--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/win32/SDL_ceddrawrender.c	Sun Jun 07 02:44:46 2009 +0000
@@ -0,0 +1,831 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2009 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
+    
+    Stefan Klug
+    klug.stefan@gmx.de
+*/
+#include "SDL_config.h"
+
+#if SDL_VIDEO_RENDER_DDRAW
+
+#include "SDL_win32video.h"
+#include "../SDL_yuv_sw_c.h"
+
+#if 0
+#define DDRAW_LOG(...) printf(__VA_ARGS__)
+#else
+#define DDRAW_LOG(...)
+#endif
+
+
+/* DirectDraw renderer implementation */
+
+static SDL_Renderer *DDRAW_CreateRenderer(SDL_Window * window, Uint32 flags);
+static int DDRAW_DisplayModeChanged(SDL_Renderer * renderer);
+static int DDRAW_CreateTexture(SDL_Renderer * renderer,
+                               SDL_Texture * texture);
+static int DDRAW_QueryTexturePixels(SDL_Renderer * renderer,
+                                    SDL_Texture * texture, void **pixels,
+                                    int *pitch);
+static int DDRAW_SetTextureColorMod(SDL_Renderer * renderer,
+                                    SDL_Texture * texture);
+static int DDRAW_SetTextureAlphaMod(SDL_Renderer * renderer,
+                                    SDL_Texture * texture);
+static int DDRAW_SetTextureBlendMode(SDL_Renderer * renderer,
+                                     SDL_Texture * texture);
+static int DDRAW_SetTextureScaleMode(SDL_Renderer * renderer,
+                                     SDL_Texture * texture);
+static int DDRAW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                               const SDL_Rect * rect, const void *pixels,
+                               int pitch);
+static int DDRAW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                             const SDL_Rect * rect, int markDirty,
+                             void **pixels, int *pitch);
+static void DDRAW_UnlockTexture(SDL_Renderer * renderer,
+                                SDL_Texture * texture);
+static void DDRAW_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                               int numrects, const SDL_Rect * rects);
+static int DDRAW_RenderPoint(SDL_Renderer * renderer, int x, int y);
+static int DDRAW_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2,
+                            int y2);
+static int DDRAW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect);
+static int DDRAW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+                            const SDL_Rect * srcrect,
+                            const SDL_Rect * dstrect);
+static void DDRAW_RenderPresent(SDL_Renderer * renderer);
+static void DDRAW_DestroyTexture(SDL_Renderer * renderer,
+                                 SDL_Texture * texture);
+static void DDRAW_DestroyRenderer(SDL_Renderer * renderer);
+
+
+SDL_RenderDriver DDRAW_RenderDriver = {
+    DDRAW_CreateRenderer,
+    {
+     "ddraw",
+     (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
+      SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
+      SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED),
+     (SDL_TEXTUREMODULATE_NONE),
+     (SDL_BLENDMODE_NONE),
+     (SDL_TEXTURESCALEMODE_NONE),
+     0,
+     {0},
+     0,
+     0}
+};
+
+typedef struct
+{
+    IDirectDraw *ddraw;
+    IDirectDrawSurface *primary;
+} DDRAW_RenderData;
+
+typedef struct
+{
+    RECT lock;
+    IDirectDrawSurface *surface;
+} DDRAW_TextureData;
+
+
+static void
+DDRAW_SetError(const char *prefix, HRESULT result)
