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Code Releases Wiki Activity

Examples: Emscripten: Tweaks for size. (#2494)

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This commit is contained in:
omar 2019-04-15 16:36:14 +02:00
parent 35cbf9c052
commit 1fe6533192
3 changed files with 11 additions and 4 deletions
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1
examples/.gitignore vendored
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@ -25,6 +25,7 @@ project.xcworkspace
xcuserdata xcuserdata
## Emscripten output ## Emscripten output
*.o.tmp
*.out.js *.out.js
*.out.wasm *.out.wasm
example_emscripten/example_emscripten.* example_emscripten/example_emscripten.*

6
examples/example_emscripten/Makefile
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@ -24,10 +24,12 @@ UNAME_S := $(shell uname -s)
EMS = -s USE_SDL=2 -s WASM=1 EMS = -s USE_SDL=2 -s WASM=1
EMS += -s ALLOW_MEMORY_GROWTH=1 -s BINARYEN_TRAP_MODE=clamp EMS += -s ALLOW_MEMORY_GROWTH=1 -s BINARYEN_TRAP_MODE=clamp
EMS += -s DISABLE_EXCEPTION_CATCHING=1 -s NO_EXIT_RUNTIME=0 EMS += -s DISABLE_EXCEPTION_CATCHING=1 -s NO_EXIT_RUNTIME=0
EMS += -s ASSERTIONS=1 -s SAFE_HEAP=1 EMS += -s ASSERTIONS=1 -s NO_FILESYSTEM=1
#EMS += -s SAFE_HEAP=1 ## Adds overhead
CPPFLAGS = -I../ -I../../ CPPFLAGS = -I../ -I../../
CPPFLAGS += -g -Wall -Wformat -O3 #CPPFLAGS += -g
CPPFLAGS += -Wall -Wformat -Os
CPPFLAGS += $(EMS) CPPFLAGS += $(EMS)
LIBS = $(EMS) LIBS = $(EMS)
LDFLAGS = --shell-file shell_minimal.html LDFLAGS = --shell-file shell_minimal.html

8
examples/example_emscripten/main.cpp
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@ -14,7 +14,7 @@
#include <SDL.h> #include <SDL.h>
#include <SDL_opengles2.h> #include <SDL_opengles2.h>
// Emscripten requires to have full control over the main loop. We're going to store our SDL book-keeping variables globally. // Emscripten requires to have full control over the main loop. We're going to store our SDL book-keeping variables globally.
// Having a single function that acts as a loop prevents us to store state in the stack of said function. So we need some location for this. // Having a single function that acts as a loop prevents us to store state in the stack of said function. So we need some location for this.
SDL_Window* g_Window = NULL; SDL_Window* g_Window = NULL;
SDL_GLContext g_GLContext = NULL; SDL_GLContext g_GLContext = NULL;
@ -63,6 +63,10 @@ int main(int, char**)
ImGuiIO& io = ImGui::GetIO(); (void)io; ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
// For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
// You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
io.IniFilename = NULL;
// Setup Dear ImGui style // Setup Dear ImGui style
ImGui::StyleColorsDark(); ImGui::StyleColorsDark();
//ImGui::StyleColorsClassic(); //ImGui::StyleColorsClassic();
@ -90,7 +94,7 @@ int main(int, char**)
emscripten_set_main_loop_arg(main_loop, NULL, 0, true); emscripten_set_main_loop_arg(main_loop, NULL, 0, true);
} }
void main_loop(void* arg) void main_loop(void* arg)
{ {
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
IM_UNUSED(arg); // We can pass this argument as the second parameter of emscripten_set_main_loop_arg(), but we don't use that. IM_UNUSED(arg); // We can pass this argument as the second parameter of emscripten_set_main_loop_arg(), but we don't use that.