kc3-lang/angle/src/tests/gl_tests/OcclusionQueriesTest.cpp

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• Author : Yuly Novikov
  Date : 2021-03-02 19:04:57
  Hash : a6b16d29
  Message : Suppress UNINSTANTIATED_PARAMETERIZED_TEST failures on Ozone We only support ES2 on Ozone, so tests that depend on ES3 or ES31 support are not instantiated there. Bug: chromium:1183147 Change-Id: Id58bcd9b44a5b9a70b5ae8115e27c44f5dc81226 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2726550 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>

• src/tests/gl_tests/OcclusionQueriesTest.cpp

• //
  // 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"
  #include "util/EGLWindow.h"
  #include "util/random_utils.h"
  #include "util/test_utils.h"
  
  using namespace angle;
  
  class OcclusionQueriesTest : public ANGLETest
  {
    protected:
      OcclusionQueriesTest() : mProgram(0), mRNG(1)
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
          setConfigDepthBits(24);
      }
  
      void testSetUp() override
      {
          mProgram = CompileProgram(essl1_shaders::vs::Simple(), essl1_shaders::fs::Red());
          ASSERT_NE(0u, mProgram);
      }
  
      void testTearDown() override { glDeleteProgram(mProgram); }
  
      GLuint mProgram;
      RNG mRNG;
  };
  
  class OcclusionQueriesTestES3 : public OcclusionQueriesTest
  {};
  
  TEST_P(OcclusionQueriesTest, IsOccluded)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      // http://anglebug.com/5400
      ANGLE_SKIP_TEST_IF(IsOSX() && IsMetal());
  
      glDepthMask(GL_TRUE);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      // draw a quad at depth 0.3
      glEnable(GL_DEPTH_TEST);
      glUseProgram(mProgram);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.3f);
      glUseProgram(0);
  
      EXPECT_GL_NO_ERROR();
  
      GLQueryEXT query;
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(),
               0.8f);  // this quad should be occluded by first quad
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      GLuint ready = GL_FALSE;
      while (ready == GL_FALSE)
      {
          angle::Sleep(0);
          glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_AVAILABLE_EXT, &ready);
      }
  
      GLuint result = GL_TRUE;
      glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT, &result);
  
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_FALSE(result);
  }
  
  TEST_P(OcclusionQueriesTest, IsNotOccluded)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      // TODO(syoussefi): Using render pass ops to clear the framebuffer attachment results in
      // AMD/Windows misbehaving in this test.  http://anglebug.com/3286
      ANGLE_SKIP_TEST_IF(IsWindows() && IsAMD() && IsVulkan());
  
      // http://anglebug.com/5400
      ANGLE_SKIP_TEST_IF(IsOSX() && IsMetal());
  
      glDepthMask(GL_TRUE);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      EXPECT_GL_NO_ERROR();
  
      GLQueryEXT query;
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f);  // this quad should not be occluded
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      GLuint result = GL_TRUE;
      glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT, &result);  // will block waiting for result
  
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_TRUE(result);
  }
  
  // Test that glClear should not be counted by occlusion query.
  TEST_P(OcclusionQueriesTest, ClearNotCounted)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      // TODO(syoussefi): Using render pass ops to clear the framebuffer attachment results in
      // AMD/Windows misbehaving in this test.  http://anglebug.com/3286
      ANGLE_SKIP_TEST_IF(IsWindows() && IsAMD() && IsVulkan());
  
      // http://anglebug.com/4925
      ANGLE_SKIP_TEST_IF(IsD3D11());
  
      // http://anglebug.com/5307
      ANGLE_SKIP_TEST_IF(IsMetal() && IsNVIDIA());
  
      glDepthMask(GL_TRUE);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      EXPECT_GL_NO_ERROR();
  
      GLQueryEXT query[2];
  
      // First query
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[0]);
      // Full screen clear
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      // View port clear
      glViewport(0, 0, getWindowWidth() / 2, getWindowHeight());
      glScissor(0, 0, getWindowWidth() / 2, getWindowHeight());
      glEnable(GL_SCISSOR_TEST);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      EXPECT_GL_NO_ERROR();
  
      // Second query
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[1]);
  
