> copyHeight; |
| |
| for (size_t i = 0; i < kFboCount; i++) |
| { |
| copyX[i] = kFboSizes[i] / 2; |
| copyHeight[i] = kFboSizes[i]; |
| } |
| copyWidth = copyX; |
| |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| runCopyTexImageTestCheckered(GL_RGBA, copyX.data(), copyY.data(), copyWidth.data(), |
| copyHeight.data(), GLColor::yellow.data(), GLColor::blue.data(), |
| GLColor::yellow.data(), GLColor::blue.data(), |
| true /* mesaFlipY */); |
| } |
| |
| // Tests subimage copy from y-flipped fbo works. |
| TEST_P(CopyTexImageTest, CopyTexSubImageMesaYFlip) |
| { |
| ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_MESA_framebuffer_flip_y")); |
| |
| GLuint format = GL_RGBA; |
| initializeResources(format, GL_UNSIGNED_BYTE); |
| |
| glViewport(0, 0, kFboSizes[0], kFboSizes[0]); |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[0]); |
| |
| ANGLE_GL_PROGRAM(checkerProgram, essl1_shaders::vs::Passthrough(), |
| essl1_shaders::fs::Checkered()); |
| drawQuad(checkerProgram.get(), essl1_shaders::PositionAttrib(), 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D, tex); |
| |
| // Disable mipmapping |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| |
| // Create the texture with copy of the first fbo. |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[0]); |
| glFramebufferParameteriMESA(GL_FRAMEBUFFER, GL_FRAMEBUFFER_FLIP_Y_MESA, 1); |
| glCopyTexImage2D(GL_TEXTURE_2D, 0, format, 0, 0, kFboSizes[0], kFboSizes[0], 0); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Make sure out-of-bound writes to the texture return invalid value. |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[1]); |
| drawQuad(checkerProgram.get(), essl1_shaders::PositionAttrib(), 0.5f); |
| EXPECT_GL_NO_ERROR(); |
| |
| glFramebufferParameteriMESA(GL_FRAMEBUFFER, GL_FRAMEBUFFER_FLIP_Y_MESA, 1); |
| |
| // xoffset < 0 and yoffset < 0 |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, -1, -1, 0, 0, kFboSizes[0], kFboSizes[0]); |
| ASSERT_GL_ERROR(GL_INVALID_VALUE); |
| |
| // xoffset + width > w and yoffset + height > h |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 1, 1, 0, 0, kFboSizes[0], kFboSizes[0]); |
| ASSERT_GL_ERROR(GL_INVALID_VALUE); |
| |
| // xoffset + width > w and yoffset + height > h, out of bounds |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, -1, -1, 1 + kFboSizes[0], 1 + kFboSizes[0]); |
| ASSERT_GL_ERROR(GL_INVALID_VALUE); |
| |
| // Copy the second fbo over a portion of the image. |
| GLint offset = kFboSizes[0] / 2; |
| GLint extent = kFboSizes[0] - offset; |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, offset, offset, kFboSizes[1] / 2, kFboSizes[1] / 2, |
| extent, extent); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Only part of the image is changed. |
| verifyCheckeredResults(tex, GLColor::green.data(), GLColor::red.data(), GLColor::yellow.data(), |
| GLColor::blue.data(), kFboSizes[0], kFboSizes[0]); |
| } |
| |
| // specialization of CopyTexImageTest is added so that some tests can be explicitly run with an ES3 |
| // context |
| class CopyTexImageTestES3 : public CopyTexImageTest |
| { |
| protected: |
| void initialize3DTexture(GLTexture &texture, |
| const GLsizei imageWidth, |
| const GLsizei imageHeight, |
| const GLsizei imageDepth, |
| const GLColor *textureData); |
| void initialize2DTexture(GLTexture &texture, |
| const GLsizei imageWidth, |
| const GLsizei imageHeight, |
| const GLColor *textureData); |
| void initialize2DTextureUShort4444(GLTexture &texture, |
| const GLsizei imageWidth, |
