/***
*** The "draw" signal handler. All the OpenGL re-drawing should
*** be done here. This is repeatedly called as the painting routine
*** every time the 'draw' event is signalled.
***/
static gboolean
draw (GtkWidget *widget,
cairo_t *cr,
gpointer data)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context (widget);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (widget);
/*** OpenGL BEGIN ***/
if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return FALSE;
glClear (GL_COLOR_BUFFER_BIT);
glPushMatrix ();
glRotatef (spin, 0.0, 0.0, 1.0);
glColor3f (1.0, 1.0, 1.0);
glRectf (-25.0, -25.0, 25.0, 25.0);
glPopMatrix ();
/* Swap buffers */
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush ();
gdk_gl_drawable_gl_end (gldrawable);
/*** OpenGL END ***/
return TRUE;
}
static gboolean
darxen_splash_darea_expose(GtkWidget *widget, GdkEventExpose *event)
{
GdkGLContext *glcontext;
GdkGLDrawable *gldrawable;
glcontext = gtk_widget_get_gl_context(widget);
gldrawable = gtk_widget_get_gl_drawable(widget);
if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return TRUE;
glClear(GL_COLOR_BUFFER_BIT);
darxen_splash_darea_draw();
/* This code was fun, but no
int i;
for (i = 190; i > 4; i -= 10)
{
int x = g_random_int_range(0, 300 - i);
int y = g_random_int_range(0, 200 - i);
glColor4d(g_random_double_range(0.2, 1.0),g_random_double_range(0.2, 1.0),g_random_double_range(0.3, 1.0),g_random_double_range(0.5, 1.0));
glRecti(x, y, i, i);
}
*/
gdk_gl_drawable_swap_buffers(gldrawable);
gdk_gl_drawable_gl_end(gldrawable);
return FALSE;
}
gboolean
on_drawingarea1_expose_event (GtkWidget *widget,
GdkEventExpose *event,
gpointer user_data)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context (widget);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (widget);
/*** OpenGL BEGIN ***/
if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return FALSE;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glCallList (1);
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush ();
gdk_gl_drawable_gl_end (gldrawable);
/*** OpenGL END ***/
return FALSE;
}
static gboolean expose( GtkWidget* da, GdkEventConfigure* event, gpointer user_data )
{
GdkGLContext *GLcontext = gtk_widget_get_gl_context( da );
GdkGLDrawable* GLdrawable = GDK_GL_DRAWABLE( gtk_widget_get_gl_window( da ) );
if( !gdk_gl_drawable_gl_begin( GLdrawable, GLcontext ) )
g_assert_not_reached();
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glPushMatrix();
glShadeModel( GL_FLAT );
glCallList( dl_index );
render();
glPopMatrix();
if( gdk_gl_drawable_is_double_buffered( GLdrawable) )
gdk_gl_drawable_swap_buffers( GLdrawable );
else
glFlush();
gdk_gl_drawable_gl_end( GLdrawable );
return TRUE;
}
bool Render::on_expose_event(GdkEventExpose* event)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context (get_widget());
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (get_widget());
if (!gldrawable || !gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return false;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glLoadIdentity();
glTranslatef (0.0, 0.0, -2.0 * m_zoom);
glMultMatrixf (m_transform.M);
CenterView();
glPushMatrix();
glColor3f(0.75f,0.75f,1.0f);
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
Gtk::TreeModel::iterator iter = m_selection->get_selected();
m_view->Draw (iter);
glPopMatrix();
if (gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush();
gdk_gl_drawable_gl_end (gldrawable);
return true;
}
