Visualizer: Implement region search + highlight

Signed-off-by: Jacob Hilliard <jhlliar@amazon.com>

Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiCpuProfiler.h

@@ -165,9 +165,11 @@ namespace AZ
             AZStd::vector<AZStd::sys_time_t> m_frameEndTicks = { INT64_MIN };
 
             // Main data structure for storing function statistics to be shown in the popup windows.
-            // For now we default allocate for all regions on the first render frame and then use RegionStatistics.m_draw to determine
-            // if we should draw the window or not. FIXME(ATOM-15948) this should be changed once RegionStatistics gets heavier. 
-            AZStd::unordered_map<const GroupRegionName*, RegionStatistics> m_regionStatisticsMap;
+            // Uses the group name + region name as a key - just the region name does not suffice since there are collisions (ex. GarbageCollect)
+            AZStd::unordered_map<AZStd::string, RegionStatistics> m_regionStatisticsMap;
+
+            // Filter for highlighting regions on the visualizer
+            ImGuiTextFilter m_regionHighlightFilter;
         };
     } // namespace Render
 } // namespace AZ

Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiCpuProfiler.inl

@@ -279,8 +279,8 @@ namespace AZ
             if (ImGui::BeginChild("Options and Statistics", { 0, 0 }, true))
             {
                 ImGui::Columns(3, "Options", true);
-                ImGui::Text("Frames To Collect:");
-                ImGui::SliderInt("", &m_framesToCollect, 10, 10000, "%d", ImGuiSliderFlags_AlwaysClamp | ImGuiSliderFlags_Logarithmic);
+                ImGui::SliderInt("Saved Frames", &m_framesToCollect, 10, 10000, "%d", ImGuiSliderFlags_AlwaysClamp | ImGuiSliderFlags_Logarithmic);
+                m_regionHighlightFilter.Draw("Find Region");
 
                 ImGui::NextColumn();
 
@@ -522,6 +522,12 @@ namespace AZ
 
         inline void ImGuiCpuProfiler::DrawBlock(const TimeRegion& block, u64 targetRow)
         {
+            // Don't draw anything if the user is searching for regions and this block doesn't pass the filter
+            if (!m_regionHighlightFilter.PassFilter(block.m_groupRegionName->m_regionName))
+            {
+                return;
+            }
+
             float wy = ImGui::GetWindowPos().y - ImGui::GetScrollY();
 
             ImDrawList* drawList = ImGui::GetWindowDrawList();