| const GLsizei imageHeight, |
| const GLColor *textureData); |
| void fillTexture(std::vector<GLColor> &texture, const GLColor color); |
| void clearTexture(GLFramebuffer &fbo, GLTexture &texture, const GLColor color); |
| void copyTexSubImage3D(GLTexture &subTexture2D, |
| const GLint xOffset, |
| const GLint yOffset, |
| const GLsizei subImageWidth, |
| const GLsizei subImageHeight, |
| const GLsizei imageDepth); |
| void verifyCopyTexSubImage3D(GLTexture &texture3D, |
| const GLint xOffset, |
| const GLint yOffset, |
| const GLColor subImageColor); |
| |
| // Constants |
| const GLColor kSubImageColor = GLColor::yellow; |
| // 3D image dimensions |
| const GLsizei kImageWidth = getWindowWidth(); |
| const GLsizei kImageHeight = getWindowHeight(); |
| const GLsizei kImageDepth = 4; |
| // 2D sub-image dimensions |
| const GLsizei kSubImageWidth = getWindowWidth() / 4; |
| const GLsizei kSubImageHeight = getWindowHeight() / 4; |
| // Sub-Image Offsets |
| const GLint kXOffset = getWindowWidth() - kSubImageWidth; |
| const GLint kYOffset = getWindowHeight() - kSubImageHeight; |
| }; |
| |
| // The test verifies that glCopyTexSubImage2D generates a GL_INVALID_OPERATION error |
| // when the read buffer is GL_NONE. |
| // Reference: GLES 3.0.4, Section 3.8.5 Alternate Texture Image Specification Commands |
| TEST_P(CopyTexImageTestES3, ReadBufferIsNone) |
| { |
| initializeResources(GL_RGBA, GL_UNSIGNED_BYTE); |
| |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D, tex); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, mFbos[0]); |
| glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, kFboSizes[0], kFboSizes[0], 0); |
| |
| glReadBuffer(GL_NONE); |
| |
| EXPECT_GL_NO_ERROR(); |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 4, 4); |
| EXPECT_GL_ERROR(GL_INVALID_OPERATION); |
| } |
| |
| // Test CopyTexImage3D with some simple parameters with a 2D array texture. |
| TEST_P(CopyTexImageTestES3, 2DArraySubImage) |
| { |
| // Seems to fail on AMD OpenGL Windows. |
| ANGLE_SKIP_TEST_IF(IsAMD() && IsOpenGL() && IsWindows()); |
| |
| GLTexture tex; |
| glBindTexture(GL_TEXTURE_2D_ARRAY, tex); |
| |
| constexpr GLsizei kTexSize = 4; |
| constexpr GLsizei kLayerOffset = 1; |
| constexpr GLsizei kLayers = 2; |
| |
| // Clear screen to green. |
| glClearColor(0, 1, 0, 1); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // Initialize a two-layer 2D array texture with red. |
| std::vector<GLColor> red(kTexSize * kTexSize * kLayers, GLColor::red); |
| glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA8, kTexSize, kTexSize, kLayers, 0, GL_RGBA, |
| GL_UNSIGNED_BYTE, red.data()); |
| glCopyTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, kLayerOffset, 0, 0, kTexSize, kTexSize); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Check level 0 (red from image data) and 1 (green from backbuffer clear). |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 0); |
| EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red); |
| glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 1); |
| for (int x = 0; x < kTexSize; x++) |
| { |
| for (int y = 0; y < kTexSize; y++) |
| { |
| EXPECT_PIXEL_COLOR_EQ(x, y, GLColor::green); |
| } |
| } |
| ASSERT_GL_NO_ERROR(); |
| } |
| |
| // Test if glCopyTexImage2D() implementation performs conversions well from GL_TEXTURE_3D to |
| // GL_TEXTURE_2D. |
| TEST_P(CopyTexImageTestES3, CopyTexSubImageFromTexture3D) |
| { |
| // TODO(anglebug.com/3801) |
| // Seems to fail on D3D11 Windows. |
| ANGLE_SKIP_TEST_IF(IsD3D11() && IsWindows()); |
