git.sesse.net Git - casparcg/blob - accelerator/ogl/image/image_shader.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../../stdafx.h"\r
  23 \r
  24 #include "image_shader.h"\r
  25 \r
  26 #include "../util/shader.h"\r
  27 #include "../util/context.h"\r
  28 \r
  29 #include "blending_glsl.h"\r
  30 \r
  31 #include <common/gl/gl_check.h>\r
  32 #include <common/env.h>\r
  33 \r
  34 #include <tbb/mutex.h>\r
  35 \r
  36 namespace caspar { namespace accelerator { namespace ogl {\r
  37 \r
  38 std::shared_ptr<shader> g_shader;\r
  39 tbb::mutex                              g_shader_mutex;\r
  40 bool                                    g_blend_modes = false;\r
  41 \r
  42 std::string get_blend_color_func()\r
  43 {\r
  44         return \r
  45                         \r
  46         get_adjustement_glsl()\r
  47                 \r
  48         +\r
  49 \r
  50         get_blend_glsl()\r
  51                 \r
  52         +\r
  53                         \r
  54         "vec3 get_blend_color(vec3 back, vec3 fore)                                                                                     \n"\r
  55         "{                                                                                                                                                                      \n"\r
  56         "       switch(blend_mode)                                                                                                                              \n"\r
  57         "       {                                                                                                                                                               \n"\r
  58         "       case  0: return BlendNormal(back, fore);                                                                                \n"\r
  59         "       case  1: return BlendLighten(back, fore);                                                                               \n"\r
  60         "       case  2: return BlendDarken(back, fore);                                                                                \n"\r
  61         "       case  3: return BlendMultiply(back, fore);                                                                              \n"\r
  62         "       case  4: return BlendAverage(back, fore);                                                                               \n"\r
  63         "       case  5: return BlendAdd(back, fore);                                                                                   \n"\r
  64         "       case  6: return BlendSubstract(back, fore);                                                                             \n"\r
  65         "       case  7: return BlendDifference(back, fore);                                                                    \n"\r
  66         "       case  8: return BlendNegation(back, fore);                                                                              \n"\r
  67         "       case  9: return BlendExclusion(back, fore);                                                                             \n"\r
  68         "       case 10: return BlendScreen(back, fore);                                                                                \n"\r
  69         "       case 11: return BlendOverlay(back, fore);                                                                               \n"\r
  70         //"     case 12: return BlendSoftLight(back, fore);                                                                             \n"\r
  71         "       case 13: return BlendHardLight(back, fore);                                                                             \n"\r
  72         "       case 14: return BlendColorDodge(back, fore);                                                                    \n"\r
  73         "       case 15: return BlendColorBurn(back, fore);                                                                             \n"\r
  74         "       case 16: return BlendLinearDodge(back, fore);                                                                   \n"\r
  75         "       case 17: return BlendLinearBurn(back, fore);                                                                    \n"\r
  76         "       case 18: return BlendLinearLight(back, fore);                                                                   \n"\r
  77         "       case 19: return BlendVividLight(back, fore);                                                                    \n"\r
  78         "       case 20: return BlendPinLight(back, fore);                                                                              \n"\r
  79         "       case 21: return BlendHardMix(back, fore);                                                                               \n"\r
  80         "       case 22: return BlendReflect(back, fore);                                                                               \n"\r
  81         "       case 23: return BlendGlow(back, fore);                                                                                  \n"\r
  82         "       case 24: return BlendPhoenix(back, fore);                                                                               \n"\r
  83         "       case 25: return BlendHue(back, fore);                                                                                   \n"\r
  84         "       case 26: return BlendSaturation(back, fore);                                                                    \n"\r
  85         "       case 27: return BlendColor(back, fore);                                                                                 \n"\r
  86         "       case 28: return BlendLuminosity(back, fore);                                                                    \n"\r
  87         "       }                                                                                                                                                               \n"\r
  88         "       return BlendNormal(back, fore);                                                                                                 \n"\r
  89         "}                                                                                                                                                                      \n"\r
  90         "                                                                                                                                                                       \n"                                                                                                                                                       \r
  91         "vec4 blend(vec4 fore)                                                                                                                          \n"\r
  92         "{                                                                                                                                                                      \n"\r
  93         "   vec4 back = texture2D(background, gl_TexCoord[1].st).bgra;                                          \n"\r
  94         "   if(blend_mode != 0)                                                                                                                         \n"\r
  95         "               fore.rgb = get_blend_color(back.rgb/(back.a+0.0000001), fore.rgb/(fore.a+0.0000001))*fore.a;\n"\r
  96         "       switch(keyer)                                                                                                                                   \n"     \r
  97         "       {                                                                                                                                                               \n"     \r
  98         "               case 1:  return fore + back; // additive                                                                        \n"\r
  99         "               default: return fore + (1.0-fore.a)*back; // linear                                                     \n"\r
 100         "       }                                                                                                                                                               \n"\r
 101         "}                                                                                                                                                                      \n";                    \r
 102 }\r
