gui/sdl/sdl_ogl_glue.cpp

   1 //
   2 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Free Software
   3 //   Foundation, Inc
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19 #include "sdl_ogl_glue.h"
  20 #include "Renderer_ogl.h"
  21 #include "tu_opengl_includes.h"
  22 #include "SDL.h"
  23
  24 #include "log.h"
  25
  26 #define OVERSIZE 1.0f
  27
  28 using namespace std;
  29
  30
  31 namespace gnash
  32 {
  33
  34 SdlOglGlue::SdlOglGlue()
  35 #ifdef FIX_I810_LOD_BIAS
  36   : _tex_lod_bias(-1.2f)
  37 #endif
  38 {
  39 //    GNASH_REPORT_FUNCTION;
  40 }
  41
  42 SdlOglGlue::~SdlOglGlue()
  43 {
  44 //    GNASH_REPORT_FUNCTION;
  45
  46 }
  47
  48 bool SdlOglGlue::init(int /*argc*/, char ** /*argv*/ [])
  49 {
  50 //    GNASH_REPORT_FUNCTION;
  51 #ifdef FIX_I810_LOD_BIAS
  52     int c = getopt (argc, *argv, "m:");
  53     if (c == 'm') {
  54       _tex_lod_bias = (float) strtof(optarg, NULL);
  55     }
  56 #endif
  57
  58     return true;
  59 }
  60
  61
  62 Renderer*
  63 SdlOglGlue::createRenderHandler(int depth)
  64 {
  65 //    GNASH_REPORT_FUNCTION;
  66
  67     _bpp = depth;
  68
  69     Renderer* renderer = create_Renderer_ogl();
  70
  71 #ifdef FIX_I810_LOD_BIAS
  72     glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, _tex_lod_bias);
  73 #endif
  74
  75     return renderer;
  76 }
  77
  78 /// Not implemented, Fixme
  79 void
  80 SdlOglGlue::setInvalidatedRegions(const InvalidatedRanges& /*ranges*/)
  81 {
  82 }
  83
  84 bool
  85 SdlOglGlue::prepDrawingArea(int width, int height, boost::uint32_t sdl_flags)
  86 {
  87     if (_bpp == 16) {
  88       // 16-bit color, surface creation is likely to succeed.
  89       SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
  90       SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
  91       SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
  92       SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 15);
  93       SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
  94       SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1);
  95     } else {
  96       assert(_bpp == 32);
  97
  98       // 32-bit color etc, for getting dest alpha,
  99       // for MULTIPASS_ANTIALIASING (see
 100       // Renderer_ogl.cpp).
 101       SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
 102       SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
 103       SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
 104       SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
 105       SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
 106       SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 107       SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1);
 108     }
 109
 110     SDL_SetVideoMode(width, height, _bpp, sdl_flags | SDL_OPENGL);
 111
 112      // Turn on alpha blending.
 113     glEnable(GL_BLEND);
 114     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 115
 116     // Turn on line smoothing.  Antialiased lines can be used to
 117     // smooth the outsides of shapes.
 118     glEnable(GL_LINE_SMOOTH);
 119     glHint(GL_LINE_SMOOTH_HINT, GL_NICEST); // GL_NICEST, GL_FASTEST, GL_DONT_CARE
 120     glMatrixMode(GL_PROJECTION);
 121
 122
 123     glOrtho(-OVERSIZE, OVERSIZE, OVERSIZE, -OVERSIZE, -1, 1);
 124     glMatrixMode(GL_MODELVIEW);
 125     glLoadIdentity();
 126
 127     // We don't need lighting effects
 128     glDisable(GL_LIGHTING);
 129     glPushAttrib (GL_ALL_ATTRIB_BITS);
 130
 131 #  ifdef FIX_I810_LOD_BIAS
 132     glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, _tex_lod_bias);
 133 #  endif
 134
 135     return true;
 136 }
 137
 138 void
 139 SdlOglGlue::render()
 140 {
 141 //    GNASH_REPORT_FUNCTION;
 142     SDL_GL_SwapBuffers();
 143 }
 144
 145
 146
 147 } // namespace gnash