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SDL_gdirender.c
1127 lines (1005 loc) · 34.9 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2010 Sam Lantinga
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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"
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#include "../SDL_rect_c.h"
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#include "../SDL_yuv_sw_c.h"
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#include "../SDL_alphamult.h"
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#ifdef _WIN32_WCE
#define NO_GETDIBBITS 1
#endif
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/* GDI renderer implementation */
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static SDL_Renderer *GDI_CreateRenderer(SDL_Window * window, Uint32 flags);
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static int GDI_DisplayModeChanged(SDL_Renderer * renderer);
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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);
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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);
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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);
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static int GDI_SetDrawBlendMode(SDL_Renderer * renderer);
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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);
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static int GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * srcrect, const SDL_Rect * dstrect);
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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);
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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,
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{
"gdi",
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(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
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SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
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SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED),
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(SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_ALPHA),
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(SDL_BLENDMODE_NONE | SDL_BLENDMODE_MASK),
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(SDL_SCALEMODE_NONE | SDL_SCALEMODE_FAST),
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{
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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,
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SDL_PIXELFORMAT_YV12,
SDL_PIXELFORMAT_IYUV,
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SDL_PIXELFORMAT_YUY2,
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SDL_PIXELFORMAT_UYVY,
SDL_PIXELFORMAT_YVYU},
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0,
0}
};
typedef struct
{
HWND hwnd;
HDC window_hdc;
HDC render_hdc;
HDC memory_hdc;
HDC current_hdc;
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#ifndef NO_GETDIBBITS
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LPBITMAPINFO bmi;
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#endif
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HBITMAP hbm[3];
int current_hbm;
SDL_DirtyRectList dirty;
SDL_bool makedirty;
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} GDI_RenderData;
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typedef struct
{
SDL_SW_YUVTexture *yuv;
Uint32 format;
HPALETTE hpal;
HBITMAP hbm;
void *pixels;
int pitch;
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SDL_bool premultiplied;
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} GDI_TextureData;
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static void
UpdateYUVTextureData(SDL_Texture * texture)
{
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GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
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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)
{
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int i;
for (i = 0; i < _this->num_displays; ++i) {
SDL_AddRenderDriver(&_this->displays[i], &GDI_RenderDriver);
}
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}
SDL_Renderer *
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GDI_CreateRenderer(SDL_Window * window, Uint32 flags)
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{
SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
SDL_Renderer *renderer;
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GDI_RenderData *data;
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int bmi_size;
HBITMAP hbm;
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int i, n;
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renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
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if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
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data = (GDI_RenderData *) SDL_calloc(1, sizeof(*data));
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if (!data) {
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GDI_DestroyRenderer(renderer);
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SDL_OutOfMemory();
return NULL;
}
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windowdata->videodata->render = RENDER_GDI;
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renderer->DisplayModeChanged = GDI_DisplayModeChanged;
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renderer->CreateTexture = GDI_CreateTexture;
renderer->QueryTexturePixels = GDI_QueryTexturePixels;
renderer->SetTexturePalette = GDI_SetTexturePalette;
