X-Git-Url: http://git.tdb.fi/?p=geometrycompositor.git;a=blobdiff_plain;f=source%2Fmain.c;h=23c061b86fc3a5557dfba3b2266499f29b36ef1c;hp=185c6b4b7bd609e35cfaaa8f28cd7e77fda2e87b;hb=6f6754fda1a75575ac37ee685f24d585369d9fde;hpb=bd63e587efd93c11a386a5fbebe21ea5adbbc4cb

diff --git a/source/main.c b/source/main.c
index 185c6b4..23c061b 100644
--- a/source/main.c
+++ b/source/main.c
@@ -71,6 +71,9 @@ typedef struct CompositedScreen
 	unsigned window_vertex_array;
 	unsigned framebuffer;
 	unsigned fb_texture;
+	Pixmap root_pixmap;
+	GLXPixmap root_glx_pixmap;
+	unsigned root_texture;
 	CompositedWindow *windows;
 	unsigned nwindows;
 	unsigned windows_capacity;
@@ -89,6 +92,7 @@ typedef struct Compositor
 	PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB;
 	PFNGLXBINDTEXIMAGEEXTPROC glXBindTexImageEXT;
 	PFNGLXRELEASETEXIMAGEEXTPROC glXReleaseTexImageEXT;
+	Atom root_pmap_atom;
 	Atom correction_atom;
 	Atom monitors_atom;
 	int dirty;
@@ -325,6 +329,8 @@ int create_gl_resources(CompositedScreen *screen)
 	glDepthMask(GL_FALSE);
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
 
+	screen->root_texture = create_2d_texture();
+
 	return 1;
 }
 
@@ -357,17 +363,11 @@ CompositedWindow *find_window_global(Compositor *compositor, Window w, Composite
 	return NULL;
 }
 
-void create_window_pixmap(Compositor *compositor, CompositedScreen *screen, CompositedWindow *window)
+GLXPixmap pixmap_to_glx_pixmap(Compositor *compositor, CompositedScreen *screen, Pixmap pixmap)
 {
 	int attribs[5];
 	unsigned i;
 
-	if(window->pixmap)
-	{
-		glXDestroyPixmap(compositor->display, window->glx_pixmap);
-		XFreePixmap(compositor->display, window->pixmap);
-	}
-
 	i = 0;
 	attribs[i++] = GLX_TEXTURE_TARGET_EXT;
 	attribs[i++] = GLX_TEXTURE_2D_EXT;
@@ -375,8 +375,19 @@ void create_window_pixmap(Compositor *compositor, CompositedScreen *screen, Comp
 	attribs[i++] = GLX_TEXTURE_FORMAT_RGBA_EXT;
 	attribs[i++] = None;
 
+	return glXCreatePixmap(compositor->display, screen->fbconfig, pixmap, attribs);
+}
+
+void create_window_pixmap(Compositor *compositor, CompositedScreen *screen, CompositedWindow *window)
+{
+	if(window->pixmap)
+	{
+		glXDestroyPixmap(compositor->display, window->glx_pixmap);
+		XFreePixmap(compositor->display, window->pixmap);
+	}
+
 	window->pixmap = XCompositeNameWindowPixmap(compositor->display, window->window);
-	window->glx_pixmap = glXCreatePixmap(compositor->display, screen->fbconfig, window->pixmap, attribs);
+	window->glx_pixmap = pixmap_to_glx_pixmap(compositor, screen, window->pixmap);
 	window->recreate_pixmap = 0;
 }
 
@@ -495,6 +506,7 @@ CompositedWindow *add_window(Compositor *compositor, CompositedScreen *screen, W
 
 	window->texture = create_2d_texture();
 	window->mask_texture = create_2d_texture();
+	window->use_mask = 0;
 	window->recreate_mask = (window->map_state==IsViewable);
 
 	XShapeSelectInput(compositor->display, window->window, ShapeNotifyMask);
@@ -796,6 +808,45 @@ void update_geometry_correction(Compositor *compositor, CompositedScreen *screen
 	XFree(values);
 }
 
