--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/win32/SDL_gdirender.c Sat Jul 08 18:06:02 2006 +0000
@@ -0,0 +1,721 @@
+/*
+ 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"
+
+#if SDL_VIDEO_RENDER_GDI
+
+#include "SDL_win32video.h"
+#include "../SDL_yuv_sw_c.h"
+
+/* GDI renderer implementation */
+
+static SDL_Renderer *SDL_GDI_CreateRenderer(SDL_Window * window,
+ Uint32 flags);
+static int SDL_GDI_CreateTexture(SDL_Renderer * renderer,
+ SDL_Texture * texture);
+static int SDL_GDI_QueryTexturePixels(SDL_Renderer * renderer,
+ SDL_Texture * texture, void **pixels,
+ int *pitch);
+static int SDL_GDI_SetTexturePalette(SDL_Renderer * renderer,
+ SDL_Texture * texture,
+ const SDL_Color * colors, int firstcolor,
+ int ncolors);
+static int SDL_GDI_GetTexturePalette(SDL_Renderer * renderer,
+ SDL_Texture * texture,
+ SDL_Color * colors, int firstcolor,
+ int ncolors);
+static int SDL_GDI_UpdateTexture(SDL_Renderer * renderer,
+ SDL_Texture * texture, const SDL_Rect * rect,
+ const void *pixels, int pitch);
+static int SDL_GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+ const SDL_Rect * rect, int markDirty,
+ void **pixels, int *pitch);
+static void SDL_GDI_UnlockTexture(SDL_Renderer * renderer,
+ SDL_Texture * texture);
+static void SDL_GDI_DirtyTexture(SDL_Renderer * renderer,
+ SDL_Texture * texture, int numrects,
+ const SDL_Rect * rects);
+static void SDL_GDI_SelectRenderTexture(SDL_Renderer * renderer,
+ SDL_Texture * texture);
+static int SDL_GDI_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
+ Uint32 color);
+static int SDL_GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+ const SDL_Rect * srcrect,
+ const SDL_Rect * dstrect, int blendMode,
+ int scaleMode);
+static int SDL_GDI_RenderReadPixels(SDL_Renderer * renderer,
+ const SDL_Rect * rect, void *pixels,
+ int pitch);
+static int SDL_GDI_RenderWritePixels(SDL_Renderer * renderer,
+ const SDL_Rect * rect,
+ const void *pixels, int pitch);
+static void SDL_GDI_RenderPresent(SDL_Renderer * renderer);
+static void SDL_GDI_DestroyTexture(SDL_Renderer * renderer,
+ SDL_Texture * texture);
+static void SDL_GDI_DestroyRenderer(SDL_Renderer * renderer);
+
+
+SDL_RenderDriver SDL_GDI_RenderDriver = {
+ SDL_GDI_CreateRenderer,
+ {
+ "gdi",
+ (SDL_Renderer_PresentDiscard |
+ SDL_Renderer_PresentCopy | SDL_Renderer_RenderTarget),
+ (SDL_TextureBlendMode_None |
+ SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend),
+ (SDL_TextureScaleMode_None | SDL_TextureScaleMode_Fast),
+ 11,
+ {
+ 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_YUY2,
+ SDL_PixelFormat_UYVY},
+ 0,
+ 0}
+};
+
+typedef struct
+{
+ HWND hwnd;
+ HDC window_hdc;
+ HDC render_hdc;
+ HDC memory_hdc;
+ HDC current_hdc;
+ LPBITMAPINFO bmi;
+ HBITMAP window_bmp;
+ void *window_pixels;
+ int window_pitch;
+} SDL_GDI_RenderData;
+
+typedef struct
+{
+ SDL_SW_YUVTexture *yuv;
+ Uint32 format;
+ HPALETTE hpal;
+ HBITMAP hbm;
+ void *pixels;
+ int pitch;
+} SDL_GDI_TextureData;
+
+static void
+UpdateYUVTextureData(SDL_Texture * texture)
+{
+ SDL_GDI_TextureData *data = (SDL_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)
+{
