1 files changed, 737 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/OverlayWidgets.cpp b/gfx/angle/checkout/src/libANGLE/OverlayWidgets.cpp
new file mode 100644
index 0000000000..f0581ce9d8
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/OverlayWidgets.cpp
@@ -0,0 +1,737 @@
+//
+// 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.
+//
+// OverlayWidgets.cpp:
+//    Implements functions that interpret widget data.  Data formats and limits correspond to the
+//    Vulkan implementation (as the only implementation).  They are generic enough so other backends
+//    could respect them too, if they implement the overlay.
+//
+
+#include "libANGLE/Overlay.h"
+#include "libANGLE/Overlay_font_autogen.h"
+
+#include <functional>
+
+namespace gl
+{
+namespace
+{
+// Internally, every widget is either Text or Graph.
+enum class WidgetInternalType
+{
+    Text,
+    Graph,
+
+    InvalidEnum,
+    EnumCount = InvalidEnum,
+};
+
+// A map that says how the API-facing widget types map to internal types.
+constexpr angle::PackedEnumMap<WidgetType, WidgetInternalType> kWidgetTypeToInternalMap = {
+    {WidgetType::Count, WidgetInternalType::Text},
+    {WidgetType::Text, WidgetInternalType::Text},
+    {WidgetType::PerSecond, WidgetInternalType::Text},
+    {WidgetType::RunningGraph, WidgetInternalType::Graph},
+    {WidgetType::RunningHistogram, WidgetInternalType::Graph},
+};
+
+// Structures and limits matching uniform buffers in vulkan/shaders/src/OverlayDraw.comp.  The size
+// of text and graph widgets is chosen such that they could fit in uniform buffers with minimum
+// required Vulkan size.
+constexpr size_t kMaxRenderableTextWidgets  = 32;
+constexpr size_t kMaxRenderableGraphWidgets = 32;
+constexpr size_t kMaxTextLength             = 256;
+constexpr size_t kMaxGraphDataSize          = 256;
+
+constexpr angle::PackedEnumMap<WidgetInternalType, size_t> kWidgetInternalTypeMaxWidgets = {
+    {WidgetInternalType::Text, kMaxRenderableTextWidgets},
+    {WidgetInternalType::Graph, kMaxRenderableGraphWidgets},
+};
+
+ANGLE_ENABLE_STRUCT_PADDING_WARNINGS
+
+// Structure matching buffer in vulkan/shaders/src/OverlayCull.comp.
+struct WidgetCoordinates
+{
+    uint32_t coordinates[kMaxRenderableTextWidgets + kMaxRenderableGraphWidgets][4];
+};
+
+// Structures matching buffers in vulkan/shaders/src/OverlayDraw.comp.
+struct TextWidgetData
+{
+    uint32_t coordinates[4];
+    float color[4];
+    uint32_t fontSize[3];
+    uint32_t padding;
+    uint8_t text[kMaxTextLength];
+};
+
+struct GraphWidgetData
+{
+    uint32_t coordinates[4];
+    float color[4];
+    uint32_t valueWidth;
+    uint32_t padding[3];
+    uint32_t values[kMaxGraphDataSize];
+};
+
+struct TextWidgets
+{
+    TextWidgetData widgets[kMaxRenderableTextWidgets];
+};
+
+struct GraphWidgets
+{
+    GraphWidgetData widgets[kMaxRenderableGraphWidgets];
+};
+
+ANGLE_DISABLE_STRUCT_PADDING_WARNINGS
+
+uint32_t GetWidgetCoord(int32_t src, uint32_t extent)
+{
+    int32_t dst = src < 0 ? extent + src : src;
+
+    return std::min<uint32_t>(std::max(dst, 0), extent - 1);
+}
+
+void GetWidgetCoordinates(const int32_t srcCoords[4],
+                          const gl::Extents &imageExtent,
