--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/render/software/SDL_renderer_sw.c	Wed Feb 02 14:34:54 2011 -0800
@@ -0,0 +1,726 @@
+/*
+    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_sysrender.h"
+#include "../../video/SDL_pixels_c.h"
+#include "../../video/SDL_yuv_sw_c.h"
+
+
+/* SDL surface based renderer implementation */
+
+static SDL_Renderer *SW_CreateRenderer(SDL_Window * window, Uint32 flags);
+static void SW_WindowEvent(SDL_Renderer * renderer,
+                           const SDL_WindowEvent *event);
+static int SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
+static int SW_QueryTexturePixels(SDL_Renderer * renderer,
+                                 SDL_Texture * texture, void **pixels,
+                                 int *pitch);
+static int SW_SetTextureColorMod(SDL_Renderer * renderer,
+                                 SDL_Texture * texture);
+static int SW_SetTextureAlphaMod(SDL_Renderer * renderer,
+                                 SDL_Texture * texture);
+static int SW_SetTextureBlendMode(SDL_Renderer * renderer,
+                                  SDL_Texture * texture);
+static int SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                            const SDL_Rect * rect, const void *pixels,
+                            int pitch);
+static int SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                          const SDL_Rect * rect, int markDirty, void **pixels,
+                          int *pitch);
+static void SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
+static int SW_RenderDrawPoints(SDL_Renderer * renderer,
+                               const SDL_Point * points, int count);
+static int SW_RenderDrawLines(SDL_Renderer * renderer,
+                              const SDL_Point * points, int count);
+static int SW_RenderFillRects(SDL_Renderer * renderer,
+                              const SDL_Rect ** rects, int count);
+static int SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+                         const SDL_Rect * srcrect, const SDL_Rect * dstrect);
+static int SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                               Uint32 format, void * pixels, int pitch);
+static int SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                                Uint32 format, const void * pixels, int pitch);
+static void SW_RenderPresent(SDL_Renderer * renderer);
+static void SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
+static void SW_DestroyRenderer(SDL_Renderer * renderer);
+
+
+SDL_RenderDriver SW_RenderDriver = {
+    SW_CreateRenderer,
+    {
+     "software",
+     (SDL_RENDERER_PRESENTVSYNC),
+     13,
+     {
+      SDL_PIXELFORMAT_RGB555,
+      SDL_PIXELFORMAT_RGB565,
+      SDL_PIXELFORMAT_RGB888,
+      SDL_PIXELFORMAT_BGR888,
+      SDL_PIXELFORMAT_ARGB8888,
+      SDL_PIXELFORMAT_RGBA8888,
+      SDL_PIXELFORMAT_ABGR8888,
+      SDL_PIXELFORMAT_BGRA8888,
+      SDL_PIXELFORMAT_YV12,
+      SDL_PIXELFORMAT_IYUV,
+      SDL_PIXELFORMAT_YUY2,
+      SDL_PIXELFORMAT_UYVY,
+      SDL_PIXELFORMAT_YVYU},
+     0,
+     0}
+};
+
+typedef struct
+{
+    Uint32 format;
+    SDL_bool updateSize;
+    SDL_Texture *texture;
+    SDL_Surface surface;
+    SDL_Renderer *renderer;
+    SDL_DirtyRectList dirty;
+} SW_RenderData;
+
+static SDL_Texture *
+CreateTexture(SDL_Renderer * renderer, Uint32 format, int w, int h)
+{
+    SDL_Texture *texture;
+
+    texture = (SDL_Texture *) SDL_calloc(1, sizeof(*texture));
+    if (!texture) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    texture->format = format;
+    texture->access = SDL_TEXTUREACCESS_STREAMING;
+    texture->w = w;
+    texture->h = h;
+    texture->renderer = renderer;
+
+    if (renderer->CreateTexture(renderer, texture) < 0) {
+        SDL_free(texture);
+        return NULL;
+    }
+    return texture;
+}
+
+static void
+DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    renderer->DestroyTexture(renderer, texture);
+    SDL_free(texture);
+}
+
+SDL_Renderer *
+SW_CreateRenderer(SDL_Window * window, Uint32 flags)
+{
+    SDL_Renderer *renderer;
+    SW_RenderData *data;
+    int i;
+    Uint32 format;
+    int bpp;
+    Uint32 Rmask, Gmask, Bmask, Amask;
+    Uint32 renderer_flags;
+    const char *desired_driver;
+
+    format = SDL_GetWindowPixelFormat(window);
+    if (!SDL_PixelFormatEnumToMasks