 103                 \r
 104 std::string get_simple_blend_color_func()\r
 105 {\r
 106         return  \r
 107                 \r
 108         get_adjustement_glsl()\r
 109                         \r
 110         +\r
 111 \r
 112         "vec4 blend(vec4 fore)                                                                                                                          \n"\r
 113         "{                                                                                                                                                                      \n"\r
 114         "       return fore;                                                                                                                                    \n"\r
 115         "}                                                                                                                                                                      \n";\r
 116 }\r
 117 \r
 118 std::string get_vertex()\r
 119 {\r
 120         return \r
 121 \r
 122         "void main()                                                                                                                                            \n"\r
 123         "{                                                                                                                                                                      \n"\r
 124         "       gl_TexCoord[0] = gl_MultiTexCoord0;                                                                                             \n"\r
 125         "       gl_TexCoord[1] = gl_MultiTexCoord1;                                                                                             \n"\r
 126         "       gl_Position    = ftransform();                                                                                                  \n"\r
 127         "}                                                                                                                                                                      \n";\r
 128 }\r
 129 \r
 130 std::string get_fragment(bool blend_modes)\r
 131 {\r
 132         return\r
 133 \r
 134         "#version 130                                                                                                                                           \n"\r
 135         "uniform sampler2D      background;                                                                                                             \n"\r
 136         "uniform sampler2D      plane[4];                                                                                                               \n"\r
 137         "uniform sampler2D      local_key;                                                                                                              \n"\r
 138         "uniform sampler2D      layer_key;                                                                                                              \n"\r
 139         "                                                                                                                                                                       \n"\r
 140         "uniform bool           is_hd;                                                                                                                  \n"\r
 141         "uniform bool           has_local_key;                                                                                                  \n"\r
 142         "uniform bool           has_layer_key;                                                                                                  \n"\r
 143         "uniform int            blend_mode;                                                                                                             \n"\r
 144         "uniform int            keyer;                                                                                                                  \n"\r
 145         "uniform int            pixel_format;                                                                                                   \n"\r
 146         "                                                                                                                                                                       \n"\r
 147         "uniform float          opacity;                                                                                                                \n"\r
 148         "uniform bool           levels;                                                                                                                 \n"\r
 149         "uniform float          min_input;                                                                                                              \n"\r
 150         "uniform float          max_input;                                                                                                              \n"\r
 151         "uniform float          gamma;                                                                                                                  \n"\r
 152         "uniform float          min_output;                                                                                                             \n"\r
 153         "uniform float          max_output;                                                                                                             \n"\r
 154         "                                                                                                                                                                       \n"\r
 155         "uniform bool           csb;                                                                                                                    \n"\r
 156         "uniform float          brt;                                                                                                                    \n"\r
 157         "uniform float          sat;                                                                                                                    \n"\r
 158         "uniform float          con;                                                                                                                    \n"\r
 159         "                                                                                                                                                                       \n"     \r
 160 \r
 161         +\r
 162                 \r
 163         (blend_modes ? get_blend_color_func() : get_simple_blend_color_func())\r
 164 \r
 165         +\r
 166         \r
 167         "                                                                                                                                                                       \n"\r
 168         "//http://slouken.blogspot.com/2011/02/mpeg-acceleration-with-glsl.html                         \n"\r
 169         "vec4 ycbcra_to_rgba_sd(float y, float cb, float cr, float a)                                           \n"\r
 170         "{                                                                                                                                                                      \n"\r
 171         "       // YUV offset                                                                                                                                   \n"\r
 172         "       const vec3 offset = vec3(-0.0625, -0.5, -0.5);                                                                  \n"\r
 173         "                                                                                                                                                                       \n"\r
 174         "       // RGB coefficients                                                                                                                     \n"\r
 175         "       const vec3 Rcoeff = vec3(1.164,  0.000,  1.596);                                                                \n"\r
 176         "       const vec3 Gcoeff = vec3(1.164, -0.391, -0.813);                                                                \n"\r
 177         "       const vec3 Bcoeff = vec3(1.164,  2.018,  0.000);                                                                \n"\r
 178         "                                                                                                                                                                       \n"\r
