--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/windows/SDL_gdirender.c	Thu Jan 20 18:04:05 2011 -0800
@@ -0,0 +1,1127 @@
+/*
+    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"
+
+#if SDL_VIDEO_RENDER_GDI
+
+#include "SDL_windowsvideo.h"
+#include "../SDL_rect_c.h"
+#include "../SDL_yuv_sw_c.h"
+#include "../SDL_alphamult.h"
+
+#ifdef _WIN32_WCE
+#define NO_GETDIBBITS 1
+#endif
+
+/* GDI renderer implementation */
+
+static SDL_Renderer *GDI_CreateRenderer(SDL_Window * window, Uint32 flags);
+static int GDI_DisplayModeChanged(SDL_Renderer * renderer);
+static int GDI_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
+static int GDI_QueryTexturePixels(SDL_Renderer * renderer,
+                                  SDL_Texture * texture, void **pixels,
+                                  int *pitch);
+static int GDI_SetTexturePalette(SDL_Renderer * renderer,
+                                 SDL_Texture * texture,
+                                 const SDL_Color * colors, int firstcolor,
+                                 int ncolors);
+static int GDI_GetTexturePalette(SDL_Renderer * renderer,
+                                 SDL_Texture * texture, SDL_Color * colors,
+                                 int firstcolor, int ncolors);
+static int GDI_SetTextureAlphaMod(SDL_Renderer * renderer,
+                                  SDL_Texture * texture);
+static int GDI_SetTextureBlendMode(SDL_Renderer * renderer,
+                                   SDL_Texture * texture);
+static int GDI_SetTextureScaleMode(SDL_Renderer * renderer,
+                                   SDL_Texture * texture);
+static int GDI_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                             const SDL_Rect * rect, const void *pixels,
+                             int pitch);
+static int GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                           const SDL_Rect * rect, int markDirty,
+                           void **pixels, int *pitch);
+static void GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
+static int GDI_SetDrawBlendMode(SDL_Renderer * renderer);
+static int GDI_RenderDrawPoints(SDL_Renderer * renderer,
+                                const SDL_Point * points, int count);
+static int GDI_RenderDrawLines(SDL_Renderer * renderer,
+                               const SDL_Point * points, int count);
+static int GDI_RenderDrawRects(SDL_Renderer * renderer,
+                               const SDL_Rect ** rects, int count);
+static int GDI_RenderFillRects(SDL_Renderer * renderer,
+                               const SDL_Rect ** rects, int count);
+static int GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+                          const SDL_Rect * srcrect, const SDL_Rect * dstrect);
+static int GDI_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                                Uint32 format, void * pixels, int pitch);
+static int GDI_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                                 Uint32 format, const void * pixels, int pitch);
+static void GDI_RenderPresent(SDL_Renderer * renderer);
+static void GDI_DestroyTexture(SDL_Renderer * renderer,
+                               SDL_Texture * texture);
+static void GDI_DestroyRenderer(SDL_Renderer * renderer);
+
+
+SDL_RenderDriver GDI_RenderDriver = {
+    GDI_CreateRenderer,
+    {
+     "gdi",
+     (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
+      SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
+      SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED),
+     (SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_ALPHA),
+     (SDL_BLENDMODE_NONE | SDL_BLENDMODE_MASK),
+     (SDL_SCALEMODE_NONE | SDL_SCALEMODE_FAST),
+     14,
+     {
+      SDL_PIXELFORMAT_INDEX8,
+      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
+{
+    HWND hwnd;
+    HDC window_hdc;
+    HDC render_hdc;
+    HDC memory_hdc;
+    HDC current_hdc;
+#ifndef NO_GETDIBBITS
+    LPBITMAPINFO bmi;
+#endif
+    HBITMAP hbm[3];
+    int current_hbm;
+    SDL_DirtyRectList dirty;
+    SDL_bool makedirty;
+} GDI_RenderData;
+
+typedef struct
+{
+    SDL_SW_YUVTexture *yuv;
+    Uint32 format;
+    HPALETTE hpal;
+    HBITMAP hbm;
+    void *pixels;
+    int pitch;
+    SDL_bool premultiplied;
+} GDI_TextureData;
+
+static void