+                          uint32_t dstCoordsOut[4])
+{
+    dstCoordsOut[0] = GetWidgetCoord(srcCoords[0], imageExtent.width);
+    dstCoordsOut[1] = GetWidgetCoord(srcCoords[1], imageExtent.height);
+    dstCoordsOut[2] = GetWidgetCoord(srcCoords[2], imageExtent.width);
+    dstCoordsOut[3] = GetWidgetCoord(srcCoords[3], imageExtent.height);
+}
+
+void GetWidgetColor(const float srcColor[4], float dstColor[4])
+{
+    memcpy(dstColor, srcColor, 4 * sizeof(dstColor[0]));
+}
+
+void GetTextFontSize(int srcFontSize, uint32_t dstFontSize[3])
+{
+    // .xy contains the font glyph width/height
+    dstFontSize[0] = overlay::kFontGlyphWidth >> srcFontSize;
+    dstFontSize[1] = overlay::kFontGlyphHeight >> srcFontSize;
+    // .z contains the mip
+    dstFontSize[2] = srcFontSize;
+}
+
+void GetGraphValueWidth(const int32_t srcCoords[4], size_t valueCount, uint32_t *dstValueWidth)
+{
+    const int32_t graphWidth = std::abs(srcCoords[2] - srcCoords[0]);
+
+    // If valueCount doesn't divide graphWidth, the graph bars won't fit well in its frame.
+    // Fix initOverlayWidgets() in that case.
+    ASSERT(graphWidth % valueCount == 0);
+
+    *dstValueWidth = graphWidth / valueCount;
+}
+
+void GetTextString(const std::string &src, uint8_t textOut[kMaxTextLength])
+{
+    for (size_t i = 0; i < src.length() && i < kMaxTextLength; ++i)
+    {
+        // The font image has 95 ASCII characters starting from ' '.
+        textOut[i] = src[i] - ' ';
+    }
+}
+
+void GetGraphValues(const std::vector<uint64_t> srcValues,
+                    size_t startIndex,
+                    float scale,
+                    uint32_t valuesOut[kMaxGraphDataSize])
+{
+    ASSERT(srcValues.size() <= kMaxGraphDataSize);
+
+    for (size_t i = 0; i < srcValues.size(); ++i)
+    {
+        size_t index = (startIndex + i) % srcValues.size();
+        valuesOut[i] = static_cast<uint32_t>(srcValues[index] * scale);
+    }
+}
+
+std::vector<uint64_t> CreateHistogram(const std::vector<uint64_t> values)
+{
+    std::vector<uint64_t> histogram(values.size(), 0);
+
+    for (uint64_t rank : values)
+    {
+        ++histogram[static_cast<size_t>(rank)];
+    }
+
+    return histogram;
+}
+
+using OverlayWidgetCounts  = angle::PackedEnumMap<WidgetInternalType, uint32_t>;
+using AppendWidgetDataFunc = void (*)(const overlay::Widget *widget,
+                                      const gl::Extents &imageExtent,
+                                      TextWidgetData *textWidget,
+                                      GraphWidgetData *graphWidget,
+                                      OverlayWidgetCounts *widgetCounts);
+}  // namespace
+
+namespace overlay_impl
+{
+#define ANGLE_DECLARE_APPEND_WIDGET_PROC(WIDGET_ID)                                              \
+    static void Append##WIDGET_ID(const overlay::Widget *widget, const gl::Extents &imageExtent, \
+                                  TextWidgetData *textWidget, GraphWidgetData *graphWidget,      \
+                                  OverlayWidgetCounts *widgetCounts);
+
+// This class interprets the generic data collected in every element into a human-understandable
+// widget.  This often means generating text specific to this item and scaling graph data to
+// something sensible.
