32bpp_anim.cpp

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00001 /* $Id: 32bpp_anim.cpp 26544 2014-04-29 18:41:19Z frosch $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD 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, version 2.
00006  * OpenTTD 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.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "../stdafx.h"
00013 #include "../video/video_driver.hpp"
00014 #include "32bpp_anim.hpp"
00015 
00016 #include "../table/sprites.h"
00017 
00019 static FBlitter_32bppAnim iFBlitter_32bppAnim;
00020 
00021 template <BlitterMode mode>
00022 inline void Blitter_32bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
00023 {
00024   const SpriteData *src = (const SpriteData *)bp->sprite;
00025 
00026   const Colour *src_px = (const Colour *)(src->data + src->offset[zoom][0]);
00027   const uint16 *src_n  = (const uint16 *)(src->data + src->offset[zoom][1]);
00028 
00029   for (uint i = bp->skip_top; i != 0; i--) {
00030     src_px = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
00031     src_n  = (const uint16 *)((const byte *)src_n  + *(const uint32 *)src_n);
00032   }
00033 
00034   Colour *dst = (Colour *)bp->dst + bp->top * bp->pitch + bp->left;
00035   uint16 *anim = this->anim_buf + ((uint32 *)bp->dst - (uint32 *)_screen.dst_ptr) + bp->top * this->anim_buf_width + bp->left;
00036 
00037   const byte *remap = bp->remap; // store so we don't have to access it via bp everytime
00038 
00039   for (int y = 0; y < bp->height; y++) {
00040     Colour *dst_ln = dst + bp->pitch;
00041     uint16 *anim_ln = anim + this->anim_buf_width;
00042 
00043     const Colour *src_px_ln = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
00044     src_px++;
00045 
00046     const uint16 *src_n_ln = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
00047     src_n += 2;
00048 
00049     Colour *dst_end = dst + bp->skip_left;
00050 
00051     uint n;
00052 
00053     while (dst < dst_end) {
00054       n = *src_n++;
00055 
00056       if (src_px->a == 0) {
00057         dst += n;
00058         src_px ++;
00059         src_n++;
00060 
00061         if (dst > dst_end) anim += dst - dst_end;
00062       } else {
00063         if (dst + n > dst_end) {
00064           uint d = dst_end - dst;
00065           src_px += d;
00066           src_n += d;
00067 
00068           dst = dst_end - bp->skip_left;
00069           dst_end = dst + bp->width;
00070 
00071           n = min<uint>(n - d, (uint)bp->width);
00072           goto draw;
00073         }
00074         dst += n;
00075         src_px += n;
00076         src_n += n;
00077       }
00078     }
00079 
00080     dst -= bp->skip_left;
00081     dst_end -= bp->skip_left;
00082 
00083     dst_end += bp->width;
00084 
00085     while (dst < dst_end) {
00086       n = min<uint>(*src_n++, (uint)(dst_end - dst));
00087 
00088       if (src_px->a == 0) {
00089         anim += n;
00090         dst += n;
00091         src_px++;
00092         src_n++;
00093         continue;
00094       }
00095 
00096       draw:;
00097 
00098       switch (mode) {
00099         case BM_COLOUR_REMAP:
00100           if (src_px->a == 255) {
00101             do {
00102               uint m = *src_n;
00103               /* In case the m-channel is zero, do not remap this pixel in any way */
00104               if (m == 0) {
00105                 *dst = src_px->data;
00106                 *anim = 0;
00107               } else {
00108                 uint r = remap[GB(m, 0, 8)];
00109                 *anim = r | (m & 0xFF00);
00110                 if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
00111               }
00112               anim++;
00113               dst++;
00114               src_px++;
00115               src_n++;
00116             } while (--n != 0);
00117           } else {
00118             do {
00119               uint m = *src_n;
00120               if (m == 0) {
00121                 *dst = ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, *dst);
00122                 *anim = 0;
00123               } else {
00124                 uint r = remap[GB(m, 0, 8)];
00125                 *anim = 0;
00126                 if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
00127               }
00128               anim++;
00129               dst++;
00130               src_px++;
00131               src_n++;
00132             } while (--n != 0);
00133           }
00134           break;
00135 
00136         case BM_CRASH_REMAP:
00137           if (src_px->a == 255) {
00138             do {