| |
| constexpr GLsizei kTexSize = 4; |
| constexpr GLsizei kLayers = 2; |
| std::vector<GLColor> red(kTexSize * kTexSize * kLayers, GLColor::red); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo); |
| glBindTexture(GL_TEXTURE_2D, 0); |
| |
| // We will be reading from zeroth color attachment. |
| glReadBuffer(GL_COLOR_ATTACHMENT0); |
| |
| GLTexture src_object_id; |
| glBindTexture(GL_TEXTURE_3D, src_object_id); |
| glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA8, kTexSize, kTexSize, kLayers, 0, GL_RGBA, |
| GL_UNSIGNED_BYTE, NULL); |
| glTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, 1, kTexSize, kTexSize, 1, GL_RGBA, GL_UNSIGNED_BYTE, |
| red.data()); |
| glFramebufferTextureLayer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, src_object_id, 0, 1); |
| ASSERT_GL_NO_ERROR(); |
| |
| GLTexture dst_object_id; |
| glBindTexture(GL_TEXTURE_2D, dst_object_id); |
| glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 0, 0, kTexSize, kTexSize, 0); |
| glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, dst_object_id, |
| 0); |
| EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red); |
| ASSERT_GL_NO_ERROR(); |
| } |
| |
| // Test that copying from a non-zero base texture works. |
| TEST_P(CopyTexImageTestES3, CopyTexSubImageFromNonZeroBase) |
| { |
| // http://anglebug.com/5000 |
| ANGLE_SKIP_TEST_IF(IsOpenGL() && IsIntel() && IsWindows()); |
| |
| constexpr GLsizei kTexSize = 4; |
| std::vector<GLColor> red(kTexSize * kTexSize, GLColor::red); |
| std::vector<GLColor> green(kTexSize * kTexSize, GLColor::green); |
| |
| // Create a framebuffer attached to a non-zero base texture |
| GLTexture srcColor; |
| glBindTexture(GL_TEXTURE_2D, srcColor); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, kTexSize, kTexSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| red.data()); |
| glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA8, kTexSize, kTexSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| green.data()); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 1); |
| ASSERT_GL_NO_ERROR(); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, srcColor, 1); |
| ASSERT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER); |
| |
| // Create a texture with an identical format |
| GLTexture dstColor; |
| glBindTexture(GL_TEXTURE_2D, dstColor); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, kTexSize, kTexSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| nullptr); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Copy into a part of this texture. |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, kTexSize / 2, kTexSize / 2); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Verify it. |
| constexpr std::array<GLubyte, 4> kExpected = {0, 255, 0, 255}; |
| verifyResults(dstColor, kExpected.data(), kTexSize, 0, 0, kTexSize / 2, kTexSize / 2); |
| |
| // Copy into another part of the texture. The previous verification ensures that the texture's |
| // internal image is allocated, so this should be a direct copy. |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 0, kTexSize / 2, kTexSize / 2, 0, 0, kTexSize / 2, |
| kTexSize / 2); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Verify it. |
| verifyResults(dstColor, kExpected.data(), kTexSize, kTexSize / 2, kTexSize / 2, kTexSize, |
| kTexSize); |
| } |
| |
| // Test that copying into a non-zero base texture works. |
| TEST_P(CopyTexImageTestES3, CopyTexSubImageToNonZeroBase) |
| { |
| // http://anglebug.com/5000 |
| ANGLE_SKIP_TEST_IF(IsOpenGL() && IsIntel() && IsWindows()); |
