Exemplos de OpenGLState::disable em C++ (Cpp)

Exemplo n.º 1

Arquivo: vertex_array_drawing_request.cpp Projeto: BackupTheBerlios/windstille-svn

void
VertexArrayDrawingRequest::draw(int start, int end)
{
  assert(!vertices.empty());
  assert(texcoords.empty() || int(texcoords.size()/2) == num_vertices());
  assert(colors.empty() || int(colors.size()/4) == num_vertices());

  OpenGLState state;

  glClear(GL_DEPTH_BUFFER_BIT);
  state.disable(GL_DEPTH_TEST);
  state.enable(GL_BLEND);
  state.set_blend_func(blend_sfactor, blend_dfactor);
  
  if (texture)
    {
      state.bind_texture(texture);
    }

  if (!colors.empty())
    {
      state.enable_client_state(GL_COLOR_ARRAY);
      glColorPointer(4, GL_UNSIGNED_BYTE, 0, &*colors.begin());
    }
  else
    {
      state.disable_client_state(GL_COLOR_ARRAY);
      state.color(Color(1.0f, 1.0f, 1.0f));
    }

  if (!texcoords.empty())
    {
      state.enable_client_state(GL_TEXTURE_COORD_ARRAY);
      glTexCoordPointer(2, GL_FLOAT, 0, &*texcoords.begin());
    }
  else
    {
      state.disable_client_state(GL_TEXTURE_COORD_ARRAY);
    }

  // FIXME: Might be worth to not use VertexArrays when we have a pretty small number of vertices
  state.disable_client_state(GL_NORMAL_ARRAY);
  state.enable_client_state(GL_VERTEX_ARRAY);

  glVertexPointer  (3, GL_FLOAT, 0, &*vertices.begin());

  state.activate();

  glPushMatrix();
  glMultMatrixf(modelview.matrix);

  glDrawArrays(mode, start, end);

  glPopMatrix();
}