+ SDL_AddRenderDriver(0, &SDL_GDI_RenderDriver);
+}
+
+SDL_Renderer *
+SDL_GDI_CreateRenderer(SDL_Window * window, Uint32 flags)
+{
+ SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
+ SDL_Renderer *renderer;
+ SDL_GDI_RenderData *data;
+ int bmi_size;
+ HBITMAP hbm;
+
+ renderer = (SDL_Renderer *) SDL_malloc(sizeof(*renderer));
+ if (!renderer) {
+ SDL_OutOfMemory();
+ return NULL;
+ }
+ SDL_zerop(renderer);
+
+ data = (SDL_GDI_RenderData *) SDL_malloc(sizeof(*data));
+ if (!data) {
+ SDL_GDI_DestroyRenderer(renderer);
+ SDL_OutOfMemory();
+ return NULL;
+ }
+ SDL_zerop(data);
+
+ data->hwnd = windowdata->hwnd;
+ data->window_hdc = GetDC(data->hwnd);
+ data->render_hdc = CreateCompatibleDC(data->window_hdc);
+ data->memory_hdc = CreateCompatibleDC(data->window_hdc);
+ data->current_hdc = data->window_hdc;
+
+ /* Fill in the compatible bitmap info */
+ bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
+ data->bmi = (LPBITMAPINFO) SDL_malloc(bmi_size);
+ if (!data->bmi) {
+ SDL_GDI_DestroyRenderer(renderer);
+ SDL_OutOfMemory();
+ return NULL;
+ }
+ SDL_memset(data->bmi, 0, bmi_size);
+ 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);
+
+ renderer->CreateTexture = SDL_GDI_CreateTexture;
+ renderer->QueryTexturePixels = SDL_GDI_QueryTexturePixels;
+ renderer->SetTexturePalette = SDL_GDI_SetTexturePalette;
+ renderer->GetTexturePalette = SDL_GDI_GetTexturePalette;
+ renderer->UpdateTexture = SDL_GDI_UpdateTexture;
+ renderer->LockTexture = SDL_GDI_LockTexture;
+ renderer->UnlockTexture = SDL_GDI_UnlockTexture;
+ renderer->DirtyTexture = SDL_GDI_DirtyTexture;
+ renderer->SelectRenderTexture = SDL_GDI_SelectRenderTexture;
+ renderer->RenderFill = SDL_GDI_RenderFill;
+ renderer->RenderCopy = SDL_GDI_RenderCopy;
+ renderer->RenderReadPixels = SDL_GDI_RenderReadPixels;
+ renderer->RenderWritePixels = SDL_GDI_RenderWritePixels;
+ renderer->RenderPresent = SDL_GDI_RenderPresent;
+ renderer->DestroyTexture = SDL_GDI_DestroyTexture;
+ renderer->DestroyRenderer = SDL_GDI_DestroyRenderer;
+ renderer->info = SDL_GDI_RenderDriver.info;
+ renderer->window = window->id;
+ renderer->driverdata = data;
+
+ renderer->info.flags = SDL_Renderer_RenderTarget;
+
+ return renderer;
+}
+
+static int
+SDL_GDI_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+ SDL_GDI_RenderData *renderdata =
+ (SDL_GDI_RenderData *) renderer->driverdata;
+ SDL_Window *window = SDL_GetWindowFromID(renderer->window);
+ SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
+ SDL_GDI_TextureData *data;
+
+ data = (SDL_GDI_TextureData *) SDL_malloc(sizeof(*data));
+ if (!data) {
+ SDL_OutOfMemory();
+ return -1;
+ }
+ SDL_zerop(data);
+
+ texture->driverdata = data;
+
+ if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
+ if (texture->access == SDL_TextureAccess_Render) {
+ SDL_SetError("Rendering to YUV format textures is not supported");
+ return -1;
+ }
+ data->yuv = SDL_SW_CreateYUVTexture(texture);
+ if (!data->yuv) {
+ SDL_GDI_DestroyTexture(renderer, texture);
+ 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_Local
+ || texture->format != SDL_GetCurrentDisplayMode()->format) {
+ int bmi_size;
+ LPBITMAPINFO bmi;
