initial add of imgui

Makefile

@@ -17,6 +17,8 @@ LD = $(CC)
 STEAM = steam/sdk
 STEAMAPI =
 
+LDFLAGS += -lstdc++
+
 ifeq ($(CROSS)$(CC), emcc)
   LDFLAGS += --shell-file shell.html --closure 1
   CPPFLAGS += -Wbad-function-cast -Wcast-function-type -sSTACK_SIZE=1MB -sALLOW_MEMORY_GROWTH -sINITIAL_MEMORY=128MB
@@ -148,7 +150,7 @@ OBJS := $(patsubst %.m, %$(INFO).o, $(OBJS))
 
 engineincs != find source/engine -maxdepth 1 -type d
 includeflag != find source -type d -name include
-includeflag += $(engineincs) source/engine/thirdparty/sokol source/engine/thirdparty/stb source/engine/thirdparty/cgltf source/engine/thirdparty/TinySoundFont source/engine/thirdparty/dr_libs
+includeflag += $(engineincs) source/engine/thirdparty/sokol source/engine/thirdparty/stb source/engine/thirdparty/cgltf source/engine/thirdparty/TinySoundFont source/engine/thirdparty/dr_libs source/engine/thirdparty/imgui
 includeflag += $(STEAM)/public
 includeflag += source
 includeflag := $(addprefix -I, $(includeflag))

source/engine/gui.cpp

@@ -0,0 +1,96 @@
+#include "gui.h"
+#include "render.h"
+#include "sokol/sokol_app.h"
+#include "imgui.h"
+#define SOKOL_IMPL
+#include "sokol/util/sokol_imgui.h"
+#include "sokol/util/sokol_gfx_imgui.h"
+
+static sgimgui_t sgimgui;
+
+#include "jsffi.h"
+
+JSC_CCALL(imgui_begin,
+char *title = js2strdup(argv[0]);
+bool active = true;
+ImGui::Begin(title, &active, ImGuiWindowFlags_MenuBar);
+free(title);
+return boolean2js(active);
+)
+
+JSC_CCALL(imgui_end, ImGui::End())
+
+JSC_CCALL(imgui_beginmenu,
+  char *title = js2strdup(argv[0]);
+  bool active = ImGui::BeginMenu(title);
+  free(title);
+  return boolean2js(active);
+)
+
+JSC_CCALL(imgui_menuitem,
+  char *name = js2strdup(argv[0]);
+  char *hotkey = js2strdup(argv[1]);
+  if (ImGui::MenuItem(name,hotkey))
+    script_call_sym(argv[2], 0, NULL);
+  free(name);
+  free(hotkey);
+)
+
+JSC_CCALL(imgui_beginmenubar, ImGui::BeginMenuBar())
+JSC_CCALL(imgui_endmenubar, ImGui::EndMenuBar())
+
+static const JSCFunctionListEntry js_imgui_funcs[] = {
+  MIST_FUNC_DEF(imgui, begin, 1),
+  MIST_FUNC_DEF(imgui, end,0),
+  MIST_FUNC_DEF(imgui, beginmenu, 1),
+  MIST_FUNC_DEF(imgui, menuitem, 3),
+  MIST_FUNC_DEF(imgui, beginmenubar, 0),
+  MIST_FUNC_DEF(imgui, endmenubar, 0)
+};
+
+static int started = 0;
+
+JSValue gui_init(JSContext *js)
+{
+  simgui_desc_t sdesc = {0};
+  simgui_setup(&sdesc);
+  
+  sgimgui_desc_t desc = {0};
+  sgimgui_init(&sgimgui, &desc);
+
+  JSValue imgui = JS_NewObject(js);
+  JS_SetPropertyFunctionList(js, imgui, js_imgui_funcs, countof(js_imgui_funcs));
+  started = 1;
+  return imgui;
+}
+
+void gui_input(sapp_event *e)
+{
+  if (started)
+    simgui_handle_event(e);
+}
+
+void gui_newframe(int x, int y, float dt)
+{
+  simgui_new_frame(&(simgui_frame_desc_t){
+    .width = x,
+    .height = y,
+    .delta_time = dt
+  });
+}
+
+void gfx_gui()
+{
+  sgimgui_draw(&sgimgui);
+  sgimgui_draw_menu(&sgimgui, "sokol-gfx");
+}
+
+void gui_endframe()
+{
+  simgui_render();
+}
+
+void gui_exit()
+{
+  sgimgui_discard(&sgimgui);
+}

source/engine/gui.h

@@ -0,0 +1,22 @@
+#ifndef GUI_H
+#define GUI_H
+
+#include "jsffi.h"
+#include "sokol/sokol_app.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+JSValue gui_init(JSContext *js);
+void gui_newframe(int x, int y, float dt);
+void gfx_gui();
+void gui_input(sapp_event *e);
+void gui_endframe();
+void gui_exit();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

source/engine/jsffi.c

@@ -34,6 +34,7 @@
 #include "par/par_shapes.h"
 #include "sokol_glue.h"
 #include <chipmunk/chipmunk_unsafe.h>
+#include "gui.h"
 
 #if (defined(_WIN32) || defined(__WIN32__))
 #include <direct.h>
@@ -968,6 +969,12 @@ JSC_CCALL(render_screencolor,
   return texture2js(&screencolor)
 )
 
+JSC_CCALL(render_imgui_new, gui_newframe(js2number(argv[0]),js2number(argv[1]),js2number(argv[2])); )
+JSC_CCALL(render_gfx_gui, gfx_gui())
+JSC_CCALL(render_imgui_end, gui_endframe())
+
+JSC_CCALL(render_imgui_init, return gui_init(js))
+
 static const JSCFunctionListEntry js_render_funcs[] = {
   MIST_FUNC_DEF(render, flushtext, 0),
   MIST_FUNC_DEF(render, camera_screen2world, 2),
@@ -990,6 +997,10 @@ static const JSCFunctionListEntry js_render_funcs[] = {
   MIST_FUNC_DEF(render, setuniv4, 2),
   MIST_FUNC_DEF(render, setpipeline, 1),
   MIST_FUNC_DEF(render, screencolor, 0),
+  MIST_FUNC_DEF(render, imgui_new, 3),
+  MIST_FUNC_DEF(render, gfx_gui, 0),
+  MIST_FUNC_DEF(render, imgui_end, 0),
+  MIST_FUNC_DEF(render, imgui_init, 0),
 };
 
 JSC_CCALL(gui_scissor, sg_apply_scissor_rect(js2number(argv[0]), js2number(argv[1]), js2number(argv[2]), js2number(argv[3]), 0))

source/engine/render.c

@@ -18,6 +18,8 @@
 
 #include "sokol/sokol_gfx.h"
 
+#include "gui.h"
+
 static HMM_Vec2 lastuse = {0};
 