      // View port clear
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      // View port clear
      glViewport(0, 0, getWindowWidth() / 2, getWindowHeight());
      glScissor(0, 0, getWindowWidth() / 2, getWindowHeight());
      glEnable(GL_SCISSOR_TEST);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      // this quad should not be occluded
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f, 0.5f);
  
      // Clear again
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      // this quad should not be occluded
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f, 1.0);
  
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      GLuint result[2] = {GL_TRUE, GL_TRUE};
      glGetQueryObjectuivEXT(query[0], GL_QUERY_RESULT_EXT,
                             &result[0]);  // will block waiting for result
      glGetQueryObjectuivEXT(query[1], GL_QUERY_RESULT_EXT,
                             &result[1]);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_FALSE(result[0]);
      EXPECT_GL_TRUE(result[1]);
  }
  
  // Test that masked glClear should not be counted by occlusion query.
  TEST_P(OcclusionQueriesTest, MaskedClearNotCounted)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      // http://anglebug.com/4925
      ANGLE_SKIP_TEST_IF(IsD3D());
  
      GLQueryEXT query;
  
      // Masked clear
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
      glColorMask(GL_TRUE, GL_FALSE, GL_TRUE, GL_TRUE);
      glClear(GL_COLOR_BUFFER_BIT);
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      GLuint result = GL_TRUE;
      glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_FALSE(result);
  }
  
  // Test that copies should not be counted by occlusion query.
  TEST_P(OcclusionQueriesTest, CopyNotCounted)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      // http://anglebug.com/4925
      ANGLE_SKIP_TEST_IF(IsD3D());
  
      // http://anglebug.com/5100
      ANGLE_SKIP_TEST_IF(IsMetal() && IsNVIDIA());
  
      GLQueryEXT query;
  
      // Unrelated draw before the query starts.
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f, 0.5f);
  
      // Copy to a texture with a different format from backbuffer
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
      GLTexture tex;
      glBindTexture(GL_TEXTURE_2D, tex);
      glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 0, 0, getWindowWidth(), getWindowHeight(), 0);
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      GLuint result = GL_TRUE;
      glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_FALSE(result);
  }
  
  // Test that blit should not be counted by occlusion query.
  TEST_P(OcclusionQueriesTestES3, BlitNotCounted)
  {
      // http://anglebug.com/4925
      ANGLE_SKIP_TEST_IF(IsD3D11());
  
      // http://anglebug.com/5101
      ANGLE_SKIP_TEST_IF(IsWindows() && IsAMD() && IsVulkan());
  
      // http://anglebug.com/5443
      ANGLE_SKIP_TEST_IF(IsOSX() && IsMetal() && IsNVIDIA());
  
      constexpr GLuint kSize = 64;
  
      GLFramebuffer srcFbo;
      glBindFramebuffer(GL_FRAMEBUFFER, srcFbo);
  
      GLTexture srcTex;
      glBindTexture(GL_TEXTURE_2D, srcTex);
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kSize, kSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
      glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, srcTex, 0);
  
      GLFramebuffer dstFbo;
      glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dstFbo);
  
      GLTexture dstTex;
      glBindTexture(GL_TEXTURE_2D, dstTex);
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, kSize, kSize, 0, GL_RGB, GL_UNSIGNED_BYTE, nullptr);
      glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, dstTex, 0);
  
      GLQueryEXT query;
  
      // Unrelated draw before the query starts.
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f, 0.5f);
  
      // Blit flipped and with different formats.
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
      glBlitFramebuffer(0, 0, 64, 64, 64, 64, 0, 0, GL_COLOR_BUFFER_BIT, GL_LINEAR);
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      GLuint result = GL_TRUE;
      glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_FALSE(result);
  }
  
  // Test that multisampled-render-to-texture unresolve should not be counted by occlusion query.
  TEST_P(OcclusionQueriesTestES3, UnresolveNotCounted)
  {
      ANGLE_SKIP_TEST_IF(!EnsureGLExtensionEnabled("GL_EXT_multisampled_render_to_texture"));
  
      // http://anglebug.com/5086
      ANGLE_SKIP_TEST_IF(IsLinux() && IsIntel() && IsVulkan());
  
      constexpr GLuint kSize = 64;
  
      GLFramebuffer fboMS;
      glBindFramebuffer(GL_FRAMEBUFFER, fboMS);
  
