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kc3-lang/angle/src/tests/gl_tests/FramebufferMultiviewTest.cpp
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Author :
Martin Radev
Date : 2017-09-05 11:59:52
Hash : 61e710b6
Message : GL: Optimize multi-view layered Clear* commands Until this patch multi-view layered framebuffers used to be cleared by attaching a single layer of each attachment to a framebuffer and calling the Clear* command for that internal framebuffer. According to the GL 4.1+ specifications, Clear* commands clear all of the layers of an attached 2D texture array. If all of the layers are active for a multi-view layered framebuffer, then we can directly call the corresponding Clear* command instead of iterating over each layer and clearing it. BUG=angleproject:2062 TEST=angle_end2end_tests Change-Id: Ie4dfd9fff47715b502f358272bfc47c0373c4e91 Reviewed-on: https://chromium-review.googlesource.com/649209 Commit-Queue: Martin Radev <mradev@nvidia.com> Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
- src/tests/gl_tests/FramebufferMultiviewTest.cpp
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// // Copyright 2017 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. // // Framebuffer multiview tests: // The tests modify and examine the multiview state. // #include "test_utils/ANGLETest.h" #include "test_utils/gl_raii.h" using namespace angle; namespace { std::vector<GLenum> GetDrawBufferRange(size_t numColorAttachments) { std::vector<GLenum> drawBuffers(numColorAttachments); const size_t kBase = static_cast<size_t>(GL_COLOR_ATTACHMENT0); for (size_t i = 0u; i < drawBuffers.size(); ++i) { drawBuffers[i] = static_cast<GLenum>(kBase + i); } return drawBuffers; } } // namespace class FramebufferMultiviewTest : public ANGLETest { protected: FramebufferMultiviewTest() { setWindowWidth(128); setWindowHeight(128); setWebGLCompatibilityEnabled(true); } void SetUp() override { ANGLETest::SetUp(); glRequestExtensionANGLE = reinterpret_cast<PFNGLREQUESTEXTENSIONANGLEPROC>( eglGetProcAddress("glRequestExtensionANGLE")); } // Requests the ANGLE_multiview extension and returns true if the operation succeeds. bool requestMultiviewExtension() { if (extensionRequestable("GL_ANGLE_multiview")) { glRequestExtensionANGLE("GL_ANGLE_multiview"); } if (!extensionEnabled("GL_ANGLE_multiview")) { std::cout << "Test skipped due to missing GL_ANGLE_multiview." << std::endl; return false; } return true; } PFNGLREQUESTEXTENSIONANGLEPROC glRequestExtensionANGLE = nullptr; }; class FramebufferMultiviewSideBySideClearTest : public FramebufferMultiviewTest { protected: FramebufferMultiviewSideBySideClearTest() {} void initializeFBOs(size_t numColorBuffers, bool stencil, bool depth) { const std::vector<GLenum> &drawBuffers = GetDrawBufferRange(2); // Generate textures. mColorTex.resize(numColorBuffers); for (size_t i = 0u; i < numColorBuffers; ++i) { glBindTexture(GL_TEXTURE_2D, mColorTex[i]); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 4, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); } if (stencil) { glBindTexture(GL_TEXTURE_2D, mStencilTex); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, 4, 2, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr); } else if (depth) { glBindTexture(GL_TEXTURE_2D, mDepthTex); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, 4, 2, 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr); } // Generate multiview fbo and attach textures. const GLint kViewportOffsets[4] = {1, 0, 3, 0}; glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); const size_t kBase = static_cast<size_t>(GL_COLOR_ATTACHMENT0); for (size_t i = 0u; i < numColorBuffers; ++i) { glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, static_cast<GLenum>(kBase + i), mColorTex[i], 0, 2, &kViewportOffsets[0]); } if (stencil) { glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, mStencilTex, 0, 2, &kViewportOffsets[0]); } else if (depth) { glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, mDepthTex, 0, 2, &kViewportOffsets[0]); } glDrawBuffers(static_cast<GLsizei>(drawBuffers.size()), drawBuffers.data()); // Generate non-multiview fbo and attach textures. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); for (size_t i = 0u; i < numColorBuffers; ++i) { glFramebufferTexture2D(GL_FRAMEBUFFER, static_cast<GLenum>(kBase + i), GL_TEXTURE_2D, mColorTex[i], 0); } if (stencil) { glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, mStencilTex, 0); } else if (depth) { glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, mDepthTex, 0); } glDrawBuffers(static_cast<GLsizei>(drawBuffers.size()), drawBuffers.data()); ASSERT_GL_NO_ERROR(); } void checkAlternatingColumnsOfRedAndGreenInFBO() { // column 0 EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red); EXPECT_PIXEL_COLOR_EQ(0, 1, GLColor::red); // column 1 EXPECT_PIXEL_COLOR_EQ(1, 0, GLColor::green); EXPECT_PIXEL_COLOR_EQ(1, 1, GLColor::green); // column 2 EXPECT_PIXEL_COLOR_EQ(2, 0, GLColor::red); EXPECT_PIXEL_COLOR_EQ(2, 1, GLColor::red); // column 3 EXPECT_PIXEL_COLOR_EQ(3, 0, GLColor::green); EXPECT_PIXEL_COLOR_EQ(3, 1, GLColor::green); } GLFramebuffer mMultiviewFBO; GLFramebuffer mNonMultiviewFBO; std::vector<GLTexture> mColorTex; GLTexture mDepthTex; GLTexture mStencilTex; }; class FramebufferMultiviewLayeredClearTest : public FramebufferMultiviewTest { protected: FramebufferMultiviewLayeredClearTest() {} void initializeFBOs(int width, int height, int numLayers, int baseViewIndex, int numViews, int numColorAttachments, bool stencil, bool depth) { ASSERT(baseViewIndex + numViews <= numLayers); // Generate textures. mColorTex.resize(numColorAttachments); for (int i = 0; i < numColorAttachments; ++i) { glBindTexture(GL_TEXTURE_2D_ARRAY, mColorTex[i]); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA8, width, height, numLayers, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); } if (stencil) { glBindTexture(GL_TEXTURE_2D_ARRAY, mStencilTex); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_DEPTH24_STENCIL8, width, height, numLayers, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr); } else if (depth) { glBindTexture(GL_TEXTURE_2D_ARRAY, mDepthTex); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_DEPTH_COMPONENT32F, width, height, numLayers, 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr); } // Generate multiview FBO and attach textures. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); for (int i = 0; i < numColorAttachments; ++i) { glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + i), mColorTex[i], 0, baseViewIndex, numViews); } if (stencil) { glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, mStencilTex, 0, baseViewIndex, numViews); } else if (depth) { glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, mDepthTex, 0, baseViewIndex, numViews); } const auto &drawBuffers = GetDrawBufferRange(numColorAttachments); glDrawBuffers(numColorAttachments, drawBuffers.data()); // Generate non-multiview FBOs and attach textures. mNonMultiviewFBO.resize(numLayers); for (int i = 0; i < numLayers; ++i) { glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO[i]); for (int j = 0; j < numColorAttachments; ++j) { glFramebufferTextureLayer(GL_FRAMEBUFFER, static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + j), mColorTex[j], 0, i); } if (stencil) { glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, mStencilTex, 0, i); } else if (depth) { glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, mDepthTex, 0, i); } glDrawBuffers(numColorAttachments, drawBuffers.data()); glClearColor(1, 0, 0, 1); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); } ASSERT_GL_NO_ERROR(); } GLColor getLayerColor(size_t layer, GLenum attachment, GLint x, GLint y) { ASSERT(layer < mNonMultiviewFBO.size()); glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO[layer]); glReadBuffer(attachment); return angle::ReadColor(x, y); } GLColor getLayerColor(size_t layer, GLenum attachment) { return getLayerColor(layer, attachment, 0, 0); } GLFramebuffer mMultiviewFBO; std::vector<GLFramebuffer> mNonMultiviewFBO; std::vector<GLTexture> mColorTex; GLTexture mDepthTex; GLTexture mStencilTex; }; // Test that the framebuffer tokens introduced by ANGLE_multiview can be used to query the // framebuffer state and that their corresponding default values are correctly set. TEST_P(FramebufferMultiviewTest, DefaultState) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, 0); GLint numViews = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_ANGLE, &numViews); ASSERT_GL_NO_ERROR(); EXPECT_EQ(1, numViews); GLint baseViewIndex = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_ANGLE, &baseViewIndex); ASSERT_GL_NO_ERROR(); EXPECT_EQ(0, baseViewIndex); GLint multiviewLayout = GL_FRAMEBUFFER_MULTIVIEW_SIDE_BY_SIDE_ANGLE; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_MULTIVIEW_LAYOUT_ANGLE, &multiviewLayout); ASSERT_GL_NO_ERROR(); EXPECT_EQ(GL_NONE, multiviewLayout); GLint viewportOffsets[2] = {-1, -1}; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_VIEWPORT_OFFSETS_ANGLE, &viewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_EQ(0, viewportOffsets[0]); EXPECT_EQ(0, viewportOffsets[1]); } // Test that without having the ANGLE_multiview extension, querying for the framebuffer state using // the ANGLE_multiview tokens results in an INVALID_ENUM error. TEST_P(FramebufferMultiviewTest, NegativeFramebufferStateQueries) { GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, 