src/blitter/32bpp_sse2.hpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file 32bpp_sse2.hpp SSE2 32 bpp blitter. */
  11
  12 #ifndef BLITTER_32BPP_SSE2_HPP
  13 #define BLITTER_32BPP_SSE2_HPP
  14
  15 #ifdef WITH_SSE
  16
  17 #ifndef SSE_VERSION
  18 #define SSE_VERSION 2
  19 #endif
  20
  21 #ifndef FULL_ANIMATION
  22 #define FULL_ANIMATION 0
  23 #endif
  24
  25 #include "32bpp_sse_type.h"
  26
  27 /** Base methods for 32bpp SSE blitters. */
  28 class Blitter_32bppSSE_Base {
  29 public:
  30         virtual ~Blitter_32bppSSE_Base() {}
  31
  32         struct MapValue {
  33                 uint8 m;
  34                 uint8 v;
  35         };
  36         assert_compile(sizeof(MapValue) == 2);
  37
  38         /** Helper for creating specialised functions for specific optimisations. */
  39         enum ReadMode {
  40                 RM_WITH_SKIP,   ///< Use normal code for skipping empty pixels.
  41                 RM_WITH_MARGIN, ///< Use cached number of empty pixels at begin and end of line to reduce work.
  42                 RM_NONE,        ///< No specialisation.
  43         };
  44
  45         /** Helper for creating specialised functions for the case where the sprite width is odd or even. */
  46         enum BlockType {
  47                 BT_EVEN, ///< An even number of pixels in the width; no need for a special case for the last pixel.
  48                 BT_ODD,  ///< An odd number of pixels in the width; special case for the last pixel.
  49                 BT_NONE, ///< No specialisation for either case.
  50         };
  51
  52         /** Helper for using specialised functions designed to prevent whenever it's possible things like:
  53          *  - IO (reading video buffer),
  54          *  - calculations (alpha blending),
  55          *  - heavy branching (remap lookups and animation buffer handling).
  56          */
  57         enum SpriteFlags {
  58                 SF_NONE        = 0,
  59                 SF_TRANSLUCENT = 1 << 1, ///< The sprite has at least 1 translucent pixel.
  60                 SF_NO_REMAP    = 1 << 2, ///< The sprite has no remappable colour pixel.
  61                 SF_NO_ANIM     = 1 << 3, ///< The sprite has no palette animated pixel.
  62         };
  63
  64         /** Data stored about a (single) sprite. */
  65         struct SpriteInfo {
  66                 uint32 sprite_offset;    ///< The offset to the sprite data.
  67                 uint32 mv_offset;        ///< The offset to the map value data.
  68                 uint16 sprite_line_size; ///< The size of a single line (pitch).
  69                 uint16 sprite_width;     ///< The width of the sprite.
  70         };
  71         struct SpriteData {
  72                 SpriteFlags flags;
  73                 SpriteInfo infos[ZOOM_LVL_COUNT];
  74                 byte data[]; ///< Data, all zoomlevels.
  75         };
  76
  77         Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator);
  78 };
  79
  80 DECLARE_ENUM_AS_BIT_SET(Blitter_32bppSSE_Base::SpriteFlags);
  81
  82 /** The SSE2 32 bpp blitter (without palette animation). */
  83 class Blitter_32bppSSE2 : public Blitter_32bppSimple, public Blitter_32bppSSE_Base {
  84 public:
  85         /* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom);
  86         template <BlitterMode mode, Blitter_32bppSSE_Base::ReadMode read_mode, Blitter_32bppSSE_Base::BlockType bt_last, bool translucent>
  87         void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
  88
  89         /* virtual */ Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator) {
  90                 return Blitter_32bppSSE_Base::Encode(sprite, allocator);
  91         }
  92
  93         /* virtual */ const char *GetName() { return "32bpp-sse2"; }
  94 };
  95
  96 /** Factory for the SSE2 32 bpp blitter (without palette animation). */
  97 class FBlitter_32bppSSE2 : public BlitterFactory {
  98 public:
  99         FBlitter_32bppSSE2() : BlitterFactory("32bpp-sse2", "32bpp SSE2 Blitter (no palette animation)", HasCPUIDFlag(1, 3, 26)) {}
 100         /* virtual */ Blitter *CreateInstance() { return new Blitter_32bppSSE2(); }
 101 };
 102
 103 #endif /* WITH_SSE */
 104 #endif /* BLITTER_32BPP_SSE2_HPP */