+class AppendWidgetDataHelper
+{
+  public:
+    ANGLE_WIDGET_ID_X(ANGLE_DECLARE_APPEND_WIDGET_PROC)
+
+  private:
+    static std::ostream &OutputPerSecond(std::ostream &out, const overlay::PerSecond *perSecond);
+
+    static std::ostream &OutputText(std::ostream &out, const overlay::Text *text);
+
+    static std::ostream &OutputCount(std::ostream &out, const overlay::Count *count);
+
+    static void AppendTextCommon(const overlay::Widget *widget,
+                                 const gl::Extents &imageExtent,
+                                 const std::string &text,
+                                 TextWidgetData *textWidget,
+                                 OverlayWidgetCounts *widgetCounts);
+
+    using FormatGraphTitleFunc = std::function<std::string(uint64_t curValue, uint64_t maxValue)>;
+    static void AppendRunningGraphCommon(const overlay::Widget *widget,
+                                         const gl::Extents &imageExtent,
+                                         TextWidgetData *textWidget,
+                                         GraphWidgetData *graphWidget,
+                                         OverlayWidgetCounts *widgetCounts,
+                                         FormatGraphTitleFunc formatFunc);
+
+    using FormatHistogramTitleFunc =
+        std::function<std::string(size_t peakRange, size_t maxValueRange, size_t numRanges)>;
+    static void AppendRunningHistogramCommon(const overlay::Widget *widget,
+                                             const gl::Extents &imageExtent,
+                                             TextWidgetData *textWidget,
+                                             GraphWidgetData *graphWidget,
+                                             OverlayWidgetCounts *widgetCounts,
+                                             FormatHistogramTitleFunc formatFunc);
+
+    static void AppendGraphCommon(const overlay::Widget *widget,
+                                  const gl::Extents &imageExtent,
+                                  const std::vector<uint64_t> runningValues,
+                                  size_t startIndex,
+                                  float scale,
+                                  GraphWidgetData *graphWidget,
+                                  OverlayWidgetCounts *widgetCounts);
+};
+
+void AppendWidgetDataHelper::AppendTextCommon(const overlay::Widget *widget,
+                                              const gl::Extents &imageExtent,
+                                              const std::string &text,
+                                              TextWidgetData *textWidget,
+                                              OverlayWidgetCounts *widgetCounts)
+{
+    GetWidgetCoordinates(widget->coords, imageExtent, textWidget->coordinates);
+    GetWidgetColor(widget->color, textWidget->color);
+    GetTextFontSize(widget->fontSize, textWidget->fontSize);
+    GetTextString(text, textWidget->text);
+
+    ++(*widgetCounts)[WidgetInternalType::Text];
+}
+
+void AppendWidgetDataHelper::AppendGraphCommon(const overlay::Widget *widget,
+                                               const gl::Extents &imageExtent,
+                                               const std::vector<uint64_t> runningValues,
+                                               size_t startIndex,
+                                               float scale,
+                                               GraphWidgetData *graphWidget,
+                                               OverlayWidgetCounts *widgetCounts)
+{
+    const overlay::RunningGraph *widgetAsGraph = static_cast<const overlay::RunningGraph *>(widget);
+
+    GetWidgetCoordinates(widget->coords, imageExtent, graphWidget->coordinates);
+    GetWidgetColor(widget->color, graphWidget->color);
+    GetGraphValueWidth(widget->coords, widgetAsGraph->runningValues.size(),
+                       &graphWidget->valueWidth);
+    GetGraphValues(runningValues, startIndex, scale, graphWidget->values);
+
+    ++(*widgetCounts)[WidgetInternalType::Graph];
+}
+
+void AppendWidgetDataHelper::AppendRunningGraphCommon(
+    const overlay::Widget *widget,
+    const gl::Extents &imageExtent,
+    TextWidgetData *textWidget,
+    GraphWidgetData *graphWidget,
+    OverlayWidgetCounts *widgetCounts,
+    AppendWidgetDataHelper::FormatGraphTitleFunc formatFunc)
+{
+    const overlay::RunningGraph *graph   = static_cast<const overlay::RunningGraph *>(widget);
+    const overlay::Widget *matchToWidget = widget->matchToWidget;
+