      // Create multisampled framebuffer to draw into
      GLTexture textureMS;
      glBindTexture(GL_TEXTURE_2D, textureMS);
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kSize, kSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
      glFramebufferTexture2DMultisampleEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
                                           textureMS, 0, 4);
  
      GLRenderbuffer depthMS;
      glBindRenderbuffer(GL_RENDERBUFFER, depthMS);
      glRenderbufferStorageMultisample(GL_RENDERBUFFER, 4, GL_DEPTH_COMPONENT16, kSize, kSize);
      glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthMS);
  
      EXPECT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
  
      // Draw red into the multisampled color buffer.
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.5f);
      ASSERT_GL_NO_ERROR();
  
      // Create a texture and copy into it, forcing a resolve of the color buffer.
      GLTexture texture;
      glBindTexture(GL_TEXTURE_2D, texture);
      glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, kSize, kSize, 0);
  
      GLQueryEXT query;
  
      // Make a draw call that will fail the depth test, and therefore shouldn't contribute to
      // occlusion query.
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
      glEnable(GL_DEPTH_TEST);
      glDepthFunc(GL_NEVER);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f, 0.5f);
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      GLuint result = GL_TRUE;
      glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_FALSE(result);
  }
  
  // Test that changing framebuffers work
  TEST_P(OcclusionQueriesTest, FramebufferBindingChange)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      constexpr GLsizei kSize = 4;
  
      // Create two framebuffers, and make sure they are synced.
      GLFramebuffer fbo[2];
      GLTexture color[2];
  
      for (size_t index = 0; index < 2; ++index)
      {
          glBindTexture(GL_TEXTURE_2D, color[index]);
          glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kSize, kSize, 0, GL_RGBA, GL_UNSIGNED_BYTE,
                       nullptr);
  
          glBindFramebuffer(GL_FRAMEBUFFER, fbo[index]);
          glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, color[index],
                                 0);
  
          glClearColor(0, index, 1 - index, 1);
          glClear(GL_COLOR_BUFFER_BIT);
  
          EXPECT_PIXEL_COLOR_EQ(0, 0, index ? GLColor::green : GLColor::blue);
      }
      EXPECT_GL_NO_ERROR();
  
      glViewport(0, 0, kSize, kSize);
  
      // Start an occlusion query and issue a draw call to each framebuffer.
      GLQueryEXT query;
  
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
  
      for (size_t index = 0; index < 2; ++index)
      {
          glBindFramebuffer(GL_FRAMEBUFFER, fbo[index]);
          drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.5f);
      }
  
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      EXPECT_GL_NO_ERROR();
  
      GLuint result = GL_FALSE;
      glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT, &result);
      EXPECT_GL_NO_ERROR();
  
      EXPECT_GL_TRUE(result);
  }
  
  // Test multiple occlusion queries.
  TEST_P(OcclusionQueriesTest, MultiQueries)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      // TODO(syoussefi): Using render pass ops to clear the framebuffer attachment results in
      // AMD/Windows misbehaving in this test.  http://anglebug.com/3286
      ANGLE_SKIP_TEST_IF(IsWindows() && IsAMD() && IsVulkan());
  
      // http://anglebug.com/4925
      ANGLE_SKIP_TEST_IF(IsOpenGL() || IsD3D11());
  
      // http://anglebug.com/4925
      // http://anglebug.com/5400
      ANGLE_SKIP_TEST_IF(IsOSX() && IsMetal());
  
      // TODO(anglebug.com/5360): Failing on ARM-based Apple DTKs.
      ANGLE_SKIP_TEST_IF(IsOSX() && IsARM64() && IsDesktopOpenGL());
      ANGLE_SKIP_TEST_IF(IsOSX() && IsARM64() && IsMetal());
  
      GLQueryEXT query[5];
  
      // First query
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[0]);
  
      EXPECT_GL_NO_ERROR();
  
      glEnable(GL_DEPTH_TEST);
      glDepthMask(GL_TRUE);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      EXPECT_GL_NO_ERROR();
  
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f);  // this quad should not be occluded
  
      EXPECT_GL_NO_ERROR();
  
      // Due to implementation might skip in-renderpass flush, we are using glFinish here to force a
      // flush. A flush shound't clear the query result.
      glFinish();
  