+UpdateYUVTextureData(SDL_Texture * texture)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+    SDL_Rect rect;
+
+    rect.x = 0;
+    rect.y = 0;
+    rect.w = texture->w;
+    rect.h = texture->h;
+    SDL_SW_CopyYUVToRGB(data->yuv, &rect, data->format, texture->w,
+                        texture->h, data->pixels, data->pitch);
+}
+
+void
+GDI_AddRenderDriver(_THIS)
+{
+    int i;
+    for (i = 0; i < _this->num_displays; ++i) {
+        SDL_AddRenderDriver(&_this->displays[i], &GDI_RenderDriver);
+    }
+}
+
+SDL_Renderer *
+GDI_CreateRenderer(SDL_Window * window, Uint32 flags)
+{
+    SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
+    SDL_Renderer *renderer;
+    GDI_RenderData *data;
+    int bmi_size;
+    HBITMAP hbm;
+    int i, n;
+
+    renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
+    if (!renderer) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    data = (GDI_RenderData *) SDL_calloc(1, sizeof(*data));
+    if (!data) {
+        GDI_DestroyRenderer(renderer);
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    windowdata->videodata->render = RENDER_GDI;
+
+    renderer->DisplayModeChanged = GDI_DisplayModeChanged;
+    renderer->CreateTexture = GDI_CreateTexture;
+    renderer->QueryTexturePixels = GDI_QueryTexturePixels;
+    renderer->SetTexturePalette = GDI_SetTexturePalette;
+    renderer->GetTexturePalette = GDI_GetTexturePalette;
+    renderer->SetTextureAlphaMod = GDI_SetTextureAlphaMod;
+    renderer->SetTextureBlendMode = GDI_SetTextureBlendMode;
+    renderer->SetTextureScaleMode = GDI_SetTextureScaleMode;
+    renderer->UpdateTexture = GDI_UpdateTexture;
+    renderer->LockTexture = GDI_LockTexture;
+    renderer->UnlockTexture = GDI_UnlockTexture;
+    renderer->SetDrawBlendMode = GDI_SetDrawBlendMode;
+    renderer->RenderDrawPoints = GDI_RenderDrawPoints;
+    renderer->RenderDrawLines = GDI_RenderDrawLines;
+    renderer->RenderDrawRects = GDI_RenderDrawRects;
+    renderer->RenderFillRects = GDI_RenderFillRects;
+    renderer->RenderCopy = GDI_RenderCopy;
+    renderer->RenderReadPixels = GDI_RenderReadPixels;
+    renderer->RenderWritePixels = GDI_RenderWritePixels;
+    renderer->RenderPresent = GDI_RenderPresent;
+    renderer->DestroyTexture = GDI_DestroyTexture;
+    renderer->DestroyRenderer = GDI_DestroyRenderer;
+    renderer->info = GDI_RenderDriver.info;
+    renderer->window = window;
+    renderer->driverdata = data;
+
+    renderer->info.flags = SDL_RENDERER_ACCELERATED;
+
+    data->hwnd = windowdata->hwnd;
+    data->window_hdc = windowdata->hdc;
+    data->render_hdc = CreateCompatibleDC(data->window_hdc);
+    data->memory_hdc = CreateCompatibleDC(data->window_hdc);
+
+#ifndef NO_GETDIBBITS
+    /* Fill in the compatible bitmap info */
+    bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
+    data->bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
+    if (!data->bmi) {
+        GDI_DestroyRenderer(renderer);
+        SDL_OutOfMemory();
+        return NULL;
+    }
+    data->bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+
+    hbm = CreateCompatibleBitmap(data->window_hdc, 1, 1);
+    GetDIBits(data->window_hdc, hbm, 0, 1, NULL, data->bmi, DIB_RGB_COLORS);
+    GetDIBits(data->window_hdc, hbm, 0, 1, NULL, data->bmi, DIB_RGB_COLORS);
+    DeleteObject(hbm);
+#endif
+
+    if (flags & SDL_RENDERER_SINGLEBUFFER) {
+        renderer->info.flags |=
+            (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY);
+        n = 0;
+    } else if (flags & SDL_RENDERER_PRESENTFLIP2) {
+        renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
+        n = 2;
+    } else if (flags & SDL_RENDERER_PRESENTFLIP3) {
+        renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
+        n = 3;
+    } else {
+        renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
+        n = 1;
+    }
+    for (i = 0; i < n; ++i) {
+        data->hbm[i] =
+            CreateCompatibleBitmap(data->window_hdc, window->w, window->h);
+        if (!data->hbm[i]) {
+            GDI_DestroyRenderer(renderer);
+            WIN_SetError("CreateCompatibleBitmap()");
+            return NULL;
+        }
+    }
+    if (n > 0) {
+        SelectObject(data->render_hdc, data->hbm[0]);
+        data->current_hdc = data->render_hdc;
+        data->makedirty = SDL_TRUE;
+    } else {
