A mod I am working on tries to display mobs that are sneaking up behind you, by showing little versions on the sides of your screen. Here is how it's supposed to work:

The display code shown was copied from ToroCraft's ToroHealth (Source On GitHub) ToroHealth seems to have no problem with this, but whenever the display shows a slime(Or any other partially transparent entity i'm guessing) this happens:

Any idea why or how to fix it? Thanks.

Render Code:

Spoiler

@SubscribeEvent
	public void renderEntityWarnings(RenderGameOverlayEvent.Pre event) {
		EntityPlayer player = Minecraft.getMinecraft().player;
		if (event.getType() == ElementType.CHAT || player == null || player.world == null) return;
		List<Entity> ewl = player.world.getEntitiesWithinAABBExcludingEntity(player, player.getEntityBoundingBox().grow(Config.Warnings.range, 5, Config.Warnings.range));
		for (Entity e : ewl) {
			if (e instanceof EntityLivingBase) {
				EntityLivingBase entity = (EntityLivingBase) e;
				Frustum fr = new Frustum();
				fr.setPosition(player.posX, player.posY, player.posZ);
				if (!fr.isBoundingBoxInFrustum(e.getEntityBoundingBox())) {
					EntityDisplay ed = new EntityDisplay(Minecraft.getMinecraft());
					ed.setEntity(entity);
					ed.setPosition(0, 50);
					ed.draw();
				}
			} else {
				// do dis
			}
		}
	}
	
	public static class EntityDisplay {
		private static final int RENDER_HEIGHT = 30;
		private static final int RENDER_WIDTH = 18;
		private static final int PADDING = 2;
		private static final int WIDTH = 40;
		private static final int HEIGHT = WIDTH;

		private int y;

		private float glX;
		private float glY;

		private EntityLivingBase entity;
		private Entity leashedToEntity;
		private float prevYawOffset;
		private float prevYaw;
		private float prevPitch;
		private float prevYawHead;
		private float prevPrevYahHead;
		private int scale = 1;

		public EntityDisplay(Minecraft mc) {
		}

		public void setPosition(int x, int y) {
			this.y = y;
			glX = (float) x + WIDTH / 2;
			updateScale();
		}

		public void setEntity(EntityLivingBase entity) {
			this.entity = entity;
			updateScale();
		}

		public void draw() {
			try {
				pushEntityLeasedTo();
				pushEntityRotations();
				glDraw();
				popEntityRotations();
				popEntityLeasedTo();
			} catch (Throwable ignore) {
			}
		}

		private void updateScale() {
			if (entity == null) {
				glY = (float) y + HEIGHT - PADDING;
				return;
			}
			int scaleY = MathHelper.ceil(RENDER_HEIGHT / entity.height);
			int scaleX = MathHelper.ceil(RENDER_WIDTH / entity.width);
			scale = Math.min(scaleX, scaleY);
			glY = (float) y + (HEIGHT / 2 + RENDER_HEIGHT / 2);
			//if (entity instanceof EntityGhast) {
			//	glY -= 10;
			//}
		}

		private void glDraw() {
			GlStateManager.enableColorMaterial();
			GlStateManager.pushMatrix();

			GlStateManager.translate(glX, glY, 50.0F);
			GlStateManager.scale((float) (-scale), (float) scale, (float) scale);
			GlStateManager.rotate(180.0F, 0.0F, 0.0F, 1.0F);
			GlStateManager.rotate(135.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(-100.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(0.0f, 1.0F, 0.0F, 0.0F);

			RenderHelper.enableStandardItemLighting();

			GlStateManager.translate(0.0F, 0.0F, 0.0F);
			RenderManager rendermanager = Minecraft.getMinecraft().getRenderManager();
			rendermanager.setPlayerViewY(180.0F);
			rendermanager.setRenderShadow(false);
			rendermanager.renderEntity(entity, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F, false);
			rendermanager.setRenderShadow(true);