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), -2, 0.25f);  // this quad should be occluded
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      // First query ends
  
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f,
               0.25f);  // this quad should not be occluded
  
      // Second query
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[1]);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.9f,
               0.25f);  // this quad should be occluded
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      // Third query
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[2]);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.9f,
               0.5f);  // this quad should not be occluded
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      // ------------
      glFinish();
  
      glViewport(0, 0, getWindowWidth() / 2, getWindowHeight());
      glScissor(0, 0, getWindowWidth() / 2, getWindowHeight());
      glEnable(GL_SCISSOR_TEST);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.9f,
               0.5f);  // this quad should not be occluded
  
      // Fourth query: begin query then end then begin again
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[3]);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.9f,
               1);  // this quad should not be occluded
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[3]);
      EXPECT_GL_NO_ERROR();
      // glClear should not be counted toward query);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      // Fifth query spans across frames
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query[4]);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f,
               0.25f);  // this quad should not be occluded
  
      swapBuffers();
  
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.9f,
               0.5f);  // this quad should not be occluded
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      GLuint result = GL_TRUE;
      glGetQueryObjectuivEXT(query[0], GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
      EXPECT_GL_TRUE(result);
  
      glGetQueryObjectuivEXT(query[1], GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
      EXPECT_GL_FALSE(result);
  
      glGetQueryObjectuivEXT(query[2], GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
      EXPECT_GL_TRUE(result);
  
      glGetQueryObjectuivEXT(query[3], GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
      EXPECT_GL_FALSE(result);
  
      glGetQueryObjectuivEXT(query[4], GL_QUERY_RESULT_EXT,
                             &result);  // will block waiting for result
      EXPECT_GL_NO_ERROR();
      EXPECT_GL_TRUE(result);
  }
  
  TEST_P(OcclusionQueriesTest, Errors)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      glDepthMask(GL_TRUE);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      EXPECT_GL_NO_ERROR();
  
      GLuint query  = 0;
      GLuint query2 = 0;
      glGenQueriesEXT(1, &query);
  
      EXPECT_GL_FALSE(glIsQueryEXT(query));
      EXPECT_GL_FALSE(glIsQueryEXT(query2));
  
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, 0);  // can't pass 0 as query id
      EXPECT_GL_ERROR(GL_INVALID_OPERATION);
  
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT,
                      query2);  // can't initiate a query while one's already active
      EXPECT_GL_ERROR(GL_INVALID_OPERATION);
  
      EXPECT_GL_TRUE(glIsQueryEXT(query));
      EXPECT_GL_FALSE(glIsQueryEXT(query2));  // have not called begin
  
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.8f);  // this quad should not be occluded
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT);      // no active query for this target
      EXPECT_GL_ERROR(GL_INVALID_OPERATION);
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT,
                      query);  // can't begin a query as a different type than previously used
      EXPECT_GL_ERROR(GL_INVALID_OPERATION);
  
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT,
                      query2);  // have to call genqueries first
      EXPECT_GL_ERROR(GL_INVALID_OPERATION);
  
      glGenQueriesEXT(1, &query2);
      glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, query2);  // should be ok now
      EXPECT_GL_TRUE(glIsQueryEXT(query2));
  
      drawQuad(mProgram, essl1_shaders::PositionAttrib(),
               0.3f);                  // this should draw in front of other quad
      glDeleteQueriesEXT(1, &query2);  // should delete when query becomes inactive
      glEndQueryEXT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT);  // should not incur error; should delete
                                                              // query + 1 at end of execution.
      EXPECT_GL_NO_ERROR();
  
      swapBuffers();
  
      EXPECT_GL_NO_ERROR();
  
      GLuint ready = GL_FALSE;
      glGetQueryObjectuivEXT(query2, GL_QUERY_RESULT_AVAILABLE_EXT,
                             &ready);  // this query is now deleted
      EXPECT_GL_ERROR(GL_INVALID_OPERATION);
  
      EXPECT_GL_NO_ERROR();
  }
  
  // Test that running multiple simultaneous queries from multiple EGL contexts returns the correct
  // result for each query.  Helps expose bugs in ANGLE's virtual contexts.
  TEST_P(OcclusionQueriesTest, MultiContext)
  {
      ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 &&
                         !IsGLExtensionEnabled("GL_EXT_occlusion_query_boolean"));
  
