--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/dummy/SDL_nullrender.c	Mon Jul 10 21:04:37 2006 +0000
@@ -0,0 +1,194 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2006 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_video.h"
+#include "../SDL_sysvideo.h"
+
+
+/* SDL surface based renderer implementation */
+
+static SDL_Renderer *SDL_DUMMY_CreateRenderer(SDL_Window * window,
+                                              Uint32 flags);
+static int SDL_DUMMY_CreateTexture(SDL_Renderer * renderer,
+                                   SDL_Texture * texture);
+static int SDL_DUMMY_RenderReadPixels(SDL_Renderer * renderer,
+                                      const SDL_Rect * rect, void *pixels,
+                                      int pitch);
+static int SDL_DUMMY_RenderWritePixels(SDL_Renderer * renderer,
+                                       const SDL_Rect * rect,
+                                       const void *pixels, int pitch);
+static void SDL_DUMMY_RenderPresent(SDL_Renderer * renderer);
+static void SDL_DUMMY_DestroyRenderer(SDL_Renderer * renderer);
+
+
+SDL_RenderDriver SDL_DUMMY_RenderDriver = {
+    SDL_DUMMY_CreateRenderer,
+    {
+     "minimal",
+     (SDL_Renderer_Minimal | SDL_Renderer_PresentDiscard |
+      SDL_Renderer_PresentCopy),
+     SDL_TextureBlendMode_None,
+     SDL_TextureScaleMode_None,
+     0,
+     {0},
+     0,
+     0}
+};
+
+typedef struct
+{
+    SDL_Surface *surface;
+} SDL_DUMMY_RenderData;
+
+SDL_Renderer *
+SDL_DUMMY_CreateRenderer(SDL_Window * window, Uint32 flags)
+{
+    SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
+    SDL_DisplayMode *displayMode = &display->current_mode;
+    SDL_Renderer *renderer;
+    SDL_DUMMY_RenderData *data;
+    int bpp;
+    Uint32 Rmask, Gmask, Bmask, Amask;
+
+    if (!SDL_PixelFormatEnumToMasks
+        (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
+        SDL_SetError("Unknown display format");
+        return NULL;
+    }
+
+    renderer = (SDL_Renderer *) SDL_malloc(sizeof(*renderer));
+    if (!renderer) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+    SDL_zerop(renderer);
+
+    data = (SDL_DUMMY_RenderData *) SDL_malloc(sizeof(*data));
+    if (!data) {
+        SDL_DUMMY_DestroyRenderer(renderer);
+        SDL_OutOfMemory();
+        return NULL;
+    }
+    SDL_zerop(data);
+
+    renderer->RenderReadPixels = SDL_DUMMY_RenderReadPixels;
+    renderer->RenderWritePixels = SDL_DUMMY_RenderWritePixels;
+    renderer->RenderPresent = SDL_DUMMY_RenderPresent;
+    renderer->DestroyRenderer = SDL_DUMMY_DestroyRenderer;
+    renderer->info = SDL_DUMMY_RenderDriver.info;
+    renderer->window = window->id;
+    renderer->driverdata = data;
+
+    data->surface =
+        SDL_CreateRGBSurface(0, window->w, window->h, bpp, Rmask, Gmask,
+                             Bmask, Amask);
+    if (!data->surface) {
+        SDL_DUMMY_DestroyRenderer(renderer);
+        return NULL;
+    }
+    SDL_SetSurfacePalette(data->surface, display->palette);
+
+    return renderer;
+}
+
+int
+SDL_DUMMY_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                           void *pixels, int pitch)
+{
+    SDL_DUMMY_RenderData *data =
+        (SDL_DUMMY_RenderData *) renderer->driverdata;
+    SDL_Surface *surface = data->surface;
+    Uint8 *src, *dst;
+    int row;
+    size_t length;
+
+    src =
+        (Uint8 *) surface->pixels + rect->y * surface->pitch +
+        rect->x * surface->format->BytesPerPixel;
+    dst = (Uint8 *) pixels;
+    length = rect->w * surface->format->BytesPerPixel;
+    for (row = 0; row < rect->h; ++row) {
+        SDL_memcpy(dst, src, length);
+        src += surface->pitch;
+        dst += pitch;
+    }
+    return 0;
+}
+
+int
+SDL_DUMMY_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                            const void *pixels, int pitch)
+{
+    SDL_DUMMY_RenderData *data =
+        (SDL_DUMMY_RenderData *) renderer->driverdata;
+    SDL_Surface *surface = data->surface;
+    Uint8 *src, *dst;
+    int row;
+    size_t length;
+
+    src = (Uint8 *) pixels;
+    dst =
+        (Uint8 *) surface->pixels + rect->y * surface->pitch +
+        rect->x * surface->format->BytesPerPixel;
+    length = rect->w * surface->format->BytesPerPixel;
+    for (row = 0; row < rect->h; ++row) {
+        SDL_memcpy(dst, src, length);
+        src += pitch;
+        dst += surface->pitch;
+    }
+    return 0;
+}
+
+void
+SDL_DUMMY_RenderPresent(SDL_Renderer * renderer)
+{
+    static int frame_number;
+    SDL_DUMMY_RenderData *data =
+        (SDL_DUMMY_RenderData *) renderer->driverdata;
+    SDL_Surface *surface = data->surface;
+
+    if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
+        char file[128];
+        SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
+                     renderer->window, ++frame_number);
+        SDL_SaveBMP(surface, file);
+    }
+}
+
+void
+SDL_DUMMY_DestroyRenderer(SDL_Renderer * renderer)
+{
+    SDL_DUMMY_RenderData *data =
+        (SDL_DUMMY_RenderData *) renderer->driverdata;
+
+    if (data) {
+        if (data->surface) {
+            data->surface->format->palette = NULL;
+            SDL_FreeSurface(data->surface);
+        }
+        SDL_free(data);
+    }
+    SDL_free(renderer);
+}
+
+/* vi: set ts=4 sw=4 expandtab: */