Emscripten improvements (libretro#17422)

Author: BinBashBanana

.gitignore

@@ -196,6 +196,8 @@ retroarch.js
 retroarch.js.mem
 *.bc
 *.wasm
+*.wasm.map
+obj-emscripten/
 
 # only ignore .js files in the repo root
 /*.js

CHANGES.md

@@ -7,6 +7,9 @@
 - CHEEVOS: Include achievement state in netplay states
 - CLOUDSYNC: Fix Windows path issues
 - CLOUDSYNC: Workaround for duplicated requests bug
+- EMSCRIPTEN: Scale window to correct size
+- EMSCRIPTEN: Additional platform functions
+- EMSCRIPTEN/RWEBINPUT: Add touch input support
 - GENERAL: Fix save state auto increment
 - GENERAL: Fix softpatching with periods/dots in the file name
 - GENERAL: Fix compilation with --enable-videocore
@@ -34,6 +37,7 @@
 - SAVESTATES: Reset state index when loading new content
 - UWP: Fix slang shader compilation
 - VIDEO: Enable BFI setting for mobile platforms (mind the warnings)
+- VIDEO/OpenGLES: Fix FP/sRGB FBO support
 - VIDEO/SHADERS: Allow exact refresh rate sync with shader subframes
 - WEBPLAYER: Update core list for 1.20.0
 

Makefile.common

@@ -1570,10 +1570,11 @@ ifeq ($(HAVE_GL_CONTEXT), 1)
       DEF_FLAGS += $(OPENGLES_CFLAGS)
       ifeq ($(HAVE_OPENGLES3), 1)
          DEFINES += -DHAVE_OPENGLES3
+         OBJ += $(LIBRETRO_COMM_DIR)/glsym/glsym_es3.o
       else
          DEFINES += -DHAVE_OPENGLES2
+         OBJ += $(LIBRETRO_COMM_DIR)/glsym/glsym_es2.o
       endif
-      OBJ += $(LIBRETRO_COMM_DIR)/glsym/glsym_es2.o
    else
       DEFINES += -DHAVE_GL_SYNC
       OBJ += $(LIBRETRO_COMM_DIR)/glsym/glsym_gl.o

Makefile.emscripten

@@ -25,7 +25,6 @@ HAVE_REWIND = 1
 HAVE_AUDIOMIXER = 1
 HAVE_CC_RESAMPLER = 1
 HAVE_EGL    = 1
-HAVE_OPENGLES = 1
 HAVE_RJPEG  = 0
 HAVE_RPNG   = 1
 HAVE_EMSCRIPTEN = 1
@@ -58,34 +57,49 @@ HAVE_CHD ?= 0
 #  You have been warned.
 HAVE_RWEBAUDIO = 0
 
-ASYNC ?= 0
-ifeq ($(LIBRETRO), mupen64plus)
-   ASYNC = 1
-endif
+# help diagnose GL problems (can cause issues in normal operation)
+GL_DEBUG ?= 0
 
-LTO ?= 0
-ifeq ($(LIBRETRO), tyrquake)
-   LTO = 0
-endif
+# enable javascript filesystem tracking
+FS_DEBUG = 1
 
-PTHREAD ?= 0
+HAVE_OPENGLES ?= 1
+HAVE_OPENGLES3 ?= 0
 
-MEMORY ?= 134217728
+ASYNC ?= 0
+LTO ?= 0
+PTHREAD ?= 0
 
-PRECISE_F32 = 1
+STACK_SIZE ?= 4194304
+INITIAL_HEAP ?= 134217728
+
+# 4194304 ----- 4 MiB (Stack: recommended)
+# 8388608 ----- 8 MiB
+# 16777216 ---- 16 MiB
+# 33554432 ---- 32 MiB
+# 67108864 ---- 64 MiB
+# 134217728 --- 128 MiB (Heap: recommended) (Stack: recommended for some cores [mupen64plus_next])
+# 268435456 --- 256 MiB (Heap: recommended for some cores [mupen64plus_next])
+# 536870912 --- 512 MiB (Heap: needed for some cores [mednafen_psx(_hw)])
+# 1073741824 -- 1 GiB
+# 1610612736 -- 1.5 GiB
+# 2147483648 -- 2 GiB
 