00139               uint m = *src_n;
00140               if (m == 0) {
00141                 uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
00142                 *dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
00143                 *anim = 0;
00144               } else {
00145                 uint r = remap[GB(m, 0, 8)];
00146                 *anim = r | (m & 0xFF00);
00147                 if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
00148               }
00149               anim++;
00150               dst++;
00151               src_px++;
00152               src_n++;
00153             } while (--n != 0);
00154           } else {
00155             do {
00156               uint m = *src_n;
00157               if (m == 0) {
00158                 if (src_px->a != 0) {
00159                   uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
00160                   *dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
00161                   *anim = 0;
00162                 }
00163               } else {
00164                 uint r = remap[GB(m, 0, 8)];
00165                 *anim = 0;
00166                 if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
00167               }
00168               anim++;
00169               dst++;
00170               src_px++;
00171               src_n++;
00172             } while (--n != 0);
00173           }
00174           break;
00175 
00176         case BM_TRANSPARENT:
00177           /* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
00178            *  This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
00179            *  we produce a result the newgrf maker didn't expect ;) */
00180 
00181           /* Make the current colour a bit more black, so it looks like this image is transparent */
00182           src_n += n;
00183           if (src_px->a == 255) {
00184             src_px += n;
00185             do {
00186               *dst = MakeTransparent(*dst, 3, 4);
00187               *anim = 0;
00188               anim++;
00189               dst++;
00190             } while (--n != 0);
00191           } else {
00192             do {
00193               *dst = MakeTransparent(*dst, (256 * 4 - src_px->a), 256 * 4);
00194               *anim = 0;
00195               anim++;
00196               dst++;
00197               src_px++;
00198             } while (--n != 0);
00199           }
00200           break;
00201 
00202         default:
00203           if (src_px->a == 255) {
00204             do {
00205               /* Compiler assumes pointer aliasing, can't optimise this on its own */
00206               uint m = GB(*src_n, 0, 8);
00207               /* Above PALETTE_ANIM_START is palette animation */
00208               *anim++ = *src_n;
00209               *dst++ = (m >= PALETTE_ANIM_START) ? this->AdjustBrightness(this->LookupColourInPalette(m), GB(*src_n, 8, 8)) : src_px->data;
00210               src_px++;
00211               src_n++;
00212             } while (--n != 0);
00213           } else {
00214             do {
00215               uint m = GB(*src_n, 0, 8);
00216               *anim++ = 0;
00217               if (m >= PALETTE_ANIM_START) {
00218                 *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(m), GB(*src_n, 8, 8)), src_px->a, *dst);
00219               } else {
00220                 *dst = ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, *dst);
00221               }
00222               dst++;
00223               src_px++;
00224               src_n++;
00225             } while (--n != 0);
00226           }
00227           break;
00228       }
00229     }
00230 
00231     anim = anim_ln;
00232     dst = dst_ln;
00233     src_px = src_px_ln;
00234     src_n  = src_n_ln;
00235   }
00236 }
00237 
00238 void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
00239 {
00240   if (_screen_disable_anim) {
00241     /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent Draw() */
00242     Blitter_32bppOptimized::Draw(bp, mode, zoom);
00243     return;
00244   }
00245 
00246   switch (mode) {
00247     default: NOT_REACHED();
00248     case BM_NORMAL:       Draw<BM_NORMAL>      (bp, zoom); return;
00249     case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
00250     case BM_TRANSPARENT:  Draw<BM_TRANSPARENT> (bp, zoom); return;
00251     case BM_CRASH_REMAP:  Draw<BM_CRASH_REMAP> (bp, zoom); return;
00252   }
00253 }
00254 
00255 void Blitter_32bppAnim::DrawColourMappingRect(void *dst, int width, int height, PaletteID pal)
00256 {
00257   if (_screen_disable_anim) {
