From 863b36d04b90510f8e818a4c45fe253dc7bb27dd Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf@nereid.pl>
Date: Fri, 30 Sep 2022 00:39:42 +0200
Subject: [PATCH] Emscripten expects GLES2 (WebGL 1).

---
 profiler/src/BackendGlfw.cpp | 10 +++++++++-
 server/TracyTexture.cpp      |  6 +++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/profiler/src/BackendGlfw.cpp b/profiler/src/BackendGlfw.cpp
index 02ab64c8..516fc05c 100644
--- a/profiler/src/BackendGlfw.cpp
+++ b/profiler/src/BackendGlfw.cpp
@@ -1,6 +1,10 @@
 #include "imgui/imgui_impl_glfw.h"
 #include "imgui/imgui_impl_opengl3.h"
-#include "imgui/imgui_impl_opengl3_loader.h"
+#ifdef __EMSCRIPTEN__
+#  include <GLES2/gl2.h>
+#else
+#  include "imgui/imgui_impl_opengl3_loader.h"
+#endif
 
 #include <chrono>
 #include <GLFW/glfw3.h>
@@ -80,7 +84,11 @@ Backend::Backend( const char* title, std::function<void()> redraw, RunQueue* mai
     glfwSetWindowRefreshCallback( s_window, []( GLFWwindow* ) { s_redraw(); } );
 
     ImGui_ImplGlfw_InitForOpenGL( s_window, true );
+#ifdef __EMSCRIPTEN__
+    ImGui_ImplOpenGL3_Init( "#version 100" );
+#else
     ImGui_ImplOpenGL3_Init( "#version 150" );
+#endif
 
     s_redraw = redraw;
     s_mainThreadTasks = mainThreadTasks;
diff --git a/server/TracyTexture.cpp b/server/TracyTexture.cpp
index 8bc6f465..1fa748c2 100644
--- a/server/TracyTexture.cpp
+++ b/server/TracyTexture.cpp
@@ -1,6 +1,10 @@
 #include <inttypes.h>
 
-#include "../profiler/src/imgui/imgui_impl_opengl3_loader.h"
+#ifdef __EMSCRIPTEN__
+#  include <GLES2/gl2.h>
+#else
+#  include "../profiler/src/imgui/imgui_impl_opengl3_loader.h"
+#endif
 #include "TracyTexture.hpp"
 
 #ifndef COMPRESSED_RGB_S3TC_DXT1_EXT