      // TODO(cwallez@chromium.org): Suppression for http://anglebug.com/3080
      ANGLE_SKIP_TEST_IF(IsWindows() && IsNVIDIA() && IsVulkan());
  
      // Test skipped because the D3D backends cannot support simultaneous queries on multiple
      // contexts yet.
      ANGLE_SKIP_TEST_IF(GetParam() == ES2_D3D9() || GetParam() == ES2_D3D11() ||
                         GetParam() == ES3_D3D11());
  
      // http://anglebug.com/5400
      ANGLE_SKIP_TEST_IF(IsOSX() && IsMetal());
  
      glDepthMask(GL_TRUE);
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  
      // draw a quad at depth 0.5
      glEnable(GL_DEPTH_TEST);
      drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.5f);
  
      EGLWindow *window = getEGLWindow();
  
      EGLDisplay display = window->getDisplay();
      EGLConfig config   = window->getConfig();
      EGLSurface surface = window->getSurface();
  
      EGLint contextAttributes[] = {
          EGL_CONTEXT_MAJOR_VERSION_KHR,
          GetParam().majorVersion,
          EGL_CONTEXT_MINOR_VERSION_KHR,
          GetParam().minorVersion,
          EGL_NONE,
      };
  
      const size_t passCount = 5;
      struct ContextInfo
      {
          EGLContext context;
          GLuint program;
          GLuint query;
          bool visiblePasses[passCount];
          bool shouldPass;
      };
  
      ContextInfo contexts[] = {
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {false, false, false, false, false},
              false,
          },
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {false, true, false, true, false},
              true,
          },
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {false, false, false, false, false},
              false,
          },
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {true, true, false, true, true},
              true,
          },
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {false, true, true, true, true},
              true,
          },
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {true, false, false, true, false},
              true,
          },
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {false, false, false, false, false},
              false,
          },
          {
              EGL_NO_CONTEXT,
              0,
              0,
              {false, false, false, false, false},
              false,
          },
      };
  
      for (auto &context : contexts)
      {
          context.context = eglCreateContext(display, config, EGL_NO_CONTEXT, contextAttributes);
          ASSERT_NE(context.context, EGL_NO_CONTEXT);
  
          eglMakeCurrent(display, surface, surface, context.context);
  
          context.program = CompileProgram(essl1_shaders::vs::Simple(), essl1_shaders::fs::Red());
          ASSERT_NE(context.program, 0u);
  
          glDepthMask(GL_FALSE);
          glEnable(GL_DEPTH_TEST);
  
          glGenQueriesEXT(1, &context.query);
          glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, context.query);
  
          ASSERT_GL_NO_ERROR();
      }
  
      for (size_t pass = 0; pass < passCount; pass++)
      {
          for (const auto &context : contexts)
          {
              eglMakeCurrent(display, surface, surface, context.context);
  
              float depth = context.visiblePasses[pass] ? mRNG.randomFloatBetween(0.0f, 0.4f)
                                                        : mRNG.randomFloatBetween(0.6f, 1.0f);
              drawQuad(context.program, essl1_shaders::PositionAttrib(), depth);
  
              EXPECT_GL_NO_ERROR();
          }
      }
  
      for (const auto &context : contexts)
      {
          eglMakeCurrent(display, surface, surface, context.context);
          glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
  
          GLuint result = GL_TRUE;
          glGetQueryObjectuivEXT(context.query, GL_QUERY_RESULT_EXT, &result);
  
          EXPECT_GL_NO_ERROR();
  
          GLuint expectation = context.shouldPass ? GL_TRUE : GL_FALSE;
          EXPECT_EQ(expectation, result);
      }
  
      eglMakeCurrent(display, surface, surface, window->getContext());
  
      for (auto &context : contexts)
      {
          eglDestroyContext(display, context.context);
          context.context = EGL_NO_CONTEXT;
      }
  }
  
  ANGLE_INSTANTIATE_TEST_ES2_AND_ES3(OcclusionQueriesTest);
  
  GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(OcclusionQueriesTestES3);
  ANGLE_INSTANTIATE_TEST_ES3(OcclusionQueriesTestES3);