/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2012 The ManaPlus Developers * * This file is part of The ManaPlus Client. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "graphics.h" #include "graphicsvertexes.h" #include "logger.h" #include "resources/image.h" #include "resources/imageloader.h" #include "utils/stringutils.h" #include <guichan/sdl/sdlpixel.hpp> #include <SDL_gfxBlitFunc.h> #include "debug.h" static unsigned int *cR = nullptr; static unsigned int *cG = nullptr; static unsigned int *cB = nullptr; Graphics::Graphics(): mWidth(0), mHeight(0), mBpp(0), mFullscreen(false), mHWAccel(false), mBlitMode(BLIT_NORMAL), mRedraw(false), mDoubleBuffer(false), mSecure(false), mOpenGL(0), mEnableResize(false), mNoFrame(false), mOldPixel(0), mOldAlpha(0) { mRect.x = 0; mRect.y = 0; mRect.w = 0; mRect.h = 0; } Graphics::~Graphics() { _endDraw(); } bool Graphics::setVideoMode(int w, int h, int bpp, bool fs, bool hwaccel, bool resize, bool noFrame) { logger->log("Setting video mode %dx%d %s", w, h, fs ? "fullscreen" : "windowed"); int displayFlags = SDL_ANYFORMAT; mWidth = w; mHeight = h; mBpp = bpp; mFullscreen = fs; mHWAccel = hwaccel; mEnableResize = resize; mNoFrame = noFrame; if (fs) displayFlags |= SDL_FULLSCREEN; else if (resize) displayFlags |= SDL_RESIZABLE; if (hwaccel) displayFlags |= SDL_HWSURFACE | SDL_DOUBLEBUF; else displayFlags |= SDL_SWSURFACE; if (noFrame) displayFlags |= SDL_NOFRAME; setTarget(SDL_SetVideoMode(w, h, bpp, displayFlags)); if (!mTarget) return false; mRect.w = mTarget->w; mRect.h = mTarget->h; return videoInfo(); } bool Graphics::videoInfo() { char videoDriverName[65]; if (SDL_VideoDriverName(videoDriverName, 64)) logger->log("Using video driver: %s", videoDriverName); else logger->log1("Using video driver: unknown"); mDoubleBuffer = ((mTarget->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF); logger->log("Double buffer mode: %s", mDoubleBuffer ? "yes" : "no"); if (mTarget->format) { logger->log("Bits per pixel: %d", mTarget->format->BytesPerPixel); // bpp = mTarget->format->BytesPerPixel; } const SDL_VideoInfo *vi = SDL_GetVideoInfo(); if (!vi) return false; logger->log("Possible to create hardware surfaces: %s", ((vi->hw_available) ? "yes" : "no")); logger->log("Window manager available: %s", ((vi->wm_available) ? "yes" : "no")); logger->log("Accelerated hardware to hardware blits: %s", ((vi->blit_hw) ? "yes" : "no")); logger->log("Accelerated hardware to hardware colorkey blits: %s", ((vi->blit_hw_CC) ? "yes" : "no")); logger->log("Accelerated hardware to hardware alpha blits: %s", ((vi->blit_hw_A) ? "yes" : "no")); logger->log("Accelerated software to hardware blits: %s", ((vi->blit_sw) ? "yes" : "no")); logger->log("Accelerated software to hardware colorkey blits: %s", ((vi->blit_sw_CC) ? "yes" : "no")); logger->log("Accelerated software to hardware alpha blits: %s", ((vi->blit_sw_A) ? "yes" : "no")); logger->log("Accelerated color fills: %s", ((vi->blit_fill) ? "yes" : "no")); logger->log("Available video memory: %d", vi->video_mem); return true; } bool Graphics::setFullscreen(bool fs) { if (mFullscreen == fs) return true; return setVideoMode(mWidth, mHeight, mBpp, fs, mHWAccel, mEnableResize, mNoFrame); } bool Graphics::resizeScreen(int width, int height) { if (mWidth == width && mHeight == height) return true; const int prevWidth = mWidth; const int prevHeight = mHeight; _endDraw(); bool success = setVideoMode(width, height, mBpp, mFullscreen, mHWAccel, mEnableResize, mNoFrame); // If