Two pass planet slice

src/Cocoa/MyOpenGLView.h

@@ -30,7 +30,7 @@ MA 02110-1301, USA.
 
 #define MAX_CLEAR_DEPTH		10000000000.0
 // 10 000 000 km.
-#define INTERMEDIATE_CLEAR_DEPTH		100.0
+#define INTERMEDIATE_CLEAR_DEPTH		50000.0
 // 100 m.
 
 #define	MIN_FOV_DEG		30.0f

src/Core/Entities/Entity.h

@@ -150,6 +150,7 @@ enum OOScanClass
 	OOTimeAbsolute			spawnTime;
 
 	struct JSObject			*_jsSelf;
+	NSUInteger				lastDrawCounter;
 
 @private
 	NSUInteger				_sessionID;
@@ -274,6 +275,9 @@ enum OOScanClass
 - (void) dumpState;		// General "describe situtation verbosely in log" command.
 - (void) dumpSelfState;	// Subclasses should override this, not -dumpState, and call throught to super first.
 
+- (NSUInteger) lastDrawCounter;
+- (void) setLastDrawCounter: (NSUInteger) drawCounter;
+
 // Subclass repsonsibilities
 - (double) findCollisionRadius;
 - (void) drawImmediate:(bool)immediate translucent:(bool)translucent;

src/Core/Entities/Entity.m

@@ -94,6 +94,7 @@ - (id) init
 	gTotalEntityMemory += [self oo_objectSize];
 #endif
 
+	lastDrawCounter = 0;
 	return self;
 }
 
@@ -1047,6 +1048,19 @@ - (void)subEntityReallyDied:(ShipEntity *)sub
 }
 
 
+- (NSUInteger) lastDrawCounter
+{
+	return lastDrawCounter;
+}
+
+
+- (void) setLastDrawCounter: (NSUInteger) drawCounter
+{
+	lastDrawCounter = drawCounter;
+	return;
+}
+
+
 // For shader bindings.
 - (GLfloat)universalTime
 {

src/Core/Universe.h

@@ -309,6 +309,7 @@ enum
 
 	NSMutableSet			*entitiesDeadThisUpdate;
 	int						framesDoneThisUpdate;
+	NSUInteger				drawCounter;
 
 #if OOLITE_SPEECH_SYNTH
 #if OOLITE_MAC_OS_X

src/Core/Universe.m

@@ -382,6 +382,7 @@ - (id) initWithGameView:(MyOpenGLView *)inGameView
 	universeRegion = [[CollisionRegion alloc] initAsUniverse];
 	entitiesDeadThisUpdate = [[NSMutableSet alloc] init];
 	framesDoneThisUpdate = 0;
+	drawCounter = 0;
 
 	[[GameController sharedController] logProgress:DESC(@"initializing-debug-support")];
 	OOInitDebugSupport();
@@ -4397,21 +4398,38 @@ - (void) drawUniverse
 			}
 
 			BOOL		fogging, bpHide = [self breakPatternHide];
-
+
+			drawCounter++;
+			float breakPlane = INTERMEDIATE_CLEAR_DEPTH;
+			for( int i = 0; i < draw_count; i++ )
+			{
+				if ([my_entities[i] cameraRangeFront] > breakPlane)
+				{
+					continue;
+				}
+				if ([my_entities[i] cameraRangeBack] > breakPlane)
+				{
+					breakPlane = [my_entities[i] cameraRangeBack];
+				}
+			}
+
+			// We need to bring forward the near plane of the frustum on the long distance pass by this factor to avoid clipping objects at the corner of the window
+			float distanceFactor = sqrt(1 + ([gameView fov:YES]*[gameView fov:YES] * (1.0 + 1.0/(aspect*aspect)))); 
+
 			for (vdist=0;vdist<=1;vdist++)
 			{
 				float   nearPlane = vdist ? 1.0 : INTERMEDIATE_CLEAR_DEPTH;
-				float   farPlane = vdist ? INTERMEDIATE_CLEAR_DEPTH : MAX_CLEAR_DEPTH;
-				float   ratio = (displayGUI ? 0.5 : [gameView fov:YES]) * nearPlane; // 0.5 is field of view ratio for GUIs
+				float   farPlane = vdist ? breakPlane : MAX_CLEAR_DEPTH;
+				float   ratio = (displayGUI ? 0.5 : [gameView fov:YES]) * nearPlane / distanceFactor; // 0.5 is field of view ratio for GUIs
 
 				OOGLResetProjection();
 				if ((displayGUI && 4*aspect >= 3) || (!displayGUI && 4*aspect <= 3))
 				{
-					OOGLFrustum(-ratio, ratio, -aspect*ratio, aspect*ratio, nearPlane, farPlane);
+					OOGLFrustum(-ratio, ratio, -aspect*ratio, aspect*ratio, nearPlane / distanceFactor, farPlane);
 				}
 				else
 				{
-					OOGLFrustum(-3*ratio/aspect/4, 3*ratio/aspect/4, -3*ratio/4, 3*ratio/4, nearPlane, farPlane);
+					OOGLFrustum(-3*ratio/aspect/4, 3*ratio/aspect/4, -3*ratio/4, 3*ratio/4, nearPlane / distanceFactor, farPlane);
 				}
 
 				[self getActiveViewMatrix:&view_matrix forwardVector:&view_dir upVector:&view_up];
@@ -4471,7 +4489,7 @@ - (void) drawUniverse
 						{
 							[self setMainLightPosition:[cachedSun cameraRelativePosition]];
 						}
-						OOGL(glLightfv(GL_LIGHT1, GL_POSITION, main_light_position));					
+						OOGL(glLightfv(GL_LIGHT1, GL_POSITION, main_light_position));	
 					}
 					else
 					{
@@ -4494,13 +4512,13 @@ - (void) drawUniverse
 					GLfloat		fogFactor = 0.5 / airResistanceFactor;
 					double 		fog_scale, half_scale;
 					GLfloat 	flat_ambdiff[4]	= {1.0, 1.0, 1.0, 1.0};   // for alpha
-					GLfloat 	mat_no[4]		= {0.0, 0.0, 0.0, 1.0};   // nothing
+					GLfloat 	mat_no[4] = {0.0, 0.0, 0.0, 1.0};   // nothing
 					GLfloat		fog_blend;
 
 					OOGL(glHint(GL_FOG_HINT, [self reducedDetail] ? GL_FASTEST : GL_NICEST));
-				
+
 					[self defineFrustum]; // camera is set up for this frame
-				
+
 					OOVerifyOpenGLState();
 					OOCheckOpenGLErrors(@"Universe after setting up for opaque pass");
 					OOLog(@"universe.profile.draw", @"%@", @"Begin opaque pass");
@@ -4513,9 +4531,11 @@ - (void) drawUniverse
 						OOEntityStatus d_status = [drawthing status];
 
 						if (bpHide && !drawthing->isImmuneToBreakPatternHide)  continue;
-						if (vdist == 1 && [drawthing cameraRangeFront] > farPlane*1.5) continue;
-						if (vdist == 0 && [drawthing cameraRangeBack] < nearPlane) continue;
-//						if (vdist == 1 && [drawthing isPlanet]) continue;
+						if ([drawthing lastDrawCounter] == drawCounter) continue;
+						if (vdist == 0 && [drawthing cameraRangeFront] < nearPlane)
+						{
+							continue;
+						}
 
 						if (!((d_status == STATUS_COCKPIT_DISPLAY) ^ demoShipMode)) // either demo ship mode or in flight
 						{
@@ -4561,6 +4581,7 @@ - (void) drawUniverse
 							[self lightForEntity:demoShipMode || drawthing->isSunlit];
 
 							// draw the thing
+							[drawthing setLastDrawCounter: drawCounter];
 							[drawthing drawImmediate:false translucent:false];
 
 							OOGLPopModelView();
@@ -4611,6 +4632,7 @@ - (void) drawUniverse
 							}
 
 							// draw the thing
+							[drawthing setLastDrawCounter: drawCounter];
 							[drawthing drawImmediate:false translucent:true];
 
 							// atmospheric fog

src/SDL/MyOpenGLView.h

@@ -41,7 +41,7 @@ MA 02110-1301, USA.
 
 #define MAX_CLEAR_DEPTH		10000000000.0
 // 10 000 000 km.
-#define INTERMEDIATE_CLEAR_DEPTH		100.0
+#define INTERMEDIATE_CLEAR_DEPTH		50000.0
 // 100 m.