 HMM_Vec2 campos = {0,0};

source/engine/script.h

@@ -1,6 +1,10 @@
 #ifndef SCRIPT_H
 #define SCRIPT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "quickjs/quickjs.h"
 #include <time.h>
 
@@ -26,4 +30,8 @@ void script_call_sym(JSValue sym, int argc, JSValue *argv);
 
 void script_gc();
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

source/engine/thirdparty/imgui/imconfig.h

@@ -0,0 +1,131 @@
+//-----------------------------------------------------------------------------
+// DEAR IMGUI COMPILE-TIME OPTIONS
+// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
+// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
+//-----------------------------------------------------------------------------
+// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/rebased branch with your modifications to it)
+// B) or '#define IMGUI_USER_CONFIG "my_imgui_config.h"' in your project and then add directives in your own file without touching this template.
+//-----------------------------------------------------------------------------
+// You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
+// files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
+// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
+// Call IMGUI_CHECKVERSION() from your .cpp file to verify that the data structures your files are using are matching the ones imgui.cpp is using.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+//---- Define assertion handler. Defaults to calling assert().
+// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+//#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
+//#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
+
+//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
+// Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
+// DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
+// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
+//#define IMGUI_API __declspec( dllexport )
+//#define IMGUI_API __declspec( dllimport )
+
+//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to clean your code of obsolete function/names.
+//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+//#define IMGUI_DISABLE_OBSOLETE_KEYIO                      // 1.87+ disable legacy io.KeyMap[]+io.KeysDown[] in favor io.AddKeyEvent(). This is automatically done by IMGUI_DISABLE_OBSOLETE_FUNCTIONS.
+
+//---- Disable all of Dear ImGui or don't implement standard windows/tools.
+// It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
+//#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
+//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
+//#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.
+
+//---- Don't implement some functions to reduce linkage requirements.
+//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
+//#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS          // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
+//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
+//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, IME).
+//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
+//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
+//#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
+//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
+//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
+//#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available
+
+//---- Include imgui_user.h at the end of imgui.h as a convenience
+// May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
+//#define IMGUI_INCLUDE_IMGUI_USER_H
+//#define IMGUI_USER_H_FILENAME         "my_folder/my_imgui_user.h"
+
+//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
+//#define IMGUI_USE_BGRA_PACKED_COLOR
+
+//---- Use 32-bit for ImWchar (default is 16-bit) to support Unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
+//#define IMGUI_USE_WCHAR32
+
+//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
+// By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
+//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
+//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
+//#define IMGUI_STB_SPRINTF_FILENAME    "my_folder/stb_sprintf.h"    // only used if IMGUI_USE_STB_SPRINTF is defined.
+//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION                   // only disabled if IMGUI_USE_STB_SPRINTF is defined.
+
+//---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
+// Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by stb_sprintf.h.
+//#define IMGUI_USE_STB_SPRINTF
+
+//---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
+// Requires FreeType headers to be available in the include path. Requires program to be compiled with 'misc/freetype/imgui_freetype.cpp' (in this repository) + the FreeType library (not provided).
+// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
+//#define IMGUI_ENABLE_FREETYPE
+
+//---- Use FreeType+lunasvg library to render OpenType SVG fonts (SVGinOT)
+// Requires lunasvg headers to be available in the include path + program to be linked with the lunasvg library (not provided).
+// Only works in combination with IMGUI_ENABLE_FREETYPE.
+// (implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
+//#define IMGUI_ENABLE_FREETYPE_LUNASVG
+
+//---- Use stb_truetype to build and rasterize the font atlas (default)
+// The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
+//#define IMGUI_ENABLE_STB_TRUETYPE
+
+//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
+// This will be inlined as part of ImVec2 and ImVec4 class declarations.
+/*
+#define IM_VEC2_CLASS_EXTRA                                                     \
+        constexpr ImVec2(const MyVec2& f) : x(f.x), y(f.y) {}                   \
+        operator MyVec2() const { return MyVec2(x,y); }
+
+#define IM_VEC4_CLASS_EXTRA                                                     \
+        constexpr ImVec4(const MyVec4& f) : x(f.x), y(f.y), z(f.z), w(f.w) {}   \
+        operator MyVec4() const { return MyVec4(x,y,z,w); }
+*/
+//---- ...Or use Dear ImGui's own very basic math operators.
+//#define IMGUI_DEFINE_MATH_OPERATORS
+
+//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
+// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
+// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
+// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
+//#define ImDrawIdx unsigned int
+
+//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
+//struct ImDrawList;
+//struct ImDrawCmd;
+//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
+//#define ImDrawCallback MyImDrawCallback
+
+//---- Debug Tools: Macro to break in Debugger (we provide a default implementation of this in the codebase)
+// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
+//#define IM_DEBUG_BREAK  IM_ASSERT(0)
+//#define IM_DEBUG_BREAK  __debugbreak()
+
+//---- Debug Tools: Enable slower asserts
+//#define IMGUI_DEBUG_PARANOID
+
+//---- Tip: You can add extra functions within the ImGui:: namespace from anywhere (e.g. your own sources/header files)
+/*
+namespace ImGui
+{
+    void MyFunction(const char* name, MyMatrix44* mtx);
+}
+*/

