Fix flickering lightmap by redo lightmap system

src/main/java/com/seibel/lod/core/render/LodRenderer.java

@@ -25,12 +25,14 @@ import java.util.concurrent.TimeUnit;
 
 import com.seibel.lod.core.api.ApiShared;
 import com.seibel.lod.core.logging.ConfigBasedLogger;
+import com.seibel.lod.core.logging.ConfigBasedSpamLogger;
 import com.seibel.lod.core.logging.SpamReducedLogger;
 import com.seibel.lod.core.objects.BoolType;
 import com.seibel.lod.core.objects.Pos2D;
 import com.seibel.lod.core.render.objects.GLState;
 import com.seibel.lod.core.util.*;
 import com.seibel.lod.core.util.gridList.*;
+import com.seibel.lod.core.wrapperInterfaces.misc.ILightMapWrapper;
 import org.apache.logging.log4j.LogManager;
 import org.lwjgl.opengl.GL32;
 
@@ -65,6 +67,8 @@ public class LodRenderer
 	public static final ConfigBasedLogger EVENT_LOGGER = new ConfigBasedLogger(LogManager.getLogger(LodRenderer.class),
 			() -> CONFIG.client().advanced().debugging().debugSwitch().getLogRendererBufferEvent());
 
+	public static ConfigBasedSpamLogger tickLogger = new ConfigBasedSpamLogger(LogManager.getLogger(LodRenderer.class),
+			() -> CONFIG.client().advanced().debugging().debugSwitch().getLogRendererBufferEvent(),1);
 	public static final boolean ENABLE_DRAW_LAG_SPIKE_LOGGING = false;
 	public static final boolean ENABLE_DUMP_GL_STATE = true;
 	public static final long DRAW_LAG_SPIKE_THRESHOLD_NS = TimeUnit.NANOSECONDS.convert(20, TimeUnit.MILLISECONDS);
@@ -136,7 +140,6 @@ public class LodRenderer
 	{
 		lodBufferBuilderFactory = newLodNodeBufferBuilder;
 	}
-	public static SpamReducedLogger tickLogger = new SpamReducedLogger(1);
 
 	/**
 	 * Besides drawing the LODs this method also starts
@@ -285,7 +288,7 @@ public class LodRenderer
 		GL32.glActiveTexture(GL32.GL_TEXTURE0);
 		drawSetActiveTexture.end("drawSetActiveTexture");
 		LagSpikeCatcher drawCalculateParams = new LagSpikeCatcher();
-		LightmapTexture lightmapTexture = new LightmapTexture();
+		//LightmapTexture lightmapTexture = new LightmapTexture();
 		
 		/*---------Get required data--------*/
 		// Get the matrixs for rendering
@@ -311,7 +314,9 @@ public class LodRenderer
 
 		// Note: Since lightmapTexture is changing every frame, it's faster to recreate it than to reuse the old one.
 		LagSpikeCatcher drawFillLightmap = new LagSpikeCatcher();
-		lightmapTexture.fillData(MC_RENDER.getLightmapTextureWidth(), MC_RENDER.getLightmapTextureHeight(), MC_RENDER.getLightmapPixels());
+		ILightMapWrapper lightmap = MC_RENDER.getLightmapWrapper();
+		lightmap.bind();
+		//lightmapTexture.fillData(MC_RENDER.getLightmapTextureWidth(), MC_RENDER.getLightmapTextureHeight(), MC_RENDER.getLightmapPixels());
 		drawFillLightmap.end("drawFillLightmap");
 		drawFillData.end("DrawFillData");
 		//===========//
@@ -364,11 +369,12 @@ public class LodRenderer
 		draw.end("LodDraw");
 		profiler.popPush("LOD cleanup");
 		LagSpikeCatcher drawCleanup = new LagSpikeCatcher();
+		lightmap.unbind();
 		
 		GL32.glBindBuffer(GL32.GL_ARRAY_BUFFER, 0);
 
 		shaderProgram.unbind();
-		lightmapTexture.free();
+		//lightmapTexture.free();
 		GL32.glClear(GL32.GL_DEPTH_BUFFER_BIT);
 
 		currentState.restore();

src/main/java/com/seibel/lod/core/wrapperInterfaces/minecraft/IMinecraftRenderWrapper.java

@@ -32,6 +32,7 @@ import com.seibel.lod.core.wrapperInterfaces.IVersionConstants;
 import com.seibel.lod.core.wrapperInterfaces.IWrapperFactory;
 import com.seibel.lod.core.wrapperInterfaces.block.AbstractBlockPosWrapper;
 import com.seibel.lod.core.wrapperInterfaces.chunk.AbstractChunkPosWrapper;
+import com.seibel.lod.core.wrapperInterfaces.misc.ILightMapWrapper;
 import com.seibel.lod.core.wrapperInterfaces.modAccessor.ISodiumAccessor;
 import com.seibel.lod.core.wrapperInterfaces.world.IWorldWrapper;
 
@@ -133,6 +134,8 @@ public interface IMinecraftRenderWrapper extends IBindable
 	/** @returns null if there was a issue getting the lightmap */
 	int[] getLightmapPixels();
 
+	ILightMapWrapper getLightmapWrapper();
+
 	/** @returns -1 if there was an issue getting the lightmap */
 	int getLightmapTextureHeight();
 	/** @returns -1 if there was an issue getting the lightmap */

src/main/java/com/seibel/lod/core/wrapperInterfaces/misc/ILightMapWrapper.java

@@ -28,4 +28,8 @@ import com.seibel.lod.core.handlers.dependencyInjection.IBindable;
 public interface ILightMapWrapper extends IBindable
 {
 	int getLightValue(int skyLight, int blockLight);
+
+	// Returns the binded texture position
+	int bind();
+	void unbind();
 }

src/main/resources/shaders/standard.vert

@@ -29,8 +29,12 @@ void main()
     vertexWorldPos = vPosition.xyz + modelOffset;
     vertexYPos = vPosition.y + worldYOffset;
 
-	float light = (vPosition.a+0.5) / 256.0;
-	vertexColor = color * texture(lightMap, vec2(light,0.5));
+    float delta = 0.5/16.0;
+
+	float light = (vPosition.a) / 16.0;
+	float partLight = modf(light, light);
+	light = light / 16.0;
+	vertexColor = color * texture(lightMap, vec2(light+delta, partLight+delta));
 
     gl_Position = combinedMatrix * vec4(vertexWorldPos, 1.0);
 }