1 /*------------------------------------------------------------------------- 2 * drawElements Quality Program OpenGL ES 2.0 Module 3 * ------------------------------------------------- 4 * 5 * Copyright 2018 The Android Open Source Project 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 * 19 */ /*! 20 * \file 21 * \brief GL_EXT_multisample_render_to_texture tests. 22 */ /*--------------------------------------------------------------------*/ 23 24 #include "es2fMultisampledRenderToTextureTests.hpp" 25 26 #include "deString.h" 27 #include "deStringUtil.hpp" 28 #include "gluContextInfo.hpp" 29 #include "gluPixelTransfer.hpp" 30 #include "gluShaderProgram.hpp" 31 #include "glw.h" 32 #include "glwEnums.hpp" 33 #include "glwFunctions.hpp" 34 #include "tcuRenderTarget.hpp" 35 #include "tcuSurface.hpp" 36 #include "tcuTestLog.hpp" 37 #include "tcuVector.hpp" 38 39 using tcu::TestLog; 40 using tcu::Vec4; 41 42 namespace deqp 43 { 44 namespace gles2 45 { 46 namespace Functional 47 { 48 49 class MultisampledRenderToTextureReadPixelsCase : public TestCase 50 { 51 public: 52 MultisampledRenderToTextureReadPixelsCase(Context& context, const char* name, const char* description); 53 ~MultisampledRenderToTextureReadPixelsCase(); 54 void init(); 55 IterateResult iterate(); 56 57 private: 58 MultisampledRenderToTextureReadPixelsCase(const MultisampledRenderToTextureReadPixelsCase& other); 59 MultisampledRenderToTextureReadPixelsCase& operator=(const MultisampledRenderToTextureReadPixelsCase& other); 60 }; 61 62 MultisampledRenderToTextureReadPixelsCase::MultisampledRenderToTextureReadPixelsCase(Context& context, const char* name, const char* description) 63 : TestCase(context, name, description) 64 { 65 } 66 67 MultisampledRenderToTextureReadPixelsCase::~MultisampledRenderToTextureReadPixelsCase() 68 { 69 } 70 71 void MultisampledRenderToTextureReadPixelsCase::init() 72 { 73 const glu::ContextInfo& contextInfo = m_context.getContextInfo(); 74 if (!contextInfo.isExtensionSupported("GL_EXT_multisampled_render_to_texture")) 75 { 76 TCU_THROW(NotSupportedError, "EXT_multisampled_render_to_texture is not supported"); 77 } 78 } 79 80 MultisampledRenderToTextureReadPixelsCase::IterateResult MultisampledRenderToTextureReadPixelsCase::iterate() 81 { 82 // Test for a bug where ReadPixels fails on multisampled textures. 83 // See http://crbug.com/890002 84 // Note that this does not test whether multisampling is working properly, 85 // only that ReadPixels is able to read from the texture. 86 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 87 // Create a framebuffer with a multisampled texture and a depth-stencil 88 // renderbuffer. 89 GLuint framebuffer = 0; 90 GLuint texture = 0; 91 gl.genFramebuffers(1, &framebuffer); 92 gl.genTextures(1, &texture); 93 gl.bindFramebuffer(GL_FRAMEBUFFER, framebuffer); 94 gl.bindTexture(GL_TEXTURE_2D, texture); 95 gl.texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); 96 GLint max_samples = 0; 97 gl.getIntegerv(GL_MAX_SAMPLES_EXT, &max_samples); 98 gl.framebufferTexture2DMultisampleEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0, max_samples); 99 GLuint depthStencil = 0; 100 gl.genRenderbuffers(1, &depthStencil); 101 gl.bindRenderbuffer(GL_RENDERBUFFER, depthStencil); 102 gl.renderbufferStorageMultisampleEXT(GL_RENDERBUFFER, max_samples, GL_DEPTH24_STENCIL8, 1, 1); 103 gl.framebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthStencil); 104 gl.framebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, depthStencil); 105 if (gl.checkFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) { 106 TCU_THROW(NotSupportedError, "Framebuffer format not supported."); 107 } 108 gl.clearColor(1, 0, 1, 0); 109 gl.clear(GL_COLOR_BUFFER_BIT); 110 GLU_EXPECT_NO_ERROR(gl.getError(), "init"); 111 112 // ReadPixels should implicitly resolve the multisampled buffer. 113 GLubyte pixel[4] = { 0, 1, 0, 1 }; 114 gl.readPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixel); 115 GLU_EXPECT_NO_ERROR(gl.getError(), "ReadPixels"); 116 117 if (pixel[0] != 255 || pixel[1] != 0 || pixel[2] != 255 || pixel[3] != 0) 118 { 119 std::ostringstream msg; 120 msg << "ReadPixels read incorrect values: [" << (int)pixel[0] << ", " << (int)pixel[1] << ", " << (int)pixel[2] << ", " << (int)pixel[3] << "]"; 121 m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, msg.str().c_str()); 122 } 123 else 124 { 125 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass"); 126 } 127 128 gl.bindFramebuffer(GL_FRAMEBUFFER, 0); 129 gl.bindTexture(GL_TEXTURE_2D, 0); 130 gl.bindRenderbuffer(GL_RENDERBUFFER, 0); 131 gl.deleteFramebuffers(1, &framebuffer); 132 gl.deleteRenderbuffers(1, &depthStencil); 133 gl.deleteTextures(1, &texture); 134 return STOP; 135 } 136 137 MultisampledRenderToTextureTests::MultisampledRenderToTextureTests(Context& context) : TestCaseGroup(context, "multisampled_render_to_texture", "EXT_multisampled_render_to_texture tests") 138 { 139 } 140 141 MultisampledRenderToTextureTests::~MultisampledRenderToTextureTests() 142 { 143 } 144 145 void MultisampledRenderToTextureTests::init() 146 { 147 addChild(new MultisampledRenderToTextureReadPixelsCase(m_context, "readpixels", "Test ReadPixels with EXT_multisampled_render_to_texture")); 148 } 149 150 } // namespace Functional 151 } // namespace gles2 152 } // namespace deqp 153