static gboolean redraw(GtkWidget *drawing_area, GdkEventExpose *event,
gpointer user_data)
{
GdkGLContext *gl_ctx = gtk_widget_get_gl_context(drawing_area);
GdkGLDrawable *gl_dbl = gtk_widget_get_gl_drawable(drawing_area);
UNUSED(event);
UNUSED(user_data);
if (!gdk_gl_drawable_gl_begin(gl_dbl, gl_ctx)) {
printf("Can't start drawable :(\n");
exit(1);
}
/* Do drawing stuff */
if (redraw_func)
redraw_func();
/* Finish up */
if (gdk_gl_drawable_is_double_buffered(gl_dbl))
gdk_gl_drawable_swap_buffers(gl_dbl);
else
glFlush();
gdk_gl_drawable_gl_end(gl_dbl);
return TRUE;
}
gboolean on_expose(GtkWidget *drawing, GdkEventExpose *event, gpointer _)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1,1, -1,1, 10,-10);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0, 0, -5);
glEnable(GL_COLOR_MATERIAL);
glDisable(GL_TEXTURE_2D);
glColor3f(1.0, 1.0, 1.0);
/* Create vertexes */
double verts[20][3];
for (int i = 0; i < G_N_ELEMENTS(verts); i++) {
float ang = 2*G_PI * i / G_N_ELEMENTS(verts);
verts[i][0] = sin(ang) * (i%2+0.5) * 0.6;
verts[i][1] = cos(ang) * (i%2+0.5) * 0.6;
verts[i][2] = 0;
}
/* Draw raw polygon */
glColor4f(0.5, 0.0, 0.0, 1.0);
GLUtesselator *tess = gluNewTess();
gluTessCallback(tess, GLU_TESS_BEGIN, glBegin);
gluTessCallback(tess, GLU_TESS_VERTEX, glVertex3dv);
gluTessCallback(tess, GLU_TESS_END, glEnd);
gluTessBeginPolygon(tess, NULL);
gluTessBeginContour(tess);
for (int i = 0; i < G_N_ELEMENTS(verts); i++)
gluTessVertex(tess, verts[i], verts[i]);
gluTessEndContour(tess);
gluTessEndPolygon(tess);
gluDeleteTess(tess);
/* Draw tesselated polygon */
//glColor4f(0.0, 0.0, 0.5, 1.0);
//glBegin(GL_POLYGON);
//for (int i = 0; i < G_N_ELEMENTS(verts); i++)
// glVertex3dv(verts[i]);
//glEnd();
/* Draw outline */
glColor4f(0.8, 0.8, 0.8, 1.0);
glBegin(GL_LINE_LOOP);
for (int i = 0; i < G_N_ELEMENTS(verts); i++)
glVertex3dv(verts[i]);
glEnd();
/* Flush */
GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current();
if (gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers(gldrawable);
else
glFlush();
return FALSE;
}
static gboolean display (GtkWidget* widget, GdkEventExpose *event)
{
GdkGLContext* glcontext = gtk_widget_get_gl_context (widget);
GdkGLDrawable* aldrawable = gtk_widget_get_gl_drawable (widget);
gdk_gl_drawable_gl_begin (gldrawable, glcontext);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
gluLookAt (0.0, 30.0, 100.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glPushMatrix ();
glRotatef (angle, 0.0, 1.0, 0.0);
glEnable (GL_COLOR_MATERIAL);
glColor3f (0.9, 0.5, 0.2);
gdk_gl_draw_teapot (TRUE, 25.0);
glDisable (GL_COLOR_MATERIAL);
glPopMatrix ();
gdk_gl_drawable_swap_buffers (gldrawable);
gdk_gl_drawable_gl_end (gldrawable);
return TRUE;
}
static gboolean
expose (GtkWidget *da, GdkEventExpose *event, gpointer user_data)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context (da);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (da);
if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
{
g_assert_not_reached ();
}
/* draw in here */
openglrender();
/* end */
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush ();
gdk_gl_drawable_gl_end (gldrawable);
return TRUE;
}
static gboolean cb_draw_ext(GtkWidget *widget, GdkEventExpose *e, void *_object)
{
/* recuperation du contexte et de la surface de notre widget */
GdkGLContext *context;
GdkGLDrawable *surface;
//fprintf(stderr, "cb_draw_ext: %p\n", THIS);
if (!gtk_widget_is_gl_capable(widget))
{