+        data->current_hdc = data->window_hdc;
+        data->makedirty = SDL_FALSE;
+    }
+    data->current_hbm = 0;
+
+#ifdef _WIN32_WCE
+    // check size for GDI fullscreen and rotate
+    if((window->flags & SDL_WINDOW_FULLSCREEN) &&
+        GetSystemMetrics(SM_CXSCREEN) != GetSystemMetrics(SM_CYSCREEN) &&
+        ((GetSystemMetrics(SM_CXSCREEN) < GetSystemMetrics(SM_CYSCREEN) && window->w > window->h) ||
+         (GetSystemMetrics(SM_CXSCREEN) > GetSystemMetrics(SM_CYSCREEN) && window->w < window->h)))
+    {
+	int orientation = WINCE_GetDMOrientation();
+	switch(orientation)
+	{
+	    case DMDO_0:   orientation = DMDO_90; break;
+	    case DMDO_270: orientation = DMDO_180; break;
+	    case DMDO_90:  orientation = DMDO_0; break;
+	    case DMDO_180: orientation = DMDO_270; break;
+
+	    default:
+		GDI_DestroyRenderer(renderer);
+		return NULL;
+	}
+
+	if(0 > WINCE_SetDMOrientation(orientation))
+	{
+	    GDI_DestroyRenderer(renderer);
+	    return NULL;
+	}
+    }
+#endif
+
+    return renderer;
+}
+
+static int
+GDI_DisplayModeChanged(SDL_Renderer * renderer)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    SDL_Window *window = renderer->window;
+    int i, n;
+
+    if (renderer->info.flags & SDL_RENDERER_SINGLEBUFFER) {
+        n = 0;
+    } else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
+        n = 2;
+    } else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
+        n = 3;
+    } else {
+        n = 1;
+    }
+    for (i = 0; i < n; ++i) {
+        if (data->hbm[i]) {
+            DeleteObject(data->hbm[i]);
+            data->hbm[i] = NULL;
+        }
+    }
+    for (i = 0; i < n; ++i) {
+        data->hbm[i] =
+            CreateCompatibleBitmap(data->window_hdc, window->w, window->h);
+        if (!data->hbm[i]) {
+            WIN_SetError("CreateCompatibleBitmap()");
+            return -1;
+        }
+    }
+    if (n > 0) {
+        SelectObject(data->render_hdc, data->hbm[0]);
+    }
+    data->current_hbm = 0;
+
+    return 0;
+}
+
+static HBITMAP
+GDI_CreateDIBSection(HDC hdc, int w, int h, int pitch, Uint32 format,
+                     HPALETTE * hpal, void ** pixels)
+{
+    int bmi_size;
+    LPBITMAPINFO bmi;
+
+    bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
+    bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
+    if (!bmi) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+    bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    bmi->bmiHeader.biWidth = w;
+    bmi->bmiHeader.biHeight = -h;  /* topdown bitmap */
+    bmi->bmiHeader.biPlanes = 1;
+    bmi->bmiHeader.biSizeImage = h * pitch;
+    bmi->bmiHeader.biXPelsPerMeter = 0;
+    bmi->bmiHeader.biYPelsPerMeter = 0;
+    bmi->bmiHeader.biClrUsed = 0;
+    bmi->bmiHeader.biClrImportant = 0;
+    bmi->bmiHeader.biBitCount = SDL_BYTESPERPIXEL(format) * 8;
+    if (SDL_ISPIXELFORMAT_INDEXED(format)) {
+        bmi->bmiHeader.biCompression = BI_RGB;
+        if (hpal) {
+            int i, ncolors;
+            LOGPALETTE *palette;
+
+            ncolors = (1 << SDL_BITSPERPIXEL(format));
+            palette =
+                (LOGPALETTE *) SDL_malloc(sizeof(*palette) +
+                                          ncolors * sizeof(PALETTEENTRY));
+            if (!palette) {
+                SDL_free(bmi);
+                SDL_OutOfMemory();
+                return NULL;
+            }
+            palette->palVersion = 0x300;
+            palette->palNumEntries = ncolors;
+            for (i = 0; i < ncolors; ++i) {
+                palette->palPalEntry[i].peRed = 0xFF;
+                palette->palPalEntry[i].peGreen = 0xFF;
+                palette->palPalEntry[i].peBlue = 0xFF;
+                palette->palPalEntry[i].peFlags = 0;
+            }
+            *hpal = CreatePalette(palette);
+            SDL_free(palette);
+        }
+    } else {
+        int bpp;
+        Uint32 Rmask, Gmask, Bmask, Amask;
+
+        bmi->bmiHeader.biCompression = BI_BITFIELDS;
+        SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask,
+                                   &Amask);
+        ((Uint32 *) bmi->bmiColors)[0] = Rmask;
+        ((Uint32 *) bmi->bmiColors)[1] = Gmask;
+        ((Uint32 *) bmi->bmiColors)[2] = Bmask;
+        if (hpal) {
+            *hpal = NULL;
+        }
+    }
+    return CreateDIBSection(hdc, bmi, DIB_RGB_COLORS, pixels, NULL, 0);