00258     /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawColourMappingRect() */
00259     Blitter_32bppOptimized::DrawColourMappingRect(dst, width, height, pal);
00260     return;
00261   }
00262 
00263   Colour *udst = (Colour *)dst;
00264   uint16 *anim;
00265 
00266   anim = this->anim_buf + ((uint32 *)dst - (uint32 *)_screen.dst_ptr);
00267 
00268   if (pal == PALETTE_TO_TRANSPARENT) {
00269     do {
00270       for (int i = 0; i != width; i++) {
00271         *udst = MakeTransparent(*udst, 154);
00272         *anim = 0;
00273         udst++;
00274         anim++;
00275       }
00276       udst = udst - width + _screen.pitch;
00277       anim = anim - width + this->anim_buf_width;
00278     } while (--height);
00279     return;
00280   }
00281   if (pal == PALETTE_NEWSPAPER) {
00282     do {
00283       for (int i = 0; i != width; i++) {
00284         *udst = MakeGrey(*udst);
00285         *anim = 0;
00286         udst++;
00287         anim++;
00288       }
00289       udst = udst - width + _screen.pitch;
00290       anim = anim - width + this->anim_buf_width;
00291     } while (--height);
00292     return;
00293   }
00294 
00295   DEBUG(misc, 0, "32bpp blitter doesn't know how to draw this colour table ('%d')", pal);
00296 }
00297 
00298 void Blitter_32bppAnim::SetPixel(void *video, int x, int y, uint8 colour)
00299 {
00300   *((Colour *)video + x + y * _screen.pitch) = LookupColourInPalette(colour);
00301 
00302   /* Set the colour in the anim-buffer too, if we are rendering to the screen */
00303   if (_screen_disable_anim) return;
00304   this->anim_buf[((uint32 *)video - (uint32 *)_screen.dst_ptr) + x + y * this->anim_buf_width] = colour | (DEFAULT_BRIGHTNESS << 8);
00305 }
00306 
00307 void Blitter_32bppAnim::DrawRect(void *video, int width, int height, uint8 colour)
00308 {
00309   if (_screen_disable_anim) {
00310     /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawRect() */
00311     Blitter_32bppOptimized::DrawRect(video, width, height, colour);
00312     return;
00313   }
00314 
00315   Colour colour32 = LookupColourInPalette(colour);
00316   uint16 *anim_line;
00317 
00318   anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
00319 
00320   do {
00321     Colour *dst = (Colour *)video;
00322     uint16 *anim = anim_line;
00323 
00324     for (int i = width; i > 0; i--) {
00325       *dst = colour32;
00326       /* Set the colour in the anim-buffer too */
00327       *anim = colour | (DEFAULT_BRIGHTNESS << 8);
00328       dst++;
00329       anim++;
00330     }
00331     video = (uint32 *)video + _screen.pitch;
00332     anim_line += this->anim_buf_width;
00333   } while (--height);
00334 }
00335 
00336 void Blitter_32bppAnim::CopyFromBuffer(void *video, const void *src, int width, int height)
00337 {
00338   assert(!_screen_disable_anim);
00339   assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
00340   Colour *dst = (Colour *)video;
00341   const uint32 *usrc = (const uint32 *)src;
00342   uint16 *anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
00343 
00344   for (; height > 0; height--) {
00345     /* We need to keep those for palette animation. */
00346     Colour *dst_pal = dst;
00347     uint16 *anim_pal = anim_line;
00348 
00349     memcpy(dst, usrc, width * sizeof(uint32));
00350     usrc += width;
00351     dst += _screen.pitch;
00352     /* Copy back the anim-buffer */
00353     memcpy(anim_line, usrc, width * sizeof(uint16));
00354     usrc = (const uint32 *)((const uint16 *)usrc + width);
00355     anim_line += this->anim_buf_width;
00356 
00357     /* Okay, it is *very* likely that the image we stored is using
00358      * the wrong palette animated colours. There are two things we
00359      * can do to fix this. The first is simply reviewing the whole
00360      * screen after we copied the buffer, i.e. run PaletteAnimate,
00361      * however that forces a full screen redraw which is expensive
00362      * for just the cursor. This just copies the implementation of
00363      * palette animation, much cheaper though slightly nastier. */
00364     for (int i = 0; i < width; i++) {
00365       uint colour = GB(*anim_pal, 0, 8);
00366       if (colour >= PALETTE_ANIM_START) {
00367         /* Update this pixel */
00368         *dst_pal = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim_pal, 8, 8));
00369       }
00370       dst_pal++;
00371       anim_pal++;
00372     }
00373   }
00374 }
00375 
00376 void Blitter_32bppAnim::CopyToBuffer(const void *video, void *dst, int width, int height)
00377 {