fprintf(stderr, "not capable!\n");
return TRUE;
}
context = gtk_widget_get_gl_context(widget);
surface = gtk_widget_get_gl_drawable(widget);
/* activation du contexte */
if(gdk_gl_drawable_gl_begin(surface, context))
{
//draw(); // dessin Opengl
init_control(THIS);
GB.Raise(THIS, EVENT_Draw, 0);
gdk_gl_drawable_swap_buffers(surface); // permutation tampons
gdk_gl_drawable_gl_end(surface); // désactivation du contexte
}
return TRUE;
}
gboolean cb_glext2d_expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context(widget);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(widget);
if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext)) {
return FALSE;
}
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
// view transformation
glLoadIdentity();
glTranslatef(trans_x, trans_y, -10.0);
glScalef(view_scale, view_scale, view_scale);
// render 2d scene
viz->handler.render_2d_scene();
if (gdk_gl_drawable_is_double_buffered(gldrawable)) {
gdk_gl_drawable_swap_buffers(gldrawable);
} else {
glFlush();
}
gdk_gl_drawable_gl_end(gldrawable);
return TRUE;
}
static gboolean
expose_event (GtkWidget *widget,
GdkEventExpose *event,
gpointer data)
{
/*** OpenGL BEGIN ***/
if (!gdk_gl_drawable_gl_begin (GDK_GL_DRAWABLE (glwindow), glcontext))
return FALSE;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glCallList (1);
if (gdk_gl_drawable_is_double_buffered (GDK_GL_DRAWABLE (glwindow)))
gdk_gl_drawable_swap_buffers (GDK_GL_DRAWABLE (glwindow));
else
glFlush ();
gdk_gl_drawable_gl_end (GDK_GL_DRAWABLE (glwindow));
/*** OpenGL END ***/
return TRUE;
}
static gboolean _chisel_native_openglview_expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer native_data ) {
if ( GTK_WIDGET_REALIZED(widget) ) {
assert( gtk_widget_is_gl_capable( widget ) );
GdkGLContext *glcontext = gtk_widget_get_gl_context( widget );
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable( widget );
assert( gdk_gl_drawable_gl_begin( gldrawable, glcontext ) );
Rect rect;
rect.origin.x = event->area.x;
rect.origin.y = event->area.y;
rect.size.width = event->area.width;
rect.size.height = event->area.height;
printf( "expose!\n" );
//_chisel_native_view_draw_rect_callback( (native_handle)widget, rect );
glViewport (0, 0,
widget->allocation.width, widget->allocation.height);
glClearColor( 0.0f, 0.0f, 1.0f, 1.0f );
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush ();
gdk_gl_drawable_gl_end( gldrawable );
}
return TRUE;
}
static gboolean expose(GtkWidget* widget, GdkEventExpose* e, gpointer data)
{
struct program *p = (struct program *)data;
GdkGLContext* context = gtk_widget_get_gl_context(widget);
GdkGLDrawable* drawable = gtk_widget_get_gl_drawable(widget);
(void)e;
p->draw.width = widget->allocation.width;
p->draw.height = widget->allocation.height;
if (!gdk_gl_drawable_gl_begin(drawable, context))
return FALSE;
if (p->viewed.type == TYPE_TEXTURE)
texture_draw(p);
else
draw_tri(p);
if (gdk_gl_drawable_is_double_buffered (drawable))
gdk_gl_drawable_swap_buffers(drawable);
else
glFlush();
gdk_gl_drawable_gl_end(drawable);
return TRUE;
}
static int lglext_drawable_swap_buffers(lua_State* L)
{
luaL_checktype(L, 1, LUA_TUSERDATA);
Object* obj = lua_touserdata(L, 1);
gdk_gl_drawable_swap_buffers(GDK_GL_DRAWABLE(obj->pointer));
return 0;
}
//virtual
void
RenderArea::swapBuffers() {
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (GTK_WIDGET(gobj()));
if (gdk_gl_drawable_is_double_buffered (gldrawable)) {
gdk_gl_drawable_swap_buffers (gldrawable);
