plugins/gpu_unai/gpu.h

   1 /***************************************************************************
   2 *   Copyright (C) 2010 PCSX4ALL Team                                      *
   3 *   Copyright (C) 2010 Unai                                               *
   4 *   Copyright (C) 2016 Senquack (dansilsby <AT> gmail <DOT> com)          *
   5 *                                                                         *
   6 *   This program is free software; you can redistribute it and/or modify  *
   7 *   it under the terms of the GNU General Public License as published by  *
   8 *   the Free Software Foundation; either version 2 of the License, or     *
   9 *   (at your option) any later version.                                   *
  10 *                                                                         *
  11 *   This program is distributed in the hope that it will be useful,       *
  12 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14 *   GNU General Public License for more details.                          *
  15 *                                                                         *
  16 *   You should have received a copy of the GNU General Public License     *
  17 *   along with this program; if not, write to the                         *
  18 *   Free Software Foundation, Inc.,                                       *
  19 *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
  20 ***************************************************************************/
  21
  22 #ifndef GPU_UNAI_GPU_H
  23 #define GPU_UNAI_GPU_H
  24
  25 struct gpu_unai_config_t {
  26         uint8_t pixel_skip:1;     // If 1, allows skipping rendering pixels that
  27                                   //  would not be visible when a high horizontal
  28                                   //  resolution PS1 video mode is set.
  29                                   //  Only applies to devices with low resolutions
  30                                   //  like 320x240. Should not be used if a
  31                                   //  down-scaling framebuffer blitter is in use.
  32                                   //  Can cause gfx artifacts if game reads VRAM
  33                                   //  to do framebuffer effects.
  34
  35         uint8_t ilace_force:3;    // Option to force skipping rendering of lines,
  36                                   //  for very slow platforms. Value will be
  37                                   //  assigned to 'ilace_mask' in gpu_unai struct.
  38                                   //  Normally 0. Value '1' will skip rendering
  39                                   //  odd lines.
  40
  41         uint8_t scale_hires:1;    // If 1, will scale hi-res output to
  42                                   //  320x240 when gpulib reads the frame.
  43                                   //  Implies pixel_skip and ilace_force
  44                                   //  (when height > 240).
  45         uint8_t lighting:1;
  46         uint8_t fast_lighting:1;
  47         uint8_t blending:1;
  48         uint8_t dithering:1;
  49
  50         //senquack Only PCSX Rearmed's version of gpu_unai had this, and I
  51         // don't think it's necessary. It would require adding 'AH' flag to
  52         // gpuSpriteSpanFn() increasing size of sprite span function array.
  53         //uint8_t enableAbbeyHack:1;  // Abe's Odyssey hack
  54
  55         ////////////////////////////////////////////////////////////////////////////
  56         // Variables used only by older standalone version of gpu_unai (gpu.cpp)
  57 #ifndef USE_GPULIB
  58         uint8_t prog_ilace:1;         // Progressive interlace option (old option)
  59                                       //  This option was somewhat oddly named:
  60                                       //  When in interlaced video mode, on a low-res
  61                                       //  320x240 device, only the even lines are
  62                                       //  rendered. This option will take that one
  63                                       //  step further and only render half the even
  64                                       //  even lines one frame, and then the other half.
  65         uint8_t frameskip_count:3;    // Frame skip (0..7)
  66 #endif
  67 };
  68
  69 extern gpu_unai_config_t gpu_unai_config_ext;
  70
  71 // TODO: clean up show_fps frontend option
  72 extern  bool show_fps;
  73
  74 #endif // GPU_UNAI_GPU_H