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emscripten: Modify UpdateWindowFramebuffer

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To work with multiple canvases
This commit is contained in:
Charlie Birks
2018-04-08 16:54:29 +01:00
committed by Charlie Birks
parent 539efc1bba
commit b5aedaad59
1 changed files with 7 additions and 4 deletions
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11
src/video/emscripten/SDL_emscriptenframebuffer.c
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@@ -75,12 +75,15 @@ int Emscripten_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rec
var w = $0;
var h = $1;
var pixels = $2;
var canvasId = UTF8ToString($3);
var canvas = document.querySelector(canvasId);
//TODO: this should store a context per canvas
if (!Module['SDL2']) Module['SDL2'] = {};
var SDL2 = Module['SDL2'];
if (SDL2.ctxCanvas !== Module['canvas']) {
SDL2.ctx = Module['createContext'](Module['canvas'], false, true);
SDL2.ctxCanvas = Module['canvas'];
if (SDL2.ctxCanvas !== canvas) {
SDL2.ctx = Module['createContext'](canvas, false, true);
SDL2.ctxCanvas = canvas;
}
if (SDL2.w !== w || SDL2.h !== h || SDL2.imageCtx !== SDL2.ctx) {
SDL2.image = SDL2.ctx.createImageData(w, h);
@@ -156,7 +159,7 @@ int Emscripten_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rec
}
SDL2.ctx.putImageData(SDL2.image, 0, 0);
}, surface->w, surface->h, surface->pixels);
}, surface->w, surface->h, surface->pixels, data->canvas_id);
if (emscripten_has_asyncify() && SDL_GetHintBoolean(SDL_HINT_EMSCRIPTEN_ASYNCIFY, SDL_TRUE)) {
/* give back control to browser for screen refresh */