} else {
glFlush ();
}
}
void CGLDrawingArea::GTK_FlushBufferGL()
/***************************************/
{
GtkWidget* widget = reinterpret_cast<GtkWidget*>(gobj());
GdkGLDrawable* gldrawable = gtk_widget_get_gl_drawable (widget);
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush();
}
void
GtkGlExtGlue::render()
{
// GNASH_REPORT_FUNCTION;
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (_drawing_area);
if (gdk_gl_drawable_is_double_buffered (gldrawable)) {
gdk_gl_drawable_swap_buffers (gldrawable);
} else {
glFlush();
}
}
void GLBase::glSwapBuffers()
{
if (drw == NULL)
{
printf("Error, glSwapBuffers() called outside of glBegin()/glEnd() block!\n");
return;
}
if (gdk_gl_drawable_is_double_buffered(drw) == TRUE)
gdk_gl_drawable_swap_buffers(drw);
else
glFlush();
}
gint glarea_init (GtkWidget* widget, gpointer data) {
// printf ("GLAREA_INIT - Realize Event\n");
gl_preview_struct *gl_hf = (gl_preview_struct *) data;
GdkGLContext *glcontext = gtk_widget_get_gl_context (widget);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (widget);
/*** OpenGL BEGIN ***/
if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext)) {
my_msg(_("Not able to display the Open GL preview"),WARNING);
return FALSE;
}
glClearColor(0.0,0.0,0.0,1.0);
glEnable(GL_DEPTH_TEST);
glPolygonMode(GL_FRONT, GL_FILL);
// glDisable(GL_CULL_FACE);
set_perspective (gl_hf->cameras[gl_hf->current_camera_id]);
// Lights
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glLightfv(GL_LIGHT0, GL_DIFFUSE, l0dif);
glLightfv(GL_LIGHT0, GL_SPECULAR, l0dif);
glLightfv(GL_LIGHT1, GL_DIFFUSE, l1dif);
glLightfv(GL_LIGHT1, GL_SPECULAR, l1dif);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
// Materials
glMaterialfv(GL_FRONT, GL_SPECULAR, mspec);
glMaterialf(GL_FRONT, GL_SHININESS, mshiny);
glShadeModel (GL_SMOOTH);
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush ();
gdk_gl_drawable_gl_end (gldrawable);
return TRUE;
}
static gboolean
draw(GtkWidget *widget,
cairo_t *cr,
gpointer data)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context(widget);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(widget);
GLfloat m[4][4];
mesh_info *info = (mesh_info*)g_object_get_data(G_OBJECT(widget), "mesh_info");
/*** OpenGL BEGIN ***/
if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
goto NO_GL;
/* basic initialization */
if (info->do_init == TRUE) {
initgl();
info->do_init = FALSE;
}
/* view */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(info->zoom, VIEW_ASPECT, 1,100);
glMatrixMode(GL_MODELVIEW);
/* draw object */
glClearColor(.3,.4,.6,1);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glTranslatef(0,0,-30);
add_quats(info->dquat, info->quat, info->quat);
build_rotmatrix(m,info->quat);
glMultMatrixf(&m[0][0]);
lw_object_show(info->lwobject);
/* swap backbuffer to front */
if (gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers(gldrawable);
else
glFlush();
gdk_gl_drawable_gl_end(gldrawable);
/*** OpenGL END ***/
NO_GL:
return TRUE;
}
/*************
* Callbacks *
*************/
static gboolean on_expose(GritsTester *tester, GdkEventExpose *event, gpointer _)
{
g_debug("GritsTester: on_expose");
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearDepth(1.0);
glEnable(GL_BLEND);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//glDisable(GL_DEPTH_TEST);
//glBlendFunc(GL_SRC_ALPHA, GL_ONE);
/* Lighting */
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
float light_ambient[] = {0.1f, 0.1f, 0.1f, 1.0f};
