Jump to content

OpenGL GUI item rendering problem [Solved]


TheNuclearDuck
 Share

Recommended Posts

I'm working on my WallJump mod, and I've noticed that when you attempt to render a block onto a GUI using the following:

renderItemIntoGUI(FontRenderer par1FontRenderer, RenderEngine par2RenderEngine, ItemStack par3ItemStack, int par4, int par5)

that this sometimes messes up OpenGL colours and when you proceed to do the same again, the colour of the block is incorrect. For example, when you render an item then a block, the block will be slightly too dark, colours of things like grass will not show, etc.

 

Does anyone know why this happens, or how to fix it?

 

Here's an example of what I mean:

CSUPnrI.png

 

Any help is much appreciated.

Link to comment
Share on other sites

Hey there,

 

Anyone? Surely somebody must be experiencesd with how OpenGL messes this up.

;)

 

Is it possible to see more your source code for the rendering/gui class? I do remember seeing something similar to this a while ago.

 

-hydroflame, author FRev-

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

Link to comment
Share on other sites

Well, here's the loop I'm using to draw all the blocks:

        	RenderItem renderItem = new RenderItem();
        	String[] i = blocks.split(";");
        	for(int x = 0; x < i.length; x++)
        	{
        		if(i[x].contains("m"))
        		{
        			String[] z = i[x].split("m");
        			renderItem.renderItemAndEffectIntoGUI(this.fontRenderer, this.mc.renderEngine, new ItemStack(Integer.parseInt(z[0]), 1, Integer.parseInt(z[1])), this.width / 2 -75 + ((x %  * 19), this.height / 4 + 185 - 16 + ((x /  * 20));
        		} else
        		{
        			renderItem.renderItemIntoGUI(this.fontRenderer, this.mc.renderEngine, new ItemStack(Integer.parseInt(i[x]), 1, 0), this.width / 2 -75 + ((x %  * 19), this.height / 4 + 185 - 16 + ((x /  * 20));
        		}
        	}

Does this help at all?

Link to comment
Share on other sites

Hey again,

 

like i said it's been a while since i have done this. But i found in the vanilla src somethign similar.

My hypothesis is that lighting is enabled and rendering a block versus an item affect it in different ways such that is screws up after rendering a item.

Unfortuntely I'm not near a place where i can work on this and find out whats Happening really but for now i can tell you this

 

Look at the class "GuiContainer" and look at the methods "drawScreen" and "drawItemStack"

 

specially these lines in "drawScreen":

RenderHelper.disableStandardItemLighting();
GL11.glDisable(GL11.GL_LIGHTING);
GL11.glDisable(GL11.GL_DEPTH_TEST);
super.drawScreen(par1, par2, par3);
RenderHelper.enableGUIStandardItemLighting();

and near the end :

GL11.glEnable(GL11.GL_LIGHTING);
GL11.glEnable(GL11.GL_DEPTH_TEST);
RenderHelper.enableStandardItemLighting();

 

it seems that notch disable the lighting when rendering items (dont forget to re-enable it after)

 

if that's not enough. May i suggest that I take a look at it later?

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.