 OBJDIR := obj-emscripten
 
-#if you compile with SDL2 flag add this Emscripten flag "-s USE_SDL=2" to LDFLAGS:
+EXPORTED_FUNCTIONS = _main,_malloc,_free,_cmd_savefiles,_cmd_save_state,_cmd_load_state,_cmd_undo_save_state,_cmd_undo_load_state,_cmd_take_screenshot,\
+_cmd_toggle_menu,_cmd_reload_config,_cmd_toggle_grab_mouse,_cmd_toggle_game_focus,_cmd_reset,_cmd_toggle_pause,_cmd_pause,_cmd_unpause,\
+_cmd_set_volume,_cmd_set_shader,_cmd_cheat_set_code,_cmd_cheat_get_code,_cmd_cheat_toggle_index,_cmd_cheat_get_code_state,_cmd_cheat_realloc,\
+_cmd_cheat_get_size,_cmd_cheat_apply_cheats
 
 LIBS    := -s USE_ZLIB=1
-LDFLAGS := -L. --no-heap-copy -s $(LIBS) -s TOTAL_MEMORY=$(MEMORY) -s NO_EXIT_RUNTIME=0 -s FULL_ES2=1 \
-           -s "EXPORTED_RUNTIME_METHODS=['callMain', 'FS', 'PATH', 'ERRNO_CODES']" \
-           -s ALLOW_MEMORY_GROWTH=1 -s "EXPORTED_FUNCTIONS=['_main', '_malloc', '_cmd_savefiles', '_cmd_save_state', '_cmd_load_state', '_cmd_take_screenshot']" \
+LDFLAGS := -L. --no-heap-copy -s $(LIBS) -s STACK_SIZE=$(STACK_SIZE) -s INITIAL_MEMORY=$(INITIAL_HEAP) \
+           -s EXPORTED_RUNTIME_METHODS=callMain,FS,PATH,ERRNO_CODES,stringToNewUTF8,UTF8ToString \
+           -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="$(EXPORTED_FUNCTIONS)" \
            -s MODULARIZE=1 -s EXPORT_ES6=1 -s EXPORT_NAME="libretro_$(subst -,_,$(LIBRETRO))" \
-           -s DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=1 \
-           --js-library emscripten/library_errno_codes.js \
-           --js-library emscripten/library_rwebcam.js
+           --extern-pre-js emscripten/pre.js \
+           --js-library emscripten/library_rwebcam.js \
+           --js-library emscripten/library_platform_emscripten.js
 
 ifeq ($(HAVE_RWEBAUDIO), 1)
    LDFLAGS += --js-library emscripten/library_rwebaudio.js
@@ -94,11 +108,11 @@ endif
 ifeq ($(HAVE_AL), 1)
    LDFLAGS += -lopenal
    DEFINES += -DHAVE_AL
-   ASYNC = 1
+   override ASYNC = 1
 endif
 
 ifneq ($(PTHREAD), 0)
-   LDFLAGS += -s WASM_MEM_MAX=1073741824 -pthread -s PTHREAD_POOL_SIZE=$(PTHREAD)
+   LDFLAGS += -s MAXIMUM_MEMORY=1073741824 -pthread -s PTHREAD_POOL_SIZE=$(PTHREAD)
    CFLAGS += -pthread
    HAVE_THREADS=1
 else
@@ -108,10 +122,26 @@ endif
 ifeq ($(ASYNC), 1)
    LDFLAGS += -s ASYNCIFY=$(ASYNC) -s ASYNCIFY_STACK_SIZE=8192 
    ifeq ($(DEBUG), 1)
-     LDFLAGS += -s ASYNCIFY_DEBUG=1 # -s ASYNCIFY_ADVISE
+      LDFLAGS += -s ASYNCIFY_DEBUG=1 # -s ASYNCIFY_ADVISE
    endif
 endif
 