			GlStateManager.popMatrix();
			RenderHelper.disableStandardItemLighting();
			GlStateManager.disableRescaleNormal();
			GlStateManager.setActiveTexture(OpenGlHelper.lightmapTexUnit);
			GlStateManager.disableTexture2D();
			GlStateManager.setActiveTexture(OpenGlHelper.defaultTexUnit);
		}

		private void popEntityLeasedTo() {
			if (entity instanceof EntityLiving && leashedToEntity != null) {
				((EntityLiving) entity).setLeashHolder(leashedToEntity, false);
				leashedToEntity = null;
			}
		}

		private void pushEntityLeasedTo() {
			if (entity instanceof EntityLiving) {
				if (((EntityLiving) entity).getLeashed()) {
					leashedToEntity = ((EntityLiving) entity).getLeashHolder();
					((EntityLiving) entity).setLeashHolder(null, false);
				}
			}
		}

		private void popEntityRotations() {
			entity.renderYawOffset = prevYawOffset;
			entity.rotationYaw = prevYaw;
			entity.rotationPitch = prevPitch;
			entity.rotationYawHead = prevYawHead;
			entity.prevRotationYawHead = prevPrevYahHead;
		}

		private void pushEntityRotations() {
			prevYawOffset = entity.renderYawOffset;
			prevYaw = entity.rotationYaw;
			prevPitch = entity.rotationPitch;
			prevYawHead = entity.rotationYawHead;
			prevPrevYahHead = entity.prevRotationYawHead;
			entity.renderYawOffset = 0.0f;
			entity.rotationYaw = 0.0f;
			entity.rotationPitch = 0.0f;
			entity.rotationYawHead = 0.0f;
			entity.prevRotationYawHead = 0.0f;
		}
	}

 

Edit: Happens with wither skeletons too

Edited August 27, 20187 yr by GiantNuker

The slime is likely changing rendering flags and your code doesn't correctly account for it. Namely, slimes are transparent.

13 hours ago, Draco18s said:

The slime is likely changing rendering flags and your code doesn't correctly account for it. Namely, slimes are transparent.

Thank you, I will look into this.

I checked ToroHealth and Can't seem to find anything. The mod does render a skin into the background though.

It uses:

private void drawSkin() {
		if (ConfigurationHandler.skin.equals("NONE")) {
			return;
		}
		
		if (ConfigurationHandler.skin.equals("HEAVY")) {
			mc.getTextureManager().bindTexture(SKIN_HEAVY);
		}else{
			mc.getTextureManager().bindTexture(SKIN_BASIC);
		}
		
		GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
		Gui.drawModalRectWithCustomSizedTexture(screenX - 10, screenY - 10, 0.0f, 0.0f, 160, 60, 160, 60);
	}

I am not very good with OpenGL, but I don't think this has anything. The render entity code is exactly the same, I had something else, but now I'm using the same renderer to try to get rid of this.

Entity render code:

Spoiler

public static class EntityDisplay {
		private static final int RENDER_HEIGHT = 30;
		private static final int RENDER_WIDTH = 18;
		private static final int PADDING = 2;
		private static final int WIDTH = 40;
		private static final int HEIGHT = WIDTH;

		private int y;

		private float glX;
		private float glY;

		private EntityLivingBase entity;
		private Entity leashedToEntity;
		private float prevYawOffset;
		private float prevYaw;
		private float prevPitch;
		private float prevYawHead;
		private float prevPrevYahHead;
		private int scale = 1;

		public EntityDisplay(Minecraft mc) {
		}

		public void setPosition(int x, int y) {
			this.y = y;
			glX = (float) x + WIDTH / 2;
			updateScale();
		}

		public void setEntity(EntityLivingBase entity) {
			this.entity = entity;
			updateScale();
		}

		public void draw() {
			try {
				pushEntityLeasedTo();
				pushEntityRotations();
				glDraw();
				popEntityRotations();
				popEntityLeasedTo();
			} catch (Throwable ignore) {
			}
		}

		private void updateScale() {
			if (entity == null) {
				glY = (float) y + HEIGHT - PADDING;
				return;
			}
			int scaleY = MathHelper.ceil(RENDER_HEIGHT / entity.height);
			int scaleX = MathHelper.ceil(RENDER_WIDTH / entity.width);
			scale = Math.min(scaleX, scaleY);
			glY = (float) y + (HEIGHT / 2 + RENDER_HEIGHT / 2);
			//if (entity instanceof EntityGhast) {
			//	glY -= 10;
			//}
		}

		private void glDraw() {
			GlStateManager.enableColorMaterial();
			GlStateManager.pushMatrix();

			GlStateManager.translate(glX, glY, 50.0F);
			GlStateManager.scale((float) (-scale), (float) scale, (float) scale);
			GlStateManager.rotate(180.0F, 0.0F, 0.0F, 1.0F);
			GlStateManager.rotate(135.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(-100.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(0.0f, 1.0F, 0.0F, 0.0F);

			RenderHelper.enableStandardItemLighting();

			GlStateManager.translate(0.0F, 0.0F, 0.0F);
			RenderManager rendermanager = Minecraft.getMinecraft().getRenderManager();
			rendermanager.setPlayerViewY(180.0F);
			rendermanager.setRenderShadow(false);
			rendermanager.renderEntity(entity, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F, false);
			rendermanager.setRenderShadow(true);