+        (format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
+        SDL_SetError("Unknown display format");
+        return NULL;
+    }
+
+    renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
+    if (!renderer) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    data = (SW_RenderData *) SDL_calloc(1, sizeof(*data));
+    if (!data) {
+        SW_DestroyRenderer(renderer);
+        SDL_OutOfMemory();
+        return NULL;
+    }
+    renderer->WindowEvent = SW_WindowEvent;
+    renderer->CreateTexture = SW_CreateTexture;
+    renderer->QueryTexturePixels = SW_QueryTexturePixels;
+    renderer->SetTextureColorMod = SW_SetTextureColorMod;
+    renderer->SetTextureAlphaMod = SW_SetTextureAlphaMod;
+    renderer->SetTextureBlendMode = SW_SetTextureBlendMode;
+    renderer->UpdateTexture = SW_UpdateTexture;
+    renderer->LockTexture = SW_LockTexture;
+    renderer->UnlockTexture = SW_UnlockTexture;
+    renderer->DestroyTexture = SW_DestroyTexture;
+    renderer->RenderDrawPoints = SW_RenderDrawPoints;
+    renderer->RenderDrawLines = SW_RenderDrawLines;
+    renderer->RenderFillRects = SW_RenderFillRects;
+    renderer->RenderCopy = SW_RenderCopy;
+    renderer->RenderReadPixels = SW_RenderReadPixels;
+    renderer->RenderWritePixels = SW_RenderWritePixels;
+    renderer->RenderPresent = SW_RenderPresent;
+    renderer->DestroyRenderer = SW_DestroyRenderer;
+    renderer->info = SW_RenderDriver.info;
+    renderer->info.flags = 0;
+    renderer->window = window;
+    renderer->driverdata = data;
+
+    data->format = format;
+
+    /* Find a render driver that we can use to display data */
+    renderer_flags = 0;
+    if (flags & SDL_RENDERER_PRESENTVSYNC) {
+        renderer_flags |= SDL_RENDERER_PRESENTVSYNC;
+    }
+    desired_driver = SDL_getenv("SDL_VIDEO_RENDERER_SWDRIVER");
+    for (i = 0; i < SDL_GetNumRenderDrivers(); ++i) {
+        SDL_RendererInfo info;
+        SDL_GetRenderDriverInfo(i, &info);
+        if (SDL_strcmp(info.name, SW_RenderDriver.info.name) == 0) {
+            continue;
+        }
+        if (desired_driver
+            && SDL_strcasecmp(desired_driver, info.name) != 0) {
+            continue;
+        }
+        data->renderer = SDL_CreateRenderer(window, i, renderer_flags);
+        if (data->renderer) {
+            break;
+        }
+    }
+    if (i == SDL_GetNumRenderDrivers()) {
+        SW_DestroyRenderer(renderer);
+        SDL_SetError("Couldn't find display render driver");
+        return NULL;
+    }
+    if (data->renderer->info.flags & SDL_RENDERER_PRESENTVSYNC) {
+        renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
+    }
+
+    /* Create the textures we'll use for display */
+    data->texture =
+        CreateTexture(data->renderer, data->format, window->w, window->h);
+    if (!data->texture) {
+        SW_DestroyRenderer(renderer);
+        return NULL;
+    }
+
+    /* Create a surface we'll use for rendering */
+    data->surface.flags = SDL_PREALLOC;
+    data->surface.format = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
+    if (!data->surface.format) {
+        SW_DestroyRenderer(renderer);
+        return NULL;
+    }
+
+    return renderer;
+}
+
+static SDL_Texture *
+SW_ActivateRenderer(SDL_Renderer * renderer)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+    SDL_Window *window = renderer->window;
+
+    if (data->updateSize) {
+        /* Recreate the textures for the new window size */
+        if (data->texture) {
+            DestroyTexture(data->renderer, data->texture);
+        }
+        data->texture = CreateTexture(data->renderer, data->format,
+                                      window->w, window->h);
+        if (data->texture) {
+            data->updateSize = SDL_FALSE;
+        }
+    }
+    return data->texture;
+}
+
+static void
+SW_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+
+    if (event->event == SDL_WINDOWEVENT_RESIZED) {
+        data->updateSize = SDL_TRUE;
+    }
+}
+
+static int
+SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        texture->driverdata =
+            SDL_SW_CreateYUVTexture(texture->format, texture->w, texture->h);
+    } else {
+        int bpp;
+        Uint32 Rmask, Gmask, Bmask, Amask;
+
+        if (!SDL_PixelFormatEnumToMasks
+            (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