 179         "       vec3 yuv = vec3(y, cr, cb);                                                                                                             \n"\r
 180         "   vec4 rgba;                                                                                                                                          \n"\r
 181         "                                                                                                                                                                       \n"\r
 182         "       yuv += offset;                                                                                                                                  \n"\r
 183         "       rgba.r = dot(yuv, Rcoeff);                                                                                                              \n"\r
 184         "       rgba.g = dot(yuv, Gcoeff);                                                                                                              \n"\r
 185         "       rgba.b = dot(yuv, Bcoeff);                                                                                                              \n"\r
 186         "       rgba.a = a;                                                                                                                                             \n"\r
 187         "                                                                                                                                                                       \n"\r
 188         "       return rgba;                                                                                                                                    \n"\r
 189         "}                                                                                                                                                                      \n"                     \r
 190         "                                                                                                                                                                       \n"\r
 191         "vec4 ycbcra_to_rgba_hd(float y, float cb, float cr, float a)                                           \n"\r
 192         "{                                                                                                                                                                      \n"\r
 193         "       // YUV offset                                                                                                                                   \n"\r
 194         "       const vec3 offset = vec3(-0.0625, -0.5, -0.5);                                                                  \n"\r
 195         "                                                                                                                                                                       \n"\r
 196         "       // RGB coefficients                                                                                                                     \n"\r
 197         "       const vec3 Rcoeff = vec3(1.164,  0.000,  1.793);                                                                \n"\r
 198         "       const vec3 Gcoeff = vec3(1.164, -0.213, -0.534);                                                                \n"\r
 199         "       const vec3 Bcoeff = vec3(1.164,  2.115,  0.000);                                                                \n"\r
 200         "                                                                                                                                                                       \n"\r
 201         "       vec3 yuv = vec3(y, cr, cb);                                                                                                             \n"\r
 202         "   vec4 rgba;                                                                                                                                          \n"\r
 203         "                                                                                                                                                                       \n"\r
 204         "       yuv += offset;                                                                                                                                  \n"\r
 205         "       rgba.r = dot(yuv, Rcoeff);                                                                                                              \n"\r
 206         "       rgba.g = dot(yuv, Gcoeff);                                                                                                              \n"\r
 207         "       rgba.b = dot(yuv, Bcoeff);                                                                                                              \n"\r
 208         "       rgba.a = a;                                                                                                                                             \n"\r
 209         "                                                                                                                                                                       \n"\r
 210         "       return rgba;                                                                                                                                    \n"\r
 211         "}                                                                                                                                                                      \n"                     \r
 212         "                                                                                                                                                                       \n"             \r
 213         "vec4 ycbcra_to_rgba(float y, float cb, float cr, float a)                                                      \n"\r
 214         "{                                                                                                                                                                      \n"\r
 215         "       if(is_hd)                                                                                                                                               \n"\r
 216         "               return ycbcra_to_rgba_hd(y, cb, cr, a);                                                                         \n"\r
 217         "       else                                                                                                                                                    \n"\r
 218         "               return ycbcra_to_rgba_sd(y, cb, cr, a);                                                                         \n"\r
 219         "}                                                                                                                                                                      \n"\r
 220         "                                                                                                                                                                       \n"\r
 221         "vec4 get_rgba_color()                                                                                                                          \n"\r
 222         "{                                                                                                                                                                      \n"\r
 223         "       switch(pixel_format)                                                                                                                    \n"\r
 224         "       {                                                                                                                                                               \n"\r
 225         "       case 0:         //gray                                                                                                                          \n"\r
 226         "               return vec4(texture2D(plane[0], gl_TexCoord[0].st).rrr, 1.0);                           \n"\r
 227         "       case 1:         //bgra,                                                                                                                         \n"\r
 228         "               return texture2D(plane[0], gl_TexCoord[0].st).bgra;                                                     \n"\r
 229         "       case 2:         //rgba,                                                                                                                         \n"\r