+
+ bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
+ bmi = (LPBITMAPINFO) SDL_malloc(bmi_size);
+ if (!bmi) {
+ SDL_GDI_DestroyTexture(renderer, texture);
+ SDL_OutOfMemory();
+ return -1;
+ }
+ SDL_memset(bmi, 0, bmi_size);
+ bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+ bmi->bmiHeader.biWidth = texture->w;
+ bmi->bmiHeader.biHeight = -texture->h; /* topdown bitmap */
+ bmi->bmiHeader.biPlanes = 1;
+ bmi->bmiHeader.biSizeImage = texture->h * data->pitch;
+ bmi->bmiHeader.biXPelsPerMeter = 0;
+ bmi->bmiHeader.biYPelsPerMeter = 0;
+ bmi->bmiHeader.biClrUsed = 0;
+ bmi->bmiHeader.biClrImportant = 0;
+ bmi->bmiHeader.biBitCount = SDL_BYTESPERPIXEL(data->format) * 8;
+ if (SDL_ISPIXELFORMAT_INDEXED(data->format)) {
+ int i, ncolors;
+ LOGPALETTE *palette;
+
+ bmi->bmiHeader.biCompression = BI_RGB;
+ ncolors = (1 << SDL_BITSPERPIXEL(data->format));
+ palette =
+ (LOGPALETTE *) SDL_malloc(sizeof(*palette) +
+ ncolors * sizeof(PALETTEENTRY));
+ if (!palette) {
+ SDL_free(bmi);
+ SDL_GDI_DestroyTexture(renderer, texture);
+ SDL_OutOfMemory();
+ return -1;
+ }
+ 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;
+ }
+ data->hpal = CreatePalette(palette);
+ SDL_free(palette);
+ } else {
+ int bpp;
+ Uint32 Rmask, Gmask, Bmask, Amask;
+
+ bmi->bmiHeader.biCompression = BI_BITFIELDS;
+ SDL_PixelFormatEnumToMasks(data->format, &bpp, &Rmask, &Gmask,
+ &Bmask, &Amask);
+ ((Uint32 *) bmi->bmiColors)[0] = Rmask;
+ ((Uint32 *) bmi->bmiColors)[1] = Gmask;
+ ((Uint32 *) bmi->bmiColors)[2] = Bmask;
+ data->hpal = NULL;
+ }
+ data->hbm =
+ CreateDIBSection(renderdata->memory_hdc, bmi, DIB_RGB_COLORS,
+ &data->pixels, NULL, 0);
+ } else {
+ data->hbm =
+ CreateCompatibleBitmap(renderdata->window_hdc, texture->w,
+ texture->h);
+ data->pixels = NULL;
+ }
+ if (!data->hbm) {
+ SDL_GDI_DestroyTexture(renderer, texture);
+ WIN_SetError("Couldn't create bitmap");
+ return -1;
+ }
+ return 0;
+}
+
+static int
+SDL_GDI_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
+ void **pixels, int *pitch)
+{
+ SDL_GDI_TextureData *data = (SDL_GDI_TextureData *) texture->driverdata;
+
+ if (data->yuv) {
+ return SDL_SW_QueryYUVTexturePixels(data->yuv, pixels, pitch);
+ } else {
+ *pixels = data->pixels;
+ *pitch = texture->w * SDL_BYTESPERPIXEL(texture->format);
+ return 0;
+ }
+}
+
+static int
+SDL_GDI_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
+ const SDL_Color * colors, int firstcolor,
+ int ncolors)
+{
+ SDL_GDI_RenderData *renderdata =
+ (SDL_GDI_RenderData *) renderer->driverdata;
+ SDL_GDI_TextureData *data = (SDL_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
+SDL_GDI_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
+ SDL_Color * colors, int firstcolor, int ncolors)
+{
+ SDL_GDI_TextureData *data = (SDL_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
+SDL_GDI_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+ const SDL_Rect * rect, const void *pixels, int pitch)
+{
+ SDL_GDI_TextureData *data = (SDL_GDI_TextureData *) texture->driverdata;
+
+ if (data->yuv) {
+ if (SDL_SW_UpdateYUVTexture(data->yuv, rect, pixels, pitch) < 0) {
+ return -1;
+ }