0); GLint numViews = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_ANGLE, &numViews); EXPECT_GL_ERROR(GL_INVALID_ENUM); GLint baseViewIndex = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_ANGLE, &baseViewIndex); EXPECT_GL_ERROR(GL_INVALID_ENUM); GLint multiviewLayout = GL_FRAMEBUFFER_MULTIVIEW_SIDE_BY_SIDE_ANGLE; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_MULTIVIEW_LAYOUT_ANGLE, &multiviewLayout); EXPECT_GL_ERROR(GL_INVALID_ENUM); GLint viewportOffsets[2] = {-1, -1}; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_VIEWPORT_OFFSETS_ANGLE, &viewportOffsets[0]); EXPECT_GL_ERROR(GL_INVALID_ENUM); } // Test that the correct errors are generated whenever glFramebufferTextureMultiviewSideBySideANGLE // is called with invalid arguments. TEST_P(FramebufferMultiviewTest, InvalidMultiviewSideBySideArguments) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); // Negative offsets. GLint viewportOffsets[2] = {-1}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 1, &viewportOffsets[0]); EXPECT_GL_ERROR(GL_INVALID_VALUE); // Negative number of views. viewportOffsets[0] = 0; viewportOffsets[1] = 0; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, -1, &viewportOffsets[0]); EXPECT_GL_ERROR(GL_INVALID_VALUE); } // Test that the correct errors are generated whenever glFramebufferTextureMultiviewLayeredANGLE is // called with invalid arguments. TEST_P(FramebufferMultiviewTest, InvalidMultiviewLayeredArguments) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D_ARRAY, tex); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA8, 1, 1, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); ASSERT_GL_NO_ERROR(); // Negative base view index. glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, -1, 1); EXPECT_GL_ERROR(GL_INVALID_VALUE); // baseViewIndex + numViews is greater than MAX_TEXTURE_LAYERS. GLint maxTextureLayers = 0; glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, &maxTextureLayers); glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, maxTextureLayers, 1); EXPECT_GL_ERROR(GL_INVALID_VALUE); } // Test that an INVALID_OPERATION error is generated whenever the ANGLE_multiview extension is not // available. TEST_P(FramebufferMultiviewTest, ExtensionNotAvailableCheck) { GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); ASSERT_GL_NO_ERROR(); const GLint kViewportOffsets[2] = {0}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 1, &kViewportOffsets[0]); EXPECT_GL_ERROR(GL_INVALID_OPERATION); } // Test that glFramebufferTextureMultiviewSideBySideANGLE modifies the internal multiview state. TEST_P(FramebufferMultiviewTest, ModifySideBySideState) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); const GLint kViewportOffsets[4] = {0, 0, 1, 2}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 2, &kViewportOffsets[0]); ASSERT_GL_NO_ERROR(); GLint numViews = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_ANGLE, &numViews); ASSERT_GL_NO_ERROR(); EXPECT_EQ(2, numViews); GLint baseViewIndex = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_ANGLE, &baseViewIndex); ASSERT_GL_NO_ERROR(); EXPECT_EQ(0, baseViewIndex); GLint multiviewLayout = GL_NONE; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_MULTIVIEW_LAYOUT_ANGLE, &multiviewLayout); ASSERT_GL_NO_ERROR(); EXPECT_EQ(GL_FRAMEBUFFER_MULTIVIEW_SIDE_BY_SIDE_ANGLE, multiviewLayout); GLint internalViewportOffsets[4] = {-1}; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_VIEWPORT_OFFSETS_ANGLE, &internalViewportOffsets[0]); ASSERT_GL_NO_ERROR(); for (size_t i = 0u; i < 4u; ++i) { EXPECT_EQ(kViewportOffsets[i], internalViewportOffsets[i]); } } // Test framebuffer completeness status of a side-by-side framebuffer with color and depth // attachments. TEST_P(FramebufferMultiviewTest, IncompleteViewTargetsSideBySide) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); const GLint kViewportOffsets[4] = {0, 0, 2, 0}; const GLint kOtherViewportOffsets[4] = {2, 0, 4, 0}; // Set the 0th attachment and keep it as it is till the end of the test. The 1st or depth // attachment will be modified to change the framebuffer's status. glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 2, &kViewportOffsets[0]); ASSERT_GL_NO_ERROR(); // Color attachment 1. { GLTexture otherTex; glBindTexture(GL_TEXTURE_2D, otherTex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); // Test framebuffer completeness when the number of views differ. glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, otherTex, 0, 1, &kViewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test framebuffer completeness when the viewport offsets differ. glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, otherTex, 0, 2, &kOtherViewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test