diff options
Diffstat (limited to '3rdparty/SDL2/src/video/emscripten/SDL_emscriptenframebuffer.c')
-rw-r--r-- | 3rdparty/SDL2/src/video/emscripten/SDL_emscriptenframebuffer.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/3rdparty/SDL2/src/video/emscripten/SDL_emscriptenframebuffer.c b/3rdparty/SDL2/src/video/emscripten/SDL_emscriptenframebuffer.c deleted file mode 100644 index 8a6a465d94f..00000000000 --- a/3rdparty/SDL2/src/video/emscripten/SDL_emscriptenframebuffer.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 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_emscriptenvideo.h" -#include "SDL_emscriptenframebuffer.h" - - -int Emscripten_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch) -{ - SDL_Surface *surface; - const Uint32 surface_format = SDL_PIXELFORMAT_BGR888; - int w, h; - int bpp; - Uint32 Rmask, Gmask, Bmask, Amask; - - /* Free the old framebuffer surface */ - SDL_WindowData *data = (SDL_WindowData *) window->driverdata; - surface = data->surface; - SDL_FreeSurface(surface); - - /* Create a new one */ - SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask); - SDL_GetWindowSize(window, &w, &h); - - surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask); - if (!surface) { - return -1; - } - - /* Save the info and return! */ - data->surface = surface; - *format = surface_format; - *pixels = surface->pixels; - *pitch = surface->pitch; - return 0; -} - -int Emscripten_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects) -{ - SDL_Surface *surface; - - SDL_WindowData *data = (SDL_WindowData *) window->driverdata; - surface = data->surface; - if (!surface) { - return SDL_SetError("Couldn't find framebuffer surface for window"); - } - - /* Send the data to the display */ - - EM_ASM_INT({ - var w = $0; - var h = $1; - var pixels = $2; - - 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.w !== w || SDL2.h !== h || SDL2.imageCtx !== SDL2.ctx) { - SDL2.image = SDL2.ctx.createImageData(w, h); - SDL2.w = w; - SDL2.h = h; - SDL2.imageCtx = SDL2.ctx; - } - var data = SDL2.image.data; - var src = pixels >> 2; - var dst = 0; - var num; - if (typeof CanvasPixelArray !== 'undefined' && data instanceof CanvasPixelArray) { - // IE10/IE11: ImageData objects are backed by the deprecated CanvasPixelArray, - // not UInt8ClampedArray. These don't have buffers, so we need to revert - // to copying a byte at a time. We do the undefined check because modern - // browsers do not define CanvasPixelArray anymore. - num = data.length; - while (dst < num) { - var val = HEAP32[src]; // This is optimized. Instead, we could do {{{ makeGetValue('buffer', 'dst', 'i32') }}}; - data[dst ] = val & 0xff; - data[dst+1] = (val >> 8) & 0xff; - data[dst+2] = (val >> 16) & 0xff; - data[dst+3] = 0xff; - src++; - dst += 4; - } - } else { - if (SDL2.data32Data !== data) { - SDL2.data32 = new Int32Array(data.buffer); - SDL2.data8 = new Uint8Array(data.buffer); - } - var data32 = SDL2.data32; - num = data32.length; - // logically we need to do - // while (dst < num) { - // data32[dst++] = HEAP32[src++] | 0xff000000 - // } - // the following code is faster though, because - // .set() is almost free - easily 10x faster due to - // native memcpy efficiencies, and the remaining loop - // just stores, not load + store, so it is faster - data32.set(HEAP32.subarray(src, src + num)); - var data8 = SDL2.data8; - var i = 3; - var j = i + 4*num; - if (num % 8 == 0) { - // unrolling gives big speedups - while (i < j) { - data8[i] = 0xff; - i = i + 4 | 0; - data8[i] = 0xff; - i = i + 4 | 0; - data8[i] = 0xff; - i = i + 4 | 0; - data8[i] = 0xff; - i = i + 4 | 0; - data8[i] = 0xff; - i = i + 4 | 0; - data8[i] = 0xff; - i = i + 4 | 0; - data8[i] = 0xff; - i = i + 4 | 0; - data8[i] = 0xff; - i = i + 4 | 0; - } - } else { - while (i < j) { - data8[i] = 0xff; - i = i + 4 | 0; - } - } - } - - SDL2.ctx.putImageData(SDL2.image, 0, 0); - return 0; - }, surface->w, surface->h, surface->pixels); - - /*if (SDL_getenv("SDL_VIDEO_Emscripten_SAVE_FRAMES")) { - static int frame_number = 0; - char file[128]; - SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp", - SDL_GetWindowID(window), ++frame_number); - SDL_SaveBMP(surface, file); - }*/ - return 0; -} - -void Emscripten_DestroyWindowFramebuffer(_THIS, SDL_Window * window) -{ - SDL_WindowData *data = (SDL_WindowData *) window->driverdata; - - SDL_FreeSurface(data->surface); - data->surface = NULL; -} - -#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */ - -/* vi: set ts=4 sw=4 expandtab: */ |