+ifeq ($(HAVE_OPENGLES), 1)
+   ifeq ($(HAVE_OPENGLES3), 1)
+      LDFLAGS += -s FULL_ES3=1 -s MIN_WEBGL_VERSION=2 -s MAX_WEBGL_VERSION=2
+   else
+      LDFLAGS += -s FULL_ES2=1
+   endif
+endif
+
+ifeq ($(GL_DEBUG), 1)
+   LDFLAGS += -s GL_ASSERTIONS=1 -s GL_DEBUG=1
+endif
+
+ifeq ($(FS_DEBUG), 1)
+   LDFLAGS += -s FS_DEBUG=1
+endif
+
 ifeq ($(HAVE_SDL2), 1)
    LIBS += -s USE_SDL=2
    DEFINES += -DHAVE_SDL2
@@ -121,12 +151,14 @@ include Makefile.common
 
 CFLAGS += $(DEF_FLAGS) -Ideps -Ideps/stb
 
-libretro :=
+libretro     =
+libretro_new =
 
 ifeq ($(HAVE_STATIC_DUMMY),1)
   DEFINES += -DHAVE_STATIC_DUMMY
 else
-  libretro += libretro_emscripten.bc
+  libretro     = libretro_emscripten.bc
+  libretro_new = libretro_emscripten.a
 endif
 
 ifneq ($(V), 1)
@@ -135,31 +167,26 @@ endif
 
 ifeq ($(DEBUG), 1)
    LDFLAGS += -O0 -g -gsource-map -s SAFE_HEAP=1 -s STACK_OVERFLOW_CHECK=2 -s ASSERTIONS=1
-   CFLAGS += -O0 -g -gsource-map -s SAFE_HEAP=1 -s SAFE_HEAP_LOG=1 -s STACK_OVERFLOW_CHECK=2 -s ASSERTIONS=1
+   CFLAGS += -O0 -g -gsource-map
 else
-   LDFLAGS += -O3 -s WASM=1
+   LDFLAGS += -O3
    # WARNING: some optimizations can break some cores (ex: LTO breaks tyrquake)
-   LDFLAGS += -s PRECISE_F32=$(PRECISE_F32)
    ifeq ($(LTO), 1)
-      LDFLAGS += --llvm-lto 3
+      LDFLAGS += -flto
    endif
    CFLAGS += -O3
 endif
 
-# 128 * 1024, double the usual emscripten stack size
-LDFLAGS += -s STACK_SIZE=131072
-
-LDFLAGS += --extern-pre-js emscripten/pre.js
-
 CFLAGS += -Wall -I. -Ilibretro-common/include -Ideps/7zip -std=gnu99
 
 RARCH_OBJ := $(addprefix $(OBJDIR)/,$(OBJ))
 
 all: $(TARGET)
 
 $(TARGET): $(RARCH_OBJ) $(libretro)
-	@$(if $(Q), $(shell echo echo LD $@),)
-	$(Q)$(LD) -o $@ $(RARCH_OBJ) $(libretro) $(LIBS) $(LDFLAGS)
+	@$(if $(libretro), mv -f $(libretro) $(libretro_new),)
+	@$(if $(Q), $(shell echo echo "LD $@ \<obj\> $(libretro_new) $(LIBS) $(LDFLAGS)"),)
+	$(Q)$(LD) -o $@ $(RARCH_OBJ) $(libretro_new) $(LIBS) $(LDFLAGS)
 
 $(OBJDIR)/%.o: %.c
 	@mkdir -p $(dir $@)

cheat_manager.c

@@ -122,11 +122,13 @@ void cheat_manager_apply_cheats(void)
 void cheat_manager_set_code(unsigned i, const char *str)
 {
    cheat_manager_t *cheat_st = &cheat_manager_state;
-   if (!cheat_st->cheats)
+   if (!cheat_st->cheats || string_is_empty(str))
       return;
 
