Mercurial > sdl-ios-xcode
changeset 5178:9b2e99ebd099
Added the Windows framebuffer implementation.
This actually ends up being faster than Direct3D with a dynamic texture. (???)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 04 Feb 2011 12:29:58 -0800 |
| parents | b9cf75615028 |
| children | 6d37aa594ecd |
| files | src/video/windows/SDL_windowsframebuffer.c src/video/windows/SDL_windowsframebuffer.h src/video/windows/SDL_windowsvideo.c src/video/windows/SDL_windowswindow.h |
| diffstat | 4 files changed, 124 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/windows/SDL_windowsframebuffer.c Fri Feb 04 12:29:58 2011 -0800 @@ -0,0 +1,90 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2010 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +#include "SDL_windowsvideo.h" + + +int WIN_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch) +{ + SDL_WindowData *data = (SDL_WindowData *) window->driverdata; + BITMAPINFO info; + + /* Free the old framebuffer surface */ + if (data->mdc) { + DeleteDC(data->mdc); + } + if (data->hbm) { + DeleteObject(data->hbm); + } + + /* We'll use RGB format for now */ + *format = SDL_PIXELFORMAT_RGB888; + *pitch = (((window->w * SDL_BYTESPERPIXEL(*format)) + 3) & ~3); + + /* Create a new one */ + info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + info.bmiHeader.biWidth = window->w; + info.bmiHeader.biHeight = -window->h; /* negative for topdown bitmap */ + info.bmiHeader.biPlanes = 1; + info.bmiHeader.biBitCount = 32; + info.bmiHeader.biCompression = BI_RGB; + info.bmiHeader.biSizeImage = window->h * (*pitch); + info.bmiHeader.biXPelsPerMeter = 0; + info.bmiHeader.biYPelsPerMeter = 0; + info.bmiHeader.biClrUsed = 0; + info.bmiHeader.biClrImportant = 0; + + data->mdc = CreateCompatibleDC(data->hdc); + data->hbm = CreateDIBSection(data->hdc, &info, DIB_RGB_COLORS, pixels, NULL, 0); + if (!data->hbm) { + WIN_SetError("Unable to create DIB"); + return -1; + } + SelectObject(data->mdc, data->hbm); + + return 0; +} + +int WIN_UpdateWindowFramebuffer(_THIS, SDL_Window * window, int numrects, SDL_Rect * rects) +{ + SDL_WindowData *data = (SDL_WindowData *) window->driverdata; + + BitBlt(data->hdc, 0, 0, window->w, window->h, data->mdc, 0, 0, SRCCOPY); + return 0; +} + +void WIN_DestroyWindowFramebuffer(_THIS, SDL_Window * window) +{ + SDL_WindowData *data = (SDL_WindowData *) window->driverdata; + + if (data->mdc) { + DeleteDC(data->mdc); + data->mdc = NULL; + } + if (data->hbm) { + DeleteObject(data->hbm); + data->hbm = NULL; + } +} + +/* vi: set ts=4 sw=4 expandtab: */
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/windows/SDL_windowsframebuffer.h Fri Feb 04 12:29:58 2011 -0800 @@ -0,0 +1,28 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2010 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +extern int WIN_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch); +extern int WIN_UpdateWindowFramebuffer(_THIS, SDL_Window * window, int numrects, SDL_Rect * rects); +extern void WIN_DestroyWindowFramebuffer(_THIS, SDL_Window * window); + +/* vi: set ts=4 sw=4 expandtab: */
--- a/src/video/windows/SDL_windowsvideo.c Fri Feb 04 12:26:01 2011 -0800 +++ b/src/video/windows/SDL_windowsvideo.c Fri Feb 04 12:29:58 2011 -0800 @@ -28,6 +28,7 @@ #include "../SDL_pixels_c.h" #include "SDL_windowsvideo.h" +#include "SDL_windowsframebuffer.h" #include "SDL_windowsshape.h" /* Initialization/Query functions */ @@ -128,6 +129,9 @@ device->SetWindowGrab = WIN_SetWindowGrab; device->DestroyWindow = WIN_DestroyWindow; device->GetWindowWMInfo = WIN_GetWindowWMInfo; + device->CreateWindowFramebuffer = WIN_CreateWindowFramebuffer; + device->UpdateWindowFramebuffer = WIN_UpdateWindowFramebuffer; + device->DestroyWindowFramebuffer = WIN_DestroyWindowFramebuffer; device->shape_driver.CreateShaper = Win32_CreateShaper; device->shape_driver.SetWindowShape = Win32_SetWindowShape;