+{
+    const char *error;
+
+    switch (result) {
+    case DDERR_CANTCREATEDC:
+        error = "CANTCREATEDC";
+        break;
+    case DDERR_CANTLOCKSURFACE:
+        error = "CANTLOCKSURFACE";
+        break;
+    case DDERR_CLIPPERISUSINGHWND:
+        error = "CLIPPERISUSINGHWND";
+        break;
+    case DDERR_COLORKEYNOTSET:
+        error = "COLORKEYNOTSET";
+        break;
+    case DDERR_CURRENTLYNOTAVAIL:
+        error = "CURRENTLYNOTAVAIL";
+        break;
+    case DDERR_DCALREADYCREATED:
+        error = "DCALREADYCREATED";
+        break;
+    case DDERR_DEVICEDOESNTOWNSURFACE:
+        error = "DEVICEDOESNTOWNSURFACE";
+        break;
+    case DDERR_DIRECTDRAWALREADYCREATED:
+        error = "DIRECTDRAWALREADYCREATED";
+        break;
+    case DDERR_EXCLUSIVEMODEALREADYSET:
+        error = "EXCLUSIVEMODEALREADYSET";
+        break;
+    case DDERR_GENERIC:
+        error = "GENERIC";
+        break;
+    case DDERR_HEIGHTALIGN:
+        error = "HEIGHTALIGN";
+        break;
+    case DDERR_IMPLICITLYCREATED:
+        error = "IMPLICITLYCREATED";
+        break;
+    case DDERR_INCOMPATIBLEPRIMARY:
+        error = "INCOMPATIBLEPRIMARY";
+        break;
+    case DDERR_INVALIDCAPS:
+        error = "INVALIDCAPS";
+        break;
+    case DDERR_INVALIDCLIPLIST:
+        error = "INVALIDCLIPLIST";
+        break;
+    case DDERR_INVALIDMODE:
+        error = "INVALIDMODE";
+        break;
+    case DDERR_INVALIDOBJECT:
+        error = "INVALIDOBJECT";
+        break;
+    case DDERR_INVALIDPARAMS:
+        error = "INVALIDPARAMS";
+        break;
+    case DDERR_INVALIDPIXELFORMAT:
+        error = "INVALIDPIXELFORMAT";
+        break;
+    case DDERR_INVALIDPOSITION:
+        error = "INVALIDPOSITION";
+        break;
+    case DDERR_INVALIDRECT:
+        error = "INVALIDRECT";
+        break;
+    case DDERR_LOCKEDSURFACES:
+        error = "LOCKEDSURFACES";
+        break;
+    case DDERR_MOREDATA:
+        error = "MOREDATA";
+        break;
+    case DDERR_NOALPHAHW:
+        error = "NOALPHAHW";
+        break;
+    case DDERR_NOBLTHW:
+        error = "NOBLTHW";
+        break;
+    case DDERR_NOCLIPLIST:
+        error = "NOCLIPLIST";
+        break;
+    case DDERR_NOCLIPPERATTACHED:
+        error = "NOCLIPPERATTACHED";
+        break;
+    case DDERR_NOCOLORCONVHW:
+        error = "NOCOLORCONVHW";
+        break;
+    case DDERR_NOCOLORKEYHW:
+        error = "NOCOLORKEYHW";
+        break;
+    case DDERR_NOCOOPERATIVELEVELSET:
+        error = "NOCOOPERATIVELEVELSET";
+        break;
+    case DDERR_NODC:
+        error = "NODC";
+        break;
+    case DDERR_NOFLIPHW:
+        error = "NOFLIPHW";
+        break;
+    case DDERR_NOOVERLAYDEST:
+        error = "NOOVERLAYDEST";
+        break;
+    case DDERR_NOOVERLAYHW:
+        error = "NOOVERLAYHW";
+        break;
+    case DDERR_NOPALETTEATTACHED:
+        error = "NOPALETTEATTACHED";
+        break;
+    case DDERR_NOPALETTEHW:
+        error = "NOPALETTEHW";
+        break;
+    case DDERR_NORASTEROPHW:
+        error = "NORASTEROPHW";
+        break;
+    case DDERR_NOSTRETCHHW:
+        error = "NOSTRETCHHW";
+        break;
+    case DDERR_NOTAOVERLAYSURFACE:
+        error = "NOTAOVERLAYSURFACE";
+        break;
+    case DDERR_NOTFLIPPABLE:
+        error = "NOTFLIPPABLE";
+        break;
+    case DDERR_NOTFOUND:
+        error = "NOTFOUND";
+        break;
+    case DDERR_NOTLOCKED:
+        error = "NOTLOCKED";
+        break;
+    case DDERR_NOTPALETTIZED:
+        error = "NOTPALETTIZED";
+        break;
+    case DDERR_NOVSYNCHW:
+        error = "NOVSYNCHW";
+        break;
+    case DDERR_NOZOVERLAYHW:
+        error = "NOZOVERLAYHW";
+        break;
+    case DDERR_OUTOFCAPS:
+        error = "OUTOFCAPS";
+        break;
+    case DDERR_OUTOFMEMORY:
+        error = "OUTOFMEMORY";
+        break;
+    case DDERR_OUTOFVIDEOMEMORY:
+        error = "OUTOFVIDEOMEMORY";
+        break;
+    case DDERR_OVERLAPPINGRECTS:
+        error = "OVERLAPPINGRECTS";
+        break;
+    case DDERR_OVERLAYNOTVISIBLE:
+        error = "OVERLAYNOTVISIBLE";
+        break;
+    case DDERR_PALETTEBUSY:
+        error = "PALETTEBUSY";
+        break;
+    case DDERR_PRIMARYSURFACEALREADYEXISTS:
+        error = "PRIMARYSURFACEALREADYEXISTS";
+        break;
+    case DDERR_REGIONTOOSMALL:
+        error = "REGIONTOOSMALL";
+        break;
+    case DDERR_SURFACEBUSY:
+        error = "SURFACEBUSY";
+        break;
+    case DDERR_SURFACELOST:
+        error = "SURFACELOST";
+        break;
+    case DDERR_TOOBIGHEIGHT:
+        error = "TOOBIGHEIGHT";
+        break;
+    case DDERR_TOOBIGSIZE:
+        error = "TOOBIGSIZE";
+        break;
+    case DDERR_TOOBIGWIDTH:
+        error = "TOOBIGWIDTH";
+        break;
+    case DDERR_UNSUPPORTED:
+        error = "UNSUPPORTED";
+        break;
+    case DDERR_UNSUPPORTEDFORMAT:
+        error = "UNSUPPORTEDFORMAT";
+        break;
+    case DDERR_VERTICALBLANKINPROGRESS:
+        error = "VERTICALBLANKINPROGRESS";
+        break;
+    case DDERR_VIDEONOTACTIVE:
+        error = "VIDEONOTACTIVE";
+        break;
+    case DDERR_WASSTILLDRAWING:
+        error = "WASSTILLDRAWING";
+        break;
+    case DDERR_WRONGMODE:
+        error = "WRONGMODE";
+        break;
+    default:
+        error = "UNKNOWN";
+        break;
+    }
+    SDL_SetError("%s: %s", prefix, error);
+}
+
+static SDL_bool
+PixelFormatToDDPIXELFORMAT(Uint32 format, LPDDPIXELFORMAT dst)
+{
+    SDL_zerop(dst);
+    dst->dwSize = sizeof(*dst);
+
+    if (SDL_ISPIXELFORMAT_FOURCC(format)) {
+        dst->dwFlags = DDPF_FOURCC;
+        dst->dwFourCC = format;
+    } else if (SDL_ISPIXELFORMAT_INDEXED(format)) {
+        SDL_SetError("Indexed pixelformats are not supported.");
+        return SDL_FALSE;
+    } else {
+        int bpp;
+        Uint32 Rmask, Gmask, Bmask, Amask;
+        if (!SDL_PixelFormatEnumToMasks
+            (format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
+            SDL_SetError("pixelformat not supported");
+            return SDL_FALSE;
+        }
+
+        if (!Rmask && !Gmask && !Bmask) {
+            dst->dwFlags = DDPF_ALPHA;
+            dst->dwAlphaBitDepth = bpp;
+        } else {
+            dst->dwFlags = DDPF_RGB;
+            dst->dwRGBBitCount = bpp;
+            dst->dwRBitMask = Rmask;
+            dst->dwGBitMask = Gmask;
+            dst->dwBBitMask = Bmask;
+
+            if (Amask) {
+                dst->dwFlags |= DDPF_ALPHAPIXELS;
+                dst->dwRGBAlphaBitMask = Amask;
+            }
+        }
+    }
+
+    return SDL_TRUE;
+}
+
+static SDL_bool
+DDRAW_IsTextureFormatAvailable(IDirectDraw * ddraw, Uint32 display_format,
+                               Uint32 texture_format)
+{
+    int bpp;
+    Uint32 Rmask, Gmask, Bmask, Amask;
+
+    if (SDL_ISPIXELFORMAT_FOURCC(texture_format)) {
+        //TODO I don't expect DDRAW to support all 4CC formats, but I don't know which ones
