git.sesse.net Git - casparcg/blob - core/mixer/image/image_kernel.cpp

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\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 */\r
  20 #include "../../stdafx.h"\r
  21 \r
  22 #include "image_kernel.h"\r
  23 \r
  24 #include "image_shader.h"\r
  25 \r
  26 #include "blending_glsl.h"\r
  27 #include "../gpu/shader.h"\r
  28 #include "../gpu/device_buffer.h"\r
  29 #include "../gpu/ogl_device.h"\r
  30 \r
  31 #include <common/exception/exceptions.h>\r
  32 #include <common/gl/gl_check.h>\r
  33 #include <common/env.h>\r
  34 \r
  35 #include <core/video_format.h>\r
  36 #include <core/producer/frame/pixel_format.h>\r
  37 #include <core/producer/frame/frame_transform.h>\r
  38 \r
  39 #include <GL/glew.h>\r
  40 \r
  41 #include <boost/noncopyable.hpp>\r
  42 \r
  43 #include <unordered_map>\r
  44 \r
  45 namespace caspar { namespace core {\r
  46         \r
  47 GLubyte upper_pattern[] = {\r
  48         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  49         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  50         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  51         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00};\r
  52                 \r
  53 GLubyte lower_pattern[] = {\r
  54         0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, \r
  55         0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,\r
  56         0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,\r
  57         0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff};\r
  58 \r
  59 struct image_kernel::implementation : boost::noncopyable\r
  60 {       \r
  61         std::shared_ptr<shader> shader_;\r
  62         bool                                    blend_modes_;\r
  63                                                         \r
  64         void draw(ogl_device& ogl, draw_params&& params)\r
  65         {\r
  66                 static const double epsilon = 0.001;\r
  67 \r
  68                 CASPAR_ASSERT(params.pix_desc.planes.size() == params.textures.size());\r
  69 \r
  70                 if(params.textures.empty() || !params.background)\r
  71                         return;\r
  72 \r
  73                 if(params.transform.opacity < epsilon)\r
  74                         return;\r
  75                 \r
  76                 if(!std::all_of(params.textures.begin(), params.textures.end(), std::mem_fn(&device_buffer::ready)))\r
  77                 {\r
  78                         CASPAR_LOG(warning) << L"[image_mixer] Performance warning. Host to device transfer not complete, GPU will be stalled";\r
  79                         ogl.yield(); // Try to give it some more time.\r
  80                 }               \r
  81                 \r
  82                 // Bind textures\r
  83 \r
  84                 for(size_t n = 0; n < params.textures.size(); ++n)\r
  85                         params.textures[n]->bind(n);\r
  86 \r
  87                 if(params.local_key)\r
  88                         params.local_key->bind(texture_id::local_key);\r
  89                 \r
  90                 if(params.layer_key)\r
  91                         params.layer_key->bind(texture_id::layer_key);\r
  92                         \r
  93                 // Setup shader\r
  94 \r
  95                 if(!shader_)\r
  96                         shader_ = get_image_shader(ogl, blend_modes_);\r
  97                                                 \r
  98                 ogl.use(*shader_);\r
  99 \r
 100                 shader_->set("plane[0]",                texture_id::plane0);\r
 101                 shader_->set("plane[1]",                texture_id::plane1);\r
 102                 shader_->set("plane[2]",                texture_id::plane2);\r
 103                 shader_->set("plane[3]",                texture_id::plane3);\r
 104                 shader_->set("local_key",               texture_id::local_key);\r
 105                 shader_->set("layer_key",               texture_id::layer_key);\r
 106                 shader_->set("is_hd",                   params.pix_desc.planes.at(0).height > 700 ? 1 : 0);\r
 107                 shader_->set("has_local_key",   params.local_key);\r
 108                 shader_->set("has_layer_key",   params.layer_key);\r
 109                 shader_->set("pixel_format",    params.pix_desc.pix_fmt);       \r
 110                 shader_->set("opacity",                 params.transform.is_key ? 1.0 : params.transform.opacity);      \r
 111                 \r
 112                 // Setup blend_func\r
 113                 \r
 114                 if(params.transform.is_key)\r
 115                         params.blend_mode = blend_mode::normal;\r
 116 \r
 117                 if(blend_modes_)\r
 118                 {\r
 119                         params.background->bind(6);\r
 120 \r
 121                         shader_->set("background",      texture_id::background);\r
 122                         shader_->set("blend_mode",      params.blend_mode);\r
 123                 }\r
 124                 else\r
 125                 {\r
 126                         switch(params.blend_mode)\r
 127                         {\r
 128                         case blend_mode::mix:\r
 129                                 ogl.blend_func(GL_ONE, GL_ONE); \r
 130                                 break;\r
 131                         default:                                \r
 132                                 ogl.blend_func(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); \r
 133                         }               \r
 134                 }\r
 135 \r
 136                 // Setup image-adjustements\r
 137                 \r
 138                 if(params.transform.levels.min_input  > epsilon         ||\r
 139                    params.transform.levels.max_input  < 1.0-epsilon     ||\r