it didn't work, try to restore the previous size. If that didn't // work either, bail out (but then we're in deep trouble). if (!success) { if (!setVideoMode(prevWidth, prevHeight, mBpp, mFullscreen, mHWAccel, mEnableResize, mNoFrame)) { return false; } } _beginDraw(); return success; } int Graphics::getWidth() const { return mWidth; } int Graphics::getHeight() const { return mHeight; } bool Graphics::drawImage(Image *image, int x, int y) { if (image) { return drawImage(image, 0, 0, x, y, image->mBounds.w, image->mBounds.h); } else { return false; } } bool Graphics::drawRescaledImage(Image *image, int srcX, int srcY, int dstX, int dstY, int width, int height, int desiredWidth, int desiredHeight, bool useColor A_UNUSED) { // Check that preconditions for blitting are met. if (!mTarget || !image) return false; if (!image->mSDLSurface) return false; Image *tmpImage = image->SDLgetScaledImage(desiredWidth, desiredHeight); bool returnValue = false; if (!tmpImage) return false; if (!tmpImage->mSDLSurface) return false; dstX += mClipStack.top().xOffset; dstY += mClipStack.top().yOffset; srcX += image->mBounds.x; srcY += image->mBounds.y; SDL_Rect dstRect; SDL_Rect srcRect; dstRect.x = static_cast<short>(dstX); dstRect.y = static_cast<short>(dstY); srcRect.x = static_cast<short>(srcX); srcRect.y = static_cast<short>(srcY); srcRect.w = static_cast<Uint16>(width); srcRect.h = static_cast<Uint16>(height); returnValue = !(SDL_BlitSurface(tmpImage->mSDLSurface, &srcRect, mTarget, &dstRect) < 0); delete tmpImage; return returnValue; } bool Graphics::drawImage(Image *image, int srcX, int srcY, int dstX, int dstY, int width, int height, bool) { // Check that preconditions for blitting are met. if (!mTarget || !image || !image->mSDLSurface) return false; dstX += mClipStack.top().xOffset; dstY += mClipStack.top().yOffset; srcX += image->mBounds.x; srcY += image->mBounds.y; SDL_Rect dstRect; SDL_Rect srcRect; dstRect.x = static_cast<short>(dstX); dstRect.y = static_cast<short>(dstY); srcRect.x = static_cast<short>(srcX); srcRect.y = static_cast<short>(srcY); srcRect.w = static_cast<Uint16>(width); srcRect.h = static_cast<Uint16>(height); if (mBlitMode == BLIT_NORMAL) { return !(SDL_BlitSurface(image->mSDLSurface, &srcRect, mTarget, &dstRect) < 0); } else { return !(SDL_gfxBlitRGBA(image->mSDLSurface, &srcRect, mTarget, &dstRect) < 0); } } void Graphics::drawImage(gcn::Image const *image, int srcX, int srcY, int dstX, int dstY, int width, int height) { ProxyImage const *srcImage = dynamic_cast< ProxyImage const * >(image); if (!srcImage) return; drawImage(srcImage->getImage(), srcX, srcY, dstX, dstY, width, height, true); } void Graphics::drawImagePattern(Image *image, int x, int y, int w, int h) { // Check that preconditions for blitting are met. if (!mTarget || !image) return; if (!image->mSDLSurface) return; const int iw = image->mBounds.w; const int ih = image->mBounds.h; if (iw == 0 || ih == 0) return; for (int py = 0; py < h; py += ih) // Y position on pattern plane { int dh = (py + ih >= h) ? h - py : ih; int srcY = image->mBounds.y; int dstY = y + py + mClipStack.top().yOffset; for (int px = 0; px < w; px += iw) // X position on pattern plane { int dw = (px + iw >= w) ? w - px : iw; int srcX = image->mBounds.x; int dstX = x + px + mClipStack.top().xOffset; SDL_Rect dstRect; SDL_Rect srcRect; dstRect.x = static_cast<short>(dstX); dstRect.y = static_cast<short>(dstY); srcRect.x = static_cast<short>(srcX); srcRect.y = static_cast<short>(srcY); srcRect.w = static_cast<Uint16>(dw); srcRect.h = static_cast<Uint16>(dh); SDL_BlitSurface(image->mSDLSurface, &srcRect, mTarget, &dstRect); } } } void Graphics::drawRescaledImagePattern(Image *image, int x, int y, int w, int h, int scaledWidth, int scaledHeight) { // Check that preconditions for blitting are met. if (!mTarget || !image) return; if (!image->mSDLSurface) return; if (scaledHeight == 0 || scaledWidth == 0) return; Image *tmpImage = image->SDLgetScaledImage(scaledWidth, scaledHeight); if (!tmpImage) return; const int iw = tmpImage->mBounds.w; const int ih = tmpImage->mBounds.h; if (iw == 0 || ih == 0) return; for (int py = 0; py < h; py += ih) // Y position on pattern plane { int dh = (py + ih >= h) ? h - py : ih; int srcY = tmpImage->mBounds.y; int dstY = y + py + mClipStack.top().yOffset; for (int px = 0; px < w; px += iw) // X position on pattern plane { int dw = (px + iw >= w) ? w - px : iw; int srcX = tmpImage->mBounds.x; int dstX = x + px + mClipStack.top().xOffset; SDL_Rect dstRect; SDL_Rect srcRect; dstRect.x = static_cast<short>(dstX); dstRect.y = static_cast<short>(dstY); srcRect.x = static_cast<short>(srcX); srcRect.y = static_cast<short>(srcY); srcRect.w = static_cast<Uint16>(dw); srcRect.h = static_cast<Uint16>(dh); SDL_BlitSurface(tmpImage->mSDLSurface, &srcRect, mTarget, &dstRect); } } delete tmpImage; } void Graphics::drawImageRect(int x, int y, int w, int h, Image *topLeft, Image *topRight, Image *bottomLeft, Image *bottomRight, Image *top, Image *right, Image *bottom, Image *left, Image *center) { const bool drawMain = center && topLeft && topRight && bottomLeft && bottomRight; // Draw the center area if (center && drawMain) { drawImagePattern(center, topLeft->getWidth() + x, topLeft->getHeight() + y, w - topLeft->getWidth() - topRight->getWidth(), h - topLeft->getHeight() - bottomLeft->getHeight()); } // Draw the sides if (top && left && bottom && right) { drawImagePattern(top, x + left->getWidth(), y, w - left->getWidth() - right->getWidth(), top->getHeight()); drawImagePattern(bottom, x + left->getWidth(), h - bottom->getHeight() + y, w - left->getWidth() - right->getWidth(), bottom->getHeight()); drawImagePattern(left, x, y + top->getHeight(), left->getWidth(), h - top->getHeight() - bottom->getHeight()); drawImagePattern(right, x + w - right->getWidth(), top->getHeight() + y, right->getWidth(), h - top->getHeight() - bottom->getHeight()); } // Draw the corners if (drawMain) { drawImage(topLeft, x, y); drawImage(topRight, x + w - topRight->getWidth(), y); drawImage(bottomLeft, x, h - bottomLeft->getHeight() + y); drawImage(bottomRight, x + w - bottomRight->getWidth(), y + h - bottomRight->getHeight()); } } void Graphics::drawImageRect(int x, int y, int w, int h, const ImageRect &imgRect) { drawImageRect(x, y, w, h, imgRect.grid[0], imgRect.grid[2], imgRect.grid[6], imgRect.grid[8], imgRect.grid[1], imgRect.grid[5], imgRect.grid[7], imgRect.grid[3], imgRect.grid[4]); } void Graphics::drawImageRect2(GraphicsVertexes* vert, const ImageRect &imgRect) { if (!vert) return; vert->setPtr(0); const bool drawMain = imgRect.grid[4] && imgRect.grid[0] && imgRect.grid[2] && imgRect.grid[6] && imgRect.grid[8]; if (drawMain) { // center drawImagePattern2(vert, imgRect.grid[4]); } vert->incPtr(); // top drawImagePattern2(vert, imgRect.grid[1]); vert->incPtr(); // bottom drawImagePattern2(vert, imgRect.grid[7]); vert->incPtr(); // left drawImagePattern2(vert, imgRect.grid[3]); vert->incPtr(); // right