Initial merge of Emscripten port!
With this commit, you can compile SDL2 with Emscripten ( http://emscripten.org/ ), and make your SDL-based C/C++ program into a web app. This port was due to the efforts of several people, including: Charlie Birks, Sathyanarayanan Gunasekaran, Jukka Jylänki, Alon Zakai, Edward Rudd, Bruce Mitchener, and Martin Gerhardy. (Thanks, everyone!) --HG-- extra : rebase_source : 97af74c8a5121e926ebe89f123536b5dd6681695
This commit is contained in:
Ryan C. Gordon
parent
c2ebb6b09f
commit
de88474dda
61 changed files with 4047 additions and 600 deletions
320
src/video/emscripten/SDL_emscriptenvideo.c
Normal file
320
src/video/emscripten/SDL_emscriptenvideo.c
Normal file
|
|
@ -0,0 +1,320 @@
|
|||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
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.
|
||||
*/
|
||||
#include "../../SDL_internal.h"
|
||||
|
||||
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
|
||||
|
||||
#include "SDL_video.h"
|
||||
#include "SDL_mouse.h"
|
||||
#include "../SDL_sysvideo.h"
|
||||
#include "../SDL_pixels_c.h"
|
||||
#include "../SDL_egl_c.h"
|
||||
#include "../../events/SDL_events_c.h"
|
||||
|
||||
#include "SDL_emscriptenvideo.h"
|
||||
#include "SDL_emscriptenopengles.h"
|
||||
#include "SDL_emscriptenframebuffer.h"
|
||||
#include "SDL_emscriptenevents.h"
|
||||
#include "SDL_emscriptenmouse.h"
|
||||
|
||||
#define EMSCRIPTENVID_DRIVER_NAME "emscripten"
|
||||
|
||||
/* Initialization/Query functions */
|
||||
static int Emscripten_VideoInit(_THIS);
|
||||
static int Emscripten_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode);
|
||||
static void Emscripten_VideoQuit(_THIS);
|
||||
|
||||
static int Emscripten_CreateWindow(_THIS, SDL_Window * window);
|
||||
static void Emscripten_SetWindowSize(_THIS, SDL_Window * window);
|
||||
static void Emscripten_DestroyWindow(_THIS, SDL_Window * window);
|
||||
static void Emscripten_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen);
|
||||
static void Emscripten_PumpEvents(_THIS);
|
||||
|
||||
|
||||
/* Emscripten driver bootstrap functions */
|
||||
|
||||
static int
|
||||
Emscripten_Available(void)
|
||||
{
|
||||
return (1);
|
||||
}
|
||||
|
||||
static void
|
||||
Emscripten_DeleteDevice(SDL_VideoDevice * device)
|
||||
{
|
||||
SDL_free(device);
|
||||
}
|
||||
|
||||
static SDL_VideoDevice *
|
||||
Emscripten_CreateDevice(int devindex)
|
||||
{
|
||||
SDL_VideoDevice *device;
|
||||
|
||||
/* Initialize all variables that we clean on shutdown */
|
||||
device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
|
||||
if (!device) {
|
||||
SDL_OutOfMemory();
|
||||
SDL_free(device);
|
||||
return (0);
|
||||
}
|
||||
|
||||
/* Set the function pointers */
|
||||
device->VideoInit = Emscripten_VideoInit;
|
||||
device->VideoQuit = Emscripten_VideoQuit;
|
||||
device->SetDisplayMode = Emscripten_SetDisplayMode;
|
||||
|
||||
|
||||
device->PumpEvents = Emscripten_PumpEvents;
|
||||
|
||||
device->CreateWindow = Emscripten_CreateWindow;
|
||||
/*device->CreateWindowFrom = Emscripten_CreateWindowFrom;
|
||||
device->SetWindowTitle = Emscripten_SetWindowTitle;
|
||||
device->SetWindowIcon = Emscripten_SetWindowIcon;
|
||||
device->SetWindowPosition = Emscripten_SetWindowPosition;*/
|
||||
device->SetWindowSize = Emscripten_SetWindowSize;
|
||||
/*device->ShowWindow = Emscripten_ShowWindow;
|
||||
device->HideWindow = Emscripten_HideWindow;
|
||||
device->RaiseWindow = Emscripten_RaiseWindow;
|
||||
device->MaximizeWindow = Emscripten_MaximizeWindow;
|
||||
device->MinimizeWindow = Emscripten_MinimizeWindow;