float light_diffuse[] = {0.6f, 0.6f, 0.8f, 1.0f};
float light_position[] = {-40.0f, 80.0f, 40.0f, 1.0f};
glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glPopMatrix();
glColor4f(1.0f, 1.0f, 1.0f, 0.5f);
/* Draw */
gdk_gl_draw_cube(FALSE, 2);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
for (GList *cur = tester->objects; cur; cur = cur->next)
grits_object_draw(cur->data, NULL);
if (tester->wireframe) {
glDisable(GL_LIGHTING);
glEnable(GL_POLYGON_OFFSET_LINE);
glPolygonOffset(-1,0);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
for (GList *cur = tester->objects; cur; cur = cur->next)
grits_object_draw(cur->data, NULL);
}
/* Flush */
GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current();
gdk_gl_drawable_swap_buffers(gldrawable);
return FALSE;
}
static gboolean on_expose_listing (GtkWidget *pWidget, GdkEventExpose *pExpose, CDListing *pListing)
{
if (g_bUseOpenGL && pListing->container.glContext)
{
GdkGLContext *pGlContext = gtk_widget_get_gl_context (pWidget);
GdkGLDrawable *pGlDrawable = gtk_widget_get_gl_drawable (pWidget);
if (!gdk_gl_drawable_gl_begin (pGlDrawable, pGlContext))
return FALSE;
if (pExpose->area.x + pExpose->area.y != 0)
{
glEnable (GL_SCISSOR_TEST);
glScissor ((int) pExpose->area.x,
(int) (pListing->container.bIsHorizontal ? pListing->container.iHeight : pListing->container.iWidth) -
pExpose->area.y - pExpose->area.height, // lower left corner of the scissor box.
(int) pExpose->area.width,
(int) pExpose->area.height);
}
cairo_dock_notify_on_container (CAIRO_CONTAINER (pListing), CAIRO_DOCK_RENDER_DEFAULT_CONTAINER, pListing, NULL);
glDisable (GL_SCISSOR_TEST);
if (gdk_gl_drawable_is_double_buffered (pGlDrawable))
gdk_gl_drawable_swap_buffers (pGlDrawable);
else
glFlush ();
gdk_gl_drawable_gl_end (pGlDrawable);
}
else
{
cairo_t *pCairoContext;
if (pExpose->area.x > 0 || pExpose->area.y > 0)
{
double fColor[4] = {0., 0., 0., 0.};
pCairoContext = cairo_dock_create_drawing_context_on_area (CAIRO_CONTAINER (pListing), &pExpose->area, fColor);
}
else
{
pCairoContext = cairo_dock_create_drawing_context (CAIRO_CONTAINER (pListing));
}
cairo_dock_notify_on_container (CAIRO_CONTAINER (pListing), CAIRO_DOCK_RENDER_DEFAULT_CONTAINER, pListing, pCairoContext);
cairo_destroy (pCairoContext);
}
return FALSE;
}
/*
* The "expose_event" signal handler for drawingarea1. All OpenGL re-drawing should be done here.
* This is called every time the expose/draw event is signalled.
*
*/
gboolean SludgeGLApplication::on_drawingarea1_expose_event(GtkWidget *theWidget, GdkEventExpose *theEvent)
{
GdkGLContext *glContext;
GdkGLDrawable *glDrawable;
// Don't continue if we get fed a dud window type.
if (theWidget->window == NULL)
{
return FALSE;
}
/*
* Lock rendering mutex if it's not busy - otherwise exit.
* This prevents the renderer being spammed by drawing requests if the rendering takes longer than the feed/timer process.
*/
if (!g_mutex_trylock(theRender_mutex))
return FALSE;
glContext = gtk_widget_get_gl_context (theWidget);
glDrawable = gtk_widget_get_gl_drawable (theWidget);
// Signal to gdk the start OpenGL operations.
if (!gdk_gl_drawable_gl_begin (glDrawable, glContext))
{
g_mutex_unlock(theRender_mutex);
return FALSE;
}
drawRect();
/*
* Swap rendering buffers out (an auto glFlush is issued after) if we previously managed to initialise
* it as a double-buffered context, otherwise issue a standard glFlush call to signal we've finished
* OpenGL rendering.
