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Initial merge of Emscripten port!

Browse Source 
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 Jyl?nki, Alon Zakai, Edward Rudd,
Bruce Mitchener, and Martin Gerhardy. (Thanks, everyone!)
This commit is contained in:
Ryan C. Gordon
2014-12-18 00:19:52 -05:00
parent a228b67d88
commit fe40a17224
61 changed files with 4047 additions and 600 deletions
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99
test/testviewport.c
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@@ -15,12 +15,23 @@
#include <stdio.h>
#include <time.h>
#ifdef __EMSCRIPTEN__
#include <emscripten/emscripten.h>
#endif
#include "SDL_test.h"
#include "SDL_test_common.h"
static SDLTest_CommonState *state;
SDL_Rect viewport;
int done, j;
SDL_bool use_target = SDL_FALSE;
#ifdef __EMSCRIPTEN__
Uint32 wait_start;
#endif
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void
quit(int rc)
@@ -77,14 +88,54 @@ DrawOnViewport(SDL_Renderer * renderer, SDL_Rect viewport)
SDL_RenderFillRect(renderer, &rect);
}
void
loop()
{
#ifdef __EMSCRIPTEN__
/* Avoid using delays */
if(SDL_GetTicks() - wait_start < 1000)
return;
wait_start = SDL_GetTicks();
#endif
SDL_Event event;
int i;
/* Check for events */
while (SDL_PollEvent(&event)) {
SDLTest_CommonEvent(state, &event, &done);
}
/* Move a viewport box in steps around the screen */
viewport.x = j * 100;
viewport.y = viewport.x;
viewport.w = 100 + j * 50;
viewport.h = 100 + j * 50;
j = (j + 1) % 4;
SDL_Log("Current Viewport x=%i y=%i w=%i h=%i", viewport.x, viewport.y, viewport.w, viewport.h);
for (i = 0; i < state->num_windows; ++i) {
if (state->windows[i] == NULL)
continue;
/* Draw using viewport */
DrawOnViewport(state->renderers[i], viewport);
/* Update the screen! */
if (use_target) {
SDL_SetRenderTarget(state->renderers[i], NULL);
SDL_RenderCopy(state->renderers[i], state->targets[i], NULL, NULL);
SDL_RenderPresent(state->renderers[i]);
SDL_SetRenderTarget(state->renderers[i], state->targets[i]);
} else {
SDL_RenderPresent(state->renderers[i]);
}
}
}
int
main(int argc, char *argv[])
{
int i, j, done;
SDL_Event event;
int i;
Uint32 then, now, frames;
SDL_Rect viewport;
SDL_bool use_target = SDL_FALSE;
/* Initialize test framework */
state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
@@ -135,41 +186,17 @@ main(int argc, char *argv[])
then = SDL_GetTicks();
done = 0;
j = 0;
while (!done) {
/* Check for events */
++frames;
while (SDL_PollEvent(&event)) {
SDLTest_CommonEvent(state, &event, &done);
}
/* Move a viewport box in steps around the screen */
viewport.x = j * 100;
viewport.y = viewport.x;
viewport.w = 100 + j * 50;
viewport.h = 100 + j * 50;
j = (j + 1) % 4;
SDL_Log("Current Viewport x=%i y=%i w=%i h=%i", viewport.x, viewport.y, viewport.w, viewport.h);
for (i = 0; i < state->num_windows; ++i) {
if (state->windows[i] == NULL)
continue;
/* Draw using viewport */
DrawOnViewport(state->renderers[i], viewport);
/* Update the screen! */
if (use_target) {
SDL_SetRenderTarget(state->renderers[i], NULL);
SDL_RenderCopy(state->renderers[i], state->targets[i], NULL, NULL);
SDL_RenderPresent(state->renderers[i]);
SDL_SetRenderTarget(state->renderers[i], state->targets[i]);
} else {
SDL_RenderPresent(state->renderers[i]);
}
}
#ifdef __EMSCRIPTEN__
wait_start = SDL_GetTicks();
emscripten_set_main_loop(loop, 0, 1);
#else
while (!done) {
++frames;
loop();
SDL_Delay(1000);
}
#endif
/* Print out some timing information */
now = SDL_GetTicks();