00378   assert(!_screen_disable_anim);
00379   assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
00380   uint32 *udst = (uint32 *)dst;
00381   const uint32 *src = (const uint32 *)video;
00382   const uint16 *anim_line;
00383 
00384   if (this->anim_buf == NULL) return;
00385 
00386   anim_line = ((const uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
00387 
00388   for (; height > 0; height--) {
00389     memcpy(udst, src, width * sizeof(uint32));
00390     src += _screen.pitch;
00391     udst += width;
00392     /* Copy the anim-buffer */
00393     memcpy(udst, anim_line, width * sizeof(uint16));
00394     udst = (uint32 *)((uint16 *)udst + width);
00395     anim_line += this->anim_buf_width;
00396   }
00397 }
00398 
00399 void Blitter_32bppAnim::ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y)
00400 {
00401   assert(!_screen_disable_anim);
00402   assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
00403   uint16 *dst, *src;
00404 
00405   /* We need to scroll the anim-buffer too */
00406   if (scroll_y > 0) {
00407     dst = this->anim_buf + left + (top + height - 1) * this->anim_buf_width;
00408     src = dst - scroll_y * this->anim_buf_width;
00409 
00410     /* Adjust left & width */
00411     if (scroll_x >= 0) {
00412       dst += scroll_x;
00413     } else {
00414       src -= scroll_x;
00415     }
00416 
00417     uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
00418     uint th = height - scroll_y;
00419     for (; th > 0; th--) {
00420       memcpy(dst, src, tw * sizeof(uint16));
00421       src -= this->anim_buf_width;
00422       dst -= this->anim_buf_width;
00423     }
00424   } else {
00425     /* Calculate pointers */
00426     dst = this->anim_buf + left + top * this->anim_buf_width;
00427     src = dst - scroll_y * this->anim_buf_width;
00428 
00429     /* Adjust left & width */
00430     if (scroll_x >= 0) {
00431       dst += scroll_x;
00432     } else {
00433       src -= scroll_x;
00434     }
00435 
00436     /* the y-displacement may be 0 therefore we have to use memmove,
00437      * because source and destination may overlap */
00438     uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
00439     uint th = height + scroll_y;
00440     for (; th > 0; th--) {
00441       memmove(dst, src, tw * sizeof(uint16));
00442       src += this->anim_buf_width;
00443       dst += this->anim_buf_width;
00444     }
00445   }
00446 
00447   Blitter_32bppBase::ScrollBuffer(video, left, top, width, height, scroll_x, scroll_y);
00448 }
00449 
00450 int Blitter_32bppAnim::BufferSize(int width, int height)
00451 {
00452   return width * height * (sizeof(uint32) + sizeof(uint16));
00453 }
00454 
00455 void Blitter_32bppAnim::PaletteAnimate(const Palette &palette)
00456 {
00457   assert(!_screen_disable_anim);
00458 
00459   this->palette = palette;
00460   /* If first_dirty is 0, it is for 8bpp indication to send the new
00461    *  palette. However, only the animation colours might possibly change.
00462    *  Especially when going between toyland and non-toyland. */
00463   assert(this->palette.first_dirty == PALETTE_ANIM_START || this->palette.first_dirty == 0);
00464 
00465   const uint16 *anim = this->anim_buf;
00466   Colour *dst = (Colour *)_screen.dst_ptr;
00467 
00468   /* Let's walk the anim buffer and try to find the pixels */
00469   for (int y = this->anim_buf_height; y != 0 ; y--) {
00470     for (int x = this->anim_buf_width; x != 0 ; x--) {
00471       uint colour = GB(*anim, 0, 8);
00472       if (colour >= PALETTE_ANIM_START) {
00473         /* Update this pixel */
00474         *dst = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim, 8, 8));
00475       }
00476       dst++;
00477       anim++;
00478     }
00479     dst += _screen.pitch - this->anim_buf_width;
00480   }
00481 
00482   /* Make sure the backend redraws the whole screen */
00483   VideoDriver::GetInstance()->MakeDirty(0, 0, _screen.width, _screen.height);
00484 }
00485 
00486 Blitter::PaletteAnimation Blitter_32bppAnim::UsePaletteAnimation()
00487 {
00488   return Blitter::PALETTE_ANIMATION_BLITTER;
00489 }
00490 
00491 void Blitter_32bppAnim::PostResize()
00492 {
00493   if (_screen.width != this->anim_buf_width || _screen.height != this->anim_buf_height) {
00494     /* The size of the screen changed; we can assume we can wipe all data from our buffer */
00495     free(this->anim_buf);
00496     this->anim_buf = CallocT<uint16>(_screen.width * _screen.height);
00497     this->anim_buf_width = _screen.width;
00498     this->anim_buf_height = _screen.height;
00499   }
00500 }