+}
+
+static int
+GDI_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
+    SDL_Window *window = renderer->window;
+    SDL_VideoDisplay *display = window->display;
+    GDI_TextureData *data;
+
+    data = (GDI_TextureData *) SDL_calloc(1, sizeof(*data));
+    if (!data) {
+        SDL_OutOfMemory();
+        return -1;
+    }
+
+    texture->driverdata = data;
+
+    if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+        data->yuv =
+            SDL_SW_CreateYUVTexture(texture->format, texture->w, texture->h);
+        if (!data->yuv) {
+            return -1;
+        }
+        data->format = display->current_mode.format;
+    } else {
+        data->format = texture->format;
+    }
+    data->pitch = (texture->w * SDL_BYTESPERPIXEL(data->format));
+
+    if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING
+        || texture->format != display->current_mode.format) {
+        data->hbm = GDI_CreateDIBSection(renderdata->memory_hdc,
+                                         texture->w, texture->h,
+                                         data->pitch, data->format,
+                                         &data->hpal, &data->pixels);
+    } else {
+        data->hbm = CreateCompatibleBitmap(renderdata->window_hdc,
+                                           texture->w, texture->h);
+    }
+    if (!data->hbm) {
+        WIN_SetError("Couldn't create bitmap");
+        return -1;
+    }
+
+    return 0;
+}
+
+static int
+GDI_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
+                       void **pixels, int *pitch)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    if (data->yuv) {
+        return SDL_SW_QueryYUVTexturePixels(data->yuv, pixels, pitch);
+    } else {
+        *pixels = data->pixels;
+        *pitch = data->pitch;
+        return 0;
+    }
+}
+
+static int
+GDI_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
+                      const SDL_Color * colors, int firstcolor, int ncolors)
+{
+    GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    if (data->yuv) {
+        SDL_SetError("YUV textures don't have a palette");
+        return -1;
+    } else {
+        PALETTEENTRY entries[256];
+        int i;
+
+        for (i = 0; i < ncolors; ++i) {
+            entries[i].peRed = colors[i].r;
+            entries[i].peGreen = colors[i].g;
+            entries[i].peBlue = colors[i].b;
+            entries[i].peFlags = 0;
+        }
+        if (!SetPaletteEntries(data->hpal, firstcolor, ncolors, entries)) {
+            WIN_SetError("SetPaletteEntries()");
+            return -1;
+        }
+        return 0;
+    }
+}
+
+static int
+GDI_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
+                      SDL_Color * colors, int firstcolor, int ncolors)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    if (data->yuv) {
+        SDL_SetError("YUV textures don't have a palette");
+        return -1;
+    } else {
+        PALETTEENTRY entries[256];
+        int i;
+
+        if (!GetPaletteEntries(data->hpal, firstcolor, ncolors, entries)) {
+            WIN_SetError("GetPaletteEntries()");
+            return -1;
+        }
+        for (i = 0; i < ncolors; ++i) {
+            colors[i].r = entries[i].peRed;
+            colors[i].g = entries[i].peGreen;
+            colors[i].b = entries[i].peBlue;
+        }
+        return 0;
+    }
+}
+
+static int
+GDI_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    return 0;
+}
+
+static int
+GDI_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    switch (texture->blendMode) {
+    case SDL_BLENDMODE_NONE:
+        if (data->premultiplied) {
+            /* Crap, we've lost the original pixel data... *sigh* */
+        }
+        return 0;
+#ifndef _WIN32_WCE              /* WinCE has no alphablend */
+    case SDL_BLENDMODE_MASK:
+    case SDL_BLENDMODE_BLEND:
+        if (!data->premultiplied && data->pixels) {
+            switch (texture->format) {
+            case SDL_PIXELFORMAT_ARGB8888:
+                SDL_PreMultiplyAlphaARGB8888(texture->w, texture->h,
+                                             (Uint32 *) data->pixels,
+                                             data->pitch);
+                data->premultiplied = SDL_TRUE;
+                break;
+            case SDL_PIXELFORMAT_RGBA8888:
+                SDL_PreMultiplyAlphaRGBA8888(texture->w, texture->h,
+                                             (Uint32 *) data->pixels,
+                                             data->pitch);
+                data->premultiplied = SDL_TRUE;
+                break;
+            case SDL_PIXELFORMAT_ABGR8888:
+                SDL_PreMultiplyAlphaABGR8888(texture->w, texture->h,
+                                             (Uint32 *) data->pixels,
+                                             data->pitch);
+                data->premultiplied = SDL_TRUE;
+                break;
+            case SDL_PIXELFORMAT_BGRA8888:
+                SDL_PreMultiplyAlphaBGRA8888(texture->w, texture->h,
+                                             (Uint32 *) data->pixels,
+                                             data->pitch);
+                data->premultiplied = SDL_TRUE;
+                break;
+            }
+        }
+        return 0;
+#endif
+    default:
+        SDL_Unsupported();
+        texture->blendMode = SDL_BLENDMODE_NONE;
+        return -1;
+    }
+}
+
+static int
+GDI_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    switch (texture->scaleMode) {
+    case SDL_SCALEMODE_NONE:
+    case SDL_SCALEMODE_FAST:
+        return 0;
+    case SDL_SCALEMODE_SLOW:
+    case SDL_SCALEMODE_BEST:
+        SDL_Unsupported();
+        texture->scaleMode = SDL_SCALEMODE_FAST;
+        return -1;
+    default:
+        SDL_Unsupported();
+        texture->scaleMode = SDL_SCALEMODE_NONE;
+        return -1;
+    }
+    return 0;
+}
+
+static int
+GDI_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                  const SDL_Rect * rect, const void *pixels, int pitch)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    if (data->yuv) {
+        if (SDL_SW_UpdateYUVTexture(data->yuv, rect, pixels, pitch) < 0) {
+            return -1;
+        }
+        UpdateYUVTextureData(texture);
+        return 0;
+    } else {
+        GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
+
+        if (data->pixels) {
+            Uint8 *src, *dst;
+            int row;
+            size_t length;
+
+            src = (Uint8 *) pixels;
+            dst =
+                (Uint8 *) data->pixels + rect->y * data->pitch +
+                rect->x * SDL_BYTESPERPIXEL(texture->format);
+            length = rect->w * SDL_BYTESPERPIXEL(texture->format);
+            for (row = 0; row < rect->h; ++row) {
+                SDL_memcpy(dst, src, length);
+                src += pitch;
+                dst += data->pitch;
+            }
+            if (data->premultiplied) {
+                Uint32 *pixels =
+                    (Uint32 *) data->pixels + rect->y * (data->pitch / 4) +
+                    rect->x;
+                switch (texture->format) {
+                case SDL_PIXELFORMAT_ARGB8888:
+                    SDL_PreMultiplyAlphaARGB8888(rect->w, rect->h, pixels,
+                                                 data->pitch);
+                    break;
+                case SDL_PIXELFORMAT_RGBA8888:
+                    SDL_PreMultiplyAlphaRGBA8888(rect->w, rect->h, pixels,
+                                                 data->pitch);
+                    break;
+                case SDL_PIXELFORMAT_ABGR8888:
+                    SDL_PreMultiplyAlphaABGR8888(rect->w, rect->h, pixels,
+                                                 data->pitch);
+                    break;
+                case SDL_PIXELFORMAT_BGRA8888:
+                    SDL_PreMultiplyAlphaBGRA8888(rect->w, rect->h, pixels,
+                                                 data->pitch);
+                    break;
+                }
+            }
+        } else if (rect->w == texture->w && pitch == data->pitch) {
+#ifndef NO_GETDIBBITS
+            if (!SetDIBits
+                (renderdata->window_hdc, data->hbm, rect->y, rect->h, pixels,
+                 renderdata->bmi, DIB_RGB_COLORS)) {
+                WIN_SetError("SetDIBits()");
+                return -1;
+            }
+#else
+            SDL_SetError("FIXME: Update Texture");
+            return -1;
+#endif
+        } else {
+            SDL_SetError
+                ("FIXME: Need to allocate temporary memory and do GetDIBits() followed by SetDIBits(), since we can only set blocks of scanlines at a time");
+            return -1;
+        }
+        return 0;