| |
| constexpr GLsizei kTexSize = 4; |
| std::vector<GLColor> green(kTexSize * kTexSize, GLColor::green); |
| |
| // Create a framebuffer attached to a non-zero base texture |
| GLTexture srcColor; |
| glBindTexture(GL_TEXTURE_2D, srcColor); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, kTexSize, kTexSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| green.data()); |
| ASSERT_GL_NO_ERROR(); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, srcColor, 0); |
| ASSERT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER); |
| |
| // Create a texture with an identical format |
| GLTexture dstColor; |
| glBindTexture(GL_TEXTURE_2D, dstColor); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, kTexSize, kTexSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| nullptr); |
| glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA8, kTexSize, kTexSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| nullptr); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 1); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Copy into a part of this texture. |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, 0, 0, kTexSize / 2, kTexSize / 2); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Verify it. |
| constexpr std::array<GLubyte, 4> kExpected = {0, 255, 0, 255}; |
| verifyResults(dstColor, kExpected.data(), kTexSize, 0, 0, kTexSize / 2, kTexSize / 2); |
| |
| // Copy into another part of the texture. The previous verification ensures that the texture's |
| // internal image is allocated, so this should be a direct copy. |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| glCopyTexSubImage2D(GL_TEXTURE_2D, 1, kTexSize / 2, kTexSize / 2, 0, 0, kTexSize / 2, |
| kTexSize / 2); |
| ASSERT_GL_NO_ERROR(); |
| |
| // Verify it. |
| verifyResults(dstColor, kExpected.data(), kTexSize, kTexSize / 2, kTexSize / 2, kTexSize, |
| kTexSize); |
| } |
| |
| // Initialize the 3D texture we will copy the subImage data into |
| void CopyTexImageTestES3::initialize3DTexture(GLTexture &texture, |
| const GLsizei imageWidth, |
| const GLsizei imageHeight, |
| const GLsizei imageDepth, |
| const GLColor *textureData) |
| { |
| glBindTexture(GL_TEXTURE_3D, texture); |
| glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA, imageWidth, imageHeight, imageDepth, 0, GL_RGBA, |
| GL_UNSIGNED_BYTE, textureData); |
| glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_REPEAT); |
| glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_REPEAT); |
| glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_REPEAT); |
| glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| } |
| |
| void CopyTexImageTestES3::initialize2DTexture(GLTexture &texture, |
| const GLsizei imageWidth, |
| const GLsizei imageHeight, |
| const GLColor *textureData) |
| { |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, imageWidth, imageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, |
| textureData); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| } |
| |
| void CopyTexImageTestES3::initialize2DTextureUShort4444(GLTexture &texture, |
| const GLsizei imageWidth, |
| const GLsizei imageHeight, |
| const GLColor *textureData) |
| { |
| glBindTexture(GL_TEXTURE_2D, texture); |
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, imageWidth, imageHeight, 0, GL_RGBA, |
| GL_UNSIGNED_SHORT_4_4_4_4, textureData); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| } |
| |
| void CopyTexImageTestES3::fillTexture(std::vector<GLColor> &texture, const GLColor color) |