+        return SDL_TRUE;
+    }
+    //These are only basic checks
+    if (SDL_ISPIXELFORMAT_INDEXED(texture_format)) {
+        return SDL_FALSE;
+    }
+
+    if (!SDL_PixelFormatEnumToMasks
+        (texture_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
+        return SDL_FALSE;
+    }
+
+    switch (bpp) {
+    case 4:
+    case 8:
+    case 16:
+    case 24:
+    case 32:
+        break;
+    default:
+        return SDL_FALSE;
+    }
+
+    return SDL_TRUE;
+}
+
+void
+DDRAW_AddRenderDriver(_THIS)
+{
+    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
+    SDL_RendererInfo *info = &DDRAW_RenderDriver.info;
+    SDL_DisplayMode *mode = &SDL_CurrentDisplay.desktop_mode;
+
+    if (data->ddraw) {
+        int i;
+        int formats[] = {
+            SDL_PIXELFORMAT_INDEX8,
+            SDL_PIXELFORMAT_RGB332,
+            SDL_PIXELFORMAT_RGB444,
+            SDL_PIXELFORMAT_RGB555,
+            SDL_PIXELFORMAT_ARGB4444,
+            SDL_PIXELFORMAT_ARGB1555,
+            SDL_PIXELFORMAT_RGB565,
+            SDL_PIXELFORMAT_RGB888,
+            SDL_PIXELFORMAT_ARGB8888,
+            SDL_PIXELFORMAT_ARGB2101010,
+        };
+
+        for (i = 0; i < SDL_arraysize(formats); ++i) {
+            if (DDRAW_IsTextureFormatAvailable
+                (data->ddraw, mode->format, formats[i])) {
+                info->texture_formats[info->num_texture_formats++] =
+                    formats[i];
+            }
+        }
+
+        //TODO the fourcc formats should get fetched from IDirectDraw::GetFourCCCodes
+        info->texture_formats[info->num_texture_formats++] =
+            SDL_PIXELFORMAT_YV12;
+        info->texture_formats[info->num_texture_formats++] =
+            SDL_PIXELFORMAT_IYUV;
+        info->texture_formats[info->num_texture_formats++] =
+            SDL_PIXELFORMAT_YUY2;
+        info->texture_formats[info->num_texture_formats++] =
+            SDL_PIXELFORMAT_UYVY;
+        info->texture_formats[info->num_texture_formats++] =
+            SDL_PIXELFORMAT_YVYU;
+
+        SDL_AddRenderDriver(0, &DDRAW_RenderDriver);
+    }
+}
+
+SDL_Renderer *
+DDRAW_CreateRenderer(SDL_Window * window, Uint32 flags)
+{
+    SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
+    SDL_VideoData *videodata = (SDL_VideoData *) display->device->driverdata;
+    SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
+    SDL_Renderer *renderer;
+    DDRAW_RenderData *data;
+    HRESULT result;
+    DDSURFACEDESC ddsd;
+
+    renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
+    if (!renderer) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    data = (DDRAW_RenderData *) SDL_calloc(1, sizeof(*data));
+    if (!data) {
+        DDRAW_DestroyRenderer(renderer);
+        SDL_OutOfMemory();
+        return NULL;
+    }
+    data->ddraw = videodata->ddraw;
+
+    renderer->DisplayModeChanged = DDRAW_DisplayModeChanged;
+    renderer->CreateTexture = DDRAW_CreateTexture;
+    renderer->QueryTexturePixels = DDRAW_QueryTexturePixels;
+
+    renderer->SetTextureColorMod = DDRAW_SetTextureColorMod;
+    renderer->SetTextureAlphaMod = DDRAW_SetTextureAlphaMod;
+    renderer->SetTextureBlendMode = DDRAW_SetTextureBlendMode;
+    renderer->SetTextureScaleMode = DDRAW_SetTextureScaleMode;
+    renderer->UpdateTexture = DDRAW_UpdateTexture;
+    renderer->LockTexture = DDRAW_LockTexture;
+    renderer->UnlockTexture = DDRAW_UnlockTexture;