+    }
+}
+
+static int
+GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+                const SDL_Rect * rect, int markDirty, void **pixels,
+                int *pitch)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    if (data->yuv) {
+        return SDL_SW_LockYUVTexture(data->yuv, rect, markDirty, pixels,
+                                     pitch);
+    } else if (data->pixels) {
+#ifndef _WIN32_WCE
+        /* WinCE has no GdiFlush */
+        GdiFlush();
+#endif
+        *pixels =
+            (void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
+                      rect->x * SDL_BYTESPERPIXEL(texture->format));
+        *pitch = data->pitch;
+        return 0;
+    } else {
+        SDL_SetError("No pixels available");
+        return -1;
+    }
+}
+
+static void
+GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    if (data->yuv) {
+        SDL_SW_UnlockYUVTexture(data->yuv);
+        UpdateYUVTextureData(texture);
+    }
+}
+
+static int
+GDI_SetDrawBlendMode(SDL_Renderer * renderer)
+{
+    switch (renderer->blendMode) {
+    case SDL_BLENDMODE_NONE:
+        return 0;
+    default:
+        SDL_Unsupported();
+        renderer->blendMode = SDL_BLENDMODE_NONE;
+        return -1;
+    }
+}
+
+static int
+GDI_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
+                     int count)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    int i;
+    COLORREF color;
+
+    if (data->makedirty) {
+        /* Get the smallest rectangle that contains everything */
+        SDL_Window *window = renderer->window;
+        SDL_Rect rect;
+
+        rect.x = 0;
+        rect.y = 0;
+        rect.w = window->w;
+        rect.h = window->h;
+        if (!SDL_EnclosePoints(points, count, &rect, &rect)) {
+            /* Nothing to draw */
+            return 0;
+        }
+
+        SDL_AddDirtyRect(&data->dirty, &rect);
+    }
+
+    color = RGB(renderer->r, renderer->g, renderer->b);
+    for (i = 0; i < count; ++i) {
+        SetPixel(data->current_hdc, points[i].x, points[i].y, color);
+    }
+
+    return 0;
+}
+
+static int
+GDI_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
+                    int count)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    HPEN pen;
+    BOOL status;
+
+    if (data->makedirty) {
+        /* Get the smallest rectangle that contains everything */
+        SDL_Window *window = renderer->window;
+        SDL_Rect clip, rect;
+
+        clip.x = 0;
+        clip.y = 0;
+        clip.w = window->w;
+        clip.h = window->h;
+        SDL_EnclosePoints(points, count, NULL, &rect);
+        if (!SDL_IntersectRect(&rect, &clip, &rect)) {
+            /* Nothing to draw */
+            return 0;
+        }
+
+        SDL_AddDirtyRect(&data->dirty, &rect);
+    }
+
+    /* Should we cache the pen? .. it looks like GDI does for us. :) */
+    pen = CreatePen(PS_SOLID, 1, RGB(renderer->r, renderer->g, renderer->b));
+    SelectObject(data->current_hdc, pen);
+    {
+        LPPOINT p = SDL_stack_alloc(POINT, count);
+        int i;
+
+        for (i = 0; i < count; ++i) {
+            p[i].x = points[i].x;
+            p[i].y = points[i].y;
+        }
+        status = Polyline(data->current_hdc, p, count);
+        SDL_stack_free(p);
+    }
+    DeleteObject(pen);
+
+    /* Need to close the endpoint of the line */
+    if (points[0].x != points[count-1].x || points[0].y != points[count-1].y) {
+        SetPixel(data->current_hdc, points[count-1].x, points[count-1].y,
+                 RGB(renderer->r, renderer->g, renderer->b));
+    }
+
+    if (!status) {
+        WIN_SetError("Polyline()");
+        return -1;
+    }
+    return 0;
+}
+
+static int
+GDI_RenderDrawRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
+                    int count)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    HPEN pen;
+    POINT vertices[5];
+    int i, status = 1;
+
+    if (data->makedirty) {
+        SDL_Window *window = renderer->window;
+        SDL_Rect clip, rect;
+
+        clip.x = 0;
+        clip.y = 0;
+        clip.w = window->w;
+        clip.h = window->h;
+
+        for (i = 0; i < count; ++i) {
+            if (SDL_IntersectRect(rects[i], &clip, &rect)) {
+                SDL_AddDirtyRect(&data->dirty, &rect);
+            }
+        }
+    }
+
