/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2013 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/>. */ #ifdef USE_SDL2 #include "render/sdl2softwaregraphics.h" #include "main.h" #include "configuration.h" #include "graphicsmanager.h" #include "graphicsvertexes.h" #include "logger.h" #include "resources/imagehelper.h" #include "resources/sdl2softwareimagehelper.h" #include "utils/sdlcheckutils.h" #include <guichan/sdl/sdlpixel.hpp> #include "debug.h" #if SDL_BYTEORDER == SDL_LIL_ENDIAN static unsigned int *cR = nullptr; static unsigned int *cG = nullptr; static unsigned int *cB = nullptr; #endif SDL2SoftwareGraphics::SDL2SoftwareGraphics() : Graphics(), mRendererFlags(SDL_RENDERER_SOFTWARE), mSurface(nullptr), mOldPixel(0), mOldAlpha(0) { mOpenGL = RENDER_SOFTWARE; mName = "Software"; } SDL2SoftwareGraphics::~SDL2SoftwareGraphics() { } bool SDL2SoftwareGraphics::drawRescaledImage(const Image *const image, int srcX, int srcY, int dstX, int dstY, const int width, const int height, const int desiredWidth, const int desiredHeight, const bool useColor A_UNUSED) { FUNC_BLOCK("Graphics::drawRescaledImage", 1) // Check that preconditions for blitting are met. if (!mSurface || !image) return false; if (!image->mSDLSurface) return false; Image *const tmpImage = image->SDLgetScaledImage( desiredWidth, desiredHeight); if (!tmpImage) return false; if (!tmpImage->mSDLSurface) return false; const gcn::ClipRectangle &top = mClipStack.top(); const SDL_Rect &bounds = image->mBounds; SDL_Rect srcRect = { static_cast<int16_t>(srcX + bounds.x), static_cast<int16_t>(srcY + bounds.y), static_cast<uint16_t>(width), static_cast<uint16_t>(height) }; SDL_Rect dstRect = { static_cast<int16_t>(dstX + top.xOffset), static_cast<int16_t>(dstY + top.yOffset), 0, 0 }; const bool returnValue = !(SDL_BlitSurface(tmpImage->mSDLSurface, &srcRect, mSurface, &dstRect) < 0); delete tmpImage; return returnValue; } bool SDL2SoftwareGraphics::drawImage2(const Image *const image, int srcX, int srcY, int dstX, int dstY, const int width, const int height, const bool useColor A_UNUSED) { FUNC_BLOCK("Graphics::drawImage2", 1) // Check that preconditions for blitting are met. if (!mSurface || !image || !image->mSDLSurface) return false; const gcn::ClipRectangle &top = mClipStack.top(); const SDL_Rect &bounds = image->mBounds; SDL_Surface *const src = image->mSDLSurface; srcX += bounds.x; srcY += bounds.y; dstX += top.xOffset; dstY += top.yOffset; int w = width; int h = height; if (srcX < 0) { w += srcX; dstX -= static_cast<int16_t>(srcX); srcX = 0; } const int maxw = src->w - srcX; if (maxw < w) w = maxw; if (srcY < 0) { h += srcY; dstY -= static_cast<int16_t>(srcY); srcY = 0; } const int maxh = src->h - srcY; if (maxh < h) h = maxh; const SDL_Rect *const clip = &mSurface->clip_rect; const int clipX = clip->x; const int clipY = clip->y; int dx = clipX - dstX; if (dx > 0) { w -= dx; dstX += static_cast<int16_t>(dx); srcX += dx; } dx = dstX + w - clipX - clip->w; if (dx > 0) w -= dx; int dy = clipY - dstY; if (dy > 0) { h -= dy; dstY += static_cast<int16_t>(dy); srcY += dy; } dy = dstY + h - clipY - clip->h; if (dy > 0) h -= dy; if (w > 0 && h > 0) { SDL_Rect srcRect = { static_cast<int16_t>(srcX), static_cast<int16_t>(srcY), static_cast<uint16_t>(w), static_cast<uint16_t>(h) }; SDL_Rect dstRect = { static_cast<int16_t>(dstX), static_cast<int16_t>(dstY), static_cast<uint16_t>(w), static_cast<uint16_t>(h) }; return SDL_LowerBlit(src, &srcRect, mSurface, &dstRect); } return 0; } void SDL2SoftwareGraphics::drawImagePattern(const Image *const image, const int x, const int y, const int w, const int h) { FUNC_BLOCK("Graphics::drawImagePattern", 1) // Check that preconditions for blitting are met. if (!mSurface || !image) return; if (!image->mSDLSurface) return; const SDL_Rect &bounds = image->mBounds; const int iw = bounds.w; const int ih = bounds.h; if (iw == 0 || ih == 0) return; const gcn::ClipRectangle &top = mClipStack.top(); const int xOffset = top.xOffset + x; const int yOffset = top.yOffset + y; const int srcX = bounds.x; const int srcY = bounds.y; SDL_Surface *const src = image->mSDLSurface; const SDL_Rect *const clip = &mSurface->clip_rect; const int clipX = clip->x; const int clipY = clip->y; for (int py = 0; py < h; py += ih) { const int dh = (py + ih >= h) ? h - py : ih; int dstY = py + yOffset; int y2 = srcY; int h2 = dh; if (y2 < 0) { h2 += y2; dstY -= static_cast<int16_t>(y2); y2 = 0; } const int maxh = src->h - y2; if (maxh < h2) h2 = maxh; int dy = clipY - dstY; if (dy > 0) { h2 -= dy; dstY += static_cast<int16_t>(dy); y2 += dy; } dy = dstY + h2 - clipY - clip->h; if (dy > 0) h2 -= dy; if (h2 > 0) { for (int px = 0; px < w; px += iw) { const int dw = (px + iw >= w) ? w - px : iw; int dstX = px + xOffset; int x2 = srcX; int w2 = dw; if (x2 < 0) { w2 += x2; dstX -= static_cast<int16_t>(x2); x2 = 0; } const int maxw = src->w - x2; if (maxw < w2) w2 = maxw; int dx = clipX - dstX; if (dx > 0) { w2 -= dx; dstX += static_cast<int16_t>(dx); x2 += dx; } dx = dstX + w2 - clipX - clip->w; if (dx > 0) w2 -= dx; if (w2 > 0) { SDL_Rect srcRect = { static_cast<int16_t>(x2), static_cast<int16_t>(y2), static_cast<uint16_t>(w2), static_cast<uint16_t>(h2) }; SDL_Rect dstRect = { static_cast<int16_t>(dstX), static_cast<int16_t>(dstY), static_cast<uint16_t>(w2), static_cast<uint16_t>(h2) }; SDL_LowerBlit(src, &srcRect, mSurface, &dstRect); } // SDL_BlitSurface(image->mSDLSurface, &srcRect, mWindow, &dstRect); } } } } void SDL2SoftwareGraphics::drawRescaledImagePattern(const Image *const image, const int x, const int y, const int w, const int h, const int scaledWidth, const int scaledHeight) { // Check that preconditions for blitting are met. if (!mSurface || !image) return; if (!image->mSDLSurface) return; if (scaledHeight == 0 || scaledWidth == 0) return; Image *const tmpImage = image->SDLgetScaledImage( scaledWidth, scaledHeight); if (!tmpImage) return; const SDL_Rect &bounds = tmpImage->mBounds; const int iw = bounds.w; const int ih = bounds.h; if (iw == 0 || ih == 0) return; const gcn::ClipRectangle &top = mClipStack.top(); const int xOffset = top.xOffset + x; const int yOffset = top.yOffset + y; const int srcX = bounds.x; const int srcY = bounds.y; for (int py = 0; py < h; py += ih) // Y position on pattern plane { const int dh = (py + ih >= h) ? h - py : ih; const int dstY = py + yOffset; for (int px = 0; px < w; px += iw) // X position on pattern plane { const int dw = (px + iw >= w) ? w - px : iw; const int dstX = px + xOffset; SDL_Rect srcRect = { static_cast<int16_t>(srcX), static_cast<int16_t>(srcY), static_cast<uint16_t>(dw), static_cast<uint16_t>(dh) }; SDL_Rect dstRect = { static_cast<int16_t>(dstX), static_cast<int16_t>(dstY), 0, 0 }; SDL_BlitSurface(tmpImage->mSDLSurface, &srcRect, mSurface, &dstRect); } } delete tmpImage; } void SDL2SoftwareGraphics::calcImagePattern(ImageVertexes* const vert, const Image *const image, const int x, const int y, const int w, const int h) const { // Check that preconditions for blitting are met. if (!vert || !mSurface || !image || !image->mSDLSurface) return; const SDL_Rect &bounds = image->mBounds; const int iw = bounds.w; const int ih = bounds.h; if (iw == 0 || ih == 0) return; const gcn::ClipRectangle &top = mClipStack.top(); const int xOffset = top.xOffset + x; const int yOffset = top.yOffset + y; const int srcX = bounds.x; const int srcY = bounds.y; for (int py = 0; py < h; py += ih) // Y position on pattern plane { const int dh = (py + ih >= h) ? h - py : ih; const int dstY = py + yOffset; for (int px = 0; px < w; px += iw) // X position on pattern plane { const int dw = (px + iw >= w) ? w - px : iw; const int dstX = px + xOffset; DoubleRect *const r = new DoubleRect(); SDL_Rect &srcRect = r->src; srcRect.x = static_cast<int16_t>(srcX); srcRect.y = static_cast<int16_t>(srcY); srcRect.w = static_cast<uint16_t>(dw); srcRect.h = static_cast<uint16_t>(dh); SDL_Rect &dstRect = r->dst; dstRect.x = static_cast<int16_t>(dstX); dstRect.y = static_cast<int16_t>(dstY); if (SDL_FakeUpperBlit(image->mSDLSurface, &srcRect, mSurface, &dstRect) == 1) { vert->sdl.push_back(r); } else { delete r; } } } } void SDL2SoftwareGraphics::calcImagePattern(ImageCollection* const vertCol, const Image *const image, const int x, const int y, const int w, const int h) const { ImageVertexes *vert = nullptr; if (vertCol->currentImage != image) { vert = new ImageVertexes(); vertCol->currentImage = image; vertCol->currentVert = vert; vert->image = image; vertCol->draws.push_back(vert); } else { vert = vertCol->currentVert; } calcImagePattern(vert, image, x, y, w, h); } void SDL2SoftwareGraphics::calcTile(ImageVertexes *const vert, const Image *const image, int x, int y) const { vert->image = image; calcTileSDL(vert, x, y); } void SDL2SoftwareGraphics::calcTileSDL(ImageVertexes *const vert, int x, int y) const { // Check that preconditions for blitting are met. if (!vert || !vert->image || !vert->image->mSDLSurface) return; const Image *const image = vert->image; const gcn::ClipRectangle &top = mClipStack.top(); const SDL_Rect &bounds = image->mBounds; DoubleRect *rect = new DoubleRect(); rect->src.x = static_cast<int16_t>(bounds.x); rect->src.y = static_cast<int16_t>(bounds.y); rect->src.w = static_cast<uint16_t>(bounds.w); rect->src.h = static_cast<uint16_t>(bounds.h); rect->dst.x = static_cast<int16_t>(x + top.xOffset); rect->dst.y = static_cast<int16_t>(y + top.yOffset); if (SDL_FakeUpperBlit(image->mSDLSurface, &rect->src, mSurface, &rect->dst) == 1) { vert->sdl.push_back(rect); } else { delete rect; } } void SDL2SoftwareGraphics::calcTile(ImageCollection *const vertCol, const Image *const image, int x, int y) { if (vertCol->currentImage != image) { ImageVertexes *const vert = new ImageVertexes(); vertCol->currentImage = image; vertCol->currentVert = vert; vert->image = image; vertCol->draws.push_back(vert); calcTileSDL(vert, x, y); } else { calcTileSDL(vertCol->currentVert, x, y); } } void SDL2SoftwareGraphics::drawTile(const ImageCollection *const vertCol) { const ImageVertexesVector &draws = vertCol->draws; const ImageCollectionCIter it_end = draws.end(); for (ImageCollectionCIter it = draws.begin(); it != it_end; ++ it) { const ImageVertexes *const vert = *it; const Image *const img = vert->image; const DoubleRects *const rects = &vert->sdl; DoubleRects::const_iterator it2 = rects->begin(); const DoubleRects::const_iterator it2_end = rects->end(); while (it2 != it2_end) { SDL_LowerBlit(img->mSDLSurface, &(*it2)->src, mSurface, &(*it2)->dst); ++ it2; } } } void SDL2SoftwareGraphics::drawTile(const ImageVertexes *const vert) { // vert and img must be != 0 const Image *const img = vert->image; const DoubleRects *const rects = &vert->sdl; DoubleRects::const_iterator it = rects->begin(); const DoubleRects::const_iterator it_end = rects->end(); while (it != it_end) { SDL_LowerBlit(img->mSDLSurface, &(*it)->src, mSurface, &(*it)->dst); ++ it; } } void SDL2SoftwareGraphics::updateScreen() { BLOCK_START("Graphics::updateScreen") SDL_UpdateWindowSurfaceRects(mWindow, &mRect, 1); BLOCK_END("Graphics::updateScreen") } SDL_Surface *SDL2SoftwareGraphics::getScreenshot() { #if SDL_BYTEORDER == SDL_BIG_ENDIAN const int rmask = 0xff000000; const int gmask = 0x00ff0000; const int bmask = 0x0000ff00; #else const int rmask = 0x000000ff; const int gmask = 0x0000ff00; const int bmask = 0x00ff0000; #endif const int amask = 0x00000000; SDL_Surface *const screenshot = MSDL_CreateRGBSurface(SDL_SWSURFACE, mRect.w, mRect.h, 24, rmask, gmask, bmask, amask); if (screenshot) SDL_BlitSurface(mSurface, nullptr, screenshot, nullptr); return screenshot; } bool SDL2SoftwareGraphics::drawNet(const int x1, const int y1, const int x2, const int y2, const int width, const int height) { // +++ need use SDL_RenderDrawLines 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 SDL2SoftwareGraphics::calcWindow(ImageCollection *const vertCol, const int x, const int y, const int w, const int h, const ImageRect &imgRect) { ImageVertexes *vert = nullptr; Image *const image = imgRect.grid[4]; if (vertCol->currentImage != image) { vert = new ImageVertexes(); vertCol->currentImage = image; vertCol->currentVert = vert; vert->image = image; vertCol->draws.push_back(vert); } else { vert = vertCol->currentVert; } const Image *const *const grid = &imgRect.grid[0]; return calcImageRect(vert, x, y, w, h, grid[0], grid[2], grid[6], grid[8], grid[1], grid[5], grid[7], grid[3], grid[4]); } int SDL2SoftwareGraphics::SDL_FakeUpperBlit(const SDL_Surface *const src, SDL_Rect *const srcrect, const SDL_Surface *const dst, SDL_Rect *dstrect) const { int srcx, srcy, w, h; // Make sure the surfaces aren't locked if (!src || !dst) return -1; if (!srcrect || !dstrect) return -1; srcx = srcrect->x; w = srcrect->w; if (srcx < 0) { w += srcx; dstrect->x -= static_cast<int16_t>(srcx); srcx = 0; } int maxw = src->w - srcx; if (maxw < w) w = maxw; srcy = srcrect->y; h = srcrect->h; if (srcy < 0) { h += srcy; dstrect->y -= static_cast<int16_t>(srcy); srcy = 0; } int maxh = src->h - srcy; if (maxh < h) h = maxh; const SDL_Rect *const clip = &dst->clip_rect; const int clipX = clip->x; const int clipY = clip->y; int dx = clipX - dstrect->x; if (dx > 0) { w -= dx; dstrect->x += static_cast<int16_t>(dx); srcx += dx; } dx = dstrect->x + w - clipX - clip->w; if (dx > 0) w -= dx; int dy = clipY - dstrect->y; if (dy > 0) { h -= dy; dstrect->y += static_cast<int16_t>(dy); srcy += dy; } dy = dstrect->y + h - clipY - clip->h; if (dy > 0) h -= dy; if (w > 0 && h > 0) { if (srcrect) { srcrect->x = static_cast<int16_t>(srcx); srcrect->y = static_cast<int16_t>(srcy); srcrect->w = static_cast<int16_t>(w); srcrect->h = static_cast<int16_t>(h); } dstrect->w = static_cast<int16_t>(w); dstrect->h = static_cast<int16_t>(h); return 1; // return SDL_LowerBlit(src, &sr, dst, dstrect); } dstrect->w = dstrect->h = 0; return 0; } void SDL2SoftwareGraphics::fillRectangle(const gcn::Rectangle &rectangle) { FUNC_BLOCK("Graphics::fillRectangle", 1) 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) { const int x1 = area.x > top.x ? area.x : top.x; const int y1 = area.y > top.y ? area.y : top.y; const int x2 = area.x + area.width < top.x + top.width ? area.x + area.width : top.x + top.width; const int y2 = area.y + area.height < top.y + top.height ? area.y + area.height : top.y + top.height; int x, y; SDL_LockSurface(mSurface); const int bpp = mSurface->format->BytesPerPixel; const uint32_t pixel = SDL_MapRGB(mSurface->format, static_cast<uint8_t>(mColor.r), static_cast<uint8_t>(mColor.g), static_cast<uint8_t>(mColor.b)); switch (bpp) { case 1: for (y = y1; y < y2; y++) { uint8_t *const p = static_cast<uint8_t *>(mSurface->pixels) + y * mSurface->pitch; for (x = x1; x < x2; x++) *(p + x) = static_cast<uint8_t>(pixel); } break; case 2: for (y = y1; y < y2; y++) { uint8_t *const p0 = static_cast<uint8_t *>( mSurface->pixels) + y * mSurface->pitch; for (x = x1; x < x2; x++) { uint8_t *const p = p0 + x * 2; *reinterpret_cast<uint16_t *>(p) = gcn::SDLAlpha16( static_cast<uint16_t>(pixel), *reinterpret_cast<uint16_t *>(p), static_cast<uint8_t>(mColor.a), mSurface->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_t *const p0 = static_cast<uint8_t *>( mSurface->pixels) + y * mSurface->pitch; for (x = x1; x < x2; x++) { uint8_t *const