renderer->GetTexturePalette = GDI_GetTexturePalette;
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renderer->SetTextureAlphaMod = GDI_SetTextureAlphaMod;
renderer->SetTextureBlendMode = GDI_SetTextureBlendMode;
renderer->SetTextureScaleMode = GDI_SetTextureScaleMode;
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renderer->UpdateTexture = GDI_UpdateTexture;
renderer->LockTexture = GDI_LockTexture;
renderer->UnlockTexture = GDI_UnlockTexture;
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renderer->SetDrawBlendMode = GDI_SetDrawBlendMode;
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renderer->RenderDrawPoints = GDI_RenderDrawPoints;
renderer->RenderDrawLines = GDI_RenderDrawLines;
renderer->RenderDrawRects = GDI_RenderDrawRects;
renderer->RenderFillRects = GDI_RenderFillRects;
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renderer->RenderCopy = GDI_RenderCopy;
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renderer->RenderReadPixels = GDI_RenderReadPixels;
renderer->RenderWritePixels = GDI_RenderWritePixels;
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renderer->RenderPresent = GDI_RenderPresent;
renderer->DestroyTexture = GDI_DestroyTexture;
renderer->DestroyRenderer = GDI_DestroyRenderer;
renderer->info = GDI_RenderDriver.info;
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renderer->window = window;
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renderer->driverdata = data;
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renderer->info.flags = SDL_RENDERER_ACCELERATED;
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data->hwnd = windowdata->hwnd;
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data->window_hdc = windowdata->hdc;
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data->render_hdc = CreateCompatibleDC(data->window_hdc);
data->memory_hdc = CreateCompatibleDC(data->window_hdc);
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#ifndef NO_GETDIBBITS
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/* Fill in the compatible bitmap info */
bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
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data->bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
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if (!data->bmi) {
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GDI_DestroyRenderer(renderer);
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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);
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#endif
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if (flags & SDL_RENDERER_SINGLEBUFFER) {
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renderer->info.flags |=
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(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY);
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n = 0;
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} else if (flags & SDL_RENDERER_PRESENTFLIP2) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
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n = 2;
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} else if (flags & SDL_RENDERER_PRESENTFLIP3) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
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n = 3;
} else {
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renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
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n = 1;
}
for (i = 0; i < n; ++i) {
data->hbm[i] =
CreateCompatibleBitmap(data->window_hdc, window->w, window->h);
if (!data->hbm[i]) {
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GDI_DestroyRenderer(renderer);
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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;
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#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
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return renderer;
}
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static int
GDI_DisplayModeChanged(SDL_Renderer * renderer)
{
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
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SDL_Window *window = renderer->window;
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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]);
}
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data->current_hbm = 0;
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return 0;
}
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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);
}
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static int
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GDI_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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{
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GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
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SDL_Window *window = renderer->window;
SDL_VideoDisplay *display = window->display;
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GDI_TextureData *data;
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data = (GDI_TextureData *) SDL_calloc(1, sizeof(*data));
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if (!data) {
SDL_OutOfMemory();
return -1;
}
texture->driverdata = data;
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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data->yuv =
SDL_SW_CreateYUVTexture(texture->format, texture->w, texture->h);
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if (!data->yuv) {
return -1;
}
data->format = display->current_mode.format;
} else {
data->format = texture->format;
}
data->pitch = (texture->w * SDL_BYTESPERPIXEL(data->format));
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if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING
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|| texture->format != display->current_mode.format) {
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data->hbm = GDI_CreateDIBSection(renderdata->memory_hdc,
texture->w, texture->h,
data->pitch, data->format,
&data->hpal, &data->pixels);
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} else {
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data->hbm = CreateCompatibleBitmap(renderdata->window_hdc,
texture->w, texture->h);
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}
if (!data->hbm) {
WIN_SetError("Couldn't create bitmap");
return -1;
}
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return 0;
}
static int
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GDI_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
void **pixels, int *pitch)
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{
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GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
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if (data->yuv) {
return SDL_SW_QueryYUVTexturePixels(data->yuv, pixels, pitch);
} else {
*pixels = data->pixels;
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*pitch = data->pitch;
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return 0;
}
}
static int
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GDI_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Color * colors, int firstcolor, int ncolors)
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{
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GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
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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
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GDI_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
SDL_Color * colors, int firstcolor, int ncolors)
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{
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GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
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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;
}
}
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static int
GDI_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
{
return 0;
}
static int
GDI_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
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GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
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switch (texture->blendMode) {
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case SDL_BLENDMODE_NONE:
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if (data->premultiplied) {
/* Crap, we've lost the original pixel data... *sigh* */
}
return 0;
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#ifndef _WIN32_WCE /* WinCE has no alphablend */
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case SDL_BLENDMODE_MASK:
case SDL_BLENDMODE_BLEND:
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if (!data->premultiplied && data->pixels) {
switch (texture->format) {
case SDL_PIXELFORMAT_ARGB8888:
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SDL_PreMultiplyAlphaARGB8888(texture->w, texture->h,
(Uint32 *) data->pixels,
data->pitch);
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data->premultiplied = SDL_TRUE;
break;
case SDL_PIXELFORMAT_RGBA8888:
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SDL_PreMultiplyAlphaRGBA8888(texture->w, texture->h,
(Uint32 *) data->pixels,
data->pitch);
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data->premultiplied = SDL_TRUE;
break;
case SDL_PIXELFORMAT_ABGR8888:
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SDL_PreMultiplyAlphaABGR8888(texture->w, texture->h,
(Uint32 *) data->pixels,
data->pitch);
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data->premultiplied = SDL_TRUE;
break;
case SDL_PIXELFORMAT_BGRA8888:
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SDL_PreMultiplyAlphaBGRA8888(texture->w, texture->h,
(Uint32 *) data->pixels,
data->pitch);
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data->premultiplied = SDL_TRUE;
break;
}
}
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return 0;
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#endif
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default:
SDL_Unsupported();
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texture->blendMode = SDL_BLENDMODE_NONE;
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return -1;
}
}
static int
GDI_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
switch (texture->scaleMode) {
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case SDL_SCALEMODE_NONE:
case SDL_SCALEMODE_FAST:
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return 0;
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case SDL_SCALEMODE_SLOW:
case SDL_SCALEMODE_BEST:
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SDL_Unsupported();
589
texture->scaleMode = SDL_SCALEMODE_FAST;
590
591
592
return -1;
default:
SDL_Unsupported();
593
texture->scaleMode = SDL_SCALEMODE_NONE;
594
595
596
597
598
return -1;
}
return 0;
}
599
static int
600
601
GDI_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
602
{
603
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
604
605
606
607
608
609
610
611
if (data->yuv) {
if (SDL_SW_UpdateYUVTexture(data->yuv, rect, pixels, pitch) < 0) {
return -1;
}
UpdateYUVTextureData(texture);
return 0;
} else {
612
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
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;
}
629
if (data->premultiplied) {
630
631
632
Uint32 *pixels =
(Uint32 *) data->pixels + rect->y * (data->pitch / 4) +
rect->x;
633
634
switch (texture->format) {
case SDL_PIXELFORMAT_ARGB8888:
635
636
SDL_PreMultiplyAlphaARGB8888(rect->w, rect->h, pixels,
