kc3-lang/angle/src/libANGLE/renderer/vulkan/OverlayVk.cpp

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• Hash : 038adcae
  Author :
  Date : 2022-02-08T16:46:40
  

  Vulkan: Render the overlay in the graphics pipeline
  
  Bug: angleproject:6976
  Change-Id: I388d429f0726b4d6a1c4ecd446ead93579a14a1b
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3448643
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuxin Hu <yuxinhu@google.com>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/vulkan/OverlayVk.cpp

• //
  // Copyright 2019 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.
  //
  // OverlayVk.cpp:
  //    Implements the OverlayVk class.
  //
  
  #include "libANGLE/renderer/vulkan/OverlayVk.h"
  
  #include "common/system_utils.h"
  #include "libANGLE/Context.h"
  #include "libANGLE/Overlay_font_autogen.h"
  #include "libANGLE/renderer/vulkan/ContextVk.h"
  
  #include <numeric>
  
  namespace rx
  {
  OverlayVk::OverlayVk(const gl::OverlayState &state) : OverlayImpl(state) {}
  OverlayVk::~OverlayVk() = default;
  
  angle::Result OverlayVk::init(const gl::Context *context, bool *successOut)
  {
      *successOut = false;
  
      ContextVk *contextVk = vk::GetImpl(context);
      ANGLE_TRY(createFont(contextVk));
  
      ANGLE_TRY(contextVk->flushImpl(nullptr, RenderPassClosureReason::OverlayFontCreation));
      *successOut = true;
      return angle::Result::Continue;
  }
  
  void OverlayVk::onDestroy(const gl::Context *context)
  {
      RendererVk *renderer = vk::GetImpl(context)->getRenderer();
      VkDevice device      = renderer->getDevice();
  
      mFontImage.destroy(renderer);
      mFontImageView.destroy(device);
  }
  
  angle::Result OverlayVk::createFont(ContextVk *contextVk)
  {
      RendererVk *renderer = contextVk->getRenderer();
  
      // Create a buffer to stage font data upload.
      VkBufferCreateInfo bufferCreateInfo = {};
      bufferCreateInfo.sType              = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
      bufferCreateInfo.size               = gl::overlay::kFontTotalDataSize;
      bufferCreateInfo.usage              = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
      bufferCreateInfo.sharingMode        = VK_SHARING_MODE_EXCLUSIVE;
  
      vk::RendererScoped<vk::BufferHelper> fontDataBuffer(renderer);
  
      ANGLE_TRY(fontDataBuffer.get().init(contextVk, bufferCreateInfo,
                                          VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT));
  
      uint8_t *mappedFontData;
      ANGLE_TRY(fontDataBuffer.get().map(contextVk, &mappedFontData));
  
      const uint8_t *fontData = mState.getFontData();
      memcpy(mappedFontData, fontData, gl::overlay::kFontTotalDataSize * sizeof(*fontData));
  
      ANGLE_TRY(fontDataBuffer.get().flush(renderer, 0, fontDataBuffer.get().getSize()));
      fontDataBuffer.get().unmap(renderer);
  
      // Don't use robust resource init for overlay widgets.
      constexpr bool kNoRobustInit = false;
  
      // Create the font image.
      ANGLE_TRY(mFontImage.init(
          contextVk, gl::TextureType::_2D,
          VkExtent3D{gl::overlay::kFontGlyphWidth, gl::overlay::kFontGlyphHeight, 1},
          renderer->getFormat(angle::FormatID::R8_UNORM), 1,
          VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT, gl::LevelIndex(0),
          gl::overlay::kFontMipCount, gl::overlay::kFontCharacters, kNoRobustInit, false));
      ANGLE_TRY(mFontImage.initMemory(contextVk, false, renderer->getMemoryProperties(),
                                      VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT));
      ANGLE_TRY(mFontImage.initImageView(
          contextVk, gl::TextureType::_2DArray, VK_IMAGE_ASPECT_COLOR_BIT, gl::SwizzleState(),
          &mFontImageView, vk::LevelIndex(0), gl::overlay::kFontMipCount));
  
