Method PopulateImage

renderdoc/driver/gl/gl_shaderdebug.cpp:1744–1846

Must be called from the replay manager thread (the debugger thread)

  // Must be called from the replay manager thread (the debugger thread)
  void PopulateImage(const ShaderBindIndex &bind)
  {
    CHECK_DEVICE_THREAD();
    ImageData data;
    bool valid = true;
    const Descriptor &imgData = GetDescriptor("performing image load/store", bind, valid);
    if(valid)
    {
      // if the resources might be dirty from side-effects from the action, replay back to right
      // before it.
      if(m_ResourcesDirty)
      {
        GLMarkerRegion region("un-dirtying resources");
        m_pDriver->GetReplay()->ReplayLog(m_EventID, eReplay_WithoutDraw);
        m_ResourcesDirty = false;
      }

      if(imgData.type == DescriptorType::TypedBuffer ||
         imgData.type == DescriptorType::ReadWriteTypedBuffer)
      {
        ResourceId buffer = imgData.resource;
        uint64_t offset = imgData.byteOffset;
        GLenum format = MakeGLFormat(imgData.format);
        uint64_t byteWidth = imgData.byteSize;

        data.fmt = imgData.format;
        data.texelSize = (uint32_t)GetByteSize(1, 1, 1, GetBaseFormat(format), GetDataType(format));

        // convert to a texel width, rounding down as per spec
        data.width = uint32_t(byteWidth / data.texelSize);
        data.height = 1;
        data.depth = 1;

        data.samplePitch = data.slicePitch = data.rowPitch = data.width * data.texelSize;

        m_pDriver->GetReplay()->GetBufferData(imgData.resource, offset, data.rowPitch, data.bytes);
      }
      else if(imgData.resource != ResourceId())
      {
        ResourceId id = imgData.resource;
        const WrappedOpenGL::TextureData &texProps = m_pDriver->m_Textures[id];

        uint32_t mip = imgData.firstMip;

        data.width = RDCMAX(1, texProps.width >> mip);
        data.height = RDCMAX(1, texProps.height >> mip);
        if(texProps.curType == eGL_TEXTURE_3D)
        {
          data.depth = RDCMAX(1, texProps.depth >> mip);
        }
        else
        {
          data.depth = texProps.depth;
        }

        GLenum format = MakeGLFormat(imgData.format);

        data.fmt = imgData.format;