+            SDL_SetError("Unknown texture format");
+            return -1;
+        }
+
+        texture->driverdata =
+            SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
+                                 Bmask, Amask);
+        SDL_SetSurfaceColorMod(texture->driverdata, texture->r, texture->g,
+                               texture->b);
+        SDL_SetSurfaceAlphaMod(texture->driverdata, texture->a);
+        SDL_SetSurfaceBlendMode(texture->driverdata, texture->blendMode);
+
+        if (texture->access == SDL_TEXTUREACCESS_STATIC) {
+            SDL_SetSurfaceRLE(texture->driverdata, 1);
+        }
+    }
+
+    if (!texture->driverdata) {
+        return -1;
+    }
+    return 0;
+}
+
+static int
+SW_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
+                      void **pixels, int *pitch)
+{
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        return SDL_SW_QueryYUVTexturePixels((SDL_SW_YUVTexture *)
+                                            texture->driverdata, pixels,
+                                            pitch);
+    } else {
+        SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+
+        *pixels = surface->pixels;
+        *pitch = surface->pitch;
+        return 0;
+    }
+}
+
+static int
+SW_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+    return SDL_SetSurfaceColorMod(surface, texture->r, texture->g,
+                                  texture->b);
+}
+
+static int
+SW_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+    return SDL_SetSurfaceAlphaMod(surface, texture->a);
+}
+
+static int
+SW_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+    return SDL_SetSurfaceBlendMode(surface, texture->blendMode);
+}
+
+static int
+SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                 const SDL_Rect * rect, const void *pixels, int pitch)
+{
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        return SDL_SW_UpdateYUVTexture((SDL_SW_YUVTexture *)
+                                       texture->driverdata, rect, pixels,
+                                       pitch);
+    } else {
+        SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+        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;
+    }
+}
+
+static int
+SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+               const SDL_Rect * rect, int markDirty, void **pixels,
+               int *pitch)
+{
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        return SDL_SW_LockYUVTexture((SDL_SW_YUVTexture *)
+                                     texture->driverdata, rect, markDirty,
+                                     pixels, pitch);
+    } else {
+        SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+
+        *pixels =
+            (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
+                      rect->x * surface->format->BytesPerPixel);
+        *pitch = surface->pitch;
+        return 0;
+    }
+}
+
+static void
+SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        SDL_SW_UnlockYUVTexture((SDL_SW_YUVTexture *) texture->driverdata);
+    }
+}
+
+static int
+SW_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
+                    int count)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+    SDL_Texture *texture = SW_ActivateRenderer(renderer);
+    SDL_Rect rect;
+    int i;
+    int x, y;
+    int status = 0;
+
+    if (!texture) {
+        return -1;
+    }
+
+    /* Get the smallest rectangle that contains everything */
+    rect.x = 0;
+    rect.y = 0;
+    rect.w = texture->w;
+    rect.h = texture->h;
+    if (!SDL_EnclosePoints(points, count, &rect, &rect)) {
+        /* Nothing to draw */
+        return 0;
+    }
+
+    if (data->renderer->LockTexture(data->renderer, texture, &rect, 1,
+                                    &data->surface.pixels,
+                                    &data->surface.pitch) < 0) {
+        return -1;
+    }
+
+    data->surface.clip_rect.w = data->surface.w = rect.w;
+    data->surface.clip_rect.h = data->surface.h = rect.h;
+
+    /* Draw the points! */
+    if (renderer->blendMode == SDL_BLENDMODE_NONE) {
+        Uint32 color = SDL_MapRGBA(data->surface.format,
+                                   renderer->r, renderer->g, renderer->b,
+                                   renderer->a);
+
+        for (i = 0; i < count; ++i) {
