kc3-lang/angle/src/libANGLE/ImageIndexIterator_unittest.cpp

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• Hash : cc129377
  Author :
  Date : 2018-04-12T09:13:18
  

  ImageIndex: Consolidate layer/cube face.
  
  In terms of the Texture or Image resource, a cube face
  refers to a layer of a 2D texture. This layer has a special
  meaning for cube textures, but it is represented as a layer
  with a layer index. Cube array textures are no different,
  they just use a different indexing scheme for the array
  layers.
  
  This also cleans up the ImageIndex helper to have a class
  structure with private data, and cleans up a few cases to
  use generic Make functions and iterators where they were
  setting properties of the index directly.
  
  This will make it easier to have ImageIndexes address
  entire levels of a Cube map in the future, and makes the
  layer count logic in Vulkan cleaner.
  
  Bug: angleproject:2318
  Change-Id: Iea9842e233f974a9896282ca224cb001f7882bd1
  Reviewed-on: https://chromium-review.googlesource.com/987525
  Reviewed-by: Luc Ferron <lucferron@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/ImageIndexIterator_unittest.cpp

• //
  // Copyright (c) 2014 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 "gmock/gmock.h"
  #include "gtest/gtest.h"
  
  #include "common/utilities.h"
  #include "libANGLE/ImageIndex.h"
  
  using namespace gl;
  
  namespace
  {
  
  static const GLint minMip = 0;
  static const GLint maxMip = 4;
  static const GLint minLayer = 1;
  static const GLint maxLayer = 3;
  
  TEST(ImageIndexTest, Iterator2D)
  {
      ImageIndexIterator iter = ImageIndexIterator::Make2D(minMip, maxMip);
  
      ASSERT_GE(0, minMip);
  
      for (GLint mip = minMip; mip < maxMip; mip++)
      {
          EXPECT_TRUE(iter.hasNext());
          ImageIndex current = iter.current();
          ImageIndex nextIndex = iter.next();
  
          EXPECT_EQ(TextureType::_2D, nextIndex.getType());
          EXPECT_EQ(TextureTarget::_2D, nextIndex.getTarget());
          EXPECT_EQ(mip, nextIndex.getLevelIndex());
          EXPECT_FALSE(nextIndex.hasLayer());
          EXPECT_FALSE(nextIndex.has3DLayer());
  
          // Also test current
          EXPECT_EQ(current.getType(), nextIndex.getType());
          EXPECT_EQ(current.getLevelIndex(), nextIndex.getLevelIndex());
          EXPECT_EQ(current.getLayerIndex(), nextIndex.getLayerIndex());
      }
  
      EXPECT_FALSE(iter.hasNext());
  }
  
  TEST(ImageIndexTest, IteratorCube)
  {
      ImageIndexIterator iter = ImageIndexIterator::MakeCube(minMip, maxMip);
  
      ASSERT_GE(0, minMip);
  
      for (GLint mip = minMip; mip < maxMip; mip++)
      {
          for (TextureTarget target : AllCubeFaceTextureTargets())
          {
              EXPECT_TRUE(iter.hasNext());
              ImageIndex nextIndex = iter.next();
  
              EXPECT_EQ(TextureType::CubeMap, nextIndex.getType());
              EXPECT_EQ(target, nextIndex.getTarget());
              EXPECT_EQ(mip, nextIndex.getLevelIndex());
              EXPECT_TRUE(nextIndex.hasLayer());
              EXPECT_FALSE(nextIndex.has3DLayer());
          }
      }
  
      EXPECT_FALSE(iter.hasNext());
  }
  
  TEST(ImageIndexTest, Iterator3D)
  {
      ImageIndexIterator iter = ImageIndexIterator::Make3D(minMip, maxMip, minLayer, maxLayer);
  
      ASSERT_GE(0, minMip);
  
      for (GLint mip = minMip; mip < maxMip; mip++)
      {
          for (GLint layer = minLayer; layer < maxLayer; layer++)
          {
              EXPECT_TRUE(iter.hasNext());
              ImageIndex nextIndex = iter.next();
  
              EXPECT_EQ(TextureType::_3D, nextIndex.getType());
              EXPECT_EQ(TextureTarget::_3D, nextIndex.getTarget());
              EXPECT_EQ(mip, nextIndex.getLevelIndex());
              EXPECT_EQ(layer, nextIndex.getLayerIndex());
              EXPECT_TRUE(nextIndex.hasLayer());
              EXPECT_TRUE(nextIndex.has3DLayer());
          }
      }
  
      EXPECT_FALSE(iter.hasNext());
  }
  
  TEST(ImageIndexTest, Iterator2DArray)
  {
      GLsizei layerCounts[] = { 1, 3, 5, 2 };
  
      ImageIndexIterator iter = ImageIndexIterator::Make2DArray(minMip, maxMip, layerCounts);
  
      ASSERT_GE(0, minMip);
      ASSERT_EQ(ArraySize(layerCounts), static_cast<size_t>(maxMip));
  
      for (GLint mip = minMip; mip < maxMip; mip++)
      {
          for (GLint layer = 0; layer < layerCounts[mip]; layer++)
          {
              EXPECT_TRUE(iter.hasNext());
              ImageIndex nextIndex = iter.next();
  
              EXPECT_EQ(TextureType::_2DArray, nextIndex.getType());
              EXPECT_EQ(TextureTarget::_2DArray, nextIndex.getTarget());
              EXPECT_EQ(mip, nextIndex.getLevelIndex());
              EXPECT_EQ(layer, nextIndex.getLayerIndex());
              EXPECT_TRUE(nextIndex.hasLayer());
              EXPECT_TRUE(nextIndex.has3DLayer());
          }
      }
  
      EXPECT_FALSE(iter.hasNext());
  }
  
  TEST(ImageIndexTest, LayerIterator2DArray)
  {
      GLsizei layerCounts[] = {1, 3, 5, 2};
  
      ASSERT_GE(0, minMip);
      ASSERT_EQ(ArraySize(layerCounts), static_cast<size_t>(maxMip));
  
      for (GLint mip = minMip; mip < maxMip; mip++)
      {
          // Make a layer iterator.
          ImageIndex mipImageIndex = ImageIndex::Make2DArray(mip, ImageIndex::kEntireLevel);
          ImageIndexIterator iter  = mipImageIndex.getLayerIterator(layerCounts[mip]);
  
          for (GLint layer = 0; layer < layerCounts[mip]; layer++)
          {
              EXPECT_TRUE(iter.hasNext());
              ImageIndex nextIndex = iter.next();
  
              EXPECT_EQ(TextureType::_2DArray, nextIndex.getType());
              EXPECT_EQ(TextureTarget::_2DArray, nextIndex.getTarget());
              EXPECT_EQ(mip, nextIndex.getLevelIndex());
              EXPECT_EQ(layer, nextIndex.getLayerIndex());
              EXPECT_TRUE(nextIndex.hasLayer());
              EXPECT_TRUE(nextIndex.has3DLayer());
              EXPECT_LT(nextIndex.getLayerIndex(), layerCounts[mip]);
          }
  
          EXPECT_FALSE(iter.hasNext());
      }
  }
  
  } // namespace
  

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