From e8652e544a9bc331a76a6af9bc33d6f33eb8ea1f Mon Sep 17 00:00:00 2001
From: Triang3l <triang3l@yandex.ru>
Date: Sun, 17 Jul 2022 17:29:41 +0300
Subject: [PATCH] [GPU] Translucent trace viewer controls

---
 src/xenia/gpu/trace_viewer.cc | 4 ++++
 src/xenia/gpu/trace_viewer.h  | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/src/xenia/gpu/trace_viewer.cc b/src/xenia/gpu/trace_viewer.cc
index 5d5978fd1..0d43b0a5e 100644
--- a/src/xenia/gpu/trace_viewer.cc
+++ b/src/xenia/gpu/trace_viewer.cc
@@ -223,6 +223,7 @@ void TraceViewer::DrawUI() {
 void TraceViewer::DrawControllerUI() {
   ImGui::SetNextWindowPos(ImVec2(5, 5), ImGuiCond_FirstUseEver);
   ImGui::SetNextWindowSize(ImVec2(340, 60));
+  ImGui::SetNextWindowBgAlpha(kWindowBgAlpha);
   if (!ImGui::Begin("Controller", nullptr)) {
     ImGui::End();
     return;
@@ -274,6 +275,7 @@ void TraceViewer::DrawPacketDisassemblerUI() {
       ImVec2(float(window_->GetActualLogicalWidth()) - 500 - 5, 5),
       ImGuiCond_FirstUseEver);
   ImGui::SetNextWindowSize(ImVec2(500, 300));
+  ImGui::SetNextWindowBgAlpha(kWindowBgAlpha);
   if (!ImGui::Begin("Packet Disassembler", nullptr)) {
     ImGui::End();
     return;
@@ -493,6 +495,7 @@ int TraceViewer::RecursiveDrawCommandBufferUI(
 void TraceViewer::DrawCommandListUI() {
   ImGui::SetNextWindowPos(ImVec2(5, 70), ImGuiCond_FirstUseEver);
   ImGui::SetNextWindowSize(ImVec2(200, 640));
+  ImGui::SetNextWindowBgAlpha(kWindowBgAlpha);
   if (!ImGui::Begin("Command List", nullptr)) {
     ImGui::End();
     return;
@@ -1106,6 +1109,7 @@ void TraceViewer::DrawStateUI() {
       ImVec2(float(window_->GetActualLogicalWidth()) - 500 - 5, 30),
       ImGuiCond_FirstUseEver);
   ImGui::SetNextWindowSize(ImVec2(500, 680));
+  ImGui::SetNextWindowBgAlpha(kWindowBgAlpha);
   if (!ImGui::Begin("State", nullptr)) {
     ImGui::End();
     return;
diff --git a/src/xenia/gpu/trace_viewer.h b/src/xenia/gpu/trace_viewer.h
index b41b18aca..58ab16e4e 100644
--- a/src/xenia/gpu/trace_viewer.h
+++ b/src/xenia/gpu/trace_viewer.h
@@ -95,6 +95,11 @@ class TraceViewer : public xe::ui::WindowedApp {
     kHostDisasm,
   };
 
+  // Same as for Dear ImGui tooltips. Windows are translucent as the controls
+  // may take a pretty large fraction of the screen, especially on small
+  // screens, so the image from the guest can be seen through them.
+  static constexpr float kWindowBgAlpha = 0.6f;
+
   bool Load(const std::string_view trace_file_path);
 
   void DrawUI();