+    if (matchToWidget == nullptr)
+    {
+        matchToWidget = widget;
+    }
+    const overlay::RunningGraph *matchToGraph =
+        static_cast<const overlay::RunningGraph *>(matchToWidget);
+
+    const uint64_t maxValue =
+        *std::max_element(graph->runningValues.begin(), graph->runningValues.end());
+    const uint64_t maxValueInMatchToGraph =
+        *std::max_element(matchToGraph->runningValues.begin(), matchToGraph->runningValues.end());
+    const int32_t graphHeight = std::abs(widget->coords[3] - widget->coords[1]);
+    const float graphScale    = static_cast<float>(graphHeight) / maxValueInMatchToGraph;
+
+    const size_t graphSize  = graph->runningValues.size();
+    const size_t currentIdx = graph->lastValueIndex - 1;
+
+    const uint64_t curValue = graph->runningValues[(graphSize + currentIdx) % graphSize];
+
+    AppendGraphCommon(widget, imageExtent, graph->runningValues, graph->lastValueIndex + 1,
+                      graphScale, graphWidget, widgetCounts);
+
+    if ((*widgetCounts)[WidgetInternalType::Text] <
+        kWidgetInternalTypeMaxWidgets[WidgetInternalType::Text])
+    {
+        std::string text = formatFunc(curValue, maxValue);
+        AppendTextCommon(&graph->description, imageExtent, text, textWidget, widgetCounts);
+    }
+}
+
+// static
+void AppendWidgetDataHelper::AppendRunningHistogramCommon(const overlay::Widget *widget,
+                                                          const gl::Extents &imageExtent,
+                                                          TextWidgetData *textWidget,
+                                                          GraphWidgetData *graphWidget,
+                                                          OverlayWidgetCounts *widgetCounts,
+                                                          FormatHistogramTitleFunc formatFunc)
+{
+    const overlay::RunningHistogram *runningHistogram =
+        static_cast<const overlay::RunningHistogram *>(widget);
+
+    std::vector<uint64_t> histogram = CreateHistogram(runningHistogram->runningValues);
+    auto peakRangeIt                = std::max_element(histogram.rbegin(), histogram.rend());
+    const uint64_t peakRangeValue   = *peakRangeIt;
+    const int32_t graphHeight       = std::abs(widget->coords[3] - widget->coords[1]);
+    const float graphScale          = static_cast<float>(graphHeight) / peakRangeValue;
+    auto maxValueIter               = std::find_if(histogram.rbegin(), histogram.rend(),
+                                                   [](uint64_t value) { return value != 0; });
+
+    AppendGraphCommon(widget, imageExtent, histogram, 0, graphScale, graphWidget, widgetCounts);
+
+    if ((*widgetCounts)[WidgetInternalType::Text] <
+        kWidgetInternalTypeMaxWidgets[WidgetInternalType::Text])
+    {
+        size_t peakRange     = std::distance(peakRangeIt, histogram.rend() - 1);
+        size_t maxValueRange = std::distance(maxValueIter, histogram.rend() - 1);
+
+        std::string text = formatFunc(peakRange, maxValueRange, histogram.size());
+        AppendTextCommon(&runningHistogram->description, imageExtent, text, textWidget,
+                         widgetCounts);
+    }
+}
+
+void AppendWidgetDataHelper::AppendFPS(const overlay::Widget *widget,
+                                       const gl::Extents &imageExtent,
+                                       TextWidgetData *textWidget,
+                                       GraphWidgetData *graphWidget,
+                                       OverlayWidgetCounts *widgetCounts)
+{
+    const overlay::PerSecond *fps = static_cast<const overlay::PerSecond *>(widget);
+    std::ostringstream text;
+    text << "FPS: ";
+    OutputPerSecond(text, fps);
+
+    AppendTextCommon(widget, imageExtent, text.str(), textWidget, widgetCounts);
+}
+
+void AppendWidgetDataHelper::AppendVulkanLastValidationMessage(const overlay::Widget *widget,
+                                                               const gl::Extents &imageExtent,
+                                                               TextWidgetData *textWidget,
+                                                               GraphWidgetData *graphWidget,
+                                                               OverlayWidgetCounts *widgetCounts)
+{
+    const overlay::Text *lastValidationMessage = static_cast<const overlay::Text *>(widget);
+    std::ostringstream text;
+    text << "Last VVL Message: ";
+    OutputText(text, lastValidationMessage);
+