 230         "               return texture2D(plane[0], gl_TexCoord[0].st).rgba;                                                     \n"\r
 231         "       case 3:         //argb,                                                                                                                         \n"\r
 232         "               return texture2D(plane[0], gl_TexCoord[0].st).argb;                                                     \n"\r
 233         "       case 4:         //abgr,                                                                                                                         \n"\r
 234         "               return texture2D(plane[0], gl_TexCoord[0].st).gbar;                                                     \n"\r
 235         "       case 5:         //ycbcr,                                                                                                                        \n"\r
 236         "               {                                                                                                                                                       \n"\r
 237         "                       float y  = texture2D(plane[0], gl_TexCoord[0].st).r;                                    \n"\r
 238         "                       float cb = texture2D(plane[1], gl_TexCoord[0].st).r;                                    \n"\r
 239         "                       float cr = texture2D(plane[2], gl_TexCoord[0].st).r;                                    \n"\r
 240         "                       return ycbcra_to_rgba(y, cb, cr, 1.0);                                                                  \n"\r
 241         "               }                                                                                                                                                       \n"\r
 242         "       case 6:         //ycbcra                                                                                                                        \n"\r
 243         "               {                                                                                                                                                       \n"\r
 244         "                       float y  = texture2D(plane[0], gl_TexCoord[0].st).r;                                    \n"\r
 245         "                       float cb = texture2D(plane[1], gl_TexCoord[0].st).r;                                    \n"\r
 246         "                       float cr = texture2D(plane[2], gl_TexCoord[0].st).r;                                    \n"\r
 247         "                       float a  = texture2D(plane[3], gl_TexCoord[0].st).r;                                    \n"\r
 248         "                       return ycbcra_to_rgba(y, cb, cr, a);                                                                    \n"\r
 249         "               }                                                                                                                                                       \n"\r
 250         "       case 7:         //luma                                                                                                                          \n"\r
 251         "               {                                                                                                                                                       \n"\r
 252         "                       vec3 y3 = texture2D(plane[0], gl_TexCoord[0].st).rrr;                                   \n"\r
 253         "                       return vec4((y3-0.065)/0.859, 1.0);                                                                             \n"\r
 254         "               }                                                                                                                                                       \n"\r
 255         "       }                                                                                                                                                               \n"\r
 256         "       return vec4(0.0, 0.0, 0.0, 0.0);                                                                                                \n"\r
 257         "}                                                                                                                                                                      \n"\r
 258         "                                                                                                                                                                       \n"\r
 259         "void main()                                                                                                                                            \n"\r
 260         "{                                                                                                                                                                      \n"\r
 261         "       vec4 color = get_rgba_color();                                                                                                  \n"\r
 262         "   if(levels)                                                                                                                                          \n"\r
 263         "               color.rgb = LevelsControl(color.rgb, min_input, max_input, gamma, min_output, max_output); \n"\r
 264         "       if(csb)                                                                                                                                                 \n"\r
 265         "               color.rgb = ContrastSaturationBrightness(color.rgb, brt, sat, con);                     \n"\r
 266         "       if(has_local_key)                                                                                                                               \n"\r
 267         "               color *= texture2D(local_key, gl_TexCoord[1].st).r;                                                     \n"\r
 268         "       if(has_layer_key)                                                                                                                               \n"\r
 269         "               color *= texture2D(layer_key, gl_TexCoord[1].st).r;                                                     \n"\r
 270         "       color *= opacity;                                                                                                                               \n"\r
 271         "       color = blend(color);                                                                                                                   \n"\r
 272         "       gl_FragColor = color.bgra;                                                                                                              \n"\r
 273         "}                                                                                                                                                                      \n";\r
 274 }\r
 275 \r
 276 spl::shared_ptr<shader> get_image_shader(bool& blend_modes)\r
 277 {\r
 278         tbb::mutex::scoped_lock lock(g_shader_mutex);\r
 279 \r
 280         if(g_shader)\r
 281         {\r
 282                 blend_modes = g_blend_modes;\r
 283                 return spl::make_shared_ptr(g_shader);\r
 284         }\r
 285                 \r
 286         try\r
 287         {                               \r
 288                 g_blend_modes  = glTextureBarrierNV ? env::properties().get(L"configuration.blend-modes", false) : false;\r
 289                 g_shader.reset(new shader(get_vertex(), get_fragment(g_blend_modes)));\r
 290         }\r
 291         catch(...)\r
 292         {\r
 293                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 294                 CASPAR_LOG(warning) << "Failed to compile shader. Trying to compile without blend-modes.";\r
 295                                 \r
 296                 g_blend_modes = false;\r
 297                 g_shader.reset(new shader(get_vertex(), get_fragment(g_blend_modes)));\r
 298         }\r
 299                                                 \r
 300         //if(!g_blend_modes)\r
 301         //{\r
 302         //      ogl.blend_func(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE);\r
 303         //      CASPAR_LOG(info) << L"[shader] Blend-modes are disabled.";\r
 304         //}\r
 305 \r
 306         blend_modes = g_blend_modes;\r
 307         return spl::make_shared_ptr(g_shader);\r
 308 }\r
 309 \r
 310 }}}\r