void RenderBuffer::PrepareColorBuffer(GLsizei width, GLsizei height)
{
glBindRenderbuffer(GL_RENDERBUFFER, _id);
CHECK_OPENGL_ERROR();
glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA4, width, height);
CHECK_OPENGL_ERROR();
glBindRenderbuffer(GL_RENDERBUFFER, 0);
CHECK_OPENGL_ERROR();
}
void RenderBuffer::PrepareDepthBuffer(GLsizei width, GLsizei height)
{
glBindRenderbuffer(GL_RENDERBUFFER, _id);
CHECK_OPENGL_ERROR();
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
CHECK_OPENGL_ERROR();
glBindRenderbuffer(GL_RENDERBUFFER, 0);
CHECK_OPENGL_ERROR();
}
oak::Window::Window(int x, int y, int w, int h, const std::string& name)
: _lastWidth(-1),
_lastHeight(-1),
_lastX(-1),
_lastY(-1)
{
glutInitWindowSize(w, h);
glutInitWindowPosition(x, y);
_glutWindow = glutCreateWindow(name.c_str());
_windowMap[_glutWindow] = this;
#ifdef Q_OS_WIN
glewExperimental = GL_TRUE;
glewInit();
glGetError();
CHECK_OPENGL_ERROR();
#endif
glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_DEPTH_TEST);
glutDisplayFunc(paintCb);
glutKeyboardFunc(keyCb);
glutReshapeFunc(resizeCb);
// ?
resizeCb(w, h);
}
void Device::MakeCurrentContext(void)
{
if (_deviceContext AND wglGetCurrentContext() != _renderContext)
wglMakeCurrent(_deviceContext, _renderContext);
CHECK_OPENGL_ERROR(SOURCE_LOCATION);
}
RenderBuffer::RenderBuffer()
{
glGenRenderbuffers(1, &_id);
CHECK_OPENGL_ERROR();
}
RenderBuffer::~RenderBuffer()
{
glDeleteRenderbuffers(1, &_id);
CHECK_OPENGL_ERROR();
}
void depth_view_t::paintGL()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
qglColor(Qt::white);
auto histogram = _depth_map.get_histogram();
if(histogram.size() > 0)
{
float factor[3] = {1, 1, 1};
for (int y = 0; y < _depth_map.height(); ++y)
{
for (int x = 0; x < _depth_map.width(); ++x)
{
factor[0] = Colors[3][0];
factor[1] = Colors[3][1];
factor[2] = Colors[3][2];
int hist_value = histogram[_depth_map.get(x,y)];
auto& pix = _tex_map[x + _tex_map_width*y];
pix.r = hist_value*factor[0];
pix.g = hist_value*factor[1];
pix.b = hist_value*factor[2];
factor[0] = factor[1] = factor[2] = 1;
}
}
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, _tex_map_width, _tex_map_height, 0, GL_RGB, GL_UNSIGNED_BYTE, _tex_map.data());
// Display the OpenGL texture map
glColor4f(1,1,1,1);
glEnable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
// upper left
glTexCoord2f(0, 0);
glVertex2f(0, 0);
// upper right
glTexCoord2f((float)_depth_map.width()/(float)_tex_map_width, 0);
glVertex2f(_width, 0);
// bottom right
glTexCoord2f((float)_depth_map.width()/(float)_tex_map_width, (float)_depth_map.height()/(float)_tex_map_height);
glVertex2f(_width, _height);
// bottom left
glTexCoord2f(0, (float)_depth_map.height()/(float)_tex_map_height);
glVertex2f(0, _height);
glEnd();
glDisable(GL_TEXTURE_2D);
//paintTrack();
}
CHECK_OPENGL_ERROR();
glPopMatrix();
swapBuffers();
}
void Device::SetViewport(UInt width, UInt height)
{
glViewport(0, 0, width, height);
CHECK_OPENGL_ERROR(SOURCE_LOCATION);
}
void Device::Flush(void)
{
glFlush();
CHECK_OPENGL_ERROR(SOURCE_LOCATION);
}
void Device::SwapChain(void)
{
SwapBuffers(_deviceContext);
CHECK_OPENGL_ERROR(SOURCE_LOCATION);
}
void Device::DoneCurrentContext(void)
{
wglMakeCurrent(nullptr, nullptr);
CHECK_OPENGL_ERROR(SOURCE_LOCATION);
}
void Device::ResetCurrentContext(void)
{
wglMakeCurrent(_deviceContext, nullptr);
CHECK_OPENGL_ERROR(SOURCE_LOCATION);
}