source/engine/thirdparty/imgui/imstb_rectpack.h

@@ -0,0 +1,627 @@
+// [DEAR IMGUI]
+// This is a slightly modified version of stb_rect_pack.h 1.01.
+// Grep for [DEAR IMGUI] to find the changes.
+// 
+// stb_rect_pack.h - v1.01 - public domain - rectangle packing
+// Sean Barrett 2014
+//
+// Useful for e.g. packing rectangular textures into an atlas.
+// Does not do rotation.
+//
+// Before #including,
+//
+//    #define STB_RECT_PACK_IMPLEMENTATION
+//
+// in the file that you want to have the implementation.
+//
+// Not necessarily the awesomest packing method, but better than
+// the totally naive one in stb_truetype (which is primarily what
+// this is meant to replace).
+//
+// Has only had a few tests run, may have issues.
+//
+// More docs to come.
+//
+// No memory allocations; uses qsort() and assert() from stdlib.
+// Can override those by defining STBRP_SORT and STBRP_ASSERT.
+//
+// This library currently uses the Skyline Bottom-Left algorithm.
+//
+// Please note: better rectangle packers are welcome! Please
+// implement them to the same API, but with a different init
+// function.
+//
+// Credits
+//
+//  Library
+//    Sean Barrett
+//  Minor features
+//    Martins Mozeiko
+//    github:IntellectualKitty
+//
+//  Bugfixes / warning fixes
+//    Jeremy Jaussaud
+//    Fabian Giesen
+//
+// Version history:
+//
+//     1.01  (2021-07-11)  always use large rect mode, expose STBRP__MAXVAL in public section
+//     1.00  (2019-02-25)  avoid small space waste; gracefully fail too-wide rectangles
+//     0.99  (2019-02-07)  warning fixes
+//     0.11  (2017-03-03)  return packing success/fail result
+//     0.10  (2016-10-25)  remove cast-away-const to avoid warnings
+//     0.09  (2016-08-27)  fix compiler warnings
+//     0.08  (2015-09-13)  really fix bug with empty rects (w=0 or h=0)
+//     0.07  (2015-09-13)  fix bug with empty rects (w=0 or h=0)
+//     0.06  (2015-04-15)  added STBRP_SORT to allow replacing qsort
+//     0.05:  added STBRP_ASSERT to allow replacing assert
+//     0.04:  fixed minor bug in STBRP_LARGE_RECTS support
+//     0.01:  initial release
+//
+// LICENSE
+//
+//   See end of file for license information.
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//       INCLUDE SECTION
+//
+
+#ifndef STB_INCLUDE_STB_RECT_PACK_H
+#define STB_INCLUDE_STB_RECT_PACK_H
+
+#define STB_RECT_PACK_VERSION  1
+
+#ifdef STBRP_STATIC
+#define STBRP_DEF static
+#else
+#define STBRP_DEF extern
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct stbrp_context stbrp_context;
+typedef struct stbrp_node    stbrp_node;
+typedef struct stbrp_rect    stbrp_rect;
+
+typedef int            stbrp_coord;
+
+#define STBRP__MAXVAL  0x7fffffff
+// Mostly for internal use, but this is the maximum supported coordinate value.
+
+STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
+// Assign packed locations to rectangles. The rectangles are of type
+// 'stbrp_rect' defined below, stored in the array 'rects', and there
+// are 'num_rects' many of them.
+//
+// Rectangles which are successfully packed have the 'was_packed' flag
+// set to a non-zero value and 'x' and 'y' store the minimum location
+// on each axis (i.e. bottom-left in cartesian coordinates, top-left
+// if you imagine y increasing downwards). Rectangles which do not fit
+// have the 'was_packed' flag set to 0.
+//
+// You should not try to access the 'rects' array from another thread
+// while this function is running, as the function temporarily reorders
+// the array while it executes.
+//
+// To pack into another rectangle, you need to call stbrp_init_target
+// again. To continue packing into the same rectangle, you can call
+// this function again. Calling this multiple times with multiple rect
+// arrays will probably produce worse packing results than calling it
+// a single time with the full rectangle array, but the option is
+// available.
+//
+// The function returns 1 if all of the rectangles were successfully
+// packed and 0 otherwise.
+
+struct stbrp_rect
+{
+   // reserved for your use:
+   int            id;
+
+   // input:
+   stbrp_coord    w, h;
+
+   // output:
+   stbrp_coord    x, y;
+   int            was_packed;  // non-zero if valid packing
+
+}; // 16 bytes, nominally
+
+
+STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
+// Initialize a rectangle packer to:
+//    pack a rectangle that is 'width' by 'height' in dimensions
+//    using temporary storage provided by the array 'nodes', which is 'num_nodes' long
+//
+// You must call this function every time you start packing into a new target.
+//
+// There is no "shutdown" function. The 'nodes' memory must stay valid for
+// the following stbrp_pack_rects() call (or calls), but can be freed after
+// the call (or calls) finish.
+//
+// Note: to guarantee best results, either:
+//       1. make sure 'num_nodes' >= 'width'
+//   or  2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
+//
+// If you don't do either of the above things, widths will be quantized to multiples
+// of small integers to guarantee the algorithm doesn't run out of temporary storage.
+//
+// If you do #2, then the non-quantized algorithm will be used, but the algorithm
+// may run out of temporary storage and be unable to pack some rectangles.
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
+// Optionally call this function after init but before doing any packing to
+// change the handling of the out-of-temp-memory scenario, described above.
+// If you call init again, this will be reset to the default (false).
+
+
+STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
+// Optionally select which packing heuristic the library should use. Different
+// heuristics will produce better/worse results for different data sets.
+// If you call init again, this will be reset to the default.
+
+enum
+{
+   STBRP_HEURISTIC_Skyline_default=0,
+   STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
+   STBRP_HEURISTIC_Skyline_BF_sortHeight
+};
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// the details of the following structures don't matter to you, but they must
+// be visible so you can handle the memory allocations for them
+
+struct stbrp_node
+{
+   stbrp_coord  x,y;
+   stbrp_node  *next;
+};
+
+struct stbrp_context
+{
+   int width;
+   int height;
+   int align;
+   int init_mode;
+   int heuristic;
+   int num_nodes;
+   stbrp_node *active_head;
+   stbrp_node *free_head;
+   stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//     IMPLEMENTATION SECTION
+//
+
+#ifdef STB_RECT_PACK_IMPLEMENTATION
+#ifndef STBRP_SORT
+#include <stdlib.h>
+#define STBRP_SORT qsort
+#endif
+
+#ifndef STBRP_ASSERT
+#include <assert.h>
+#define STBRP_ASSERT assert
+#endif
+
+#ifdef _MSC_VER
+#define STBRP__NOTUSED(v)  (void)(v)
+#define STBRP__CDECL       __cdecl
+#else
+#define STBRP__NOTUSED(v)  (void)sizeof(v)
+#define STBRP__CDECL
+#endif
+
+enum
+{
+   STBRP__INIT_skyline = 1
+};
+
+STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
+{
+   switch (context->init_mode) {
+      case STBRP__INIT_skyline:
+         STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
+         context->heuristic = heuristic;
+         break;
+      default:
+         STBRP_ASSERT(0);
+   }
+}
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
+{
+   if (allow_out_of_mem)
+      // if it's ok to run out of memory, then don't bother aligning them;
+      // this gives better packing, but may fail due to OOM (even though
+      // the rectangles easily fit). @TODO a smarter approach would be to only
+      // quantize once we've hit OOM, then we could get rid of this parameter.
+      context->align = 1;
+   else {
+      // if it's not ok to run out of memory, then quantize the widths
+      // so that num_nodes is always enough nodes.
+      //
+      // I.e. num_nodes * align >= width
+      //                  align >= width / num_nodes
+      //                  align = ceil(width/num_nodes)
+
+      context->align = (context->width + context->num_nodes-1) / context->num_nodes;
+   }
+}
+
+STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
+{
+   int i;
+
+   for (i=0; i < num_nodes-1; ++i)
+      nodes[i].next = &nodes[i+1];
+   nodes[i].next = NULL;
+   context->init_mode = STBRP__INIT_skyline;
+   context->heuristic = STBRP_HEURISTIC_Skyline_default;
+   context->free_head = &nodes[0];
+   context->active_head = &context->extra[0];
+   context->width = width;
+   context->height = height;
+   context->num_nodes = num_nodes;
+   stbrp_setup_allow_out_of_mem(context, 0);
+
+   // node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
+   context->extra[0].x = 0;
+   context->extra[0].y = 0;
+   context->extra[0].next = &context->extra[1];
+   context->extra[1].x = (stbrp_coord) width;
+   context->extra[1].y = (1<<30);
+   context->extra[1].next = NULL;
+}
+
+// find minimum y position if it starts at x1
+static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
+{
+   stbrp_node *node = first;
+   int x1 = x0 + width;