-   if (!string_is_empty(str))
-      strcpy(cheat_st->cheats[i].code, str);
+   if (cheat_st->cheats[i].code)
+      free(cheat_st->cheats[i].code);
+
+   cheat_st->cheats[i].code = strdup(str);
 
    cheat_st->cheats[i].state = true;
 }

command.h

@@ -260,6 +260,7 @@ enum event_command
    CMD_EVENT_PRESENCE_UPDATE,
    CMD_EVENT_OVERLAY_NEXT,
    CMD_EVENT_OSK_TOGGLE,
+   CMD_EVENT_RELOAD_CONFIG,
 #ifdef HAVE_MICROPHONE
    /* Stops all enabled microphones. */
    CMD_EVENT_MICROPHONE_STOP,

config.def.h

@@ -764,6 +764,9 @@
 #define DEFAULT_MENU_TICKER_SPEED 2.0f
 #define DEFAULT_MENU_TICKER_SMOOTH true
 
+/* Don't skip rendering assets based on the absence of other assets */
+#define DEFAULT_MENU_IGNORE_MISSING_ASSETS false
+
 #if defined(HAVE_THREADS)
 #define DEFAULT_MENU_SAVESTATE_RESUME true
 #else

configuration.c

@@ -1933,6 +1933,7 @@ static struct config_bool_setting *populate_settings_bool(
    SETTING_BOOL("menu_dynamic_wallpaper_enable", &settings->bools.menu_dynamic_wallpaper_enable, true, DEFAULT_MENU_DYNAMIC_WALLPAPER_ENABLE, false);
    SETTING_BOOL("menu_ticker_smooth",            &settings->bools.menu_ticker_smooth, true, DEFAULT_MENU_TICKER_SMOOTH, false);
    SETTING_BOOL("menu_scroll_fast",              &settings->bools.menu_scroll_fast, true, DEFAULT_MENU_SCROLL_FAST, false);
+   SETTING_BOOL("menu_ignore_missing_assets",    &settings->bools.menu_ignore_missing_assets, true, DEFAULT_MENU_IGNORE_MISSING_ASSETS, false);
 
    SETTING_BOOL("settings_show_drivers",         &settings->bools.settings_show_drivers, true, DEFAULT_SETTINGS_SHOW_DRIVERS, false);
    SETTING_BOOL("settings_show_video",           &settings->bools.settings_show_video, true, DEFAULT_SETTINGS_SHOW_VIDEO, false);

configuration.h

@@ -832,6 +832,7 @@ typedef struct settings
       bool menu_disable_left_analog;
       bool menu_disable_right_analog;
       bool menu_ticker_smooth;
+      bool menu_ignore_missing_assets;
       bool settings_show_drivers;
       bool settings_show_video;
       bool settings_show_audio;

dist-scripts/dist-cores.sh

@@ -61,6 +61,7 @@ mkdir -p ../pkg/${platform}/build/rom
 # Emscripten
 elif [ $PLATFORM = "emscripten" ] ; then
 platform=emscripten
+# todo: change this to a
 EXT=bc
 
 if [ -z "$EMSCRIPTEN" ] ; then
@@ -199,26 +200,42 @@ for f in `ls -v *_${platform}.${EXT}`; do
 
    echo Buildbot: building ${name} for ${platform}
    name=`echo "$f" | sed "s/\(_libretro_${platform}\|\).${EXT}$//"`
-   async=0
-   pthread=${pthread:-0}
    lto=0
    whole_archive=
    big_stack=
 
-   if [ $PLATFORM = "emscripten" ]; then
-      async=1 #emscripten needs async to sleep
-   fi
    if [ $name = "nxengine" ] ; then
       echo "Applying whole archive linking..."
       whole_archive="WHOLE_ARCHIVE_LINK=1"
    elif [ $name = "tyrquake" ] ; then
       echo "Applying big stack..."
       lto=0
       big_stack="BIG_STACK=1"
-   elif [ $name = "mupen64plus" ] ; then
-      async=1
-   elif [ $name = "dosbox" ] ; then
+   fi
+   if [ $PLATFORM = "emscripten" ]; then
       async=0
+      pthread=${pthread:-0}
+      gles3=0
+      stack_mem=4194304
+      heap_mem=134217728
+      if [ $name = "mupen64plus_next" ] ; then
+         gles3=1
+         async=1
+         stack_mem=134217728
+         heap_mem=268435456
+      elif [ $name = "parallel_n64" ] ; then
+         gles3=1
+         async=1
+      elif [ $name = "mednafen_psx" ] ; then
+         heap_mem=536870912
+      elif [ $name = "mednafen_psx_hw" ] ; then
+         gles3=1
+         heap_mem=536870912
+      elif [ $name = "dosbox" ] ; then
+         async=1
+      elif [ $name = "scummvm" ] ; then
+         async=1
+      fi
    fi
    echo "-- Building core: $name --"
    if [ $PLATFORM = "unix" ]; then
@@ -227,15 +244,21 @@ for f in `ls -v *_${platform}.${EXT}`; do
       cp -f "$f" ../libretro_${platform}.${EXT}
    fi
    echo NAME: $name
-   echo ASYNC: $async
    echo LTO: $lto
+   if [ $PLATFORM = "emscripten" ]; then
+      echo ASYNC: $async
+      echo PTHREAD: $pthread
+      echo GLES3: $gles3
+      echo STACK_MEMORY: $stack_mem
+      echo HEAP_MEMORY: $heap_mem
+   fi
 
    # Do cleanup if this is a big stack core
    if [ "$big_stack" = "BIG_STACK=1" ] ; then
       if [ $MAKEFILE_GRIFFIN = "yes" ]; then
          make -C ../ -f Makefile.griffin platform=${platform} clean || exit 1
       elif [ $PLATFORM = "emscripten" ]; then
-         make -C ../ -f Makefile.emscripten PTHREAD=$pthread ASYNC=$async LTO=$lto -j7 clean || exit 1
+         make -C ../ -f Makefile.emscripten PTHREAD=$pthread ASYNC=$async LTO=$lto HAVE_OPENGLES3=$gles3 -j7 clean || exit 1
       elif [ $PLATFORM = "unix" ]; then
          make -C ../ -f Makefile LINK=g++ LTO=$lto -j7 clean || exit 1
       else
@@ -247,8 +270,8 @@ for f in `ls -v *_${platform}.${EXT}`; do
    if [ $MAKEFILE_GRIFFIN = "yes" ]; then
       make -C ../ -f Makefile.griffin $OPTS platform=${platform} $whole_archive $big_stack -j3 || exit 1
    elif [ $PLATFORM = "emscripten" ]; then
-       echo "BUILD COMMAND: make -C ../ -f Makefile.emscripten PTHREAD=$pthread ASYNC=$async LTO=$lto -j7 LIBRETRO=${name} TARGET=${name}_libretro.js"
-       make -C ../ -f Makefile.emscripten $OPTS PTHREAD=$pthread ASYNC=$async LTO=$lto -j7 LIBRETRO=${name} TARGET=${name}_libretro.js || exit 1
+       echo "BUILD COMMAND: make -C ../ -f Makefile.emscripten PTHREAD=$pthread ASYNC=$async LTO=$lto HAVE_OPENGLES3=$gles3 STACK_SIZE=$stack_mem INITIAL_HEAP=$heap_mem -j7 LIBRETRO=${name} TARGET=${name}_libretro.js"
+       make -C ../ -f Makefile.emscripten $OPTS PTHREAD=$pthread ASYNC=$async LTO=$lto HAVE_OPENGLES3=$gles3 STACK_SIZE=$stack_mem INITIAL_HEAP=$heap_mem -j7 LIBRETRO=${name} TARGET=${name}_libretro.js || exit 1
    elif [ $PLATFORM = "unix" ]; then
       make -C ../ -f Makefile LINK=g++ $whole_archive $big_stack -j3 || exit 1
    elif [ $PLATFORM = "ctr" ]; then
@@ -318,6 +341,9 @@ for f in `ls -v *_${platform}.${EXT}`; do
       if [ $pthread != 0 ] ; then
          mv -f ../${name}_libretro.worker.js ../pkg/emscripten/${name}_libretro.worker.js
       fi
+      if [ -f ../${name}_libretro.wasm.map ] ; then
+         mv -f ../${name}_libretro.wasm.map ../pkg/emscripten/${name}_libretro.wasm.map
+      fi
    fi
 
   # Do manual executable step