			GlStateManager.popMatrix();
			RenderHelper.disableStandardItemLighting();
			GlStateManager.disableRescaleNormal();
			GlStateManager.setActiveTexture(OpenGlHelper.lightmapTexUnit);
			GlStateManager.disableTexture2D();
			GlStateManager.setActiveTexture(OpenGlHelper.defaultTexUnit);
		}

		private void popEntityLeasedTo() {
			if (entity instanceof EntityLiving && leashedToEntity != null) {
				((EntityLiving) entity).setLeashHolder(leashedToEntity, false);
				leashedToEntity = null;
			}
		}

		private void pushEntityLeasedTo() {
			if (entity instanceof EntityLiving) {
				if (((EntityLiving) entity).getLeashed()) {
					leashedToEntity = ((EntityLiving) entity).getLeashHolder();
					((EntityLiving) entity).setLeashHolder(null, false);
				}
			}
		}

		private void popEntityRotations() {
			entity.renderYawOffset = prevYawOffset;
			entity.rotationYaw = prevYaw;
			entity.rotationPitch = prevPitch;
			entity.rotationYawHead = prevYawHead;
			entity.prevRotationYawHead = prevPrevYahHead;
		}

		private void pushEntityRotations() {
			prevYawOffset = entity.renderYawOffset;
			prevYaw = entity.rotationYaw;
			prevPitch = entity.rotationPitch;
			prevYawHead = entity.rotationYawHead;
			prevPrevYahHead = entity.prevRotationYawHead;
			entity.renderYawOffset = 0.0f;
			entity.rotationYaw = 0.0f;
			entity.rotationPitch = 0.0f;
			entity.rotationYawHead = 0.0f;
			entity.prevRotationYawHead = 0.0f;
		}
	}

 

 

On 8/25/2018 at 11:11 AM, Draco18s said:

The slime is likely changing rendering flags and your code doesn't correctly account for it. Namely, slimes are transparent.

 

13 hours ago, GiantNuker said:

I checked ToroHealth and Can't seem to find anything. The mod does render a skin into the background though.

Have you tried playing around and making sure transparency is off/on and texture2d is off/on? those probably aren't the rendering flags that you want, but their a good start

11 hours ago, Cadiboo said:

 

Have you tried playing around and making sure transparency is off/on and texture2d is off/on? those probably aren't the rendering flags that you want, but their a good start

How would i turn transparency on and off?

 

Also, i think there might be a difference between whatever version had "doRenderEntity" and 1.12.2 "renderEntity" I'm retty sure ToroCraft just hasnt updated the github repositiory. That is the only difference I can see codewise so far.

Oh no! Check this out...It happens with any entity.

That's what happens when you bind a texture and don't rebind what Minecraft was already using.

 

In this case, you bound the font texture (which the FontRenderer class does for you, automatically) during the rendering of non-font UI objects.

52 minutes ago, Draco18s said:

That's what happens when you bind a texture and don't rebind what Minecraft was already using.

 

In this case, you bound the font texture (which the FontRenderer class does for you, automatically) during the rendering of non-font UI objects.

Thank you. How do I rebind the previous texture though?

 

Edit: this stops screen blacking, but still dosent render the transparency:

GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
rendermanager.renderEntity(entity, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F, false);
GL11.glPopAttrib();

Source: http://www.minecraftforge.net/forum/topic/32488-1710-rendering-semi-transparent-mobs/?do=findComment&comment=171749

Rendering issues with this method:

Spoiler

 

Issues:Transparency (See : slime, boots, text, glint)

 

Edited August 26, 20187 yr by GiantNuker

6 hours ago, GiantNuker said:

Thank you. How do I rebind the previous texture though?

 

Edit: this stops screen blacking, but still dosent render the transparency:

GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
rendermanager.renderEntity(entity, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F, false);
GL11.glPopAttrib();

Source: http://www.minecraftforge.net/forum/topic/32488-1710-rendering-semi-transparent-mobs/?do=findComment&comment=171749

Rendering issues with this method:

  Reveal hidden contents

 

Issues:Transparency (See : slime, boots, text, glint)

 

Don’t use GL directly, use GLStateManager

14 hours ago, Cadiboo said:

Don’t use GL directly, use GLStateManager

And how would i do that in this situation?

I am sorry, but I just found out the root cause of my problem.

I used RenderGameOverlay.Pre instead of Post.

 

With a little bit of tweaking, now it works

 

If you would like to use it:

Highlighter[1.0-1.12.2].jar - Download

Highlighter[1.0-1.12.2]-source.jar - Sources

 

Thank you @Draco18s @Cadiboo

3 hours ago, GiantNuker said:

I am sorry, but I just found out the root cause of my problem.

I used RenderGameOverlay.Pre instead of Post.

 

With a little bit of tweaking, now it works

 

If you would like to use it:

Highlighter[1.0-1.12.2].jar - Download

Highlighter[1.0-1.12.2]-source.jar - Sources

 

Thank you @Draco18s @Cadiboo

Great! But make sure you are making GL calls to GLStateManager and not GL11.

https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/modification-development/2231761-opengl-calls-glstatemanager

10 minutes ago, Cadiboo said:

Great! But make sure you are making GL calls to GLStateManager and not GL11.

https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/modification-development/2231761-opengl-calls-glstatemanager

GlStateManager.enableColorMaterial();
			GlStateManager.pushMatrix();

			GlStateManager.translate(glX, glY, 50.0F);
			GlStateManager.scale((float) (-scale * scaleM), (float) scale * scaleM, (float) scale * scaleM);
			GlStateManager.rotate(180.0F, 0.0F, 0.0F, 1.0F);
			GlStateManager.rotate(135.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(-100.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(0.0f, 1.0F, 0.0F, 0.0F);

			RenderHelper.enableStandardItemLighting();

			GlStateManager.translate(0.0F, 0.0F, 0.0F);
			RenderManager rendermanager = Minecraft.getMinecraft().getRenderManager();
			rendermanager.setPlayerViewY(180.0F);
			rendermanager.setRenderShadow(false);
			GlStateManager.pushMatrix();
			GlStateManager.disableLighting();
			OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240f, 240f);
			GlStateManager.popMatrix();
			rendermanager.renderEntity(entity, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F, false);
			GlStateManager.pushMatrix();
			GlStateManager.enableLighting();
			OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240f, 240f);
			GlStateManager.popMatrix();
			rendermanager.setRenderShadow(true);

			GlStateManager.popMatrix();
			RenderHelper.disableStandardItemLighting();
			GlStateManager.disableRescaleNormal();
			GlStateManager.setActiveTexture(OpenGlHelper.lightmapTexUnit);
			//GlStateManager.disableTexture2D();
			GlStateManager.setActiveTexture(OpenGlHelper.defaultTexUnit);

Do i still need the calls to OpenGlHelper?

6 minutes ago, GiantNuker said:

GlStateManager.enableColorMaterial();
			GlStateManager.pushMatrix();

			GlStateManager.translate(glX, glY, 50.0F);
			GlStateManager.scale((float) (-scale * scaleM), (float) scale * scaleM, (float) scale * scaleM);
			GlStateManager.rotate(180.0F, 0.0F, 0.0F, 1.0F);
			GlStateManager.rotate(135.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(-100.0F, 0.0F, 1.0F, 0.0F);
			GlStateManager.rotate(0.0f, 1.0F, 0.0F, 0.0F);

			RenderHelper.enableStandardItemLighting();

			GlStateManager.translate(0.0F, 0.0F, 0.0F);
			RenderManager rendermanager = Minecraft.getMinecraft().getRenderManager();
			rendermanager.setPlayerViewY(180.0F);
			rendermanager.setRenderShadow(false);
			GlStateManager.pushMatrix();
			GlStateManager.disableLighting();
			OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240f, 240f);
			GlStateManager.popMatrix();
			rendermanager.renderEntity(entity, 0.0D, 0.0D, 0.0D, 0.0F, 1.0F, false);
			GlStateManager.pushMatrix();
			GlStateManager.enableLighting();
			OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240f, 240f);
			GlStateManager.popMatrix();
			rendermanager.setRenderShadow(true);

			GlStateManager.popMatrix();
			RenderHelper.disableStandardItemLighting();
			GlStateManager.disableRescaleNormal();
			GlStateManager.setActiveTexture(OpenGlHelper.lightmapTexUnit);
			//GlStateManager.disableTexture2D();
			GlStateManager.setActiveTexture(OpenGlHelper.defaultTexUnit);

Do i still need the calls to OpenGlHelper?

The one that sets a high brightness? Yes if you still want that, otherwise your code looks good but could do with a little bit of cleanup

22 minutes ago, Cadiboo said:

The one that sets a high brightness? Yes if you still want that, otherwise your code looks good but could do with a little bit of cleanup

Thanks @Cadiboo