+            x = points[i].x - rect.x;
+            y = points[i].y - rect.y;
+
+            status = SDL_DrawPoint(&data->surface, x, y, color);
+        }
+    } else {
+        for (i = 0; i < count; ++i) {
+            x = points[i].x - rect.x;
+            y = points[i].y - rect.y;
+
+            status = SDL_BlendPoint(&data->surface, x, y,
+                                    renderer->blendMode,
+                                    renderer->r, renderer->g, renderer->b,
+                                    renderer->a);
+        }
+    }
+
+    data->renderer->UnlockTexture(data->renderer, texture);
+
+    return status;
+}
+
+static int
+SW_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
+                   int count)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+    SDL_Texture *texture = SW_ActivateRenderer(renderer);
+    SDL_Rect clip, rect;
+    int i;
+    int x1, y1, x2, y2;
+    int status = 0;
+
+    if (!texture) {
+        return -1;
+    }
+
+    /* Get the smallest rectangle that contains everything */
+    clip.x = 0;
+    clip.y = 0;
+    clip.w = texture->w;
+    clip.h = texture->h;
+    SDL_EnclosePoints(points, count, NULL, &rect);
+    if (!SDL_IntersectRect(&rect, &clip, &rect)) {
+        /* Nothing to draw */
+        return 0;
+    }
+
+    if (data->renderer->LockTexture(data->renderer, texture, &rect, 1,
+                                    &data->surface.pixels,
+                                    &data->surface.pitch) < 0) {
+        return -1;
+    }
+
+    data->surface.clip_rect.w = data->surface.w = rect.w;
+    data->surface.clip_rect.h = data->surface.h = rect.h;
+
+    /* Draw the points! */
+    if (renderer->blendMode == SDL_BLENDMODE_NONE) {
+        Uint32 color = SDL_MapRGBA(data->surface.format,
+                                   renderer->r, renderer->g, renderer->b,
+                                   renderer->a);
+
+        for (i = 1; i < count; ++i) {
+            x1 = points[i-1].x - rect.x;
+            y1 = points[i-1].y - rect.y;
+            x2 = points[i].x - rect.x;
+            y2 = points[i].y - rect.y;
+
+            status = SDL_DrawLine(&data->surface, x1, y1, x2, y2, color);
+        }
+    } else {
+        for (i = 1; i < count; ++i) {
+            x1 = points[i-1].x - rect.x;
+            y1 = points[i-1].y - rect.y;
+            x2 = points[i].x - rect.x;
+            y2 = points[i].y - rect.y;
+
+            status = SDL_BlendLine(&data->surface, x1, y1, x2, y2,
+                                   renderer->blendMode,
+                                   renderer->r, renderer->g, renderer->b,
+                                   renderer->a);
+        }
+    }
+
+    data->renderer->UnlockTexture(data->renderer, texture);
+
+    return status;
+}
+
+static int
+SW_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
+                   int count)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+    SDL_Texture *texture = SW_ActivateRenderer(renderer);
+    SDL_Rect clip, rect;
+    Uint32 color = 0;
+    int i;
+    int status = 0;
+
+    if (!texture) {
+        return -1;
+    }
+
+    clip.x = 0;
+    clip.y = 0;
+    clip.w = texture->w;
+    clip.h = texture->h;
+
+    if (renderer->blendMode == SDL_BLENDMODE_NONE) {
+        color = SDL_MapRGBA(data->surface.format,
+                            renderer->r, renderer->g, renderer->b,
+                            renderer->a);
+    }
+
+    for (i = 0; i < count; ++i) {
+        if (!SDL_IntersectRect(rects[i], &clip, &rect)) {
+            /* Nothing to draw */
+            continue;
+        }
+
+        if (data->renderer->LockTexture(data->renderer, texture, &rect, 1,
+                                        &data->surface.pixels,
+                                        &data->surface.pitch) < 0) {
+            return -1;
+        }
+
+        data->surface.clip_rect.w = data->surface.w = rect.w;
+        data->surface.clip_rect.h = data->surface.h = rect.h;
+
+        if (renderer->blendMode == SDL_BLENDMODE_NONE) {
+            status = SDL_FillRect(&data->surface, NULL, color);
+        } else {
+            status = SDL_BlendFillRect(&data->surface, NULL,
+                                       renderer->blendMode,
+                                       renderer->r, renderer->g, renderer->b,
+                                       renderer->a);
+        }
+