+ UpdateYUVTextureData(texture);
+ return 0;
+ } else {
+ SDL_GDI_RenderData *renderdata =
+ (SDL_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;
+ }
+ } else if (rect->w == texture->w && pitch == data->pitch) {
+ 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: 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
+SDL_GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+ const SDL_Rect * rect, int markDirty, void **pixels,
+ int *pitch)
+{
+ SDL_GDI_TextureData *data = (SDL_GDI_TextureData *) texture->driverdata;
+
+ if (data->yuv) {
+ return SDL_SW_LockYUVTexture(data->yuv, rect, markDirty, pixels,
+ pitch);
+ } else {
+ GdiFlush();
+ *pixels =
+ (void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
+ rect->x * SDL_BYTESPERPIXEL(texture->format));
+ *pitch = data->pitch;
+ return 0;
+ }
+}
+
+static void
+SDL_GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+ SDL_GDI_TextureData *data = (SDL_GDI_TextureData *) texture->driverdata;
+
+ if (data->yuv) {
+ SDL_SW_UnlockYUVTexture(data->yuv);
+ UpdateYUVTextureData(texture);
+ }
+}
+
+static void
+SDL_GDI_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
+ int numrects, const SDL_Rect * rects)
+{
+}
+
+static void
+SDL_GDI_SelectRenderTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+ SDL_GDI_RenderData *data = (SDL_GDI_RenderData *) renderer->driverdata;
+
+ if (texture) {
+ SDL_GDI_TextureData *texturedata =
+ (SDL_GDI_TextureData *) texture->driverdata;
+ SelectObject(data->render_hdc, texturedata->hbm);
+ if (texturedata->hpal) {
+ SelectPalette(data->render_hdc, texturedata->hpal, TRUE);
+ RealizePalette(data->render_hdc);
+ }
+ data->current_hdc = data->render_hdc;
+ } else {
+ data->current_hdc = data->current_hdc;
+ }
+}
+
+static int
+SDL_GDI_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
+ Uint32 color)
+{
+ SDL_GDI_RenderData *data = (SDL_GDI_RenderData *) renderer->driverdata;
+ Uint8 r, g, b;
+ RECT rc;
+ static HBRUSH brush;
+ int status;
+
+ r = (Uint8) ((color >> 16) & 0xFF);
+ g = (Uint8) ((color >> 8) & 0xFF);
+ b = (Uint8) (color & 0xFF);
+
+ rc.left = rect->x;
+ rc.top = rect->y;
+ rc.right = rect->x + rect->w + 1;
+ rc.bottom = rect->y + rect->h + 1;
+
+ /* Should we cache the brushes? .. it looks like GDI does for us. :) */
+ brush = CreateSolidBrush(RGB(r, g, b));
+ SelectObject(data->current_hdc, brush);
+ status = FillRect(data->current_hdc, &rc, brush);
+ DeleteObject(brush);
+
+ if (!status) {
+ WIN_SetError("FillRect()");
+ return -1;
+ }
+ return 0;
+}
+
+static int
+SDL_GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
+ const SDL_Rect * srcrect, const SDL_Rect * dstrect,
+ int blendMode, int scaleMode)
+{
+ SDL_GDI_RenderData *data = (SDL_GDI_RenderData *) renderer->driverdata;
+ SDL_GDI_TextureData *texturedata =
+ (SDL_GDI_TextureData *) texture->driverdata;
+
+ SelectObject(data->memory_hdc, texturedata->hbm);
+ if (texturedata->hpal) {
+ SelectPalette(data->memory_hdc, texturedata->hpal, TRUE);
+ RealizePalette(data->memory_hdc);
+ }
+ if (blendMode & (SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend)) {
+ static BLENDFUNCTION blendFunc = {
+ AC_SRC_OVER,
+ 0,
