git.sesse.net Git - casparcg/blob - common/gl/frame_buffer_object.cpp

   1 #include "../StdAfx.h"\r
   2 \r
   3 #include "frame_buffer_object.h"\r
   4 \r
   5 #include "../../common/gl/gl_check.h"\r
   6 \r
   7 #include <Glee.h>\r
   8 \r
   9 #include <memory>\r
  10 \r
  11 namespace caspar { namespace common { namespace gl {\r
  12 \r
  13 struct frame_buffer_object::implementation\r
  14 {\r
  15 public:\r
  16         implementation(size_t width, size_t height, GLenum mode) : mode_(mode)\r
  17         {\r
  18                 GL(glGenTextures(1, &texture_));        \r
  19                 GL(glBindTexture(GL_TEXTURE_2D, texture_));                     \r
  20                 GL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, \r
  21                                                         GL_UNSIGNED_BYTE, NULL));\r
  22                 GL(glGenFramebuffersEXT(1, &fbo_));             \r
  23                 GL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_));\r
  24                 GL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, mode_, GL_TEXTURE_2D, \r
  25                                                                                 texture_, 0));\r
  26         }\r
  27         \r
  28         ~implementation()\r
  29         {\r
  30                 glDeleteFramebuffersEXT(1, &fbo_);\r
  31                 glDeleteTextures(1, &texture_);\r
  32         }\r
  33 \r
  34         void bind_pixel_source()\r
  35         {\r
  36                 GL(glReadBuffer(mode_));\r
  37         }\r
  38 \r
  39         GLuint texture_;\r
  40         GLuint fbo_;\r
  41         GLenum mode_;\r
  42         size_t width_;\r
  43         size_t height_;\r
  44 };\r
  45 \r
  46 frame_buffer_object::frame_buffer_object(){}\r
  47 frame_buffer_object::frame_buffer_object(size_t width, size_t height, GLenum mode)\r
  48         : impl_(new implementation(width, height, mode)){}\r
  49 void frame_buffer_object::create(size_t width, size_t height, GLenum mode)\r
  50 {\r
  51         impl_.reset(new implementation(width, height, mode));\r
  52 }\r
  53 void frame_buffer_object::bind_pixel_source() {impl_->bind_pixel_source();}\r
  54 }}}