+        data->renderer->UnlockTexture(data->renderer, texture);
+    }
+    return status;
+}
+
+static int
+SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+              const SDL_Rect * srcrect, const SDL_Rect * dstrect)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+    int status;
+
+    if (!SW_ActivateRenderer(renderer)) {
+        return -1;
+    }
+
+    if (data->renderer->LockTexture(data->renderer, data->texture,
+                                    dstrect, 1, &data->surface.pixels,
+                                    &data->surface.pitch) < 0) {
+        return -1;
+    }
+
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        status =
+            SDL_SW_CopyYUVToRGB((SDL_SW_YUVTexture *) texture->driverdata,
+                                srcrect, data->format, dstrect->w, dstrect->h,
+                                data->surface.pixels, data->surface.pitch);
+    } else {
+        SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+        SDL_Rect real_srcrect = *srcrect;
+        SDL_Rect real_dstrect;
+
+        data->surface.w = dstrect->w;
+        data->surface.h = dstrect->h;
+        data->surface.clip_rect.w = dstrect->w;
+        data->surface.clip_rect.h = dstrect->h;
+        real_dstrect = data->surface.clip_rect;
+
+        status =
+            SDL_LowerBlit(surface, &real_srcrect, &data->surface,
+                          &real_dstrect);
+    }
+    data->renderer->UnlockTexture(data->renderer, data->texture);
+    return status;
+}
+
+static int
+SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                    Uint32 format, void * pixels, int pitch)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+
+    if (!SW_ActivateRenderer(renderer)) {
+        return -1;
+    }
+
+    if (data->renderer->LockTexture(data->renderer, data->texture,
+                                    rect, 0, &data->surface.pixels,
+                                    &data->surface.pitch) < 0) {
+        return -1;
+    }
+
+    SDL_ConvertPixels(rect->w, rect->h,
+                      data->format, data->surface.pixels, data->surface.pitch,
+                      format, pixels, pitch);
+
+    data->renderer->UnlockTexture(data->renderer, data->texture);
+    return 0;
+}
+
+static int
+SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                     Uint32 format, const void * pixels, int pitch)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+
+    if (!SW_ActivateRenderer(renderer)) {
+        return -1;
+    }
+
+    if (data->renderer->LockTexture(data->renderer, data->texture,
+                                    rect, 1, &data->surface.pixels,
+                                    &data->surface.pitch) < 0) {
+        return -1;
+    }
+
+    SDL_ConvertPixels(rect->w, rect->h, format, pixels, pitch,
+                      data->format, data->surface.pixels, data->surface.pitch);
+
+    data->renderer->UnlockTexture(data->renderer, data->texture);
+    return 0;
+}
+
+static void
+SW_RenderPresent(SDL_Renderer * renderer)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+    SDL_Texture *texture = SW_ActivateRenderer(renderer);
+    SDL_Rect rect;
+
+    if (!texture) {
+        return;
+    }
+
+    /* Send the data to the display */
+    rect.x = 0;
+    rect.y = 0;
+    rect.w = texture->w;
+    rect.h = texture->h;
+    data->renderer->RenderCopy(data->renderer, texture, &rect, &rect);
+    data->renderer->RenderPresent(data->renderer);
+}
+
+static void
+SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        SDL_SW_DestroyYUVTexture((SDL_SW_YUVTexture *) texture->driverdata);
+    } else {
+        SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
+
+        SDL_FreeSurface(surface);
+    }
+}
+
+static void
+SW_DestroyRenderer(SDL_Renderer * renderer)
+{
+    SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
+    SDL_Window *window = renderer->window;
+
+    if (data) {
+        if (data->texture) {
+            DestroyTexture(data->renderer, data->texture);
+        }
+        if (data->surface.format) {
+            SDL_FreeFormat(data->surface.format);
+        }
+        if (data->renderer) {
+            data->renderer->DestroyRenderer(data->renderer);
+        }
+        SDL_FreeDirtyRects(&data->dirty);
+        SDL_free(data);
+    }
+    SDL_free(renderer);
+}
+
+/* vi: set ts=4 sw=4 expandtab: */