+    AppendTextCommon(widget, imageExtent, text.str(), textWidget, widgetCounts);
+}
+
+void AppendWidgetDataHelper::AppendVulkanValidationMessageCount(const overlay::Widget *widget,
+                                                                const gl::Extents &imageExtent,
+                                                                TextWidgetData *textWidget,
+                                                                GraphWidgetData *graphWidget,
+                                                                OverlayWidgetCounts *widgetCounts)
+{
+    const overlay::Count *validationMessageCount = static_cast<const overlay::Count *>(widget);
+    std::ostringstream text;
+    text << "VVL Message Count: ";
+    OutputCount(text, validationMessageCount);
+
+    AppendTextCommon(widget, imageExtent, text.str(), textWidget, widgetCounts);
+}
+
+void AppendWidgetDataHelper::AppendVulkanRenderPassCount(const overlay::Widget *widget,
+                                                         const gl::Extents &imageExtent,
+                                                         TextWidgetData *textWidget,
+                                                         GraphWidgetData *graphWidget,
+                                                         OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "RenderPass Count: " << maxValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanSecondaryCommandBufferPoolWaste(
+    const overlay::Widget *widget,
+    const gl::Extents &imageExtent,
+    TextWidgetData *textWidget,
+    GraphWidgetData *graphWidget,
+    OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](size_t peakRange, size_t maxValueRange, size_t numRanges) {
+        std::ostringstream text;
+        size_t peakPercent = (peakRange * 100 + 50) / numRanges;
+        text << "CB Pool Waste (Peak: " << peakPercent << "%)";
+        return text.str();
+    };
+
+    AppendRunningHistogramCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts,
+                                 format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanRenderPassBufferCount(const overlay::Widget *widget,
+                                                               const gl::Extents &imageExtent,
+                                                               TextWidgetData *textWidget,
+                                                               GraphWidgetData *graphWidget,
+                                                               OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "RP VkBuffers (Max: " << maxValue << ")";
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanWriteDescriptorSetCount(const overlay::Widget *widget,
+                                                                 const gl::Extents &imageExtent,
+                                                                 TextWidgetData *textWidget,
+                                                                 GraphWidgetData *graphWidget,
+                                                                 OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "WriteDescriptorSet Count: " << maxValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanDescriptorSetAllocations(const overlay::Widget *widget,
+                                                                  const gl::Extents &imageExtent,
+                                                                  TextWidgetData *textWidget,
+                                                                  GraphWidgetData *graphWidget,
+                                                                  OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Descriptor Set Allocations: " << maxValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanShaderResourceDSHitRate(const overlay::Widget *widget,
+                                                                 const gl::Extents &imageExtent,
+                                                                 TextWidgetData *textWidget,
+                                                                 GraphWidgetData *graphWidget,
+                                                                 OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Shader Resource DS Hit Rate (Max: " << maxValue << "%)";
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanDynamicBufferAllocations(const overlay::Widget *widget,
+                                                                  const gl::Extents &imageExtent,