+   int min_y, visited_width, waste_area;
+
+   STBRP__NOTUSED(c);
+
+   STBRP_ASSERT(first->x <= x0);
+
+   #if 0
+   // skip in case we're past the node
+   while (node->next->x <= x0)
+      ++node;
+   #else
+   STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
+   #endif
+
+   STBRP_ASSERT(node->x <= x0);
+
+   min_y = 0;
+   waste_area = 0;
+   visited_width = 0;
+   while (node->x < x1) {
+      if (node->y > min_y) {
+         // raise min_y higher.
+         // we've accounted for all waste up to min_y,
+         // but we'll now add more waste for everything we've visted
+         waste_area += visited_width * (node->y - min_y);
+         min_y = node->y;
+         // the first time through, visited_width might be reduced
+         if (node->x < x0)
+            visited_width += node->next->x - x0;
+         else
+            visited_width += node->next->x - node->x;
+      } else {
+         // add waste area
+         int under_width = node->next->x - node->x;
+         if (under_width + visited_width > width)
+            under_width = width - visited_width;
+         waste_area += under_width * (min_y - node->y);
+         visited_width += under_width;
+      }
+      node = node->next;
+   }
+
+   *pwaste = waste_area;
+   return min_y;
+}
+
+typedef struct
+{
+   int x,y;
+   stbrp_node **prev_link;
+} stbrp__findresult;
+
+static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
+{
+   int best_waste = (1<<30), best_x, best_y = (1 << 30);
+   stbrp__findresult fr;
+   stbrp_node **prev, *node, *tail, **best = NULL;
+
+   // align to multiple of c->align
+   width = (width + c->align - 1);
+   width -= width % c->align;
+   STBRP_ASSERT(width % c->align == 0);
+
+   // if it can't possibly fit, bail immediately
+   if (width > c->width || height > c->height) {
+      fr.prev_link = NULL;
+      fr.x = fr.y = 0;
+      return fr;
+   }
+
+   node = c->active_head;
+   prev = &c->active_head;
+   while (node->x + width <= c->width) {
+      int y,waste;
+      y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
+      if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
+         // bottom left
+         if (y < best_y) {
+            best_y = y;
+            best = prev;
+         }
+      } else {
+         // best-fit
+         if (y + height <= c->height) {
+            // can only use it if it first vertically
+            if (y < best_y || (y == best_y && waste < best_waste)) {
+               best_y = y;
+               best_waste = waste;
+               best = prev;
+            }
+         }
+      }
+      prev = &node->next;
+      node = node->next;
+   }
+
+   best_x = (best == NULL) ? 0 : (*best)->x;
+
+   // if doing best-fit (BF), we also have to try aligning right edge to each node position
+   //
+   // e.g, if fitting
+   //
+   //     ____________________
+   //    |____________________|
+   //
+   //            into
+   //
+   //   |                         |
+   //   |             ____________|
+   //   |____________|
+   //
+   // then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
+   //
+   // This makes BF take about 2x the time
+
+   if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
+      tail = c->active_head;
+      node = c->active_head;
+      prev = &c->active_head;
+      // find first node that's admissible
+      while (tail->x < width)
+         tail = tail->next;
+      while (tail) {
+         int xpos = tail->x - width;
+         int y,waste;
+         STBRP_ASSERT(xpos >= 0);
+         // find the left position that matches this
+         while (node->next->x <= xpos) {
+            prev = &node->next;
+            node = node->next;
+         }
+         STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
+         y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
+         if (y + height <= c->height) {
+            if (y <= best_y) {
+               if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
+                  best_x = xpos;
+                  //STBRP_ASSERT(y <= best_y); [DEAR IMGUI]
+                  best_y = y;
+                  best_waste = waste;
+                  best = prev;
+               }
+            }
+         }
+         tail = tail->next;
+      }
+   }
+
+   fr.prev_link = best;
+   fr.x = best_x;
+   fr.y = best_y;
+   return fr;
+}
+
+static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
+{
+   // find best position according to heuristic
+   stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
+   stbrp_node *node, *cur;
+
+   // bail if:
+   //    1. it failed
+   //    2. the best node doesn't fit (we don't always check this)
+   //    3. we're out of memory
+   if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
+      res.prev_link = NULL;
+      return res;
+   }
+
+   // on success, create new node
+   node = context->free_head;
+   node->x = (stbrp_coord) res.x;
+   node->y = (stbrp_coord) (res.y + height);
+
+   context->free_head = node->next;
+
+   // insert the new node into the right starting point, and
+   // let 'cur' point to the remaining nodes needing to be
+   // stiched back in
+
+   cur = *res.prev_link;
+   if (cur->x < res.x) {
+      // preserve the existing one, so start testing with the next one
+      stbrp_node *next = cur->next;
+      cur->next = node;
+      cur = next;
+   } else {
+      *res.prev_link = node;
+   }
+
+   // from here, traverse cur and free the nodes, until we get to one
+   // that shouldn't be freed
+   while (cur->next && cur->next->x <= res.x + width) {
+      stbrp_node *next = cur->next;
+      // move the current node to the free list
+      cur->next = context->free_head;
+      context->free_head = cur;
+      cur = next;
+   }
+
+   // stitch the list back in
+   node->next = cur;
+
+   if (cur->x < res.x + width)
+      cur->x = (stbrp_coord) (res.x + width);
+
+#ifdef _DEBUG
+   cur = context->active_head;
+   while (cur->x < context->width) {
+      STBRP_ASSERT(cur->x < cur->next->x);
+      cur = cur->next;
+   }
+   STBRP_ASSERT(cur->next == NULL);
+
+   {
+      int count=0;
+      cur = context->active_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      cur = context->free_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      STBRP_ASSERT(count == context->num_nodes+2);
+   }
+#endif
+
+   return res;
+}
+
+static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   if (p->h > q->h)
+      return -1;
+   if (p->h < q->h)
+      return  1;
+   return (p->w > q->w) ? -1 : (p->w < q->w);
+}
+
+static int STBRP__CDECL rect_original_order(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
+}
+
+STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
+{
+   int i, all_rects_packed = 1;
+
+   // we use the 'was_packed' field internally to allow sorting/unsorting
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = i;
+   }
+
+   // sort according to heuristic
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_height_compare);
+
+   for (i=0; i < num_rects; ++i) {
+      if (rects[i].w == 0 || rects[i].h == 0) {
+         rects[i].x = rects[i].y = 0;  // empty rect needs no space
+      } else {
+         stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
+         if (fr.prev_link) {
+            rects[i].x = (stbrp_coord) fr.x;
+            rects[i].y = (stbrp_coord) fr.y;
+         } else {
+            rects[i].x = rects[i].y = STBRP__MAXVAL;
+         }
+      }
+   }
+
+   // unsort
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
+
+   // set was_packed flags and all_rects_packed status
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
+      if (!rects[i].was_packed)
+         all_rects_packed = 0;
+   }
+
+   // return the all_rects_packed status
+   return all_rects_packed;
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+This software is available under 2 licenses -- choose whichever you prefer.
+------------------------------------------------------------------------------
+ALTERNATIVE A - MIT License
+Copyright (c) 2017 Sean Barrett
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+------------------------------------------------------------------------------
+ALTERNATIVE B - Public Domain (www.unlicense.org)
+This is free and unencumbered software released into the public domain.
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
+software, either in source code form or as a compiled binary, for any purpose,
+commercial or non-commercial, and by any means.
+In jurisdictions that recognize copyright laws, the author or authors of this
+software dedicate any and all copyright interest in the software to the public
+domain. We make this dedication for the benefit of the public at large and to
+the detriment of our heirs and successors. We intend this dedication to be an
+overt act of relinquishment in perpetuity of all present and future rights to
+this software under copyright law.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+------------------------------------------------------------------------------
+*/