drawImagePattern2(vert, imgRect.grid[5]); vert->incPtr(); // Draw the corners if (drawMain) { drawImage(imgRect.grid[0], 0, 0); drawImage(imgRect.grid[2], vert->mW - imgRect.grid[2]->getWidth(), 0); drawImage(imgRect.grid[6], 0, vert->mH - imgRect.grid[6]->getHeight()); drawImage(imgRect.grid[8], vert->mW - imgRect.grid[8]->getWidth(), vert->mH - imgRect.grid[8]->getHeight()); } } void Graphics::drawImagePattern2(GraphicsVertexes *vert, Image *img) { // here not checking input parameters std::vector<DoubleRect*> *arr = vert->getRectsSDL(); for (std::vector<DoubleRect*>::const_iterator it = arr->begin(), it_end = arr->end(); it != it_end; ++it) { SDL_LowerBlit(img->mSDLSurface, &(*it)->src, mTarget, &(*it)->dst); // SDL_BlitSurface(img->mSDLSurface, &(*it)->src, mTarget, &(*it)->dst); } } bool Graphics::calcImageRect(GraphicsVertexes* vert, int x, int y, int w, int h, Image *topLeft, Image *topRight, Image *bottomLeft, Image *bottomRight, Image *top, Image *right, Image *bottom, Image *left, Image *center) { if (!vert) return false; const bool drawMain = center && topLeft && topRight && bottomLeft && bottomRight; vert->init(x, y, w, h); pushClipArea(gcn::Rectangle(vert->mX, vert->mY, vert->mW, vert->mH)); // Draw the center area if (center && drawMain) { calcImagePattern(vert, center, topLeft->getWidth(), topLeft->getHeight(), w - topLeft->getWidth() - topRight->getWidth(), h - topLeft->getHeight() - bottomLeft->getHeight()); } else { vert->incPtr(1); } // Draw the sides if (top && left && bottom && right) { calcImagePattern(vert, top, left->getWidth(), 0, w - left->getWidth() - right->getWidth(), top->getHeight()); calcImagePattern(vert, bottom, left->getWidth(), h - bottom->getHeight(), w - left->getWidth() - right->getWidth(), bottom->getHeight()); calcImagePattern(vert, left, 0, top->getHeight(), left->getWidth(), h - top->getHeight() - bottom->getHeight()); calcImagePattern(vert, right, w - right->getWidth(), top->getHeight(), right->getWidth(), h - top->getHeight() - bottom->getHeight()); } else { vert->incPtr(4); } popClipArea(); return 0; } void Graphics::calcImagePattern(GraphicsVertexes* vert, Image *image, int x, int y, int w, int h) { // Check that preconditions for blitting are met. if (!vert || !mTarget || !image || !image->mSDLSurface || !vert->sdl) { vert->incPtr(1); return; } vert->clearSDL(); const int iw = image->mBounds.w; const int ih = image->mBounds.h; if (iw == 0 || ih == 0) { vert->incPtr(1); return; } for (int py = 0; py < h; py += ih) // Y position on pattern plane { int dh = (py + ih >= h) ? h - py : ih; int srcY = image->mBounds.y; int dstY = y + py + mClipStack.top().yOffset; for (int px = 0; px < w; px += iw) // X position on pattern plane { int dw = (px + iw >= w) ? w - px : iw; int srcX = image->mBounds.x; int dstX = x + px + mClipStack.top().xOffset; SDL_Rect dstRect; SDL_Rect srcRect; dstRect.x = static_cast<short>(dstX); dstRect.y = static_cast<short>(dstY); srcRect.x = static_cast<short>(srcX); srcRect.y = static_cast<short>(srcY); srcRect.w = static_cast<Uint16>(dw); srcRect.h = static_cast<Uint16>(dh); if (SDL_FakeUpperBlit(image->mSDLSurface, &srcRect, mTarget, &dstRect) == 1) { vert->pushSDL(srcRect, dstRect); } } } vert->incPtr(1); } void Graphics::calcTile(ImageVertexes *vert, int x, int y) { // Check that preconditions for blitting are met. if (!vert || !vert->image || !vert->image->mSDLSurface) return; const Image *image = vert->image; x += mClipStack.top().xOffset; y += mClipStack.top().yOffset; DoubleRect *rect = new