+                                                                  TextWidgetData *textWidget,
+                                                                  GraphWidgetData *graphWidget,
+                                                                  OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "DynamicBuffer Allocations (Max: " << maxValue << ")";
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanTextureDescriptorCacheSize(
+    const overlay::Widget *widget,
+    const gl::Extents &imageExtent,
+    TextWidgetData *textWidget,
+    GraphWidgetData *graphWidget,
+    OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Total Texture Descriptor Cache Size: " << curValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanUniformDescriptorCacheSize(
+    const overlay::Widget *widget,
+    const gl::Extents &imageExtent,
+    TextWidgetData *textWidget,
+    GraphWidgetData *graphWidget,
+    OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Total Uniform Descriptor Cache Size: " << curValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanDescriptorCacheSize(const overlay::Widget *widget,
+                                                             const gl::Extents &imageExtent,
+                                                             TextWidgetData *textWidget,
+                                                             GraphWidgetData *graphWidget,
+                                                             OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Total Descriptor Cache Size: " << curValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanDescriptorCacheKeySize(const overlay::Widget *widget,
+                                                                const gl::Extents &imageExtent,
+                                                                TextWidgetData *textWidget,
+                                                                GraphWidgetData *graphWidget,
+                                                                OverlayWidgetCounts *widgetCounts)
+{
+    const overlay::Count *countWidget = static_cast<const overlay::Count *>(widget);
+    std::ostringstream text;
+    double kb = static_cast<double>(countWidget->count) / 1000.0;
+    text << "DS Cache Key Size: " << std::fixed << std::setprecision(1) << kb << " kb";
+
+    AppendTextCommon(widget, imageExtent, text.str(), textWidget, widgetCounts);
+}
+
+void AppendWidgetDataHelper::AppendVulkanAttemptedSubmissions(const overlay::Widget *widget,
+                                                              const gl::Extents &imageExtent,
+                                                              TextWidgetData *textWidget,
+                                                              GraphWidgetData *graphWidget,
+                                                              OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Attempted submissions (peak): " << maxValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanActualSubmissions(const overlay::Widget *widget,
+                                                           const gl::Extents &imageExtent,
+                                                           TextWidgetData *textWidget,
+                                                           GraphWidgetData *graphWidget,
+                                                           OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Actual submissions (peak): " << maxValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanPipelineCacheLookups(const overlay::Widget *widget,
+                                                              const gl::Extents &imageExtent,
+                                                              TextWidgetData *textWidget,
+                                                              GraphWidgetData *graphWidget,
+                                                              OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Pipeline Cache Lookups (peak): " << maxValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanPipelineCacheMisses(const overlay::Widget *widget,
+                                                             const gl::Extents &imageExtent,
+                                                             TextWidgetData *textWidget,
+                                                             GraphWidgetData *graphWidget,
+                                                             OverlayWidgetCounts *widgetCounts)
+{
+    auto format = [](uint64_t curValue, uint64_t maxValue) {