source/engine/thirdparty/sokol/sokol_app.h

@@ -5765,16 +5765,28 @@ _SOKOL_PRIVATE void _sapp_emsc_wgpu_request_adapter_cb(WGPURequestAdapterStatus
     SOKOL_ASSERT(adapter);
     _sapp.wgpu.adapter = adapter;
     size_t cur_feature_index = 1;
-    WGPUFeatureName requiredFeatures[8] = {
+    #define _SAPP_WGPU_MAX_REQUESTED_FEATURES (8)
+    WGPUFeatureName requiredFeatures[_SAPP_WGPU_MAX_REQUESTED_FEATURES] = {
         WGPUFeatureName_Depth32FloatStencil8,
     };
     // check for optional features we're interested in
-    // FIXME: ASTC texture compression
     if (wgpuAdapterHasFeature(adapter, WGPUFeatureName_TextureCompressionBC)) {
+        SOKOL_ASSERT(cur_feature_index < _SAPP_WGPU_MAX_REQUESTED_FEATURES);
         requiredFeatures[cur_feature_index++] = WGPUFeatureName_TextureCompressionBC;
-    } else if (wgpuAdapterHasFeature(adapter, WGPUFeatureName_TextureCompressionETC2)) {
+    }
+    if (wgpuAdapterHasFeature(adapter, WGPUFeatureName_TextureCompressionETC2)) {
+        SOKOL_ASSERT(cur_feature_index < _SAPP_WGPU_MAX_REQUESTED_FEATURES);
         requiredFeatures[cur_feature_index++] = WGPUFeatureName_TextureCompressionETC2;
     }
+    if (wgpuAdapterHasFeature(adapter, WGPUFeatureName_TextureCompressionASTC)) {
+        SOKOL_ASSERT(cur_feature_index < _SAPP_WGPU_MAX_REQUESTED_FEATURES);
+        requiredFeatures[cur_feature_index++] = WGPUFeatureName_TextureCompressionASTC;
+    }
+    if (wgpuAdapterHasFeature(adapter, WGPUFeatureName_Float32Filterable)) {
+        SOKOL_ASSERT(cur_feature_index < _SAPP_WGPU_MAX_REQUESTED_FEATURES);
+        requiredFeatures[cur_feature_index++] = WGPUFeatureName_Float32Filterable;
+    }
+    #undef _SAPP_WGPU_MAX_REQUESTED_FEATURES
 
     WGPUDeviceDescriptor dev_desc;
     _sapp_clear(&dev_desc, sizeof(dev_desc));

source/engine/thirdparty/sokol/sokol_audio.h

@@ -39,6 +39,7 @@
 
     - on macOS: AudioToolbox
     - on iOS: AudioToolbox, AVFoundation
+    - on FreeBSD: asound
     - on Linux: asound
     - on Android: link with OpenSLES or aaudio
     - on Windows with MSVC or Clang toolchain: no action needed, libs are defined in-source via pragma-comment-lib
@@ -51,6 +52,7 @@
 
     - Windows: WASAPI
     - Linux: ALSA
+    - FreeBSD: ALSA
     - macOS: CoreAudio
     - iOS: CoreAudio+AVAudioSession
     - emscripten: WebAudio with ScriptProcessorNode
@@ -780,7 +782,9 @@ inline void saudio_setup(const saudio_desc& desc) { return saudio_setup(&desc);
         #include "aaudio/AAudio.h"
     #endif
 #elif defined(_SAUDIO_LINUX)
+    #if !defined(__FreeBSD__)
         #include <alloca.h>
+    #endif
     #define _SAUDIO_PTHREADS (1)
     #include <pthread.h>
     #define ALSA_PCM_NEW_HW_PARAMS_API

source/engine/thirdparty/sokol/sokol_fetch.h

@@ -1071,14 +1071,11 @@ typedef struct sfetch_response_t {
     sfetch_range_t buffer;          // the user-provided buffer which holds the fetched data
 } sfetch_response_t;
 
-/* response callback function signature */
-typedef void(*sfetch_callback_t)(const sfetch_response_t*);
-
 /* request parameters passed to sfetch_send() */
 typedef struct sfetch_request_t {
     uint32_t channel;                                // index of channel this request is assigned to (default: 0)
     const char* path;                                // filesystem path or HTTP URL (required)
-    sfetch_callback_t callback;     // response callback function pointer (required)
+    void (*callback) (const sfetch_response_t*);     // response callback function pointer (required)
     uint32_t chunk_size;                             // number of bytes to load per stream-block (optional)
     sfetch_range_t buffer;                           // a memory buffer where the data will be loaded into (optional)
     sfetch_range_t user_data;                        // ptr/size of a POD user data block which will be memcpy'd (optional)
@@ -1302,7 +1299,7 @@ typedef struct {
     uint32_t channel;
     uint32_t lane;
     uint32_t chunk_size;
-    sfetch_callback_t callback;
+    void (*callback) (const sfetch_response_t*);
     sfetch_range_t buffer;
 
     /* updated by IO-thread, off-limits to user thread */

source/engine/thirdparty/sokol/sokol_gfx.h

@@ -1796,8 +1796,10 @@ typedef enum sg_pixel_format {
     SG_PIXELFORMAT_ETC2_RGB8A1,
     SG_PIXELFORMAT_ETC2_RGBA8,
     SG_PIXELFORMAT_ETC2_SRGB8A8,
-    SG_PIXELFORMAT_ETC2_RG11,
-    SG_PIXELFORMAT_ETC2_RG11SN,
+    SG_PIXELFORMAT_EAC_R11,
+    SG_PIXELFORMAT_EAC_R11SN,
+    SG_PIXELFORMAT_EAC_RG11,
+    SG_PIXELFORMAT_EAC_RG11SN,
 