+    /* Should we cache the pen? .. it looks like GDI does for us. :) */
+    pen = CreatePen(PS_SOLID, 1, RGB(renderer->r, renderer->g, renderer->b));
+    SelectObject(data->current_hdc, pen);
+    for (i = 0; i < count; ++i) {
+        const SDL_Rect *rect = rects[i];
+
+        vertices[0].x = rect->x;
+        vertices[0].y = rect->y;
+
+        vertices[1].x = rect->x+rect->w-1;
+        vertices[1].y = rect->y;
+
+        vertices[2].x = rect->x+rect->w-1;
+        vertices[2].y = rect->y+rect->h-1;
+
+        vertices[3].x = rect->x;
+        vertices[3].y = rect->y+rect->h-1;
+
+        vertices[4].x = rect->x;
+        vertices[4].y = rect->y;
+
+        status &= Polyline(data->current_hdc, vertices, 5);
+    }
+    DeleteObject(pen);
+
+    if (!status) {
+        WIN_SetError("Polyline()");
+        return -1;
+    }
+    return 0;
+}
+
+static int
+GDI_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
+                    int count)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    RECT rc;
+    HBRUSH brush;
+    int i, status = 1;
+
+    if (data->makedirty) {
+        SDL_Window *window = renderer->window;
+        SDL_Rect clip, rect;
+
+        clip.x = 0;
+        clip.y = 0;
+        clip.w = window->w;
+        clip.h = window->h;
+
+        for (i = 0; i < count; ++i) {
+            if (SDL_IntersectRect(rects[i], &clip, &rect)) {
+                SDL_AddDirtyRect(&data->dirty, &rect);
+            }
+        }
+    }
+
+    /* Should we cache the brushes? .. it looks like GDI does for us. :) */
+    brush = CreateSolidBrush(RGB(renderer->r, renderer->g, renderer->b));
+    SelectObject(data->current_hdc, brush);
+    for (i = 0; i < count; ++i) {
+        const SDL_Rect *rect = rects[i];
+
+        rc.left = rect->x;
+        rc.top = rect->y;
+        rc.right = rect->x + rect->w;
+        rc.bottom = rect->y + rect->h;
+
+        status &= FillRect(data->current_hdc, &rc, brush);
+    }
+    DeleteObject(brush);
+
+    if (!status) {
+        WIN_SetError("FillRect()");
+        return -1;
+    }
+    return 0;
+}
+
+static int
+GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+               const SDL_Rect * srcrect, const SDL_Rect * dstrect)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    GDI_TextureData *texturedata = (GDI_TextureData *) texture->driverdata;
+
+    if (data->makedirty) {
+        SDL_AddDirtyRect(&data->dirty, dstrect);
+    }
+
+    SelectObject(data->memory_hdc, texturedata->hbm);
+    if (texturedata->hpal) {
+        SelectPalette(data->memory_hdc, texturedata->hpal, TRUE);
+        RealizePalette(data->memory_hdc);
+    }
+    if (texture->blendMode & (SDL_BLENDMODE_MASK | SDL_BLENDMODE_BLEND)) {
+#ifdef _WIN32_WCE
+        SDL_SetError("Texture has blendmode not supported under WinCE");
+        return -1;
+#else
+        BLENDFUNCTION blendFunc = {
+            AC_SRC_OVER,
+            0,
+            texture->a,
+            AC_SRC_ALPHA
+        };
+        if (!AlphaBlend
+            (data->current_hdc, dstrect->x, dstrect->y, dstrect->w,
+             dstrect->h, data->memory_hdc, srcrect->x, srcrect->y, srcrect->w,
+             srcrect->h, blendFunc)) {
+            WIN_SetError("AlphaBlend()");
+            return -1;
+        }
+#endif
+    } else {
+        if (srcrect->w == dstrect->w && srcrect->h == dstrect->h) {
+            if (!BitBlt
+                (data->current_hdc, dstrect->x, dstrect->y, dstrect->w,
+                 srcrect->h, data->memory_hdc, srcrect->x, srcrect->y,
+                 SRCCOPY)) {
+                WIN_SetError("BitBlt()");
+                return -1;
+            }
+        } else {
+            if (!StretchBlt
+                (data->current_hdc, dstrect->x, dstrect->y, dstrect->w,
+                 dstrect->h, data->memory_hdc, srcrect->x, srcrect->y,
+                 srcrect->w, srcrect->h, SRCCOPY)) {
+                WIN_SetError("StretchBlt()");
+                return -1;
+            }
+        }
+    }
+    return 0;
+}
+
+static int
+GDI_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                     Uint32 format, void * pixels, int pitch)
+{
+    GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
+    SDL_Window *window = renderer->window;
+    SDL_VideoDisplay *display = window->display;
+    struct {
+        HBITMAP hbm;
+        void *pixels;
