Remove all calls to GlStateManager.pushAttrib() and pullAttrib() and a few other tweaks to gl calls, fixes #12, #46 and #47

src/main/java/electroblob/wizardry/client/GuiArcaneWorkbench.java

@@ -80,8 +80,6 @@ public class GuiArcaneWorkbench extends GuiContainer {
 	@Override
 	public void drawGuiContainerBackgroundLayer(float f, int mouseX, int mouseY){
 
-		GlStateManager.pushAttrib();
-
 		GlStateManager.color(1F, 1F, 1F, 1F);
 		Minecraft.getMinecraft().renderEngine.bindTexture(texture);
 
@@ -152,8 +150,6 @@ public class GuiArcaneWorkbench extends GuiContainer {
 		// Fixes the bug that caused the slot hightlight to render opaque. I don't know why it works, it just works!
 		GlStateManager.disableBlend();
 		GlStateManager.enableAlpha();
-
-		GlStateManager.popAttrib();
 	}
 
 	@Override

src/main/java/electroblob/wizardry/client/GuiSpellDisplay.java

@@ -122,8 +122,6 @@ public class GuiSpellDisplay extends Gui {
 
 		}else if(event.getType() == RenderGameOverlayEvent.ElementType.HOTBAR){
 
-			GlStateManager.pushAttrib();
-
 			GlStateManager.enableBlend();
 			GlStateManager.blendFunc(SourceFactor.SRC_ALPHA, DestFactor.ONE_MINUS_SRC_ALPHA);
 			GlStateManager.color(1, 1, 1);
@@ -147,7 +145,7 @@ public class GuiSpellDisplay extends Gui {
 
 			WizardryUtilities.drawTexturedRect(mirror ? left + 94 : left + 2, top + 2, 0, 0, 32, 32, 32, 32);
 			
-			GlStateManager.popAttrib();
+			// Blend needs to be left enabled here because otherwise the hotbar becomes opaque
 		}
 	}
 

src/main/java/electroblob/wizardry/client/particle/ParticleCustomTexture.java

@@ -143,7 +143,6 @@ public abstract class ParticleCustomTexture extends Particle {
 			float rotationYZ, float rotationXY, float rotationXZ){
 		
 		GlStateManager.pushMatrix();
-		GlStateManager.pushAttrib();
 
 		this.applyGLStateChanges();
 
@@ -193,7 +192,6 @@ public abstract class ParticleCustomTexture extends Particle {
 
 		this.undoGLStateChanges();
 
-		GlStateManager.popAttrib();
 		GlStateManager.popMatrix();
 
 	}