| { |
| for (auto &texel : texture) |
| { |
| texel = color; |
| } |
| } |
| |
| void CopyTexImageTestES3::clearTexture(GLFramebuffer &fbo, GLTexture &texture, const GLColor color) |
| { |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| glClearColor(color.R, color.G, color.B, color.A); |
| glClear(GL_COLOR_BUFFER_BIT); |
| EXPECT_PIXEL_COLOR_EQ(0, 0, color); |
| } |
| |
| void CopyTexImageTestES3::copyTexSubImage3D(GLTexture &subTexture2D, |
| const GLint xOffset, |
| const GLint yOffset, |
| const GLsizei subImageWidth, |
| const GLsizei subImageHeight, |
| const GLsizei imageDepth) |
| { |
| // Copy the 2D sub-image into the 3D texture |
| for (int currLayer = 0; currLayer < imageDepth; ++currLayer) |
| { |
| // Bind the 2D texture to GL_COLOR_ATTACHMENT0 |
| glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, |
| subTexture2D, 0); |
| ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); |
| glCopyTexSubImage3D(GL_TEXTURE_3D, 0, xOffset, yOffset, currLayer, 0, 0, subImageWidth, |
| subImageHeight); |
| ASSERT_GL_NO_ERROR(); |
| } |
| } |
| |
| void CopyTexImageTestES3::verifyCopyTexSubImage3D(GLTexture &texture3D, |
| const GLint xOffset, |
| const GLint yOffset, |
| const GLColor subImageColor) |
| { |
| // Bind to an FBO to check the copy was successful |
| for (int currLayer = 0; currLayer < kImageDepth; ++currLayer) |
| { |
| glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture3D, 0, currLayer); |
| ASSERT_GL_NO_ERROR(); |
| EXPECT_PIXEL_COLOR_EQ(xOffset, yOffset, subImageColor); |
| } |
| } |
| |
| // Test glCopyTexSubImage3D with initialized texture data |
| TEST_P(CopyTexImageTestES3, 3DSubImageRawTextureData) |
| { |
| // Texture data |
| std::vector<GLColor> textureData(kImageWidth * kImageHeight * kImageDepth); |
| |
| // Fill the textures with color |
| fillTexture(textureData, GLColor::red); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| |
| GLTexture texture3D; |
| initialize3DTexture(texture3D, kImageWidth, kImageHeight, kImageDepth, textureData.data()); |
| |
| // The 2D texture that will be the sub-image copied into the destination texture |
| GLTexture subTexture2D; |
| initialize2DTexture(subTexture2D, kSubImageWidth, kSubImageHeight, nullptr); |
| clearTexture(fbo, subTexture2D, kSubImageColor); |
| |
| // Copy the 2D subimage into the 3D texture |
| copyTexSubImage3D(subTexture2D, kXOffset, kYOffset, kSubImageWidth, kSubImageHeight, |
| kImageDepth); |
| |
| // Verify the color wasn't overwritten |
| verifyCopyTexSubImage3D(texture3D, 0, 0, GLColor::red); |
| // Verify the copy succeeded |
| verifyCopyTexSubImage3D(texture3D, kXOffset, kYOffset, kSubImageColor); |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glBindTexture(GL_TEXTURE_2D, 0); |
| glBindTexture(GL_TEXTURE_3D, 0); |
| } |
| |
| // Test glCopyTexSubImage3D with initialized texture data that was drawn to |
| TEST_P(CopyTexImageTestES3, 3DSubImageDrawTextureData) |
| { |
| // TODO(anglebug.com/3801) |
| ANGLE_SKIP_TEST_IF(IsWindows() && IsD3D11()); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| |
| // The 3D texture we will copy the sub-image into |
| GLTexture texture3D; |
| initialize3DTexture(texture3D, kImageWidth, kImageHeight, kImageDepth, nullptr); |
| |
| // Draw to each layer in the 3D texture |
| for (int currLayer = 0; currLayer < kImageDepth; ++currLayer) |
| { |
| ANGLE_GL_PROGRAM(greenProgram, essl1_shaders::vs::Simple(), essl1_shaders::fs::Green()); |
| glFramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture3D, 0, |
| currLayer); |