+    renderer->DirtyTexture = DDRAW_DirtyTexture;
+    renderer->RenderPoint = DDRAW_RenderPoint;
+    renderer->RenderLine = DDRAW_RenderLine;
+    renderer->RenderFill = DDRAW_RenderFill;
+    renderer->RenderCopy = DDRAW_RenderCopy;
+    renderer->RenderPresent = DDRAW_RenderPresent;
+    renderer->DestroyTexture = DDRAW_DestroyTexture;
+    renderer->DestroyRenderer = DDRAW_DestroyRenderer;
+    renderer->info = DDRAW_RenderDriver.info;
+    renderer->window = window->id;
+    renderer->driverdata = data;
+
+    renderer->info.flags = SDL_RENDERER_ACCELERATED;
+
+    SDL_zero(ddsd);
+    ddsd.dwSize = sizeof(ddsd);
+    ddsd.dwFlags = DDSD_CAPS;
+
+    if (window->flags & SDL_WINDOW_FULLSCREEN) {
+        ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
+    } else {
+        //TODO handle non fullscreen
+        SDL_SetError("DirectDraw renderer has only fullscreen implemented");
+        DDRAW_DestroyRenderer(renderer);
+        return NULL;
+    }
+
+    if (flags & SDL_RENDERER_PRESENTFLIP2) {
+        ddsd.dwFlags |= DDSD_BACKBUFFERCOUNT;
+        ddsd.dwBackBufferCount = 2;
+    } else if (flags & SDL_RENDERER_PRESENTFLIP3) {
+        ddsd.dwFlags |= DDSD_BACKBUFFERCOUNT;
+        ddsd.dwBackBufferCount = 3;
+    } else if (flags & SDL_RENDERER_PRESENTCOPY) {
+        //TODO what is the best approximation to this mode
+    } else {
+
+    }
+
+    if (flags & SDL_RENDERER_PRESENTVSYNC) {
+        SDL_SetError("DirectDraw renderer with v-sync is not implemented");
+        DDRAW_DestroyRenderer(renderer);
+        return NULL;
+    }
+
+    result =
+        data->ddraw->lpVtbl->SetCooperativeLevel(data->ddraw,
+                                                 windowdata->hwnd,
+                                                 DDSCL_NORMAL);
+    if (result != DD_OK) {
+        DDRAW_SetError("CreateDevice()", result);
+        DDRAW_DestroyRenderer(renderer);
+        return NULL;
+    }
+
+    result =
+        data->ddraw->lpVtbl->CreateSurface(data->ddraw, &ddsd, &data->primary,
+                                           NULL);
+    if (result != DD_OK) {
+        DDRAW_SetError("CreateDevice()", result);
+        DDRAW_DestroyRenderer(renderer);
+        return NULL;
+    }
+
+    return renderer;
+}
+
+static int
+DDRAW_Reset(SDL_Renderer * renderer)
+{
+    //TODO implement
+    /*D3D_RenderData *data = (D3D_RenderData *) renderer->driverdata;
+       HRESULT result;
+
+       result = IDirect3DDevice9_Reset(data->device, &data->pparams);
+       if (FAILED(result)) {
+       if (result == D3DERR_DEVICELOST) {
+       /* Don't worry about it, we'll reset later... *
+       return 0;
+       } else {
+       D3D_SetError("Reset()", result);
+       return -1;
+       }
+       }
+       IDirect3DDevice9_SetVertexShader(data->device, NULL);
+       IDirect3DDevice9_SetFVF(data->device,
+       D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX1);
+       IDirect3DDevice9_SetRenderState(data->device, D3DRS_CULLMODE,
+       D3DCULL_NONE);
+       IDirect3DDevice9_SetRenderState(data->device, D3DRS_LIGHTING, FALSE); */
+    return 0;
+}
+
+static int
+DDRAW_DisplayModeChanged(SDL_Renderer * renderer)
+{
+    //TODO implement
+    /*D3D_RenderData *data = (D3D_RenderData *) renderer->driverdata;
+       SDL_Window *window = SDL_GetWindowFromID(renderer->window);
+       SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
+
+       data->pparams.BackBufferWidth = window->w;
+       data->pparams.BackBufferHeight = window->h;
