renderstack::render_target Class Reference

abstraction for gl framebuffer object

#include <render_target.hpp>

Inherited by renderstack::default_render_target.

Public Member Functions

 render_target ()
 render_target (int width, int height)
 render_target (int width, int height, int gl_framebuffer_object)
int width () const
int height () const
unsigned int gl_framebuffer_object () const
framebuffer_attachment & attach_texture (int gl_attachment, int gl_format)
framebuffer_attachment & attach_renderbuffer (int gl_attachment, int gl_format, int sample_count)
void resize (int width, int height)
void begin () const
void end () const
void blit (render_target const &dst) const
void check () const
void debug () const

Detailed Description

Definition at line 71 of file render_target.hpp.

Constructor & Destructor Documentation

renderstack::render_target::render_target (  ) 

Definition at line 34 of file render_target.cpp.

00035 :   m_width(0)
00036 ,   m_height(0)
00037 ,   m_gl_framebuffer_object((unsigned int)(~0))
00038 {
00039 }

renderstack::render_target::render_target ( int  width,
int  height 
)

Definition at line 57 of file render_target.cpp.

00061 :   m_width(width)
00062 ,   m_height(height)
00063 ,   m_gl_framebuffer_object((unsigned int)(~0))
00064 {
00065     ::GLboolean res = ::rs_gl_is_framebuffer(m_gl_framebuffer_object);
00066     if(res != GL_FALSE)
00067     {
00068         ::rs_gl_delete_framebuffers(1, &m_gl_framebuffer_object);
00069     }
00070     ::rs_gl_gen_framebuffers(1, &m_gl_framebuffer_object);
00071 
00072     ::rs_gl_bind_framebuffer(
00073         GL_FRAMEBUFFER,                 /*  DRAW, READ  */ 
00074         m_gl_framebuffer_object
00075     );
00076 }

renderstack::render_target::render_target ( int  width,
int  height,
int  gl_framebuffer_object 
)

Definition at line 41 of file render_target.cpp.

00046 :   m_width(width)
00047 ,   m_height(height)
00048 ,   m_gl_framebuffer_object(gl_framebuffer_object)
00049 {
00050     m_gl_framebuffer_object = 0;
00051 
00052     framebuffer_attachment attachment(GL_BACK_LEFT, attachment_renderbuffer);
00053 
00054     attachment.renderbuffer().set(0);
00055 }

Member Function Documentation

int renderstack::render_target::width (  )  const [inline]

Definition at line 78 of file render_target.hpp.

00078 { return m_width; }

int renderstack::render_target::height (  )  const [inline]

Definition at line 79 of file render_target.hpp.

00079 { return m_height; }

unsigned int renderstack::render_target::gl_framebuffer_object (  )  const [inline]

Definition at line 80 of file render_target.hpp.

00080 { return m_gl_framebuffer_object; }

framebuffer_attachment & renderstack::render_target::attach_texture ( int  gl_attachment,
int  gl_format 
)

Definition at line 104 of file render_target.cpp.

00105 {
00106     framebuffer_attachment attachment(gl_attachment, attachment_texture);
00107     attachment.texture().set(
00108         m_width,
00109         m_height,
00110         GL_TEXTURE_2D,
00111         GL_TEXTURE_2D,
00112         GL_NEAREST,
00113         GL_NEAREST,
00114         GL_CLAMP_TO_EDGE,
00115         gl_format
00116     );
00117 
00118     attachment.texture().update();
00119 
00120     rs_gl_bind_framebuffer(
00121         GL_FRAMEBUFFER,                 /*  DRAW, READ  */ 
00122         m_gl_framebuffer_object
00123     );
00124 
00125     rs_gl_framebuffer_texture_2d(
00126         GL_FRAMEBUFFER,                             /*  target      DRAW, READ  */ 
00127         attachment.gl_attachment_point(),           /*  attachment  */ 
00128         attachment.texture().gl_teximage_target(),  /*  textarget   */ 
00129         attachment.texture().gl_texture_object(),   /*  texture     */ 
00130         0                                           /*  level       */ 
00131     );
00132 
00133     m_attachments.push_back(attachment);
00134 
00135     return m_attachments.back();
00136 }

framebuffer_attachment & renderstack::render_target::attach_renderbuffer ( int  gl_attachment,
int  gl_format,
int  sample_count 
)

Definition at line 138 of file render_target.cpp.