+void update_root_pixmap(Compositor *compositor, CompositedScreen *screen)
+{
+	Atom prop_type;
+	int prop_format;
+	unsigned long overflow;
+	unsigned long length;
+	long *pixmap;
+	Window root;
+	int x, y;
+	unsigned width;
+	unsigned height;
+	unsigned border;
+	unsigned depth;
+
+	use_gl(compositor, screen);
+
+	if(screen->root_glx_pixmap)
+	{
+		glXDestroyPixmap(compositor->display, screen->root_glx_pixmap);
+		screen->root_glx_pixmap = 0;
+	}
+
+	XGetWindowProperty(compositor->display, screen->root, compositor->root_pmap_atom, 0, 1, False, XA_PIXMAP,
+		&prop_type, &prop_format, &length, &overflow, (unsigned char **)&pixmap);
+	if(prop_type!=XA_PIXMAP || prop_format!=32)
+	{
+		screen->root_pixmap = 0;
+		return;
+	}
+
+	screen->root_pixmap = pixmap[0];
+	if(XGetGeometry(compositor->display, screen->root_pixmap, &root, &x, &y, &width, &height, &border, &depth))
+		screen->root_glx_pixmap = pixmap_to_glx_pixmap(compositor, screen, screen->root_pixmap);
+	else
+		screen->root_pixmap = None;
+
+	XFree(pixmap);
+}
+
 int initialize_screen(Compositor *compositor, unsigned number)
 {
 	CompositedScreen *screen;
@@ -841,7 +892,11 @@ int initialize_screen(Compositor *compositor, unsigned number)
 			return 0;
 	XRRFreeScreenResources(xrr_res);
 
+	screen->root_pixmap = 0;
+	screen->root_glx_pixmap = 0;
+
 	update_geometry_correction(compositor, screen);
+	update_root_pixmap(compositor, screen);
 
 	XQueryTree(compositor->display, screen->root, &dummy_root, &dummy_parent, &children, &nchildren);
 
@@ -912,6 +967,7 @@ int initialize_compositor(Compositor *compositor)
 	compositor->glXBindTexImageEXT = (PFNGLXBINDTEXIMAGEEXTPROC)glXGetProcAddress((unsigned char *)"glXBindTexImageEXT");
 	compositor->glXReleaseTexImageEXT = (PFNGLXRELEASETEXIMAGEEXTPROC)glXGetProcAddress((unsigned char *)"glXReleaseTexImageEXT");
 
+	compositor->root_pmap_atom = XInternAtom(compositor->display, "_XROOTPMAP_ID", False);
 	compositor->correction_atom = XInternAtom(compositor->display, "GEOMETRY_CORRECTION", False);
 	compositor->monitors_atom = XInternAtom(compositor->display, "GEOMETRY_CORRECTION_MONITORS", False);
 
@@ -955,6 +1011,9 @@ void shutdown_screen(Compositor *compositor, CompositedScreen *screen)
 		}
 	}
 
+	glDeleteTextures(1, &screen->root_texture);
+	glXDestroyPixmap(compositor->display, screen->root_glx_pixmap);
+
 	glDeleteBuffers(1, &screen->window_vertex_buffer);
 	glDeleteVertexArrays(1, &screen->window_vertex_array);
 	glDeleteFramebuffers(1, &screen->framebuffer);
@@ -1105,14 +1164,14 @@ void process_property_event(Compositor *compositor, XPropertyEvent *event)
 {
 	CompositedScreen *screen;
 
-	if(event->atom!=compositor->correction_atom)
-		return;
-
 	screen = find_screen_by_root(compositor, event->window);
 	if(!screen)
 		return;
 
-	update_geometry_correction(compositor, screen);
+	if(event->atom==compositor->correction_atom)
+		update_geometry_correction(compositor, screen);
+	else if(event->atom==compositor->root_pmap_atom)
+		update_root_pixmap(compositor, screen);
 }
 
 void process_damage_event(Compositor *compositor, XDamageNotifyEvent *event)
@@ -1202,13 +1261,25 @@ void refresh_screen(Compositor *compositor, CompositedScreen *screen)
 
 	use_gl(compositor, screen);
 
+	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, screen->framebuffer);
 
-	glClearColor(0.5f, 0.5f, 0.5f, 0.0f);
-	glClear(GL_COLOR_BUFFER_BIT);
-
 	use_mask = -1;
 	glBindVertexArray(screen->window_vertex_array);
+
+	if(screen->root_pixmap)
+	{
+		use_mask = 0;
+		glUseProgram(screen->program);
+		glBindTexture(GL_TEXTURE_2D, screen->root_texture);
+		compositor->glXBindTexImageEXT(compositor->display, screen->root_glx_pixmap, GLX_FRONT_LEFT_EXT, NULL);
+		glUniform4f(screen->geometry_loc, 0.0f, 0.0f, 1.0f, 1.0f);
+		glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+		compositor->glXReleaseTexImageEXT(compositor->display, screen->root_glx_pixmap, GLX_FRONT_LEFT_EXT);
+	}
+	else
+		glClear(GL_COLOR_BUFFER_BIT);
+
 	for(i=0; i<screen->nwindows; ++i)
 	{
 		CompositedWindow *window;
@@ -1245,7 +1316,6 @@ void refresh_screen(Compositor *compositor, CompositedScreen *screen)
 	}
 
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
-	glClearColor(0.5f, 0.0f, 0.5f, 0.0f);
 	glClear(GL_COLOR_BUFFER_BIT);
 	glBindTexture(GL_TEXTURE_2D, screen->fb_texture);
 	glEnable(GL_PRIMITIVE_RESTART);