framebuffer completeness when attachment layouts differ. glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, otherTex, 0); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test that framebuffer is complete when the number of views, viewport offsets and layouts // are the same. glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, otherTex, 0, 2, &kViewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Reset attachment 1 glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, 0, 0, 1, &kViewportOffsets[0]); } // Depth attachment. { GLTexture depthTex; glBindTexture(GL_TEXTURE_2D, depthTex); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, 1, 1, 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr); // Test framebuffer completeness when the number of views differ. glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depthTex, 0, 1, &kViewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test framebuffer completeness when the viewport offsets differ. glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depthTex, 0, 2, &kOtherViewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test framebuffer completeness when attachment layouts differ. glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthTex, 0); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test that framebuffer is complete when the number of views, viewport offsets and layouts // are the same. glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depthTex, 0, 2, &kViewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); } } // Test that the active read framebuffer cannot be read from through glCopyTex* if it has multi-view // attachments. TEST_P(FramebufferMultiviewTest, InvalidCopyTex) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); const GLint kViewportOffsets[2] = {0}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 1, &kViewportOffsets[0]); ASSERT_GL_NO_ERROR(); // Test glCopyTexImage2D and glCopyTexSubImage2D. { GLTexture tex2; glBindTexture(GL_TEXTURE_2D, tex2); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 0, 0, 1, 1, 0); EXPECT_GL_ERROR(GL_INVALID_FRAMEBUFFER_OPERATION); glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 1, 1); EXPECT_GL_ERROR(GL_INVALID_FRAMEBUFFER_OPERATION); } // Test glCopyTexSubImage3D. { GLTexture tex2; glBindTexture(GL_TEXTURE_3D, tex2); glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA8, 1, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); glCopyTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, 0, 0, 0, 1, 1); EXPECT_GL_ERROR(GL_INVALID_FRAMEBUFFER_OPERATION); } } // Test that glBlitFramebuffer generates an invalid framebuffer operation when either the current // draw framebuffer, or current read framebuffer have multiview attachments. TEST_P(FramebufferMultiviewTest, InvalidBlit) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); const GLint kViewportOffsets[2] = {0}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 1, &kViewportOffsets[0]); ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); ASSERT_GL_NO_ERROR(); // Blit with the active read framebuffer having multiview attachments. { glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo); glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); glBlitFramebuffer(0, 0, 1, 1, 0, 0, 1, 1, GL_COLOR_BUFFER_BIT, GL_NEAREST); EXPECT_GL_ERROR(GL_INVALID_FRAMEBUFFER_OPERATION); } // Blit with the active draw framebuffer having multiview attachments. { glBindFramebuffer(GL_READ_FRAMEBUFFER, 0); glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo); glBlitFramebuffer(0, 0, 1, 1, 0, 0, 1, 1, GL_COLOR_BUFFER_BIT, GL_NEAREST); EXPECT_GL_ERROR(GL_INVALID_FRAMEBUFFER_OPERATION); } } // Test that glReadPixels generates an invalid framebuffer operation error if the current read // framebuffer has a multi-view layout. TEST_P(FramebufferMultiviewTest, InvalidReadPixels) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D, tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); const GLint kViewportOffsets[2] = {0}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 1, &kViewportOffsets[0]); ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); ASSERT_GL_NO_ERROR(); GLColor pixelColor; glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixelColor.R); EXPECT_GL_ERROR(GL_INVALID_FRAMEBUFFER_OPERATION); } // Test that glClear clears only the contents of each view if the scissor test is enabled. TEST_P(FramebufferMultiviewSideBySideClearTest, ColorBufferClear) { if (!requestMultiviewExtension()) { return; } initializeFBOs(1, false, false); // Clear the contents of the texture. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); glClearColor(1, 0, 0, 1); glClear(GL_COLOR_BUFFER_BIT); // Bind and specify viewport/scissor dimensions for each view. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glViewport(0, 0, 1, 2); glScissor(0, 0, 1, 2); glEnable(GL_SCISSOR_TEST); glClearColor(0, 1, 0, 1); glClear(GL_COLOR_BUFFER_BIT); glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); checkAlternatingColumnsOfRedAndGreenInFBO(); } // Test that glFramebufferTextureMultiviewLayeredANGLE modifies the internal multiview state. TEST_P(FramebufferMultiviewTest, ModifyLayeredState) { if (!requestMultiviewExtension()) { return; } GLFramebuffer multiviewFBO; glBindFramebuffer(GL_FRAMEBUFFER, multiviewFBO); GLTexture tex; glBindTexture(GL_TEXTURE_2D_ARRAY, tex); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA8, 1, 1, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); ASSERT_GL_NO_ERROR(); glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 1, 2); ASSERT_GL_NO_ERROR(); GLint numViews = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_ANGLE, &numViews); ASSERT_GL_NO_ERROR(); EXPECT_EQ(2, numViews); GLint baseViewIndex = -1; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_ANGLE, &baseViewIndex); ASSERT_GL_NO_ERROR(); EXPECT_EQ(1, baseViewIndex); GLint multiviewLayout = GL_NONE; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_MULTIVIEW_LAYOUT_ANGLE, &multiviewLayout); ASSERT_GL_NO_ERROR(); EXPECT_EQ(GL_FRAMEBUFFER_MULTIVIEW_LAYERED_ANGLE, multiviewLayout); GLint internalViewportOffsets[2] = {-1}; glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_VIEWPORT_OFFSETS_ANGLE, &internalViewportOffsets[0]); ASSERT_GL_NO_ERROR(); EXPECT_EQ(0, internalViewportOffsets[0]); EXPECT_EQ(0, internalViewportOffsets[1]); } // Test framebuffer completeness status of a layered framebuffer with color attachments. TEST_P(FramebufferMultiviewTest, IncompleteViewTargetsLayered) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); GLTexture tex; glBindTexture(GL_TEXTURE_2D_ARRAY, tex); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA8, 1, 1, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); // Set the 0th attachment and keep it as it is till the end of the test. The 1st color // attachment will be modified to change the framebuffer's status. glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, tex, 0, 0, 2); ASSERT_GL_NO_ERROR(); GLTexture otherTexLayered; glBindTexture(GL_TEXTURE_2D_ARRAY, otherTexLayered); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA8, 1, 1, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); // Test framebuffer completeness when the base view index differs. glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, otherTexLayered, 0, 1, 2); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test framebuffer completeness when the 1st attachment has a side-by-side layout. const int kViewportOffsets[4] = {0, 0, 0, 0}; GLTexture otherTex2D; glBindTexture(GL_TEXTURE_2D, otherTex2D); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 4, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, otherTex2D, 0, 2, kViewportOffsets); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test framebuffer completeness when the 1st attachment has a non-multiview layout. glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, otherTexLayered, 0, 0); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_ANGLE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); // Test that framebuffer is complete when the number of views, base view index and layouts are // the same. glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, otherTexLayered, 0, 0, 2); ASSERT_GL_NO_ERROR(); EXPECT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER)); } // Test that glClear clears all of the contents if the scissor test is disabled. TEST_P(FramebufferMultiviewSideBySideClearTest, ClearWithDisabledScissorTest) { if (!requestMultiviewExtension()) { return; } initializeFBOs(1, false, false); // Clear the contents of the texture. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); glClearColor(0, 0, 0, 1); glClear(GL_COLOR_BUFFER_BIT); // Bind and specify viewport/scissor dimensions for each view. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glViewport(0, 0, 1, 2); glScissor(0, 0, 1, 2); glClearColor(1, 0, 0, 1); glClear(GL_COLOR_BUFFER_BIT); glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); for (int i = 0; i < 4; ++i) { for (int j = 0; j < 2; ++j) { EXPECT_PIXEL_COLOR_EQ(i, j, GLColor::red); } } } // Test that glClear clears the depth buffer of each view. TEST_P(FramebufferMultiviewSideBySideClearTest, DepthBufferClear) { if (!requestMultiviewExtension()) { return; } // Create program to draw a quad. const std::string &vs = "#version 300 es\n" "in vec3 vPos;\n" "void main(){\n" " gl_Position = vec4(vPos, 1.);\n" "}\n"; const std::string &fs = "#version 300 es\n" "precision mediump float;\n" "uniform vec3 uCol;\n" "out vec4 col;\n" "void main(){\n" " col = vec4(uCol,1.);\n" "}\n"; ANGLE_GL_PROGRAM(program, vs, fs); glUseProgram(program); GLuint mColorUniformLoc = glGetUniformLocation(program, "uCol"); initializeFBOs(1, false, true); glEnable(GL_DEPTH_TEST); // Clear the contents of the texture. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); glClearColor(0, 0, 0, 0); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Dirty the depth and color buffers. glUniform3f(mColorUniformLoc, 1.0f, 0.0f, 0.0f); drawQuad(program, "vPos", 0.0f, 1.0f, true); // Switch to the multi-view framebuffer and clear only the rectangles covered by the views. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glViewport(0, 0, 1, 2); glScissor(0, 0, 1, 2); glEnable(GL_SCISSOR_TEST); glClear(GL_DEPTH_BUFFER_BIT); // Draw a fullscreen quad to fill the cleared regions. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); glViewport(0, 0, 4, 2); glScissor(0, 0, 4, 2); glUniform3f(mColorUniformLoc, 0.0f, 1.0f, 0.0f); drawQuad(program, "vPos", 0.5f, 1.0f, true); checkAlternatingColumnsOfRedAndGreenInFBO(); } // Test that glClear clears the stencil buffer of each view. TEST_P(FramebufferMultiviewSideBySideClearTest, StencilBufferClear) { if (!requestMultiviewExtension()) { return; } // Create program to draw a quad. const std::string &vs = "#version 300 es\n" "in vec3 vPos;\n" "void main(){\n" " gl_Position = vec4(vPos, 1.);\n" "}\n"; const std::string &fs = "#version 300 es\n" "precision mediump float;\n" "uniform vec3 uCol;\n" "out vec4 col;\n" "void main(){\n" " col = vec4(uCol,1.);\n" "}\n"; ANGLE_GL_PROGRAM(program, vs, fs); glUseProgram(program); GLuint mColorUniformLoc = glGetUniformLocation(program, "uCol"); initializeFBOs(1, true, false); glEnable(GL_STENCIL_TEST); glDisable(GL_DEPTH_TEST); // Set clear values and clear the whole framebuffer. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); glClearColor(0, 0, 0, 0); glClearStencil(0); glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); // Update stencil test to always replace the stencil value with 0xFF. glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE); glStencilFunc(GL_ALWAYS, 0xFF, 0); // Draw a quad which covers the whole texture. glUniform3f(mColorUniformLoc, 1.0f, 0.0f, 0.0f); drawQuad(program, "vPos", 0.0f, 1.0f, true); // Switch to multiview framebuffer and clear portions of the texture. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glViewport(0, 0, 1, 2); glScissor(0, 0, 1, 2); glEnable(GL_SCISSOR_TEST); glClear(GL_STENCIL_BUFFER_BIT); // Draw a fullscreen quad, but adjust the stencil function so that only the cleared regions pass // the test. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); glViewport(0, 0, 4, 2); glScissor(0, 0, 4, 2); glStencilFunc(GL_EQUAL, 0x00, 0xFF); glUniform3f(mColorUniformLoc, 0.0f, 1.0f, 0.0f); drawQuad(program, "vPos", 0.0f, 1.0f, true); checkAlternatingColumnsOfRedAndGreenInFBO(); } // Test that glClearBufferf clears the color buffer of each view. TEST_P(FramebufferMultiviewSideBySideClearTest, ClearBufferF) { if (!requestMultiviewExtension()) { return; } initializeFBOs(2, false, false); // Clear the contents of the texture. glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); glClearColor(1, 0, 0, 1); glClear(GL_COLOR_BUFFER_BIT); // Bind and specify viewport/scissor dimensions for each view. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glViewport(0, 0, 1, 2); glScissor(0, 0, 1, 2); glEnable(GL_SCISSOR_TEST); float kClearValues[4] = {0.f, 1.f, 0.f, 1.f}; glClearBufferfv(GL_COLOR, 1, kClearValues); glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO); // Check that glClearBufferfv has not modified the 0th color attachment. glReadBuffer(GL_COLOR_ATTACHMENT0); for (int i = 0; i < 4; ++i) { for (int j = 0; j < 2; ++j) { EXPECT_PIXEL_COLOR_EQ(i, j, GLColor::red); } } // Check that glClearBufferfv has correctly modified the 1th color attachment. glReadBuffer(GL_COLOR_ATTACHMENT1); checkAlternatingColumnsOfRedAndGreenInFBO(); } // Test that glClear clears the contents of the color buffer for only the attached layers to a // layered FBO. TEST_P(FramebufferMultiviewLayeredClearTest, ColorBufferClear) { if (!requestMultiviewExtension()) { return; } initializeFBOs(1, 1, 4, 1, 2, 1, false, false); // Bind and specify viewport/scissor dimensions for each view. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glClearColor(0, 1, 0, 1); glClear(GL_COLOR_BUFFER_BIT); EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::green, getLayerColor(1, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::green, getLayerColor(2, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0)); } // Test that glClearBufferfv can be used to clear individual color buffers of a layered FBO. TEST_P(FramebufferMultiviewLayeredClearTest, ClearIndividualColorBuffer) { if (!requestMultiviewExtension()) { return; } initializeFBOs(1, 1, 4, 1, 2, 2, false, false); for (int i = 0; i < 2; ++i) { for (int layer = 0; layer < 4; ++layer) { GLenum colorAttachment = static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + i); EXPECT_EQ(GLColor::red, getLayerColor(layer, colorAttachment)); } } glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); float clearValues0[4] = {0.f, 0.f, 1.f, 1.f}; glClearBufferfv(GL_COLOR, 0, clearValues0); float clearValues1[4] = {0.f, 1.f, 0.f, 1.f}; glClearBufferfv(GL_COLOR, 1, clearValues1); EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::blue, getLayerColor(1, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::blue, getLayerColor(2, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT1)); EXPECT_EQ(GLColor::green, getLayerColor(1, GL_COLOR_ATTACHMENT1)); EXPECT_EQ(GLColor::green, getLayerColor(2, GL_COLOR_ATTACHMENT1)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT1)); } // Test that glClearBufferfi clears the contents of the stencil buffer for only the attached layers // to a layered FBO. TEST_P(FramebufferMultiviewLayeredClearTest, ClearBufferfi) { if (!requestMultiviewExtension()) { return; } // Create program to draw a quad. const std::string &vs = "#version 300 es\n" "in vec3 vPos;\n" "void main(){\n" " gl_Position = vec4(vPos, 1.);\n" "}\n"; const std::string &fs = "#version 300 es\n" "precision mediump float;\n" "uniform vec3 uCol;\n" "out vec4 col;\n" "void main(){\n" " col = vec4(uCol,1.);\n" "}\n"; ANGLE_GL_PROGRAM(program, vs, fs); glUseProgram(program); GLuint mColorUniformLoc = glGetUniformLocation(program, "uCol"); initializeFBOs(1, 1, 4, 1, 2, 1, true, false); glEnable(GL_STENCIL_TEST); glDisable(GL_DEPTH_TEST); // Set clear values. glClearColor(1, 0, 0, 1); glClearStencil(0xFF); // Clear the color and stencil buffers of each layer. for (size_t i = 0u; i < mNonMultiviewFBO.size(); ++i) { glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO[i]); glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); } // Switch to multiview framebuffer and clear portions of the texture. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glClearBufferfi(GL_DEPTH_STENCIL, 0, 0.0f, 0); // Draw a fullscreen quad, but adjust the stencil function so that only the cleared regions pass // the test. glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE); glStencilFunc(GL_EQUAL, 0x00, 0xFF); for (size_t i = 0u; i < mNonMultiviewFBO.size(); ++i) { glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO[i]); glUniform3f(mColorUniformLoc, 0.0f, 1.0f, 0.0f); drawQuad(program, "vPos", 0.0f, 1.0f, true); } EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::green, getLayerColor(1, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::green, getLayerColor(2, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0)); } // Test that glClear does not clear the content of a detached texture. TEST_P(FramebufferMultiviewLayeredClearTest, UnmodifiedDetachedTexture) { if (!requestMultiviewExtension()) { return; } initializeFBOs(1, 1, 4, 1, 2, 2, false, false); // Clear all attachments. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glClearColor(0, 1, 0, 1); glClear(GL_COLOR_BUFFER_BIT); for (int i = 0; i < 2; ++i) { GLenum colorAttachment = static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + i); EXPECT_EQ(GLColor::red, getLayerColor(0, colorAttachment)); EXPECT_EQ(GLColor::green, getLayerColor(1, colorAttachment)); EXPECT_EQ(GLColor::green, getLayerColor(2, colorAttachment)); EXPECT_EQ(GLColor::red, getLayerColor(3, colorAttachment)); } // Detach and clear again. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, 0, 0, 1, 2); glClearColor(1, 1, 0, 1); glClear(GL_COLOR_BUFFER_BIT); // Check that color attachment 0 is modified. EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::yellow, getLayerColor(1, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::yellow, getLayerColor(2, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0)); // Check that color attachment 1 is unmodified. EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT1)); EXPECT_EQ(GLColor::green, getLayerColor(1, GL_COLOR_ATTACHMENT1)); EXPECT_EQ(GLColor::green, getLayerColor(2, GL_COLOR_ATTACHMENT1)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT1)); } // Test that glClear clears only the contents within the scissor rectangle of the attached layers. TEST_P(FramebufferMultiviewLayeredClearTest, ScissoredClear) { if (!requestMultiviewExtension()) { return; } initializeFBOs(2, 1, 4, 1, 2, 1, false, false); // Bind and specify viewport/scissor dimensions for each view. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glEnable(GL_SCISSOR_TEST); glScissor(1, 0, 1, 1); glClearColor(0, 1, 0, 1); glClear(GL_COLOR_BUFFER_BIT); EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0, 1, 0)); EXPECT_EQ(GLColor::red, getLayerColor(1, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::green, getLayerColor(1, GL_COLOR_ATTACHMENT0, 1, 0)); EXPECT_EQ(GLColor::red, getLayerColor(2, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::green, getLayerColor(2, GL_COLOR_ATTACHMENT0, 1, 0)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0, 1, 0)); } // Test that glClearBufferfi clears the contents of the stencil buffer for only the attached layers // to a layered FBO. TEST_P(FramebufferMultiviewLayeredClearTest, ScissoredClearBufferfi) { if (!requestMultiviewExtension()) { return; } // Create program to draw a quad. const std::string &vs = "#version 300 es\n" "in vec3 vPos;\n" "void main(){\n" " gl_Position = vec4(vPos, 1.);\n" "}\n"; const std::string &fs = "#version 300 es\n" "precision mediump float;\n" "uniform vec3 uCol;\n" "out vec4 col;\n" "void main(){\n" " col = vec4(uCol,1.);\n" "}\n"; ANGLE_GL_PROGRAM(program, vs, fs); glUseProgram(program); GLuint mColorUniformLoc = glGetUniformLocation(program, "uCol"); initializeFBOs(1, 2, 4, 1, 2, 1, true, false); glEnable(GL_STENCIL_TEST); glDisable(GL_DEPTH_TEST); // Set clear values. glClearColor(1, 0, 0, 1); glClearStencil(0xFF); // Clear the color and stencil buffers of each layer. for (size_t i = 0u; i < mNonMultiviewFBO.size(); ++i) { glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO[i]); glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); } // Switch to multiview framebuffer and clear portions of the texture. glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glEnable(GL_SCISSOR_TEST); glScissor(0, 0, 1, 1); glClearBufferfi(GL_DEPTH_STENCIL, 0, 0.0f, 0); glDisable(GL_SCISSOR_TEST); // Draw a fullscreen quad, but adjust the stencil function so that only the cleared regions pass // the test. glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE); glStencilFunc(GL_EQUAL, 0x00, 0xFF); for (size_t i = 0u; i < mNonMultiviewFBO.size(); ++i) { glBindFramebuffer(GL_FRAMEBUFFER, mNonMultiviewFBO[i]); glUniform3f(mColorUniformLoc, 0.0f, 1.0f, 0.0f); drawQuad(program, "vPos", 0.0f, 1.0f, true); } EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::red, getLayerColor(0, GL_COLOR_ATTACHMENT0, 0, 1)); EXPECT_EQ(GLColor::green, getLayerColor(1, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::red, getLayerColor(1, GL_COLOR_ATTACHMENT0, 0, 1)); EXPECT_EQ(GLColor::green, getLayerColor(2, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::red, getLayerColor(2, GL_COLOR_ATTACHMENT0, 0, 1)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0, 0, 0)); EXPECT_EQ(GLColor::red, getLayerColor(3, GL_COLOR_ATTACHMENT0, 0, 1)); } // Test that detaching an attachment does not generate an error whenever the multi-view related // arguments are invalid. TEST_P(FramebufferMultiviewTest, InvalidMultiviewArgumentsOnDetach) { if (!requestMultiviewExtension()) { return; } GLFramebuffer fbo; glBindFramebuffer(GL_FRAMEBUFFER, fbo); // Invalid base view index. glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, 0, 0, -1, 1); EXPECT_GL_NO_ERROR(); // Invalid number of views. glFramebufferTextureMultiviewLayeredANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, 0, 0, 0, 0); EXPECT_GL_NO_ERROR(); // Invalid number of views. const GLint kValidViewportOffsets[2] = {0, 0}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, 0, 0, 0, kValidViewportOffsets); EXPECT_GL_NO_ERROR(); // Invalid viewport offsets. const GLint kInvalidViewportOffsets[2] = {-1, -1}; glFramebufferTextureMultiviewSideBySideANGLE(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, 0, 0, 1, kInvalidViewportOffsets); EXPECT_GL_NO_ERROR(); } // Test that glClear clears the contents of the color buffer whenever all layers of a 2D texture // array are attached. The test is added because a special fast code path is used for this case. TEST_P(FramebufferMultiviewLayeredClearTest, ColorBufferClearAllLayersAttached) { if (!requestMultiviewExtension()) { return; } initializeFBOs(1, 1, 2, 0, 2, 1, false, false); glBindFramebuffer(GL_FRAMEBUFFER, mMultiviewFBO); glClearColor(0, 1, 0, 1); glClear(GL_COLOR_BUFFER_BIT); EXPECT_EQ(GLColor::green, getLayerColor(0, GL_COLOR_ATTACHMENT0)); EXPECT_EQ(GLColor::green, getLayerColor(1, GL_COLOR_ATTACHMENT0)); } ANGLE_INSTANTIATE_TEST(FramebufferMultiviewTest, ES3_OPENGL()); ANGLE_INSTANTIATE_TEST(FramebufferMultiviewSideBySideClearTest, ES3_OPENGL(), ES3_D3D11()); ANGLE_INSTANTIATE_TEST(FramebufferMultiviewLayeredClearTest, ES3_OPENGL(), ES3_D3D11());