data->pitch);
637
638
break;
case SDL_PIXELFORMAT_RGBA8888:
639
640
SDL_PreMultiplyAlphaRGBA8888(rect->w, rect->h, pixels,
data->pitch);
641
642
break;
case SDL_PIXELFORMAT_ABGR8888:
643
644
SDL_PreMultiplyAlphaABGR8888(rect->w, rect->h, pixels,
data->pitch);
645
646
break;
case SDL_PIXELFORMAT_BGRA8888:
647
648
SDL_PreMultiplyAlphaBGRA8888(rect->w, rect->h, pixels,
data->pitch);
649
650
651
break;
}
}
652
} else if (rect->w == texture->w && pitch == data->pitch) {
653
#ifndef NO_GETDIBBITS
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657
658
659
if (!SetDIBits
(renderdata->window_hdc, data->hbm, rect->y, rect->h, pixels,
renderdata->bmi, DIB_RGB_COLORS)) {
WIN_SetError("SetDIBits()");
return -1;
}
660
661
662
663
#else
SDL_SetError("FIXME: Update Texture");
return -1;
#endif
664
665
666
667
668
669
670
671
672
673
} 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
674
675
676
GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
677
{
678
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
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680
681
682
if (data->yuv) {
return SDL_SW_LockYUVTexture(data->yuv, rect, markDirty, pixels,
pitch);
683
} else if (data->pixels) {
684
#ifndef _WIN32_WCE
685
/* WinCE has no GdiFlush */
686
GdiFlush();
687
#endif
688
689
690
691
692
*pixels =
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = data->pitch;
return 0;
693
694
695
} else {
SDL_SetError("No pixels available");
return -1;
696
697
698
699
}
}
static void
700
GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
701
{
702
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
703
704
705
706
707
708
709
if (data->yuv) {
SDL_SW_UnlockYUVTexture(data->yuv);
UpdateYUVTextureData(texture);
}
}
710
711
712
713
714
715
716
717
718
719
720
721
722
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;
}
}
723
static int
724
725
GDI_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
int count)
726
727
{
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
728
729
int i;
COLORREF color;
730
731
if (data->makedirty) {
732
/* Get the smallest rectangle that contains everything */
733
SDL_Window *window = renderer->window;
734
735
SDL_Rect rect;
736
737
738
739
740
741
742
743
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;
}
744
745
746
747
SDL_AddDirtyRect(&data->dirty, &rect);
}
748
749
750
751
752
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);
}
753
754
755
756
return 0;
}
static int
757
758
GDI_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
int count)
759
760
{
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
761
HPEN pen;
762
763
764
BOOL status;
if (data->makedirty) {
765
/* Get the smallest rectangle that contains everything */
766
SDL_Window *window = renderer->window;
767
768
769
770
771
772
773
774
775
776
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;
777
}
778
779
780
781
SDL_AddDirtyRect(&data->dirty, &rect);
}
782
783
784
/* 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);
785
786
787
788
789
790
791
792
793
794
795
{
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);
}
796
DeleteObject(pen);
797
798
/* Need to close the endpoint of the line */
799
800
801
802
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));
}
803
804
if (!status) {
805
WIN_SetError("Polyline()");
806
807
808
809
810
return -1;
}
return 0;
}
811
static int
812
813
814
815
816
817
818
819
820
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) {
821
SDL_Window *window = renderer->window;
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
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)
871
{
872
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
873
RECT rc;
874
HBRUSH brush;
875
int i, status = 1;
876
877
if (data->makedirty) {
878
SDL_Window *window = renderer->window;
879
880
881
882
883
884
SDL_Rect clip, rect;
clip.x = 0;
clip.y = 0;
clip.w = window->w;
clip.h = window->h;
885
886
887
888
889
890
891
for (i = 0; i < count; ++i) {
if (SDL_IntersectRect(rects[i], &clip, &rect)) {
SDL_AddDirtyRect(&data->dirty, &rect);
}
}
}
892
893
/* Should we cache the brushes? .. it looks like GDI does for us. :) */
894
brush = CreateSolidBrush(RGB(renderer->r, renderer->g, renderer->b));
895
SelectObject(data->current_hdc, brush);
896
897
898
899
900
901
902
903
904
905
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);
}
906
907
908
909
910
911
912
913
914
915
DeleteObject(brush);
if (!status) {
WIN_SetError("FillRect()");
return -1;
}
return 0;
}
static int
916
GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
917
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
918
{
919
920
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
GDI_TextureData *texturedata = (GDI_TextureData *) texture->driverdata;
921
922
923
924
925
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, dstrect);
}
926
927
928
929
930
SelectObject(data->memory_hdc, texturedata->hbm);
if (texturedata->hpal) {
SelectPalette(data->memory_hdc, texturedata->hpal, TRUE);
RealizePalette(data->memory_hdc);
}
931
if (texture->blendMode & (SDL_BLENDMODE_MASK | SDL_BLENDMODE_BLEND)) {
932
933
934
935
#ifdef _WIN32_WCE
SDL_SetError("Texture has blendmode not supported under WinCE");
return -1;
#else
936
BLENDFUNCTION blendFunc = {
937
938
AC_SRC_OVER,
0,
939
texture->a,
940
941
942
943
944
945
946
947
948
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;
}
949
#endif
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
} 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;
}
972
973
974
975
976
static int
GDI_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, void * pixels, int pitch)
{
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
977
978
SDL_Window *window = renderer->window;
SDL_VideoDisplay *display = window->display;
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
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()");