*/
if (gdk_gl_drawable_is_double_buffered (glDrawable))
gdk_gl_drawable_swap_buffers (glDrawable);
else
glFlush ();
// Signal to gdk we're done with OpenGL operations.
gdk_gl_drawable_gl_end (glDrawable);
// Release the rendering mutex.
g_mutex_unlock(theRender_mutex);
return FALSE;
}
static void
on_expose (GtkWidget *widget)
{
GdkGLContext *gl_context = gtk_widget_get_gl_context (widget);
GdkGLDrawable *gl_drawable = gtk_widget_get_gl_drawable (widget);
g_return_if_fail (gl_context != NULL && gl_drawable != NULL);
g_return_if_fail (gdk_gl_drawable_gl_begin (gl_drawable, gl_context));
/* Clear */
glClear (GL_COLOR_BUFFER_BIT);
draw_background_gradient ();
glPushMatrix ();
/* Rotation */
if (start_time != 0) {
gint64 time_passed = get_time () - start_time;
glRotatef (sin (time_passed / 1200000.0) * 45.0, 0.0, 1.0, 0.0);
}
/* Update textures */
if (buffer != NULL) {
update_textures_from_buffer ();
gst_buffer_unref (buffer);
buffer = NULL;
}
/* Reflection */
draw_video_plane (0.0, -2.0, 0.3, 0.0, TRUE);
/* Main video */
draw_video_plane (0.0, 0.0, 1.0, 1.0, FALSE);
/* Reset textures */
_glActiveTextureARB (GL_TEXTURE0_ARB); glDisable (GL_TEXTURE_RECTANGLE_ARB);
_glActiveTextureARB (GL_TEXTURE1_ARB); glDisable (GL_TEXTURE_RECTANGLE_ARB);
_glActiveTextureARB (GL_TEXTURE2_ARB); glDisable (GL_TEXTURE_RECTANGLE_ARB);
glPopMatrix ();
gdk_gl_drawable_swap_buffers (gl_drawable);
gdk_gl_drawable_gl_end (gl_drawable);
gtk_widget_queue_draw (widget);
}
void renderOpenGLFromBlocks(struct OpenGL* ogl, int width, int height,
int destWidth, int destHeight, int upx, int upy, int upwidth,
int upheight) {
if (!ogl->blocktextureids)
return;
printf("updating blocks\n");
configure_window(ogl, destWidth, destHeight);
gdk_gl_drawable_gl_begin(ogl->drawable, ogl->context);
int x, y;
int bw = width / 32;
int bh = 8;
glEnable(GL_TEXTURE_2D);
for (y = 0; y < height / bh; y++) {
for (x = 0; x < width / bw; x++) {
int block = y * 32 + x;
if (block >= ogl->nblocks)
printf("bad block %d %d -> %d\n", x, y, block);
else
glBindTexture(GL_TEXTURE_2D, ogl->blocktextureids[block]);
glBegin(GL_QUADS);
glTexCoord2i(0, 0);
glVertex2f(x * bw, y * bh);
glTexCoord2i(1, 0);
glVertex2f(x * bw + bw, y * bh);
glTexCoord2i(1, 1);
glVertex2f(x * bw + bw, y * bh + bh);
glTexCoord2i(0, 1);
glVertex2f(x * bw, y * bh + bh);
glEnd();
}
}
gdk_gl_drawable_swap_buffers(ogl->drawable);
gdk_gl_drawable_gl_end(ogl->drawable);
}
void yui_gl_draw(YuiGl * glxarea) {
#ifdef HAVE_LIBGTKGLEXT
GdkGLContext *glcontext = gtk_widget_get_gl_context (GTK_WIDGET(glxarea));
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (GTK_WIDGET(glxarea));
if (!gdk_gl_drawable_make_current (gldrawable, glcontext)) {
g_print("Cannot set gl drawable current\n");
return;
}
gdk_gl_drawable_swap_buffers(gldrawable);
#else
int buf_width, buf_height;
GdkPixbuf * pixbuf, * scaledpixbuf;
VIDCore->GetGlSize( &buf_width, &buf_height );
glxarea->pixels_width = GTK_WIDGET(glxarea)->allocation.width;
glxarea->pixels_height = GTK_WIDGET(glxarea)->allocation.height;
glxarea->pixels_rowstride = glxarea->pixels_width * 4;
glxarea->pixels_rowstride += (glxarea->pixels_rowstride % 4)? (4 - (glxarea->pixels_rowstride % 4)): 0;
if (dispbuffer == NULL) return;
pixbuf = gdk_pixbuf_new_from_data((const guchar *) dispbuffer, GDK_COLORSPACE_RGB, TRUE, 8,
buf_width, buf_height, buf_width*4, NULL, NULL);
if (( glxarea->pixels_width < buf_width + X_NOSCALE )&&( glxarea->pixels_height < buf_height + Y_NOSCALE )) {
gdk_draw_pixbuf(GTK_WIDGET(glxarea)->window, NULL, pixbuf, 0, 0,
(glxarea->pixels_width-buf_width)/2, (glxarea->pixels_height-buf_height)/2,
buf_width, buf_height, GDK_RGB_DITHER_NONE, 0, 0);
} else {
scaledpixbuf = gdk_pixbuf_scale_simple(pixbuf,
glxarea->pixels_width, glxarea->pixels_height, GDK_INTERP_NEAREST );
gdk_draw_pixbuf(GTK_WIDGET(glxarea)->window, NULL,
scaledpixbuf, 0, 0, 0, 0, glxarea->pixels_width, glxarea->pixels_height,
GDK_RGB_DITHER_NONE, 0, 0);
g_object_unref(scaledpixbuf);
}
g_object_unref(pixbuf);
#endif
glxarea->is_init = 1;
}
static gboolean
expose_event(GtkWidget * widget, GdkEventExpose * UNUSED(eventDetails), const GraphData * gd)
{
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(widget);
if (!gdk_gl_drawable_gl_begin(gldrawable, gtk_widget_get_gl_context(widget)))
return TRUE;
CheckOpenglError();
glClear(GL_COLOR_BUFFER_BIT);
DrawGraph(gd);
gdk_gl_drawable_swap_buffers(gldrawable);
gdk_gl_drawable_gl_end(gldrawable);
return TRUE;
}
static gboolean
expose_event (GtkWidget *widget,
GdkEventExpose *event,
gpointer data)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context (widget);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (widget);
/* brass */
static GLfloat ambient[4] = { 0.329412, 0.223529, 0.027451, 1.0 };
static GLfloat diffuse[4] = { 0.780392, 0.568627, 0.113725, 1.0 };
static GLfloat specular[4] = { 0.992157, 0.941176, 0.807843, 1.0 };
static GLfloat shininess = 0.21794872 * 128.0;
/*** OpenGL BEGIN ***/
if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return FALSE;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity ();
glTranslatef (0.0, 0.0, -10.0);
glPushMatrix ();
glTranslatef (0.0, pos_y, 0.0);
glRotatef (angle, 0.0, 1.0, 0.0);
glMaterialfv (GL_FRONT, GL_AMBIENT, ambient);
glMaterialfv (GL_FRONT, GL_DIFFUSE, diffuse);
glMaterialfv (GL_FRONT, GL_SPECULAR, specular);
glMaterialf (GL_FRONT, GL_SHININESS, shininess);
gdk_gl_draw_torus (TRUE, 0.3, 0.6, 30, 30);
glPopMatrix ();
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush ();
gdk_gl_drawable_gl_end (gldrawable);
/*** OpenGL END ***/
return TRUE;
}
static gboolean
expose_event_preview3d(GtkWidget * widget, GdkEventExpose * UNUSED(eventDetails), Material * pMat)
{
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(widget);
if (!gdk_gl_drawable_gl_begin(gldrawable, gtk_widget_get_gl_context(widget)))
return TRUE;
CheckOpenglError();
SetupLight();
Draw(pMat);
gdk_gl_drawable_swap_buffers(gldrawable);
gdk_gl_drawable_gl_end(gldrawable);
return TRUE;
}