 140                    params.transform.levels.min_output > epsilon         ||\r
 141                    params.transform.levels.max_output < 1.0-epsilon     ||\r
 142                    std::abs(params.transform.levels.gamma - 1.0) > epsilon)\r
 143                 {\r
 144                         shader_->set("levels", true);   \r
 145                         shader_->set("min_input",       params.transform.levels.min_input);     \r
 146                         shader_->set("max_input",       params.transform.levels.max_input);\r
 147                         shader_->set("min_output",      params.transform.levels.min_output);\r
 148                         shader_->set("max_output",      params.transform.levels.max_output);\r
 149                         shader_->set("gamma",           params.transform.levels.gamma);\r
 150                 }\r
 151                 else\r
 152                         shader_->set("levels", false);  \r
 153 \r
 154                 if(std::abs(params.transform.brightness - 1.0) > epsilon ||\r
 155                    std::abs(params.transform.saturation - 1.0) > epsilon ||\r
 156                    std::abs(params.transform.contrast - 1.0)   > epsilon)\r
 157                 {\r
 158                         shader_->set("csb",     true);  \r
 159                         \r
 160                         shader_->set("brt", params.transform.brightness);       \r
 161                         shader_->set("sat", params.transform.saturation);\r
 162                         shader_->set("con", params.transform.contrast);\r
 163                 }\r
 164                 else\r
 165                         shader_->set("csb",     false); \r
 166                 \r
 167                 // Setup interlacing\r
 168 \r
 169                 if(params.transform.field_mode == core::field_mode::progressive)                        \r
 170                         ogl.disable(GL_POLYGON_STIPPLE);                        \r
 171                 else                    \r
 172                 {\r
 173                         ogl.enable(GL_POLYGON_STIPPLE);\r
 174 \r
 175                         if(params.transform.field_mode == core::field_mode::upper)\r
 176                                 ogl.stipple_pattern(upper_pattern);\r
 177                         else if(params.transform.field_mode == core::field_mode::lower)\r
 178                                 ogl.stipple_pattern(lower_pattern);\r
 179                 }\r
 180 \r
 181                 // Setup drawing area\r
 182                 \r
 183                 ogl.viewport(0, 0, params.background->width(), params.background->height());\r
 184                                                                 \r
 185                 auto m_p = params.transform.clip_translation;\r
 186                 auto m_s = params.transform.clip_scale;\r
 187 \r
 188                 bool scissor = m_p[0] > std::numeric_limits<double>::epsilon()                  || m_p[1] > std::numeric_limits<double>::epsilon() ||\r
 189                                            m_s[0] < (1.0 - std::numeric_limits<double>::epsilon())      || m_s[1] < (1.0 - std::numeric_limits<double>::epsilon());\r
 190 \r
 191                 if(scissor)\r
 192                 {\r
 193                         double w = static_cast<double>(params.background->width());\r
 194                         double h = static_cast<double>(params.background->height());\r
 195                 \r
 196                         ogl.enable(GL_SCISSOR_TEST);\r
 197                         ogl.scissor(static_cast<size_t>(m_p[0]*w), static_cast<size_t>(m_p[1]*h), static_cast<size_t>(m_s[0]*w), static_cast<size_t>(m_s[1]*h));\r
 198                 }\r
 199 \r
 200                 auto f_p = params.transform.fill_translation;\r
 201                 auto f_s = params.transform.fill_scale;\r
 202                 \r
 203                 // Set render target\r
 204                 \r
 205                 ogl.attach(*params.background);\r
 206                 \r
 207                 // Draw\r
 208 \r
 209                 glBegin(GL_QUADS);\r
 210                         glMultiTexCoord2d(GL_TEXTURE0, 0.0, 0.0); glMultiTexCoord2d(GL_TEXTURE1,  f_p[0]        ,  f_p[1]        );             glVertex2d( f_p[0]        *2.0-1.0,  f_p[1]        *2.0-1.0);\r
 211                         glMultiTexCoord2d(GL_TEXTURE0, 1.0, 0.0); glMultiTexCoord2d(GL_TEXTURE1, (f_p[0]+f_s[0]),  f_p[1]        );             glVertex2d((f_p[0]+f_s[0])*2.0-1.0,  f_p[1]        *2.0-1.0);\r
 212                         glMultiTexCoord2d(GL_TEXTURE0, 1.0, 1.0); glMultiTexCoord2d(GL_TEXTURE1, (f_p[0]+f_s[0]), (f_p[1]+f_s[1]));             glVertex2d((f_p[0]+f_s[0])*2.0-1.0, (f_p[1]+f_s[1])*2.0-1.0);\r
 213                         glMultiTexCoord2d(GL_TEXTURE0, 0.0, 1.0); glMultiTexCoord2d(GL_TEXTURE1,  f_p[0]        , (f_p[1]+f_s[1]));             glVertex2d( f_p[0]        *2.0-1.0, (f_p[1]+f_s[1])*2.0-1.0);\r
 214                 glEnd();\r
 215 \r
 216                 // Cleanup\r
 217 \r
 218                 ogl.disable(GL_SCISSOR_TEST);   \r
 219                                 \r
 220                 params.textures.clear();\r
 221                 ogl.yield(); // Return resources to pool as early as possible.\r
 222 \r
 223                 if(blend_modes_)\r
 224                 {\r
 225                         // http://www.opengl.org/registry/specs/NV/texture_barrier.txt\r
 226                         // This allows us to use framebuffer (background) both as source and target while blending.\r
 227                         glTextureBarrierNV(); \r
 228                 }\r
 229         }\r
 230 };\r
 231 \r
 232 image_kernel::image_kernel() : impl_(new implementation()){}\r
 233 void image_kernel::draw(ogl_device& ogl, draw_params&& params)\r
 234 {\r
 235         impl_->draw(ogl, std::move(params));\r
 236 }\r
 237 \r
 238 }}