+       if (window->flags & SDL_WINDOW_FULLSCREEN) {
+       data->pparams.BackBufferFormat =
+       PixelFormatToD3DFMT(display->fullscreen_mode.format);
+       } else {
+       data->pparams.BackBufferFormat = D3DFMT_UNKNOWN;
+       }
+       return D3D_Reset(renderer); */
+    return 0;
+}
+
+static int
+DDRAW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    DDRAW_RenderData *renderdata = (DDRAW_RenderData *) renderer->driverdata;
+    SDL_Window *window = SDL_GetWindowFromID(renderer->window);
+    SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
+    Uint32 display_format = display->current_mode.format;
+    DDRAW_TextureData *data;
+    DDSURFACEDESC ddsd;
+    HRESULT result;
+
+    data = (DDRAW_TextureData *) SDL_calloc(1, sizeof(*data));
+    if (!data) {
+        SDL_OutOfMemory();
+        return -1;
+    }
+
+    SDL_zero(ddsd);
+    ddsd.dwSize = sizeof(ddsd);
+    ddsd.dwFlags = DDSD_PIXELFORMAT | DDSD_HEIGHT | DDSD_WIDTH;
+    ddsd.dwWidth = texture->w;
+    ddsd.dwHeight = texture->h;
+
+
+    if (!PixelFormatToDDPIXELFORMAT(texture->format, &ddsd.ddpfPixelFormat)) {
+        SDL_free(data);
+        return -1;
+    }
+
+    texture->driverdata = data;
+
+    result =
+        renderdata->ddraw->lpVtbl->CreateSurface(renderdata->ddraw, &ddsd,
+                                                 &data->surface, NULL);
+    if (result != DD_OK) {
+        SDL_free(data);
+        DDRAW_SetError("CreateTexture", result);
+        return -1;
+    }
+
+    return 0;
+}
+
+static int
+DDRAW_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
+                         void **pixels, int *pitch)
+{
+    //TODO implement
+    SDL_SetError("QueryTexturePixels is not implemented");
+    return -1;
+}
+
+static int
+DDRAW_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    return 0;
+}
+
+static int
+DDRAW_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    return 0;
+}
+
+static int
+DDRAW_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    switch (texture->blendMode) {
+    case SDL_BLENDMODE_NONE:
+        return 0;
+    default:
+        SDL_Unsupported();
+        texture->blendMode = SDL_BLENDMODE_NONE;
+        return -1;
+    }
+}
+
+static int
+DDRAW_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    switch (texture->scaleMode) {
+    case SDL_TEXTURESCALEMODE_NONE:
+    default:
+        SDL_Unsupported();
+        texture->scaleMode = SDL_TEXTURESCALEMODE_NONE;
+        return -1;
+    }
+    return 0;
+}
+
+static int
+DDRAW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                    const SDL_Rect * rect, const void *pixels, int pitch)
+{
+    DDRAW_TextureData *data = (DDRAW_TextureData *) texture->driverdata;
+
+    //TODO implement
+    SDL_SetError("UpdateTexture is not implemented");
+    return 0;
+}
+
+static int
+DDRAW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                  const SDL_Rect * rect, int markDirty, void **pixels,
+                  int *pitch)
+{
+    DDRAW_TextureData *data = (DDRAW_TextureData *) texture->driverdata;
+    HRESULT result;
+    DDSURFACEDESC ddsd;
+
+    SDL_zero(ddsd);
+    ddsd.dwSize = sizeof(ddsd);
+
+    /**
+     * On a Axim x51v locking a subrect returns the startaddress of the whole surface,
+     * wheras on my ASUS MyPal 696 the startaddress of the locked area is returned,
+     * thats why I always lock the whole surface and calculate the pixels pointer by hand.