00143 {
00144     framebuffer_attachment attachment(gl_attachment, attachment_renderbuffer);
00145 
00146     attachment.renderbuffer().set(m_width, m_height, gl_format, sample_count);
00147 
00148     ::rs_gl_bind_framebuffer(
00149         GL_FRAMEBUFFER,                         /*  DRAW, READ  */ 
00150         m_gl_framebuffer_object
00151     );
00152 
00153     ::rs_gl_framebuffer_renderbuffer(
00154         GL_FRAMEBUFFER,                                     /*  enum target         DRAW, READ  */ 
00155         attachment.gl_attachment_point(),                   /*  attachment          */ 
00156         GL_RENDERBUFFER,                                    /*  renderbuffertarget  */ 
00157         attachment.renderbuffer().gl_renderbuffer_object()  /*  renderbuffer        */ 
00158     );
00159 
00160     m_attachments.push_back(attachment);
00161 
00162     check();
00163 
00164     return m_attachments.back();
00165 }

void renderstack::render_target::resize ( int  width,
int  height 
)

Definition at line 168 of file render_target.cpp.

00169 {
00170     m_width  = width;
00171     m_height = height;
00172 }

void renderstack::render_target::begin (  )  const

Definition at line 175 of file render_target.cpp.

00176 {
00177     ::rs_gl_bind_framebuffer(
00178         GL_FRAMEBUFFER,                 /*  DRAW, READ  */ 
00179         m_gl_framebuffer_object
00180     );
00181 }

void renderstack::render_target::end (  )  const

Definition at line 183 of file render_target.cpp.

00184 {
00185     ::rs_gl_bind_framebuffer(GL_FRAMEBUFFER, 0);
00186 }

void renderstack::render_target::blit ( render_target const &  dst  )  const

Definition at line 188 of file render_target.cpp.

00189 {
00190     ::rs_gl_bind_framebuffer(GL_READ_FRAMEBUFFER, gl_framebuffer_object());
00191     ::rs_gl_bind_framebuffer(GL_DRAW_FRAMEBUFFER, dst.gl_framebuffer_object());
00192 
00193     ::rs_gl_blit_framebuffer(
00194         0,                      /*  GLint       srcX0,  */ 
00195         0,                      /*  GLint       srcY0,  */ 
00196         width(),                /*  GLint       srcX1,  */ 
00197         height(),               /*  GLint       srcY1,  */ 
00198         0,                      /*  GLint       dstX0,  */ 
00199         0,                      /*  GLint       dstY0,  */ 
00200         dst.width(),            /*  GLint       dstX1,  */ 
00201         dst.height(),           /*  GLint       dstY1,  */ 
00202         GL_COLOR_BUFFER_BIT,  /*  GLbitfield  mask,   */ 
00203         GL_NEAREST            /*  GLenum      filter  */ 
00204     );
00205 }

void renderstack::render_target::check (  )  const

Definition at line 92 of file render_target.cpp.

00093 {
00094     ::GLenum status = ::rs_gl_check_framebuffer_status(GL_FRAMEBUFFER);
00095 
00096     if(status == GL_FRAMEBUFFER_COMPLETE)
00097     {
00098         return;
00099     }
00100 
00101     ::rs_log("framebuffer not complete: %s\n", ::rs_gl_enum_string(status));
00102 }

void renderstack::render_target::debug (  )  const

Definition at line 207 of file render_target.cpp.