+        std::ostringstream text;
+        text << "Pipeline Cache Misses (peak): " << maxValue;
+        return text.str();
+    };
+
+    AppendRunningGraphCommon(widget, imageExtent, textWidget, graphWidget, widgetCounts, format);
+}
+
+void AppendWidgetDataHelper::AppendVulkanTotalPipelineCacheHitTimeMs(
+    const overlay::Widget *widget,
+    const gl::Extents &imageExtent,
+    TextWidgetData *textWidget,
+    GraphWidgetData *graphWidget,
+    OverlayWidgetCounts *widgetCounts)
+{
+    const overlay::Count *totalTime = static_cast<const overlay::Count *>(widget);
+    std::ostringstream text;
+    text << "Total Pipeline Cache Hit Time: ";
+    OutputCount(text, totalTime);
+    text << "ms";
+
+    AppendTextCommon(widget, imageExtent, text.str(), textWidget, widgetCounts);
+}
+
+void AppendWidgetDataHelper::AppendVulkanTotalPipelineCacheMissTimeMs(
+    const overlay::Widget *widget,
+    const gl::Extents &imageExtent,
+    TextWidgetData *textWidget,
+    GraphWidgetData *graphWidget,
+    OverlayWidgetCounts *widgetCounts)
+{
+    const overlay::Count *totalTime = static_cast<const overlay::Count *>(widget);
+    std::ostringstream text;
+    text << "Total Pipeline Cache Miss Time: ";
+    OutputCount(text, totalTime);
+    text << "ms";
+
+    AppendTextCommon(widget, imageExtent, text.str(), textWidget, widgetCounts);
+}
+
+std::ostream &AppendWidgetDataHelper::OutputPerSecond(std::ostream &out,
+                                                      const overlay::PerSecond *perSecond)
+{
+    return out << perSecond->lastPerSecondCount;
+}
+
+std::ostream &AppendWidgetDataHelper::OutputText(std::ostream &out, const overlay::Text *text)
+{
+    return out << text->text;
+}
+
+std::ostream &AppendWidgetDataHelper::OutputCount(std::ostream &out, const overlay::Count *count)
+{
+    return out << count->count;
+}
+}  // namespace overlay_impl
+
+namespace
+{
+#define ANGLE_APPEND_WIDGET_MAP_PROC(WIDGET_ID) \
+    {WidgetId::WIDGET_ID, overlay_impl::AppendWidgetDataHelper::Append##WIDGET_ID},
+
+constexpr angle::PackedEnumMap<WidgetId, AppendWidgetDataFunc> kWidgetIdToAppendDataFuncMap = {
+    ANGLE_WIDGET_ID_X(ANGLE_APPEND_WIDGET_MAP_PROC)};
+}  // namespace
+
+namespace overlay
+{
+const Text *Widget::getDescriptionWidget() const
+{
+    return nullptr;
+}
+RunningGraph::RunningGraph(size_t n) : runningValues(n, 0) {}
+RunningGraph::~RunningGraph() = default;
+const Text *RunningGraph::getDescriptionWidget() const
+{
+    return &description;
+}
+}  // namespace overlay
+
+size_t OverlayState::getWidgetCoordinatesBufferSize() const
+{
+    return sizeof(WidgetCoordinates);
+}
+
+size_t OverlayState::getTextWidgetsBufferSize() const
+{
+    return sizeof(TextWidgets);
+}
+
+size_t OverlayState::getGraphWidgetsBufferSize() const
+{
+    return sizeof(GraphWidgets);
+}
+
+void OverlayState::fillWidgetData(const gl::Extents &imageExtents,
+                                  uint8_t *textData,
+                                  uint8_t *graphData,
+                                  uint32_t *activeTextWidgetCountOut,
+                                  uint32_t *activeGraphWidgetCountOut) const
+{
+    TextWidgets *textWidgets   = reinterpret_cast<TextWidgets *>(textData);
+    GraphWidgets *graphWidgets = reinterpret_cast<GraphWidgets *>(graphData);
+
+    memset(textWidgets, overlay::kFontCharacters, sizeof(*textWidgets));
+    memset(graphWidgets, 0, sizeof(*graphWidgets));
+
+    OverlayWidgetCounts widgetCounts = {};
+
+    for (WidgetId id : angle::AllEnums<WidgetId>())
+    {
+        const std::unique_ptr<overlay::Widget> &widget = mOverlayWidgets[id];
+        if (!widget->enabled)
+        {
+            continue;
+        }
+
+        WidgetInternalType internalType = kWidgetTypeToInternalMap[widget->type];
+        ASSERT(internalType != WidgetInternalType::InvalidEnum);
+
+        if (widgetCounts[internalType] >= kWidgetInternalTypeMaxWidgets[internalType])
+        {
+            continue;
+        }
+
+        AppendWidgetDataFunc appendFunc = kWidgetIdToAppendDataFuncMap[id];
+        ASSERT(appendFunc);
+        appendFunc(widget.get(), imageExtents,
+                   &textWidgets->widgets[widgetCounts[WidgetInternalType::Text]],
+                   &graphWidgets->widgets[widgetCounts[WidgetInternalType::Graph]], &widgetCounts);
+    }
+
+    *activeTextWidgetCountOut  = widgetCounts[WidgetInternalType::Text];
+    *activeGraphWidgetCountOut = widgetCounts[WidgetInternalType::Graph];
+}
+
+}  // namespace gl