|
||||
device->RestoreWindow = Emscripten_RestoreWindow;
|
||||
device->SetWindowGrab = Emscripten_SetWindowGrab;*/
|
||||
device->DestroyWindow = Emscripten_DestroyWindow;
|
||||
device->SetWindowFullscreen = Emscripten_SetWindowFullscreen;
|
||||
|
||||
device->CreateWindowFramebuffer = Emscripten_CreateWindowFramebuffer;
|
||||
device->UpdateWindowFramebuffer = Emscripten_UpdateWindowFramebuffer;
|
||||
device->DestroyWindowFramebuffer = Emscripten_DestroyWindowFramebuffer;
|
||||
|
||||
device->GL_LoadLibrary = Emscripten_GLES_LoadLibrary;
|
||||
device->GL_GetProcAddress = Emscripten_GLES_GetProcAddress;
|
||||
device->GL_UnloadLibrary = Emscripten_GLES_UnloadLibrary;
|
||||
device->GL_CreateContext = Emscripten_GLES_CreateContext;
|
||||
device->GL_MakeCurrent = Emscripten_GLES_MakeCurrent;
|
||||
device->GL_SetSwapInterval = Emscripten_GLES_SetSwapInterval;
|
||||
device->GL_GetSwapInterval = Emscripten_GLES_GetSwapInterval;
|
||||
device->GL_SwapWindow = Emscripten_GLES_SwapWindow;
|
||||
device->GL_DeleteContext = Emscripten_GLES_DeleteContext;
|
||||
device->GL_GetDrawableSize = Emscripten_GLES_GetDrawableSize;
|
||||
|
||||
device->free = Emscripten_DeleteDevice;
|
||||
|
||||
return device;
|
||||
}
|
||||
|
||||
VideoBootStrap Emscripten_bootstrap = {
|
||||
EMSCRIPTENVID_DRIVER_NAME, "SDL emscripten video driver",
|
||||
Emscripten_Available, Emscripten_CreateDevice
|
||||
};
|
||||
|
||||
|
||||
int
|
||||
Emscripten_VideoInit(_THIS)
|
||||
{
|
||||
SDL_DisplayMode mode;
|
||||
double css_w, css_h;
|
||||
|
||||
/* Use a fake 32-bpp desktop mode */
|
||||
mode.format = SDL_PIXELFORMAT_RGB888;
|
||||
|
||||
emscripten_get_element_css_size(NULL, &css_w, &css_h);
|
||||
|
||||
mode.w = css_w;
|
||||
mode.h = css_h;
|
||||
|
||||
mode.refresh_rate = 0;
|
||||
mode.driverdata = NULL;
|
||||
if (SDL_AddBasicVideoDisplay(&mode) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
SDL_zero(mode);
|
||||
SDL_AddDisplayMode(&_this->displays[0], &mode);
|
||||
|
||||
Emscripten_InitMouse();
|
||||
|
||||
/* We're done! */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
Emscripten_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
|
||||
{
|
||||
/* can't do this */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
Emscripten_VideoQuit(_THIS)
|
||||
{
|
||||
Emscripten_FiniMouse();
|
||||
}
|
||||
|
||||
static void
|
||||
Emscripten_PumpEvents(_THIS)
|
||||
{
|
||||
/* do nothing. */
|
||||
}
|
||||
|
||||
static int
|
||||
Emscripten_CreateWindow(_THIS, SDL_Window * window)
|
||||
{
|
||||
SDL_WindowData *wdata;
|
||||
double scaled_w, scaled_h;
|
||||
double css_w, css_h;
|
||||
|
||||
/* Allocate window internal data */
|
||||
wdata = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));
|
||||
if (wdata == NULL) {
|
||||
return SDL_OutOfMemory();
|
||||
}
|
||||
|
||||
if (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) {
|
||||
wdata->pixel_ratio = emscripten_get_device_pixel_ratio();
|
||||
} else {
|
||||
wdata->pixel_ratio = 1.0f;
|
||||
}
|
||||
|
||||
scaled_w = SDL_floor(window->w * wdata->pixel_ratio);
|
||||
scaled_h = SDL_floor(window->h * wdata->pixel_ratio);
|
||||
|
||||
emscripten_set_canvas_size(scaled_w, scaled_h);
|
||||
|
||||
emscripten_get_element_css_size(NULL, &css_w, &css_h);
|
||||
|
||||
wdata->external_size = css_w != scaled_w || css_h != scaled_h;
|
||||
|
||||
if ((window->flags & SDL_WINDOW_RESIZABLE) && wdata->external_size) {
|
||||
/* external css has resized us */
|
||||
scaled_w = css_w * wdata->pixel_ratio;
|
||||
scaled_h = css_h * wdata->pixel_ratio;
|
||||
|
||||