00208 {
00209     int framebuffer         = GL_DRAW_FRAMEBUFFER;      /*  READ, DRAW      */ 
00210     int color_attachment    = GL_COLOR_ATTACHMENT0;     /*  GL_BACK_LEFT    */ 
00211     int depth_attachment    = GL_DEPTH_ATTACHMENT;
00212     int stencil_attachment  = GL_STENCIL_ATTACHMENT;
00213 
00214     {
00215         int params[4];
00216 
00217         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00218             framebuffer,                                /*  target, DRAW, READ  */ 
00219             color_attachment,                           /*  attachment          */ 
00220             GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE,    /*  pname               */ 
00221             &params[0]                                  /*  params              */ 
00222         );
00223         ::rs_log(
00224             "color attachment object type = %s\n", 
00225             ::rs_gl_enum_string(params[0])
00226         );
00227 
00228         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00229             framebuffer,                                /*  target, DRAW, READ  */ 
00230             color_attachment,                           /*  attachment          */ 
00231             GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,    /*  pname               */ 
00232             &params[0]                                  /*  params              */ 
00233         );
00234         ::rs_log("color attachment object name = %d\n", params[0]);
00235 
00236         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00237             framebuffer,                                /*  target, DRAW, READ  */ 
00238             color_attachment,                           /*  attachment          */ 
00239             GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE, /*  pname               */ 
00240             &params[0]                                  /*  params              */ 
00241         );
00242         ::rs_log(
00243             "color attachment component type = %s\n", 
00244             ::rs_gl_enum_string(params[0])
00245         );
00246 
00247         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00248             framebuffer,                                /*  target, DRAW, READ  */ 
00249             color_attachment,                           /*  attachment          */ 
00250             GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING, /*  pname               */ 
00251             &params[0]                                  /*  params              */ 
00252         );
00253         ::rs_log(
00254             "color attachment color encoding type = %s\n", 
00255             ::rs_gl_enum_string(params[0])
00256         );
00257 
00258         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00259             framebuffer,                            /*  target, DRAW, READ  */ 
00260             color_attachment,                       /*  attachment          */ 
00261             GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE,   /*  pname               */ 
00262             &params[0]                              /*  params              */ 
00263         );
00264         ::rs_log(
00265             "color attachment red size = %d\n", 
00266             params[0]
00267         );
00268 
00269         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00270             framebuffer,                            /*  target, DRAW, READ  */ 
00271             color_attachment,                       /*  attachment          */ 
00272             GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE, /*  pname               */ 
00273             &params[0]                              /*  params              */ 
00274         );
00275         ::rs_log(
00276             "color attachment green size = %d\n", 
00277             params[0]
00278         );
00279 
00280         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00281             framebuffer,                            /*  target, DRAW, READ  */ 
00282             color_attachment,                       /*  attachment          */ 
00283             GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE,  /*  pname               */ 
00284             &params[0]                              /*  params              */ 
00285         );
00286         ::rs_log(
00287             "color attachment blue size = %d\n", 
00288             params[0]
00289         );
00290 
00291         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00292             framebuffer,                            /*  target, DRAW, READ  */ 
00293             color_attachment,                       /*  attachment          */ 
00294             GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE, /*  pname               */ 
00295             &params[0]                              /*  params              */ 
00296         );
00297         ::rs_log(
00298             "color attachment alpha size = %d\n", 
00299             params[0]
00300         );
00301 
00302         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00303             framebuffer,                            /*  target, DRAW, READ  */ 
00304             depth_attachment,                       /*  attachment          */ 
00305             GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE, /*  pname               */ 
00306             &params[0]                              /*  params              */ 
00307         );
00308         ::rs_log(
00309             "depth attachment depth size = %d\n", 
00310             params[0]
00311         );
00312 
00313         ::rs_gl_get_framebuffer_attachment_parameter_iv(
00314             framebuffer,                                /*  target, DRAW, READ  */ 
00315             stencil_attachment,                         /*  attachment          */ 
00316             GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE,   /*  pname               */ 
00317             &params[0]                                  /*  params              */ 
00318         );
00319         ::rs_log(
00320             "stencil attachment stencil size = %d\n", 
00321             params[0]
00322         );
00323     }
00324 }

The documentation for this class was generated from the following files:
Generated on Sun Apr 11 12:23:12 2010 for RenderStack by  doxygen 1.6.3