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

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• Hash : bf5e9dbc
  Author :
  Date : 2023-03-09T00:00:00
  

  GL: Reset clip origin before scissored clears
  
  Clip origin must not affect scissor box but
  some drivers flip it for clear operations.
  
  Added capture/replay support for ClipControl.
  
  Bug: angleproject:8066
  Change-Id: I9292cb4945b49c56c80da4c5813e89df3453b6b6
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4328267
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Alexey Knyazev <lexa.knyazev@gmail.com>
  

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• src/tests/gl_tests/ClipControlTest.cpp

• //
  // Copyright 2023 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.
  //
  // Test cases for GL_EXT_clip_control
  // These tests complement dEQP-GLES2.functional.clip_control.*
  //
  
  #include "test_utils/ANGLETest.h"
  #include "test_utils/gl_raii.h"
  #include "util/EGLWindow.h"
  #include "util/test_utils.h"
  
  using namespace angle;
  
  class ClipControlTest : public ANGLETest<>
  {
    protected:
      static const int w = 64;
      static const int h = 64;
  
      ClipControlTest()
      {
          setWindowWidth(w);
          setWindowHeight(h);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
          setConfigDepthBits(24);
          setExtensionsEnabled(false);
      }
  };
  
  // Test state queries and updates
  TEST_P(ClipControlTest, StateQuery)
  {
      // Queries with the extension disabled
      GLint clipOrigin = -1;
      glGetIntegerv(GL_CLIP_ORIGIN_EXT, &clipOrigin);
      EXPECT_EQ(clipOrigin, -1);
      EXPECT_GL_ERROR(GL_INVALID_ENUM);
      GLint clipDepthMode = -1;
      glGetIntegerv(GL_CLIP_DEPTH_MODE_EXT, &clipDepthMode);
      EXPECT_EQ(clipDepthMode, -1);
      EXPECT_GL_ERROR(GL_INVALID_ENUM);
  
      // Command with the extension disabled
      glClipControlEXT(GL_UPPER_LEFT_EXT, GL_ZERO_TO_ONE_EXT);
      EXPECT_GL_ERROR(GL_INVALID_OPERATION);
  
      ANGLE_SKIP_TEST_IF(!EnsureGLExtensionEnabled("GL_EXT_clip_control"));
      ASSERT_GL_NO_ERROR();
  
      // Default state with the extension enabled
      glGetIntegerv(GL_CLIP_ORIGIN_EXT, &clipOrigin);
      glGetIntegerv(GL_CLIP_DEPTH_MODE_EXT, &clipDepthMode);
      EXPECT_GLENUM_EQ(GL_LOWER_LEFT_EXT, clipOrigin);
      EXPECT_GLENUM_EQ(GL_NEGATIVE_ONE_TO_ONE_EXT, clipDepthMode);
  
      ASSERT_GL_NO_ERROR();
  
      // Check valid state updates
      glClipControlEXT(GL_LOWER_LEFT_EXT, GL_NEGATIVE_ONE_TO_ONE_EXT);
      glGetIntegerv(GL_CLIP_ORIGIN_EXT, &clipOrigin);
      glGetIntegerv(GL_CLIP_DEPTH_MODE_EXT, &clipDepthMode);
      EXPECT_GLENUM_EQ(GL_LOWER_LEFT_EXT, clipOrigin);
      EXPECT_GLENUM_EQ(GL_NEGATIVE_ONE_TO_ONE_EXT, clipDepthMode);
  
      glClipControlEXT(GL_LOWER_LEFT_EXT, GL_ZERO_TO_ONE_EXT);
      glGetIntegerv(GL_CLIP_ORIGIN_EXT, &clipOrigin);
      glGetIntegerv(GL_CLIP_DEPTH_MODE_EXT, &clipDepthMode);
      EXPECT_GLENUM_EQ(GL_LOWER_LEFT_EXT, clipOrigin);
      EXPECT_GLENUM_EQ(GL_ZERO_TO_ONE_EXT, clipDepthMode);
  
      glClipControlEXT(GL_UPPER_LEFT_EXT, GL_NEGATIVE_ONE_TO_ONE_EXT);
      glGetIntegerv(GL_CLIP_ORIGIN_EXT, &clipOrigin);
      glGetIntegerv(GL_CLIP_DEPTH_MODE_EXT, &clipDepthMode);
      EXPECT_GLENUM_EQ(GL_UPPER_LEFT_EXT, clipOrigin);
      EXPECT_GLENUM_EQ(GL_NEGATIVE_ONE_TO_ONE_EXT, clipDepthMode);
  
      glClipControlEXT(GL_UPPER_LEFT_EXT, GL_ZERO_TO_ONE_EXT);
      glGetIntegerv(GL_CLIP_ORIGIN_EXT, &clipOrigin);
      glGetIntegerv(GL_CLIP_DEPTH_MODE_EXT, &clipDepthMode);
      EXPECT_GLENUM_EQ(GL_UPPER_LEFT_EXT, clipOrigin);
      EXPECT_GLENUM_EQ(GL_ZERO_TO_ONE_EXT, clipDepthMode);
  