| glFramebufferTextureLayer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture3D, 0, |
| currLayer); |
| ASSERT_GL_NO_ERROR(); |
| glUseProgram(greenProgram); |
| drawQuad(greenProgram.get(), std::string(essl1_shaders::PositionAttrib()), 0.0f); |
| ASSERT_GL_NO_ERROR(); |
| EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green); |
| } |
| |
| // The 2D texture that will be the sub-image copied into the destination texture |
| GLTexture subTexture2D; |
| initialize2DTexture(subTexture2D, kSubImageWidth, kSubImageHeight, nullptr); |
| clearTexture(fbo, subTexture2D, kSubImageColor); |
| |
| // Copy the 2D sub-image into the 3D texture |
| copyTexSubImage3D(subTexture2D, kXOffset, kYOffset, kSubImageWidth, kSubImageHeight, |
| kImageDepth); |
| |
| // Verify the color wasn't overwritten |
| verifyCopyTexSubImage3D(texture3D, 0, 0, GLColor::green); |
| // Verify the copy succeeded |
| verifyCopyTexSubImage3D(texture3D, kXOffset, kYOffset, kSubImageColor); |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glBindTexture(GL_TEXTURE_2D, 0); |
| glBindTexture(GL_TEXTURE_3D, 0); |
| } |
| |
| // Test glCopyTexSubImage3D with mismatched texture formats |
| TEST_P(CopyTexImageTestES3, 3DSubImageDrawMismatchedTextureTypes) |
| { |
| // TODO(anglebug.com/3801) |
| ANGLE_SKIP_TEST_IF(IsWindows() && IsD3D11()); |
| |
| // TODO(anglebug.com/5491) |
| ANGLE_SKIP_TEST_IF(IsIOS() && IsOpenGLES()); |
| |
| GLFramebuffer fbo; |
| glBindFramebuffer(GL_FRAMEBUFFER, fbo); |
| |
| // The 3D texture we will copy the sub-image into |
| GLTexture texture3D; |
| initialize3DTexture(texture3D, kImageWidth, kImageHeight, kImageDepth, nullptr); |
| |
| // Draw to each layer in the 3D texture |
| for (int currLayer = 0; currLayer < kImageDepth; ++currLayer) |
| { |
| ANGLE_GL_PROGRAM(greenProgram, essl1_shaders::vs::Simple(), essl1_shaders::fs::Green()); |
| glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture3D, 0, currLayer); |
| ASSERT_GL_NO_ERROR(); |
| glUseProgram(greenProgram); |
| drawQuad(greenProgram.get(), std::string(essl1_shaders::PositionAttrib()), 0.0f); |
| ASSERT_GL_NO_ERROR(); |
| EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::green); |
| } |
| |
| // The 2D texture that will be the sub-image copied into the destination texture |
| GLTexture subTexture2D; |
| initialize2DTextureUShort4444(subTexture2D, kSubImageWidth, kSubImageHeight, nullptr); |
| clearTexture(fbo, subTexture2D, kSubImageColor); |
| |
| // Copy the 2D sub-image into the 3D texture |
| copyTexSubImage3D(subTexture2D, kXOffset, kYOffset, kSubImageWidth, kSubImageHeight, |
| kImageDepth); |
| |
| // Verify the color wasn't overwritten |
| verifyCopyTexSubImage3D(texture3D, 0, 0, GLColor::green); |
| // Verify the copy succeeded |
| verifyCopyTexSubImage3D(texture3D, kXOffset, kYOffset, kSubImageColor); |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glBindTexture(GL_TEXTURE_2D, 0); |
| glBindTexture(GL_TEXTURE_3D, 0); |
| } |
| |
| ANGLE_INSTANTIATE_TEST(CopyTexImageTest, |
| ANGLE_ALL_TEST_PLATFORMS_ES2, |
| ES2_D3D11_PRESENT_PATH_FAST(), |
| ES3_VULKAN(), |
| WithEmulateCopyTexImage2DFromRenderbuffers(ES2_OPENGL()), |
| WithEmulateCopyTexImage2DFromRenderbuffers(ES2_OPENGLES())); |
| |
| GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(CopyTexImageTestES3); |
| ANGLE_INSTANTIATE_TEST(CopyTexImageTestES3, |
| ANGLE_ALL_TEST_PLATFORMS_ES3, |
| WithEmulateCopyTexImage2DFromRenderbuffers(ES3_OPENGL()), |
| WithEmulateCopyTexImage2DFromRenderbuffers(ES3_OPENGLES())); |
| } // namespace angle |