p = p0 + x * 3; #if SDL_BYTEORDER == SDL_BIG_ENDIAN p[2] = static_cast<uint8_t>((p[2] * ca + cb) >> 8); p[1] = static_cast<uint8_t>((p[1] * ca + cg) >> 8); p[0] = static_cast<uint8_t>((p[0] * ca + cr) >> 8); #else p[0] = static_cast<uint8_t>((p[0] * ca + cb) >> 8); p[1] = static_cast<uint8_t>((p[1] * ca + cg) >> 8); p[2] = static_cast<uint8_t>((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_t *const p0 = static_cast<uint8_t *>( mSurface->pixels) + y * mSurface->pitch; for (x = x1; x < x2; x++) { uint8_t *p = p0 + x * 4; uint32_t dst = *reinterpret_cast<uint32_t *>(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_t *>(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; } const SDL_PixelFormat * const format = mSurface->format; const unsigned rMask = format->Rmask; const unsigned gMask = format->Gmask; const unsigned bMask = format->Bmask; // const unsigned aMask = format->Amask; unsigned rShift = rMask / 0xff; unsigned gShift = gMask / 0xff; unsigned bShift = bMask / 0xff; if (!rShift) rShift = 1; if (!gShift) gShift = 1; if (!bShift) bShift = 1; if (pixel != mOldPixel || mColor.a != mOldAlpha) { const unsigned pb = (pixel & bMask) * mColor.a; const unsigned pg = (pixel & gMask) * mColor.a; const unsigned pr = (pixel & rMask) * mColor.a; const unsigned a0 = (255 - mColor.a); const unsigned int a1 = a0 * bShift; const unsigned int a2 = a0 * gShift; const unsigned int a3 = a0 * rShift; for (int f = 0; f <= 0xff; f ++) { cB[f] = ((pb + f * a1) >> 8) & bMask; cG[f] = ((pg + f * a2) >> 8) & gMask; cR[f] = ((pr + f * a3) >> 8) & rMask; } mOldPixel = pixel; mOldAlpha = mColor.a; } for (y = y1; y < y2; y++) { uint32_t *const p0 = reinterpret_cast<uint32_t*>( static_cast<uint8_t*>(mSurface->pixels) + y * mSurface->pitch); for (x = x1; x < x2; x++) { uint32_t *const p = p0 + x; const uint32_t dst = *p; *p = cB[dst & bMask / bShift] | cG[(dst & gMask) / gShift] | cR[(dst & rMask) / rShift]; } } #endif break; } default: break; } SDL_UnlockSurface(mSurface); } else { SDL_Rect rect = { static_cast<int16_t>(area.x), static_cast<int16_t>(area.y), static_cast<uint16_t>(area.width), static_cast<uint16_t>(area.height) }; const uint32_t color = SDL_MapRGBA(mSurface->format, static_cast<int8_t>(mColor.r), static_cast<int8_t>(mColor.g), static_cast<int8_t>(mColor.b), static_cast<int8_t>(mColor.a)); SDL_FillRect(mSurface, &rect, color); } } void SDL2SoftwareGraphics::_beginDraw() { pushClipArea(gcn::Rectangle(0, 0, mRect.w, mRect.h)); } void SDL2SoftwareGraphics::_endDraw() { popClipArea(); } bool SDL2SoftwareGraphics::pushClipArea(gcn::Rectangle area) { const bool result = gcn::Graphics::pushClipArea(area); const gcn::ClipRectangle &carea = mClipStack.top(); const SDL_Rect rect = { static_cast<int32_t>(carea.x), static_cast<int32_t>(carea.y), static_cast<int32_t>(carea.width), static_cast<int32_t>(carea.height) }; SDL_SetClipRect(mSurface, &rect); return result; } void SDL2SoftwareGraphics::popClipArea() { gcn::Graphics::popClipArea(); if (mClipStack.empty()) return; const gcn::ClipRectangle &carea = mClipStack.top(); const SDL_Rect rect = { static_cast<int32_t>(carea.x), static_cast<int32_t>(carea.y), static_cast<int32_t>(carea.width), static_cast<int32_t>(carea.height) }; SDL_SetClipRect(mSurface, &rect); } void SDL2SoftwareGraphics::drawPoint(int x, int y) { if (mClipStack.empty()) return; const gcn::ClipRectangle& top = mClipStack.top(); x += top.xOffset; y += top.yOffset; if (!top.isPointInRect(x, y)) return; if (mAlpha) SDLputPixelAlpha(mSurface, x, y, mColor); else SDLputPixel(mSurface, x, y, mColor); } void SDL2SoftwareGraphics::drawHLine(int x1, int y, int x2) { if (mClipStack.empty()) return; const gcn::ClipRectangle& top = mClipStack.top(); const int xOffset = top.xOffset; x1 += xOffset; y += top.yOffset; x2 += xOffset; const int topY = top.y; if (y < topY || y >= topY + top.height) return; if (x1 > x2) { x1 ^= x2; x2 ^= x1; x1 ^= x2; } const int topX = top.x; if (topX > x1) { if (topX > x2) return; x1 = topX; } const int sumX = topX + top.width; if (sumX <= x2) { if (sumX <= x1) return; x2 = sumX -1; } const int bpp = mSurface->format->BytesPerPixel; SDL_LockSurface(mSurface); uint8_t *p = static_cast<uint8_t*>(mSurface->pixels) + y * mSurface->pitch + x1 * bpp; const uint32_t pixel = SDL_MapRGB(mSurface->format, static_cast<uint8_t>(mColor.r), static_cast<uint8_t>(mColor.g), static_cast<uint8_t>(mColor.b)); switch (bpp) { case 1: for (; x1 <= x2; ++x1) *(p++) = static_cast<uint8_t>(pixel); break; case 2: { uint16_t* q = reinterpret_cast<uint16_t*>(p); for (; x1 <= x2; ++x1) *(q++) = pixel; break; } case 3: { const uint8_t b0 = static_cast<uint8_t>((pixel >> 16) & 0xff); const uint8_t b1 = static_cast<uint8_t>((pixel >> 8) & 0xff); const uint8_t b2 = static_cast<uint8_t>(pixel & 0xff); #if SDL_BYTEORDER == SDL_BIG_ENDIAN for (; x1 <= x2; ++x1) { p[0] = b0; p[1] = b1; p[2] = b2; p += 3; } #else for (; x1 <= x2; ++x1) { p[0] = b2; p[1] = b1; p[2] = b0; p += 3; } #endif break; } case 4: { uint32_t *q = reinterpret_cast<uint32_t*>(p); if (mAlpha) { unsigned char a = static_cast<unsigned char>(mColor.a); unsigned char a1 = 255 - a; const int b0 = (pixel & 0xff) * a; const int g0 = (pixel & 0xff00) * a; const int r0 = (pixel & 0xff0000) * a; for (; x1 <= x2; ++x1) { const unsigned int b = (b0 + (*q & 0xff) * a1) >> 8; const unsigned int g = (g0 + (*q & 0xff00) * a1) >> 8; const unsigned int r = (r0 + (*q & 0xff0000) * a1) >> 8; *q = (b & 0xff) | (g & 0xff00) | (r & 0xff0000); q++; } } else { for (; x1 <= x2; ++x1) *(q++) = pixel; } break; } default: break; } // end switch SDL_UnlockSurface(mSurface); } void SDL2SoftwareGraphics::drawVLine(int x, int y1, int y2) { if (mClipStack.empty()) return; const gcn::ClipRectangle& top = mClipStack.top(); const int yOffset = top.yOffset; x += top.xOffset; y1 += yOffset; y2 += yOffset; if (x < top.x || x >= top.x + top.width) return; if (y1 > y2) { y1 ^= y2; y2 ^= y1; y1 ^= y2; } if (top.y > y1) { if (top.y > y2) return; y1 = top.y; } const int sumY = top.y + top.height; if (sumY <= y2) { if (sumY <= y1) return; y2 = sumY - 1; } const int bpp = mSurface->format->BytesPerPixel; SDL_LockSurface(mSurface); uint8_t *p = static_cast<uint8_t*>(mSurface->pixels) + y1 * mSurface->pitch + x * bpp; const uint32_t pixel = SDL_MapRGB(mSurface->format, static_cast<uint8_t>(mColor.r), static_cast<uint8_t>(mColor.g), static_cast<uint8_t>(mColor.b)); const int pitch = mSurface->pitch; switch (bpp) { case 1: for (; y1 <= y2; ++y1) { *p = static_cast<uint8_t>(pixel); p += pitch; } break; case 2: for (; y1 <= y2; ++ y1) { *reinterpret_cast<uint16_t*>(p) = static_cast<uint16_t>(pixel); p += pitch; } break; case 3: { const uint8_t b0 = static_cast<uint8_t>((pixel >> 16) & 0xff); const uint8_t b1 = static_cast<uint8_t>((pixel >> 8) & 0xff); const uint8_t b2 = static_cast<uint8_t>(pixel & 0xff); #if SDL_BYTEORDER == SDL_BIG_ENDIAN for (; y1 <= y2; ++y1) { p[0] = b0; p[1] = b1; p[2] = b2; p += pitch; } #else for (; y1 <= y2; ++y1) { p[0] = b2; p[1] = b1; p[2] = b0; p += pitch; } #endif break; } case 4: { if (mAlpha) { unsigned char a = static_cast<unsigned char>(mColor.a); unsigned char a1 = 255 - a; const int b0 = (pixel & 0xff) * a; const int g0 = (pixel & 0xff00) * a; const int r0 = (pixel & 0xff0000) * a; for (; y1 <= y2; ++y1) { const unsigned int dst = *reinterpret_cast<uint32_t*>(p); const unsigned int b = (b0 + (dst & 0xff) * a1) >> 8; const unsigned int g = (g0 + (dst & 0xff00) * a1) >> 8; const unsigned int r = (r0 + (dst & 0xff0000) * a1) >> 8; *reinterpret_cast<uint32_t*>(p) = (b & 0xff) | (g & 0xff00) | (r & 0xff0000); p += pitch; } } else { for (; y1 <= y2; ++y1) { *reinterpret_cast<uint32_t*>(p) = pixel; p += pitch; } } break; } default: break; } // end switch SDL_UnlockSurface(mSurface); } void SDL2SoftwareGraphics::drawRectangle(const gcn::Rectangle &rectangle) { const int x1 = rectangle.x; const int x2 = x1 + rectangle.width - 1; const int y1 = rectangle.y; const int y2 = y1 + rectangle.height - 1; drawHLine(x1, y1, x2); drawHLine(x1, y2, x2); drawVLine(x1, y1, y2); drawVLine(x2, y1, y2); } void SDL2SoftwareGraphics::drawLine(int x1, int y1, int x2, int y2) { if (x1 == x2) { drawVLine(x1, y1, y2); return; } if (y1 == y2) { drawHLine(x1, y1, x2); return; } } bool SDL2SoftwareGraphics::setVideoMode(const int w, const int h, const int bpp, const bool fs, const bool hwaccel, const bool resize, const bool noFrame) { setMainFlags(w, h, bpp, fs, hwaccel, resize, noFrame); if (!(mWindow = graphicsManager.createWindow(w, h, bpp, getSoftwareFlags()))) { mRect.w = 0; mRect.h = 0; mSurface = nullptr; return false; } mSurface = SDL_GetWindowSurface(mWindow); imageHelper->dumpSurfaceFormat(mSurface); SDL2SoftwareImageHelper::setFormat(mSurface->format); int w1 = 0; int h1 = 0; SDL_GetWindowSize(mWindow, &w1, &h1); mRect.w = w1; mRect.h = h1; mRenderer = graphicsManager.createRenderer(mWindow, mRendererFlags); return videoInfo(); } bool SDL2SoftwareGraphics::resizeScreen(const int width, const int height) { const bool ret = Graphics::resizeScreen(width, height); mSurface = SDL_GetWindowSurface(mWindow); SDL2SoftwareImageHelper::setFormat(mSurface->format); return ret; } #endif // USE_SDL2