      ASSERT_GL_NO_ERROR();
  
      // Check invalid state updates
      glClipControlEXT(GL_LOWER_LEFT_EXT, 0);
      EXPECT_GL_ERROR(GL_INVALID_ENUM);
      glClipControlEXT(0, GL_NEGATIVE_ONE_TO_ONE_EXT);
      EXPECT_GL_ERROR(GL_INVALID_ENUM);
  
      // Invalid command does not change the state
      glGetIntegerv(GL_CLIP_ORIGIN_EXT, &clipOrigin);
      glGetIntegerv(GL_CLIP_DEPTH_MODE_EXT, &clipDepthMode);
      EXPECT_GLENUM_EQ(GL_UPPER_LEFT_EXT, clipOrigin);
      EXPECT_GLENUM_EQ(GL_ZERO_TO_ONE_EXT, clipDepthMode);
  
      ASSERT_GL_NO_ERROR();
  }
  
  // Test that clip origin does not affect scissored clears
  TEST_P(ClipControlTest, OriginScissorClear)
  {
      ANGLE_SKIP_TEST_IF(!EnsureGLExtensionEnabled("GL_EXT_clip_control"));
  
      ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), essl1_shaders::fs::Blue());
  
      auto test = [&](std::string name, bool useES3) {
          // Start with lower-left
          glClipControlEXT(GL_LOWER_LEFT_EXT, GL_NEGATIVE_ONE_TO_ONE_EXT);
  
          // Make a draw call without color writes to sync the state
          glColorMask(false, false, false, false);
          drawQuad(program, essl1_shaders::PositionAttrib(), 0.0);
          glColorMask(true, true, true, true);
  
          // Clear to red
          glDisable(GL_SCISSOR_TEST);
          if (useES3)
          {
              float color[4] = {1.0, 0.0, 0.0, 1.0};
              glClearBufferfv(GL_COLOR, 0, color);
          }
          else
          {
              glClearColor(1.0, 0.0, 0.0, 1.0);
              glClear(GL_COLOR_BUFFER_BIT);
          }
  
          // Flip the clip origin
          glClipControlEXT(GL_UPPER_LEFT_EXT, GL_NEGATIVE_ONE_TO_ONE_EXT);
  
          // Make a draw call without color writes to sync the state
          glColorMask(false, false, false, false);
          drawQuad(program, essl1_shaders::PositionAttrib(), 0.0);
          glColorMask(true, true, true, true);
  
          // Clear lower half to green
          glEnable(GL_SCISSOR_TEST);
          glScissor(0, 0, w, h / 2);
          if (useES3)
          {
              float color[4] = {0.0, 1.0, 0.0, 1.0};
              glClearBufferfv(GL_COLOR, 0, color);
          }
          else
          {
              glClearColor(0.0, 1.0, 0.0, 1.0);
              glClear(GL_COLOR_BUFFER_BIT);
          }
          ASSERT_GL_NO_ERROR();
  
          EXPECT_PIXEL_COLOR_EQ(0.5 * w, 0.25 * h, GLColor::green) << name;
          EXPECT_PIXEL_COLOR_EQ(0.5 * w, 0.75 * h, GLColor::red) << name;
      };
  
      test("Default framebuffer", getClientMajorVersion() > 2);
  
      ANGLE_SKIP_TEST_IF(!EnsureGLExtensionEnabled("GL_OES_rgb8_rgba8"));
  
      GLRenderbuffer rb;
      glBindRenderbuffer(GL_RENDERBUFFER, rb);
      glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, w, h);
  
      GLFramebuffer fb;
      glBindFramebuffer(GL_FRAMEBUFFER, fb);
      glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rb);
      ASSERT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
  
      test("User framebuffer", getClientMajorVersion() > 2);
  }
  
  ANGLE_INSTANTIATE_TEST_ES2_AND_ES3(ClipControlTest);
  

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