     SG_PIXELFORMAT_ASTC_4x4_RGBA,
     SG_PIXELFORMAT_ASTC_4x4_SRGBA,
@@ -4844,6 +4846,12 @@ inline int sg_append_buffer(sg_buffer buf_id, const sg_range& data) { return sg_
     #ifndef GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
     #define GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9276
     #endif
+    #ifndef GL_COMPRESSED_R11_EAC
+    #define GL_COMPRESSED_R11_EAC 0x9270
+    #endif
+    #ifndef GL_COMPRESSED_SIGNED_R11_EAC
+    #define GL_COMPRESSED_SIGNED_R11_EAC 0x9271
+    #endif
     #ifndef GL_COMPRESSED_RG11_EAC
     #define GL_COMPRESSED_RG11_EAC 0x9272
     #endif
@@ -6218,8 +6226,10 @@ _SOKOL_PRIVATE bool _sg_is_compressed_pixel_format(sg_pixel_format fmt) {
         case SG_PIXELFORMAT_ETC2_RGB8A1:
         case SG_PIXELFORMAT_ETC2_RGBA8:
         case SG_PIXELFORMAT_ETC2_SRGB8A8:
-        case SG_PIXELFORMAT_ETC2_RG11:
-        case SG_PIXELFORMAT_ETC2_RG11SN:
+        case SG_PIXELFORMAT_EAC_R11:
+        case SG_PIXELFORMAT_EAC_R11SN:
+        case SG_PIXELFORMAT_EAC_RG11:
+        case SG_PIXELFORMAT_EAC_RG11SN:
         case SG_PIXELFORMAT_ASTC_4x4_RGBA:
         case SG_PIXELFORMAT_ASTC_4x4_SRGBA:
             return true;
@@ -6347,6 +6357,8 @@ _SOKOL_PRIVATE int _sg_row_pitch(sg_pixel_format fmt, int width, int row_align)
         case SG_PIXELFORMAT_ETC2_RGB8:
         case SG_PIXELFORMAT_ETC2_SRGB8:
         case SG_PIXELFORMAT_ETC2_RGB8A1:
+        case SG_PIXELFORMAT_EAC_R11:
+        case SG_PIXELFORMAT_EAC_R11SN:
             pitch = ((width + 3) / 4) * 8;
             pitch = pitch < 8 ? 8 : pitch;
             break;
@@ -6361,8 +6373,8 @@ _SOKOL_PRIVATE int _sg_row_pitch(sg_pixel_format fmt, int width, int row_align)
         case SG_PIXELFORMAT_BC7_SRGBA:
         case SG_PIXELFORMAT_ETC2_RGBA8:
         case SG_PIXELFORMAT_ETC2_SRGB8A8:
-        case SG_PIXELFORMAT_ETC2_RG11:
-        case SG_PIXELFORMAT_ETC2_RG11SN:
+        case SG_PIXELFORMAT_EAC_RG11:
+        case SG_PIXELFORMAT_EAC_RG11SN:
         case SG_PIXELFORMAT_ASTC_4x4_RGBA:
         case SG_PIXELFORMAT_ASTC_4x4_SRGBA:
             pitch = ((width + 3) / 4) * 16;
@@ -6396,8 +6408,10 @@ _SOKOL_PRIVATE int _sg_num_rows(sg_pixel_format fmt, int height) {
         case SG_PIXELFORMAT_ETC2_RGB8A1:
         case SG_PIXELFORMAT_ETC2_RGBA8:
         case SG_PIXELFORMAT_ETC2_SRGB8A8:
-        case SG_PIXELFORMAT_ETC2_RG11:
-        case SG_PIXELFORMAT_ETC2_RG11SN:
+        case SG_PIXELFORMAT_EAC_R11:
+        case SG_PIXELFORMAT_EAC_R11SN:
+        case SG_PIXELFORMAT_EAC_RG11:
+        case SG_PIXELFORMAT_EAC_RG11SN:
         case SG_PIXELFORMAT_BC2_RGBA:
         case SG_PIXELFORMAT_BC3_RGBA:
         case SG_PIXELFORMAT_BC3_SRGBA:
@@ -6469,6 +6483,12 @@ _SOKOL_PRIVATE void _sg_pixelformat_sr(_sg_pixelformat_info_t* pfi) {
     pfi->render = true;
 }
 
+_SOKOL_PRIVATE void _sg_pixelformat_sfr(_sg_pixelformat_info_t* pfi) {
+    pfi->sample = true;
+    pfi->filter = true;
+    pfi->render = true;
+}
+
 _SOKOL_PRIVATE void _sg_pixelformat_srmd(_sg_pixelformat_info_t* pfi) {
     pfi->sample = true;
     pfi->render = true;
@@ -7319,9 +7339,13 @@ _SOKOL_PRIVATE GLenum _sg_gl_teximage_format(sg_pixel_format fmt) {
             return GL_COMPRESSED_RGBA8_ETC2_EAC;
         case SG_PIXELFORMAT_ETC2_SRGB8A8:
             return GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC;
-        case SG_PIXELFORMAT_ETC2_RG11:
+        case SG_PIXELFORMAT_EAC_R11:
+            return GL_COMPRESSED_R11_EAC;
+        case SG_PIXELFORMAT_EAC_R11SN:
+            return GL_COMPRESSED_SIGNED_R11_EAC;
+        case SG_PIXELFORMAT_EAC_RG11:
             return GL_COMPRESSED_RG11_EAC;
-        case SG_PIXELFORMAT_ETC2_RG11SN:
+        case SG_PIXELFORMAT_EAC_RG11SN:
             return GL_COMPRESSED_SIGNED_RG11_EAC;
         case SG_PIXELFORMAT_ASTC_4x4_RGBA:
             return GL_COMPRESSED_RGBA_ASTC_4x4_KHR;
@@ -7403,8 +7427,10 @@ _SOKOL_PRIVATE GLenum _sg_gl_teximage_internal_format(sg_pixel_format fmt) {
         case SG_PIXELFORMAT_ETC2_RGB8A1:        return GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
         case SG_PIXELFORMAT_ETC2_RGBA8:         return GL_COMPRESSED_RGBA8_ETC2_EAC;
         case SG_PIXELFORMAT_ETC2_SRGB8A8:       return GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC;
-        case SG_PIXELFORMAT_ETC2_RG11:          return GL_COMPRESSED_RG11_EAC;
-        case SG_PIXELFORMAT_ETC2_RG11SN:        return GL_COMPRESSED_SIGNED_RG11_EAC;
+        case SG_PIXELFORMAT_EAC_R11:            return GL_COMPRESSED_R11_EAC;
+        case SG_PIXELFORMAT_EAC_R11SN:          return GL_COMPRESSED_SIGNED_R11_EAC;
+        case SG_PIXELFORMAT_EAC_RG11:           return GL_COMPRESSED_RG11_EAC;
+        case SG_PIXELFORMAT_EAC_RG11SN:         return GL_COMPRESSED_SIGNED_RG11_EAC;
         case SG_PIXELFORMAT_ASTC_4x4_RGBA:      return GL_COMPRESSED_RGBA_ASTC_4x4_KHR;
         case SG_PIXELFORMAT_ASTC_4x4_SRGBA:     return GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR;
         default: SOKOL_UNREACHABLE; return 0;
@@ -7549,8 +7575,10 @@ _SOKOL_PRIVATE void _sg_gl_init_pixelformats_etc2(void) {
     _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RGB8A1]);
     _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RGBA8]);
     _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_SRGB8A8]);
-    _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RG11]);
-    _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RG11SN]);
+    _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_R11]);
+    _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_R11SN]);
+    _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_RG11]);
+    _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_RG11SN]);
 }
 