+        int pitch;
+        Uint32 format;
+    } data;
+
+    data.format = display->current_mode.format;
+    data.pitch = (rect->w * SDL_BYTESPERPIXEL(data.format));
+
+    data.hbm = GDI_CreateDIBSection(renderdata->memory_hdc, rect->w, rect->h,
+                                    data.pitch, data.format, NULL,
+                                    &data.pixels);
+    if (!data.hbm) {
+        WIN_SetError("Couldn't create bitmap");
+        return -1;
+    }
+
+    SelectObject(renderdata->memory_hdc, data.hbm);
+    if (!BitBlt(renderdata->memory_hdc, 0, 0, rect->w, rect->h,
+                renderdata->current_hdc, rect->x, rect->y, SRCCOPY)) {
+        WIN_SetError("BitBlt()");
+        DeleteObject(data.hbm);
+        return -1;
+    }
+
+    SDL_ConvertPixels(rect->w, rect->h,
+                      data.format, data.pixels, data.pitch,
+                      format, pixels, pitch);
+
+    DeleteObject(data.hbm);
+    return 0;
+}
+
+static int
+GDI_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+                      Uint32 format, const void * pixels, int pitch)
+{
+    GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
+    SDL_Window *window = renderer->window;
+    SDL_VideoDisplay *display = window->display;
+    struct {
+        HBITMAP hbm;
+        void *pixels;
+        int pitch;
+        Uint32 format;
+    } data;
+
+    data.format = display->current_mode.format;
+    data.pitch = (rect->w * SDL_BYTESPERPIXEL(data.format));
+
+    data.hbm = GDI_CreateDIBSection(renderdata->memory_hdc, rect->w, rect->h,
+                                    data.pitch, data.format,
+                                    NULL, &data.pixels);
+    if (!data.hbm) {
+        WIN_SetError("Couldn't create bitmap");
+        return -1;
+    }
+
+    SDL_ConvertPixels(rect->w, rect->h, format, pixels, pitch,
+                      data.format, data.pixels, data.pitch);
+
+    SelectObject(renderdata->memory_hdc, data.hbm);
+    if (!BitBlt(renderdata->current_hdc, rect->x, rect->y, rect->w, rect->h,
+                renderdata->memory_hdc, 0, 0, SRCCOPY)) {
+        WIN_SetError("BitBlt()");
+        DeleteObject(data.hbm);
+        return -1;
+    }
+
+    DeleteObject(data.hbm);
+    return 0;
+}
+
+static void
+GDI_RenderPresent(SDL_Renderer * renderer)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    SDL_DirtyRect *dirty;
+
+    /* Send the data to the display */
+    if (!(renderer->info.flags & SDL_RENDERER_SINGLEBUFFER)) {
+        for (dirty = data->dirty.list; dirty; dirty = dirty->next) {
+            const SDL_Rect *rect = &dirty->rect;
+            BitBlt(data->window_hdc, rect->x, rect->y, rect->w, rect->h,
+                   data->render_hdc, rect->x, rect->y, SRCCOPY);
+        }
+        SDL_ClearDirtyRects(&data->dirty);
+    }
+
+    /* Update the flipping chain, if any */
+    if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
+        data->current_hbm = (data->current_hbm + 1) % 2;
+        SelectObject(data->render_hdc, data->hbm[data->current_hbm]);
+    } else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
+        data->current_hbm = (data->current_hbm + 1) % 3;
+        SelectObject(data->render_hdc, data->hbm[data->current_hbm]);
+    }
+}
+
+static void
+GDI_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+    GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
+
+    if (!data) {
+        return;
+    }
+    if (data->yuv) {
+        SDL_SW_DestroyYUVTexture(data->yuv);
+    }
+    if (data->hpal) {
+        DeleteObject(data->hpal);
+    }
+    if (data->hbm) {
+        DeleteObject(data->hbm);
+    }
+    SDL_free(data);
+    texture->driverdata = NULL;
+}
+
+static void
+GDI_DestroyRenderer(SDL_Renderer * renderer)
+{
+    GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
+    int i;
+
+    if (data) {
+        DeleteDC(data->render_hdc);
+        DeleteDC(data->memory_hdc);
+#ifndef NO_GETDIBBITS
+        if (data->bmi) {
+            SDL_free(data->bmi);
+        }
+#endif
+        for (i = 0; i < SDL_arraysize(data->hbm); ++i) {
+            if (data->hbm[i]) {
+                DeleteObject(data->hbm[i]);
+            }
+        }
+        SDL_FreeDirtyRects(&data->dirty);
+        SDL_free(data);
+    }
+    SDL_free(renderer);
+}
+
+#endif /* SDL_VIDEO_RENDER_GDI */
+
+/* vi: set ts=4 sw=4 expandtab: */