+ 255,
+ AC_SRC_ALPHA
+ };
+ /* FIXME: GDI uses premultiplied 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;
+ }
+ } 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
+CreateWindowDIB(SDL_GDI_RenderData * data, SDL_Window * window)
+{
+ data->window_pitch = window->w * (data->bmi->bmiHeader.biBitCount / 8);
+ data->bmi->bmiHeader.biWidth = window->w;
+ data->bmi->bmiHeader.biHeight = -window->h;
+ data->bmi->bmiHeader.biSizeImage =
+ window->h * (data->bmi->bmiHeader.biBitCount / 8);
+ data->window_bmp =
+ CreateDIBSection(data->window_hdc, data->bmi, DIB_RGB_COLORS,
+ &data->window_pixels, NULL, 0);
+ if (!data->window_bmp) {
+ WIN_SetError("CreateDIBSection()");
+ return -1;
+ }
+ return 0;
+}
+
+static int
+SDL_GDI_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+ void *pixels, int pitch)
+{
+ SDL_Window *window = SDL_GetWindowFromID(renderer->window);
+ SDL_GDI_RenderData *data = (SDL_GDI_RenderData *) renderer->driverdata;
+
+ if (!data->window_bmp) {
+ if (CreateWindowDIB(data, window) < 0) {
+ return -1;
+ }
+ }
+
+ SelectObject(data->memory_hdc, data->window_bmp);
+ BitBlt(data->memory_hdc, rect->x, rect->y, rect->w, rect->h,
+ data->window_hdc, rect->x, rect->y, SRCCOPY);
+
+ {
+ int bpp = data->bmi->bmiHeader.biBitCount / 8;
+ Uint8 *src =
+ (Uint8 *) data->window_pixels + rect->y * data->window_pitch +
+ rect->x * bpp;
+ Uint8 *dst = (Uint8 *) pixels;
+ int row;
+
+ for (row = 0; row < rect->h; ++row) {
+ SDL_memcpy(dst, src, rect->w * bpp);
+ src += data->window_pitch;
+ dst += pitch;
+ }
+ }
+
+ return 0;
+}
+
+static int
+SDL_GDI_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
+ const void *pixels, int pitch)
+{
+ SDL_Window *window = SDL_GetWindowFromID(renderer->window);
+ SDL_GDI_RenderData *data = (SDL_GDI_RenderData *) renderer->driverdata;
+
+ if (!data->window_bmp) {
+ if (CreateWindowDIB(data, window) < 0) {
+ return -1;
+ }
+ }
+
+ {
+ int bpp = data->bmi->bmiHeader.biBitCount / 8;
+ Uint8 *src = (Uint8 *) pixels;
+ Uint8 *dst =
+ (Uint8 *) data->window_pixels + rect->y * data->window_pitch +
+ rect->x * bpp;
+ int row;
+
+ for (row = 0; row < rect->h; ++row) {
+ SDL_memcpy(dst, src, rect->w * bpp);
+ src += pitch;
+ dst += data->window_pitch;
+ }
+ }
+
+ SelectObject(data->memory_hdc, data->window_bmp);
+ BitBlt(data->window_hdc, rect->x, rect->y, rect->w, rect->h,
+ data->memory_hdc, rect->x, rect->y, SRCCOPY);
+
+ return 0;
+}
+
+static void
+SDL_GDI_RenderPresent(SDL_Renderer * renderer)
+{
+}
+
+static void
+SDL_GDI_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
+{
+ SDL_GDI_TextureData *data = (SDL_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;
+}
+
+void
+SDL_GDI_DestroyRenderer(SDL_Renderer * renderer)
+{
+ SDL_GDI_RenderData *data = (SDL_GDI_RenderData *) renderer->driverdata;
+
+ if (data) {
+ ReleaseDC(data->hwnd, data->window_hdc);
+ DeleteDC(data->render_hdc);
+ DeleteDC(data->memory_hdc);
+ if (data->bmi) {
+ SDL_free(data->bmi);
+ }
+ if (data->window_bmp) {
+ DeleteObject(data->window_bmp);
+ }
+ SDL_free(data);
+ }
+ SDL_free(renderer);
+}
+
+#endif /* SDL_VIDEO_RENDER_GDI */
+
+/* vi: set ts=4 sw=4 expandtab: */