      // Copy font data from staging buffer.
      vk::CommandBufferAccess access;
      access.onBufferTransferRead(&fontDataBuffer.get());
      access.onImageTransferWrite(gl::LevelIndex(0), gl::overlay::kFontMipCount, 0,
                                  gl::overlay::kFontCharacters, VK_IMAGE_ASPECT_COLOR_BIT,
                                  &mFontImage);
      vk::OutsideRenderPassCommandBuffer *fontDataUpload;
      ANGLE_TRY(contextVk->getOutsideRenderPassCommandBuffer(access, &fontDataUpload));
  
      VkBufferImageCopy copy           = {};
      copy.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
      copy.imageSubresource.layerCount = gl::overlay::kFontCharacters;
      copy.imageExtent.depth           = 1;
  
      for (uint32_t mip = 0; mip < gl::overlay::kFontMipCount; ++mip)
      {
          copy.bufferOffset              = gl::overlay::kFontMipDataOffset[mip];
          copy.bufferRowLength           = gl::overlay::kFontGlyphWidth >> mip;
          copy.bufferImageHeight         = gl::overlay::kFontGlyphHeight >> mip;
          copy.imageSubresource.mipLevel = mip;
          copy.imageExtent.width         = gl::overlay::kFontGlyphWidth >> mip;
          copy.imageExtent.height        = gl::overlay::kFontGlyphHeight >> mip;
  
          fontDataUpload->copyBufferToImage(fontDataBuffer.get().getBuffer().getHandle(),
                                            mFontImage.getImage(),
                                            VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &copy);
      }
  
      return angle::Result::Continue;
  }
  
  angle::Result OverlayVk::onPresent(ContextVk *contextVk,
                                     vk::ImageHelper *imageToPresent,
                                     const vk::ImageView *imageToPresentView,
                                     bool is90DegreeRotation)
  {
      if (mState.getEnabledWidgetCount() == 0)
      {
          return angle::Result::Continue;
      }
  
      RendererVk *renderer = contextVk->getRenderer();
  
      vk::RendererScoped<vk::BufferHelper> textDataBuffer(renderer);
      vk::RendererScoped<vk::BufferHelper> graphDataBuffer(renderer);
  
      VkBufferCreateInfo textBufferCreateInfo = {};
      textBufferCreateInfo.sType              = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
      textBufferCreateInfo.size               = mState.getTextWidgetsBufferSize();
      textBufferCreateInfo.usage              = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
      textBufferCreateInfo.sharingMode        = VK_SHARING_MODE_EXCLUSIVE;
  
      VkBufferCreateInfo graphBufferCreateInfo = textBufferCreateInfo;
      graphBufferCreateInfo.size               = mState.getGraphWidgetsBufferSize();
  
      ANGLE_TRY(textDataBuffer.get().init(contextVk, textBufferCreateInfo,
                                          VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT));
      ANGLE_TRY(graphDataBuffer.get().init(contextVk, graphBufferCreateInfo,
                                           VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT));
  
      uint8_t *textData;
      uint8_t *graphData;
      ANGLE_TRY(textDataBuffer.get().map(contextVk, &textData));
      ANGLE_TRY(graphDataBuffer.get().map(contextVk, &graphData));
  
      uint32_t textWidgetCount  = 0;
      uint32_t graphWidgetCount = 0;
  
      gl::Extents presentImageExtents(imageToPresent->getExtents().width,
                                      imageToPresent->getExtents().height, 1);
      mState.fillWidgetData(presentImageExtents, textData, graphData, &textWidgetCount,
                            &graphWidgetCount);
  
      ANGLE_TRY(textDataBuffer.get().flush(renderer, 0, textDataBuffer.get().getSize()));
      ANGLE_TRY(graphDataBuffer.get().flush(renderer, 0, graphDataBuffer.get().getSize()));
      textDataBuffer.get().unmap(renderer);
      graphDataBuffer.get().unmap(renderer);
  
      UtilsVk::OverlayDrawParameters params;
      params.textWidgetCount  = textWidgetCount;
      params.graphWidgetCount = graphWidgetCount;
      params.rotateXY         = is90DegreeRotation;
  
      return contextVk->getUtils().drawOverlay(contextVk, &textDataBuffer.get(),
                                               &graphDataBuffer.get(), &mFontImage, &mFontImageView,
                                               imageToPresent, imageToPresentView, params);
  }
  
  }  // namespace rx
  

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