DoubleRect(); rect->dst.x = static_cast<short>(x); rect->dst.y = static_cast<short>(y); rect->src.x = static_cast<short>(image->mBounds.x); rect->src.y = static_cast<short>(image->mBounds.y); rect->src.w = static_cast<Uint16>(image->mBounds.w); rect->src.h = static_cast<Uint16>(image->mBounds.h); if (SDL_FakeUpperBlit(image->mSDLSurface, &rect->src, mTarget, &rect->dst) == 1) { vert->sdl.push_back(rect); } else { delete rect; } } void Graphics::drawTile(ImageVertexes *vert) { // vert and img must be != 0 Image *img = vert->image; DoubleRects *rects = &vert->sdl; DoubleRects::const_iterator it = rects->begin(); DoubleRects::const_iterator it_end = rects->end(); while (it != it_end) { SDL_LowerBlit(img->mSDLSurface, &(*it)->src, mTarget, &(*it)->dst); ++ it; } } void Graphics::updateScreen() { if (mDoubleBuffer) { SDL_Flip(mTarget); } else { SDL_UpdateRects(mTarget, 1, &mRect); // SDL_UpdateRect(mTarget, 0, 0, 0, 0); } } SDL_Surface *Graphics::getScreenshot() { #if SDL_BYTEORDER == SDL_BIG_ENDIAN int rmask = 0xff000000; int gmask = 0x00ff0000; int bmask = 0x0000ff00; #else int rmask = 0x000000ff; int gmask = 0x0000ff00; int bmask = 0x00ff0000; #endif int amask = 0x00000000; SDL_Surface *screenshot = SDL_CreateRGBSurface(SDL_SWSURFACE, mTarget->w, mTarget->h, 24, rmask, gmask, bmask, amask); if (screenshot) SDL_BlitSurface(mTarget, nullptr, screenshot, nullptr); return screenshot; } bool Graphics::drawNet(int x1, int y1, int x2, int y2, int width, int height) { for (int y = y1; y < y2; y += height) drawLine(x1, y, x2, y); for (int x = x1; x < x2; x += width) drawLine(x, y1, x, y2); return true; } bool Graphics::calcWindow(GraphicsVertexes* vert, int x, int y, int w, int h, const ImageRect &imgRect) { return calcImageRect(vert, x, y, w, h, imgRect.grid[0], imgRect.grid[2], imgRect.grid[6], imgRect.grid[8], imgRect.grid[1], imgRect.grid[5], imgRect.grid[7], imgRect.grid[3], imgRect.grid[4]); } int Graphics::SDL_FakeUpperBlit(SDL_Surface *src, SDL_Rect *srcrect, SDL_Surface *dst, SDL_Rect *dstrect) { SDL_Rect fulldst; int srcx, srcy, w, h; /* Make sure the surfaces aren't locked */ if (!src || !dst) return -1; if (src->locked || dst->locked) return -1; /* If the destination rectangle is nullptr, use the entire dest surface */ if (!dstrect) { fulldst.x = 0; fulldst.y = 0; dstrect = &fulldst; } /* clip the source rectangle to the source surface */ if (srcrect) { int maxw, maxh; srcx = srcrect->x; w = srcrect->w; if (srcx < 0) { w += srcx; dstrect->x -= srcx; srcx = 0; } maxw = src->w - srcx; if (maxw < w) w = maxw; srcy = srcrect->y; h = srcrect->h; if (srcy < 0) { h += srcy; dstrect->y -= srcy; srcy = 0; } maxh = src->h - srcy; if (maxh < h) h = maxh; } else { srcx = 0; srcy = 0; w = src->w; h = src->h; } /* clip the destination rectangle against the clip rectangle */ { SDL_Rect *clip = &dst->clip_rect; int dx, dy; dx = clip->x - dstrect->x; if (dx > 0) { w -= dx; dstrect->x += dx; srcx += dx; } dx = dstrect->x + w - clip->x - clip->w; if (dx > 0) w -= dx; dy = clip->y - dstrect->y; if (dy > 0) { h -= dy; dstrect->y += dy; srcy += dy; } dy = dstrect->y + h - clip->y - clip->h; if (dy > 0) h -= dy; } if (w > 0 && h > 0) { srcrect->x = srcx; srcrect->y = srcy; srcrect->w = dstrect->w = w; srcrect->h = dstrect->h = h; return 1; // return SDL_LowerBlit(src, &sr, dst, dstrect); } dstrect->w = dstrect->h = 0; return 0; } void Graphics::fillRectangle(const gcn::Rectangle& rectangle) { if (mClipStack.empty()) return; const gcn::ClipRectangle& top = mClipStack.top(); gcn::Rectangle area = rectangle; area.x += top.xOffset; area.y += top.yOffset; if (!area.isIntersecting(top)) return; if (mAlpha) { int x1 = area.x > top.x ? area.x : top.x; int y1 = area.y > top.y ? area.y : top.y; int x2 = area.x + area.width < top.x + top.width ? area.x + area.width : top.x + top.width; int y2 = area.y + area.height < top.y + top.height ? area.y + area.height : top.y + top.height; int x, y; SDL_LockSurface(mTarget); const int bpp = mTarget->format->BytesPerPixel; Uint32 pixel = SDL_MapRGB(mTarget->format, mColor.r, mColor.g, mColor.b); switch (bpp) { case 1: for (y = y1; y < y2; y++) { Uint8 *p = static_cast<Uint8 *>(mTarget->pixels) + y * mTarget->pitch; for (x = x1; x < x2; x++) *(p + x) = pixel; } break; case 2: for (y = y1; y < y2; y++) { Uint8 *p0 = static_cast<Uint8 *>(mTarget->pixels) + y * mTarget->pitch; for (x = x1; x < x2; x++) { Uint8 *p = p0 + x * 2; *reinterpret_cast<Uint16 *>(p) = gcn::SDLAlpha16( pixel, *reinterpret_cast<Uint32 *>(p), mColor.a, mTarget->format); } } break; case 3: { const int ca = 255 - mColor.a; const int cr = mColor.r * mColor.a; const int cg = mColor.g * mColor.a; const int cb = mColor.b * mColor.a; for (y = y1; y < y2; y++) { Uint8 *p0 = static_cast<Uint8 *>(mTarget->pixels) + y * mTarget->pitch; for (x = x1; x < x2; x++) { Uint8 *p = p0 + x * 3; #if SDL_BYTEORDER == SDL_BIG_ENDIAN p[2] = (p[2] * ca + cb) >> 8; p[1] = (p[1] * ca + cg) >> 8; p[0] = (p[0] * ca + cr) >> 8; #else p[0] = (p[0] * ca + cb) >> 8; p[1] = (p[1] * ca + cg) >> 8; p[2] = (p[2] * ca + cr) >> 8; #endif } } break; } case 4: { #if SDL_BYTEORDER == SDL_BIG_ENDIAN const unsigned pb = (pixel & 0xff) * mColor.a; const unsigned pg = (pixel & 0xff00) * mColor.a; const unsigned pr = (pixel & 0xff0000) * mColor.a; const unsigned a1 = (255 - mColor.a); for (y = y1; y < y2; y++) { Uint8 *p0 = static_cast<Uint8 *>(mTarget->pixels) + y * mTarget->pitch; for (x = x1; x < x2; x++) { Uint8 *p = p0 + x * 4; Uint32 dst = *reinterpret_cast<Uint32 *>(p); const unsigned int b = (pb + (dst & 0xff) * a1) >> 8; const unsigned int g = (pg + (dst & 0xff00) * a1) >> 8; const unsigned int r = (pr + (dst & 0xff0000) * a1) >> 8; *reinterpret_cast<Uint32 *>(p) = ((b & 0xff) | (g & 0xff00) | (r & 0xff0000)); } } #else if (!cR) { cR = new unsigned int[0x100]; cG = new unsigned int[0x100]; cB = new unsigned int[0x100]; mOldPixel = 0; mOldAlpha = mColor.a; } if (pixel != mOldPixel || mColor.a != mOldAlpha) { const unsigned pb = (pixel & 0xff) * mColor.a; const unsigned pg = (pixel & 0xff00) * mColor.a; const unsigned pr = (pixel & 0xff0000) * mColor.a; const unsigned a1 = (255 - mColor.a); const unsigned int a2 = a1 * 0xff; const unsigned int a3 = a1 * 0xff00; for (int f = 0; f <= 0xff; f ++) { cB[f] = ((pb + f * a1) >> 8) & 0xff; cG[f] = ((pg + f * a2) >> 8) & 0xff00; cR[f] = ((pr + f * a3) >> 8) & 0xff0000; } mOldPixel = pixel; mOldAlpha = mColor.a; } for (y = y1; y < y2; y++) { Uint32 *p0 = reinterpret_cast<Uint32*>(static_cast<Uint8*>( mTarget->pixels) + y * mTarget->pitch); for (x = x1; x < x2; x++) { Uint32 *p = p0 + x; Uint32 dst = *reinterpret_cast<Uint32*>(p); *p = cB[dst & 0xff] | cG[(dst & 0xff00) >> 8] | cR[(dst & 0xff0000) >> 16]; } } #endif break; } default: break; } SDL_UnlockSurface(mTarget); } else { SDL_Rect rect; rect.x = area.x; rect.y = area.y; rect.w = area.width; rect.h = area.height; Uint32 color = SDL_MapRGBA(mTarget->format, mColor.r, mColor.g, mColor.b, mColor.a); SDL_FillRect(mTarget, &rect, color); } }