 _SOKOL_PRIVATE void _sg_gl_init_pixelformats_astc(void) {
@@ -9341,7 +9369,6 @@ _SOKOL_PRIVATE void _sg_gl_apply_uniforms(sg_shader_stage stage_index, int ub_in
         if (u->gl_loc == -1) {
             continue;
         }
-
         _sg_stats_add(gl.num_uniform, 1);
         GLfloat* fptr = (GLfloat*) (((uint8_t*)data->ptr) + u->offset);
         GLint* iptr = (GLint*) (((uint8_t*)data->ptr) + u->offset);
@@ -11639,8 +11666,10 @@ _SOKOL_PRIVATE MTLPixelFormat _sg_mtl_pixel_format(sg_pixel_format fmt) {
         case SG_PIXELFORMAT_ETC2_RGB8A1:            return MTLPixelFormatETC2_RGB8A1;
         case SG_PIXELFORMAT_ETC2_RGBA8:             return MTLPixelFormatEAC_RGBA8;
         case SG_PIXELFORMAT_ETC2_SRGB8A8:           return MTLPixelFormatEAC_RGBA8_sRGB;
-        case SG_PIXELFORMAT_ETC2_RG11:              return MTLPixelFormatEAC_RG11Unorm;
-        case SG_PIXELFORMAT_ETC2_RG11SN:            return MTLPixelFormatEAC_RG11Snorm;
+        case SG_PIXELFORMAT_EAC_R11:                return MTLPixelFormatEAC_R11Unorm;
+        case SG_PIXELFORMAT_EAC_R11SN:              return MTLPixelFormatEAC_R11Snorm;
+        case SG_PIXELFORMAT_EAC_RG11:               return MTLPixelFormatEAC_RG11Unorm;
+        case SG_PIXELFORMAT_EAC_RG11SN:             return MTLPixelFormatEAC_RG11Snorm;
         case SG_PIXELFORMAT_ASTC_4x4_RGBA:          return MTLPixelFormatASTC_4x4_LDR;
         case SG_PIXELFORMAT_ASTC_4x4_SRGBA:         return MTLPixelFormatASTC_4x4_sRGB;
         #endif
@@ -12114,8 +12143,10 @@ _SOKOL_PRIVATE void _sg_mtl_init_caps(void) {
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RGB8A1]);
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RGBA8]);
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_SRGB8A8]);
-        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RG11]);
-        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RG11SN]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_R11]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_R11SN]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_RG11]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_RG11SN]);
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ASTC_4x4_RGBA]);
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ASTC_4x4_SRGBA]);
 
@@ -13519,8 +13550,10 @@ _SOKOL_PRIVATE WGPUTextureFormat _sg_wgpu_textureformat(sg_pixel_format p) {
         case SG_PIXELFORMAT_ETC2_RGBA8:     return WGPUTextureFormat_ETC2RGBA8Unorm;
         case SG_PIXELFORMAT_ETC2_SRGB8:     return WGPUTextureFormat_ETC2RGB8UnormSrgb;
         case SG_PIXELFORMAT_ETC2_SRGB8A8:   return WGPUTextureFormat_ETC2RGBA8UnormSrgb;
-        case SG_PIXELFORMAT_ETC2_RG11:      return WGPUTextureFormat_EACR11Unorm;
-        case SG_PIXELFORMAT_ETC2_RG11SN:    return WGPUTextureFormat_EACR11Snorm;
+        case SG_PIXELFORMAT_EAC_R11:        return WGPUTextureFormat_EACR11Unorm;
+        case SG_PIXELFORMAT_EAC_R11SN:      return WGPUTextureFormat_EACR11Snorm;
+        case SG_PIXELFORMAT_EAC_RG11:       return WGPUTextureFormat_EACRG11Unorm;
+        case SG_PIXELFORMAT_EAC_RG11SN:     return WGPUTextureFormat_EACRG11Snorm;
         case SG_PIXELFORMAT_RGB9E5:         return WGPUTextureFormat_RGB9E5Ufloat;
         case SG_PIXELFORMAT_ASTC_4x4_RGBA:  return WGPUTextureFormat_ASTC4x4Unorm;
         case SG_PIXELFORMAT_ASTC_4x4_SRGBA: return WGPUTextureFormat_ASTC4x4UnormSrgb;
@@ -13729,10 +13762,15 @@ _SOKOL_PRIVATE void _sg_wgpu_init_caps(void) {
     _sg_pixelformat_sr(&_sg.formats[SG_PIXELFORMAT_RGBA32UI]);
     _sg_pixelformat_sr(&_sg.formats[SG_PIXELFORMAT_RGBA32SI]);
 
-    // FIXME: can be made filterable with extension
+    if (wgpuDeviceHasFeature(_sg.wgpu.dev, WGPUFeatureName_Float32Filterable)) {
+        _sg_pixelformat_sfr(&_sg.formats[SG_PIXELFORMAT_R32F]);
+        _sg_pixelformat_sfr(&_sg.formats[SG_PIXELFORMAT_RG32F]);
+        _sg_pixelformat_sfr(&_sg.formats[SG_PIXELFORMAT_RGBA32F]);
+    } else {
         _sg_pixelformat_sr(&_sg.formats[SG_PIXELFORMAT_R32F]);
         _sg_pixelformat_sr(&_sg.formats[SG_PIXELFORMAT_RG32F]);
         _sg_pixelformat_sr(&_sg.formats[SG_PIXELFORMAT_RGBA32F]);
+    }
 