+     * This shouldn't be a speed problem, as multiple locks aren't available on DDraw Mobile
+     * see http://msdn.microsoft.com/en-us/library/ms858221.aspx
+     */
+
+    result = data->surface->lpVtbl->Lock(data->surface, NULL, &ddsd, 0, NULL);
+    if (result != DD_OK) {
+        DDRAW_SetError("LockRect()", result);
+        return -1;
+    }
+
+    *pixels = ddsd.lpSurface + rect->y * ddsd.lPitch + rect->x * ddsd.lXPitch;
+    *pitch = ddsd.lPitch;
+    return 0;
+}
+
+static void
+DDRAW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    DDRAW_TextureData *data = (DDRAW_TextureData *) texture->driverdata;
+
+    data->surface->lpVtbl->Unlock(data->surface, NULL);
+}
+
+static void
+DDRAW_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                   int numrects, const SDL_Rect * rects)
+{
+}
+
+static void
+DDRAW_SetBlendMode(DDRAW_RenderData * data, int blendMode)
+{
+    switch (blendMode) {
+
+    }
+}
+
+static int
+DDRAW_RenderPoint(SDL_Renderer * renderer, int x, int y)
+{
+    return -1;
+}
+
+static int
+DDRAW_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, int y2)
+{
+    return -1;
+}
+
+static int
+DDRAW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect)
+{
+    return -1;
+}
+
+static int
+DDRAW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+                 const SDL_Rect * srcrect, const SDL_Rect * dstrect)
+{
+    DDRAW_RenderData *data = (DDRAW_RenderData *) renderer->driverdata;
+    DDRAW_TextureData *texturedata =
+        (DDRAW_TextureData *) texture->driverdata;
+    HRESULT result;
+    RECT srcr;
+    RECT dstr;
+    DDBLTFX bltfx;
+
+    srcr.left = srcrect->x;
+    srcr.top = srcrect->y;
+    srcr.right = srcrect->x + srcrect->w;
+    srcr.bottom = srcrect->y + srcrect->h;
+
+    dstr.left = dstrect->x;
+    dstr.top = dstrect->y;
+    dstr.right = dstrect->x + dstrect->w;
+    dstr.bottom = dstrect->y + dstrect->h;
+
+    SDL_zero(bltfx);
+    bltfx.dwSize = sizeof(bltfx);
+    bltfx.dwROP = SRCCOPY;
+
+    data->primary->lpVtbl->Blt(data->primary, &dstr, texturedata->surface,
+                               &srcr, DDBLT_ROP, &bltfx);
+
+    return 0;
+}
+
+static void
+DDRAW_RenderPresent(SDL_Renderer * renderer)
+{
+    DDRAW_RenderData *data = (DDRAW_RenderData *) renderer->driverdata;
+    HRESULT result;
+
+    return;
+
+    result =
+        data->primary->lpVtbl->Flip(data->primary, NULL, DDFLIP_INTERVAL1);
+    if (result != DD_OK) {
+        DDRAW_SetError("Present()", result);
+    }
+}
+
+static void
+DDRAW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    DDRAW_TextureData *data = (DDRAW_TextureData *) texture->driverdata;
+
+    if (!data) {
+        return;
+    }
+
+    data->surface->lpVtbl->Release(data->surface);
+    SDL_free(data);
+    texture->driverdata = NULL;
+}
+
+static void
+DDRAW_DestroyRenderer(SDL_Renderer * renderer)
+{
+    DDRAW_RenderData *data = (DDRAW_RenderData *) renderer->driverdata;
+
+    if (data) {
+        data->primary->lpVtbl->Release(data->primary);
+        SDL_free(data);
+    }
+    SDL_free(renderer);
+}
+
+#endif /* SDL_VIDEO_RENDER_DDRAW */
+
+/* vi: set ts=4 sw=4 expandtab: */