emscripten_set_canvas_size(scaled_w, scaled_h);
|
||||
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, css_w, css_h);
|
||||
}
|
||||
|
||||
/* if the size is not being controlled by css, we need to scale down for hidpi */
|
||||
if (!wdata->external_size) {
|
||||
if (wdata->pixel_ratio != 1.0f) {
|
||||
/*scale canvas down*/
|
||||
emscripten_set_element_css_size(NULL, window->w, window->h);
|
||||
}
|
||||
}
|
||||
|
||||
wdata->windowed_width = scaled_w;
|
||||
wdata->windowed_height = scaled_h;
|
||||
|
||||
if (window->flags & SDL_WINDOW_OPENGL) {
|
||||
if (!_this->egl_data) {
|
||||
if (SDL_GL_LoadLibrary(NULL) < 0) {
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
wdata->egl_surface = SDL_EGL_CreateSurface(_this, NULL);
|
||||
|
||||
if (wdata->egl_surface == EGL_NO_SURFACE) {
|
||||
return SDL_SetError("Could not create GLES window surface");
|
||||
}
|
||||
}
|
||||
|
||||
wdata->window = window;
|
||||
|
||||
/* Setup driver data for this window */
|
||||
window->driverdata = wdata;
|
||||
|
||||
/* One window, it always has focus */
|
||||
SDL_SetMouseFocus(window);
|
||||
SDL_SetKeyboardFocus(window);
|
||||
|
||||
Emscripten_RegisterEventHandlers(wdata);
|
||||
|
||||
/* Window has been successfully created */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void Emscripten_SetWindowSize(_THIS, SDL_Window * window)
|
||||
{
|
||||
SDL_WindowData *data;
|
||||
|
||||
if (window->driverdata) {
|
||||
data = (SDL_WindowData *) window->driverdata;
|
||||
emscripten_set_canvas_size(window->w * data->pixel_ratio, window->h * data->pixel_ratio);
|
||||
|
||||
/*scale canvas down*/
|
||||
if (!data->external_size && data->pixel_ratio != 1.0f) {
|
||||
emscripten_set_element_css_size(NULL, window->w, window->h);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
Emscripten_DestroyWindow(_THIS, SDL_Window * window)
|
||||
{
|
||||
SDL_WindowData *data;
|
||||
|
||||
if(window->driverdata) {
|
||||
data = (SDL_WindowData *) window->driverdata;
|
||||
|
||||
Emscripten_UnregisterEventHandlers(data);
|
||||
if (data->egl_surface != EGL_NO_SURFACE) {
|
||||
SDL_EGL_DestroySurface(_this, data->egl_surface);
|
||||
data->egl_surface = EGL_NO_SURFACE;
|
||||
}
|
||||
SDL_free(window->driverdata);
|
||||
window->driverdata = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
Emscripten_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen)
|
||||
{
|
||||
SDL_WindowData *data;
|
||||
if(window->driverdata) {
|
||||
data = (SDL_WindowData *) window->driverdata;
|
||||
|
||||
if(fullscreen) {
|
||||
data->requested_fullscreen_mode = window->flags & (SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN);
|
||||
/*unset the fullscreen flags as we're not actually fullscreen yet*/
|
||||
window->flags &= ~(SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN);
|
||||
|
||||
EM_ASM({
|
||||
//reparent canvas (similar to Module.requestFullscreen)
|
||||
var canvas = Module['canvas'];
|
||||
if(canvas.parentNode.id != "SDLFullscreenElement") {
|
||||
var canvasContainer = document.createElement("div");
|
||||
canvasContainer.id = "SDLFullscreenElement";
|
||||
canvas.parentNode.insertBefore(canvasContainer, canvas);
|
||||
canvasContainer.appendChild(canvas);
|
||||
}
|
||||
});
|
||||
|
||||
int is_fullscreen;
|
||||
emscripten_get_canvas_size(&data->windowed_width, &data->windowed_height, &is_fullscreen);
|
||||
emscripten_request_fullscreen("SDLFullscreenElement", 1);
|
||||
}
|
||||
else
|
||||
emscripten_exit_fullscreen();
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
Loading…
Add table
Add a link
Reference in a new issue