     _sg_pixelformat_srmd(&_sg.formats[SG_PIXELFORMAT_DEPTH]);
     _sg_pixelformat_srmd(&_sg.formats[SG_PIXELFORMAT_DEPTH_STENCIL]);
@@ -13759,8 +13797,10 @@ _SOKOL_PRIVATE void _sg_wgpu_init_caps(void) {
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RGB8A1]);
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RGBA8]);
         _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_SRGB8A8]);
-        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RG11]);
-        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_ETC2_RG11SN]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_R11]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_R11SN]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_RG11]);
+        _sg_pixelformat_sf(&_sg.formats[SG_PIXELFORMAT_EAC_RG11SN]);
     }
 
     if (wgpuDeviceHasFeature(_sg.wgpu.dev, WGPUFeatureName_TextureCompressionASTC)) {

source/engine/thirdparty/sokol/util/sokol_memtrack.h

@@ -0,0 +1,167 @@
+#if defined(SOKOL_IMPL) && !defined(SOKOL_MEMTRACK_IMPL)
+#define SOKOL_MEMTRACK_IMPL
+#endif
+#ifndef SOKOL_MEMTRACK_INCLUDED
+/*
+    sokol_memtrack.h -- memory allocation wrapper to track memory usage
+                        of sokol libraries
+
+    Project URL: https://github.com/floooh/sokol
+
+    Optionally provide the following defines with your own implementations:
+
+    SOKOL_MEMTRACK_API_DECL - public function declaration prefix (default: extern)
+    SOKOL_API_DECL      - same as SOKOL_MEMTRACK_API_DECL
+    SOKOL_API_IMPL      - public function implementation prefix (default: -)
+
+    If sokol_memtrack.h is compiled as a DLL, define the following before
+    including the declaration or implementation:
+
+    SOKOL_DLL
+
+    USAGE
+    =====
+    Just plug the malloc/free wrapper functions into the desc.allocator
+    struct provided by most sokol header setup functions:
+
+        sg_setup(&(sg_desc){
+            //...
+            .allocator = {
+                .alloc_fn = smemtrack_alloc,
+                .free_fn = smemtrack_free,
+            }
+        });
+
+    Then call smemtrack_info() to get information about current number
+    of allocations and overall allocation size:
+
+        const smemtrack_info_t info = smemtrack_info();
+        const int num_allocs = info.num_allocs;
+        const int num_bytes = info.num_bytes;
+
+    Note the sokol_memtrack.h can only track allocations issued by
+    the sokol headers, not allocations that happen under the hood
+    in system libraries.
+
+    LICENSE
+    =======
+
+    zlib/libpng license
+
+    Copyright (c) 2018 Andre Weissflog
+
+    This software is provided 'as-is', without any express or implied warranty.
+    In no event will the authors be held liable for any damages arising from the
+    use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+        1. The origin of this software must not be misrepresented; you must not
+        claim that you wrote the original software. If you use this software in a
+        product, an acknowledgment in the product documentation would be
+        appreciated but is not required.
+
+        2. Altered source versions must be plainly marked as such, and must not
+        be misrepresented as being the original software.
+
+        3. This notice may not be removed or altered from any source
+        distribution.
+*/
+#define SOKOL_MEMTRACK_INCLUDED (1)
+#include <stdint.h>
+#include <stddef.h> // size_t
+
+#if defined(SOKOL_API_DECL) && !defined(SOKOL_MEMTRACK_API_DECL)
+#define SOKOL_MEMTRACK_API_DECL SOKOL_API_DECL
+#endif
+#ifndef SOKOL_MEMTRACK_API_DECL
+#if defined(_WIN32) && defined(SOKOL_DLL) && defined(SOKOL_MEMTRACK_IMPL)
+#define SOKOL_MEMTRACK_API_DECL __declspec(dllexport)
+#elif defined(_WIN32) && defined(SOKOL_DLL)
+#define SOKOL_MEMTRACK_API_DECL __declspec(dllimport)
+#else
+#define SOKOL_MEMTRACK_API_DECL extern
+#endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct smemtrack_info_t {
+    int num_allocs;
+    int num_bytes;
+} smemtrack_info_t;
+
+SOKOL_MEMTRACK_API_DECL smemtrack_info_t smemtrack_info(void);
+SOKOL_MEMTRACK_API_DECL void* smemtrack_alloc(size_t size, void* user_data);
+SOKOL_MEMTRACK_API_DECL void smemtrack_free(void* ptr, void* user_data);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+#endif /* SOKOL_MEMTRACK_INCLUDED */
+
+/*=== IMPLEMENTATION =========================================================*/
+#ifdef SOKOL_MEMTRACK_IMPL
+#define SOKOL_MEMTRACK_IMPL_INCLUDED (1)
+#include <stdlib.h> // malloc, free
+#include <string.h> // memset
+
+#ifndef SOKOL_API_IMPL
+    #define SOKOL_API_IMPL
+#endif
+#ifndef SOKOL_DEBUG
+    #ifndef NDEBUG
+        #define SOKOL_DEBUG
+    #endif
+#endif
+#ifndef _SOKOL_PRIVATE
+    #if defined(__GNUC__) || defined(__clang__)
+        #define _SOKOL_PRIVATE __attribute__((unused)) static
+    #else
+        #define _SOKOL_PRIVATE static
+    #endif
+#endif
+
+// per-allocation header used to keep track of the allocation size
+#define _SMEMTRACK_HEADER_SIZE (16)
+
+static struct {
+    smemtrack_info_t state;
+} _smemtrack;
+
+SOKOL_API_IMPL void* smemtrack_alloc(size_t size, void* user_data) {
+    (void)user_data;
+    uint8_t* ptr = (uint8_t*) malloc(size + _SMEMTRACK_HEADER_SIZE);
+    if (ptr) {
+        // store allocation size (for allocation size tracking)
+        *(size_t*)ptr = size;
+        _smemtrack.state.num_allocs++;
+        _smemtrack.state.num_bytes += (int) size;
+        return ptr + _SMEMTRACK_HEADER_SIZE;
+    }
+    else {
+        // allocation failed, return null pointer
+        return ptr;
+    }
+}
+
+SOKOL_API_IMPL void smemtrack_free(void* ptr, void* user_data) {
+    (void)user_data;
+    if (ptr) {
+        uint8_t* alloc_ptr = ((uint8_t*)ptr) - _SMEMTRACK_HEADER_SIZE;
+        size_t size = *(size_t*)alloc_ptr;
+        _smemtrack.state.num_allocs--;
+        _smemtrack.state.num_bytes -= (int) size;
+        free(alloc_ptr);
+    }
+}
+
+SOKOL_API_IMPL smemtrack_info_t smemtrack_info(void) {
+    return _smemtrack.state;
+}
+
+#endif /* SOKOL_MEMTRACK_IMPL */

source/engine/yugine.c

@@ -41,6 +41,8 @@
 #include "stb_image_write.h"
 #include <pl_mpeg.h>
 
+#include "gui.h"
+
 uint64_t start_t;
 uint64_t frame_t;
 
@@ -109,6 +111,7 @@ void c_clean() {
 
 void c_event(const sapp_event *e)
 {
+  gui_input(e);
   char lcfmt[5];
   switch (e->type) {
     case SAPP_EVENTTYPE_MOUSE_MOVE: