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Merge pull request #23 from GTNewHorizons/feature/renderer-overhaul
Barrel renderer fixes
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src/main/java/mcp/mobius/betterbarrels/client/render/SurfaceItemRenderer.java
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| @@ -0,0 +1,184 @@ | ||
| package mcp.mobius.betterbarrels.client.render; | ||
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| import net.minecraft.block.Block; | ||
| import net.minecraft.client.Minecraft; | ||
| import net.minecraft.client.gui.FontRenderer; | ||
| import net.minecraft.client.renderer.OpenGlHelper; | ||
| import net.minecraft.client.renderer.RenderBlocks; | ||
| import net.minecraft.client.renderer.Tessellator; | ||
| import net.minecraft.client.renderer.entity.RenderItem; | ||
| import net.minecraft.client.renderer.texture.TextureManager; | ||
| import net.minecraft.client.renderer.texture.TextureMap; | ||
| import net.minecraft.item.Item; | ||
| import net.minecraft.item.ItemStack; | ||
| import net.minecraft.util.IIcon; | ||
| import net.minecraft.util.ResourceLocation; | ||
| import org.lwjgl.opengl.GL11; | ||
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| /** | ||
| * This class is specifically designed to render items on top of surfaces in the world with both glint effect and | ||
| * through all render passes with no z-fighting using polygon offset. | ||
| * | ||
| * @author jaquadro | ||
| */ | ||
| public class SurfaceItemRenderer extends RenderItem { | ||
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| private static final ResourceLocation RES_ITEM_GLINT = new ResourceLocation("textures/misc/enchanted_item_glint.png"); | ||
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| private RenderBlocks renderBlocksRi = new RenderBlocks(); | ||
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| @Override | ||
| public byte getMiniBlockCount (ItemStack stack, byte original) { | ||
| return 1; | ||
| } | ||
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| @Override | ||
| public boolean shouldBob () { | ||
| return false; | ||
| } | ||
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| @Override | ||
| public boolean shouldSpreadItems () { | ||
| return false; | ||
| } | ||
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| // The default Mojang code for item render does not handle glinted or multi-pass items gracefully in a non-UI | ||
| // setting. This modified implementation will render these items without unsightly Z-fighting. | ||
| @Override | ||
| public void renderItemIntoGUI (FontRenderer fontRenderer, TextureManager texManager, ItemStack itemStack, int x, int y, boolean renderEffect) { | ||
| if (itemStack.getItemSpriteNumber() == 0 && RenderBlocks.renderItemIn3d(Block.getBlockFromItem(itemStack.getItem()).getRenderType())) { | ||
| renderItemIntoGUIBlock(fontRenderer, texManager, itemStack, x, y, renderEffect); | ||
| return; | ||
| } | ||
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| Item item = itemStack.getItem(); | ||
| int meta = itemStack.getItemDamage(); | ||
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| ResourceLocation loc = itemStack.getItem().requiresMultipleRenderPasses() | ||
| ? (item.getSpriteNumber() == 0 ? TextureMap.locationBlocksTexture : TextureMap.locationItemsTexture) | ||
| : (texManager.getResourceLocation(itemStack.getItemSpriteNumber())); | ||
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| for (int i = 0; i < item.getRenderPasses(meta); ++i) { | ||
| OpenGlHelper.glBlendFunc(770, 771, 1, 0); | ||
| texManager.bindTexture(loc); | ||
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| IIcon icon = itemStack.getItem().requiresMultipleRenderPasses() | ||
| ? item.getIcon(itemStack, i) | ||
| : itemStack.getIconIndex(); | ||
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| if (icon == null) | ||
| continue; | ||
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| int color = itemStack.getItem().getColorFromItemStack(itemStack, i); | ||
| float r = (float)(color >> 16 & 255) / 255.0F; | ||
| float g = (float)(color >> 8 & 255) / 255.0F; | ||
| float b = (float)(color & 255) / 255.0F; | ||
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| if (renderWithColor) | ||
| GL11.glColor4f(r, g, b, 1.0F); | ||
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| GL11.glEnable(GL11.GL_POLYGON_OFFSET_FILL); | ||
| GL11.glPolygonOffset(-1f, -1); | ||
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| GL11.glDisable(GL11.GL_LIGHTING); | ||
| GL11.glEnable(GL11.GL_BLEND); | ||
| GL11.glEnable(GL11.GL_ALPHA_TEST); | ||
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| renderIcon(x, y, icon, 16, 16); | ||
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| GL11.glDisable(GL11.GL_ALPHA_TEST); | ||
| GL11.glDisable(GL11.GL_BLEND); | ||
| GL11.glEnable(GL11.GL_LIGHTING); | ||
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| if (renderEffect && itemStack.hasEffect(i)) | ||
| renderEffect(texManager, x, y); | ||
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| GL11.glDisable(GL11.GL_POLYGON_OFFSET_FILL); | ||
| } | ||
| } | ||
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| @Override | ||
| public void renderEffect (TextureManager manager, int x, int y) { | ||
| GL11.glDepthFunc(GL11.GL_EQUAL); | ||
| GL11.glDisable(GL11.GL_LIGHTING); | ||
| GL11.glDepthMask(false); | ||
| manager.bindTexture(RES_ITEM_GLINT); | ||
| GL11.glEnable(GL11.GL_ALPHA_TEST); | ||
| GL11.glEnable(GL11.GL_BLEND); | ||
| GL11.glColor4f(0.5F, 0.25F, 0.8F, 1.0F); | ||
| renderGlint(x, y, 16, 16); | ||
| GL11.glDepthMask(true); | ||
| GL11.glDisable(GL11.GL_BLEND); | ||
| GL11.glDisable(GL11.GL_ALPHA_TEST); | ||
| GL11.glEnable(GL11.GL_LIGHTING); | ||
| GL11.glDepthFunc(GL11.GL_LEQUAL); | ||
| } | ||
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| private void renderGlint (int x, int y, int w, int h) | ||
| { | ||
| for (int i = 0; i < 2; ++i) | ||
| { | ||
| OpenGlHelper.glBlendFunc(772, 1, 0, 0); | ||
| float uScale = 0.00390625F; | ||
| float vScale = 0.00390625F; | ||
| float u = (Minecraft.getSystemTime() % (3000 + i * 1873)) / (3000.0F + i * 1873) * 256.0F; | ||
| float v = 0.0F; | ||
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| float hScale = (i < 1) ? 4.0F : -1.0F; | ||
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| Tessellator tessellator = Tessellator.instance; | ||
| tessellator.startDrawingQuads(); | ||
| tessellator.addVertexWithUV(x + 0, y + h, 0, (u + (float)h * hScale) * uScale, (v + (float)h) * vScale); | ||
| tessellator.addVertexWithUV(x + w, y + h, 0, (u + (float)w + (float)h * hScale) * uScale, (v + (float)h) * vScale); | ||
| tessellator.addVertexWithUV(x + w, y + 0, 0, (u + (float)w) * uScale, (v + 0.0F) * vScale); | ||
| tessellator.addVertexWithUV(x + 0, y + 0, 0, (u + 0.0F) * uScale, (v + 0.0F) * vScale); | ||
| tessellator.draw(); | ||
| } | ||
| } | ||
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| private void renderItemIntoGUIBlock (FontRenderer fontRenderer, TextureManager texManager, ItemStack itemStack, int x, int y, boolean renderEffect) { | ||
| texManager.bindTexture(TextureMap.locationBlocksTexture); | ||
| Block block = Block.getBlockFromItem(itemStack.getItem()); | ||
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| if (block.getRenderBlockPass() != 0) { | ||
| GL11.glAlphaFunc(GL11.GL_GREATER, 0.1F); | ||
| GL11.glEnable(GL11.GL_BLEND); | ||
| OpenGlHelper.glBlendFunc(770, 771, 1, 0); | ||
| } | ||
| else { | ||
| GL11.glAlphaFunc(GL11.GL_GREATER, 0.5F); | ||
| GL11.glDisable(GL11.GL_BLEND); | ||
| } | ||
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| GL11.glPushMatrix(); | ||
| GL11.glTranslatef(x - 2, y + 3, zLevel - 3); | ||
| GL11.glScalef(10, 10, 10); | ||
| GL11.glTranslatef(1, 0.5f, 1); | ||
| GL11.glScalef(1, 1, -1); | ||
| GL11.glRotatef(210, 1, 0, 0); | ||
| GL11.glRotatef(45, 0, 1, 0); | ||
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| int color = itemStack.getItem().getColorFromItemStack(itemStack, 0); | ||
| float r = (float)(color >> 16 & 255) / 255.0F; | ||
| float g = (float)(color >> 8 & 255) / 255.0F; | ||
| float b = (float)(color & 255) / 255.0F; | ||
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| if (this.renderWithColor) | ||
| GL11.glColor4f(r * 1, g * 1, b * 1, 1.0F); | ||
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| GL11.glRotatef(-90, 0, 1, 0); | ||
| GL11.glEnable(GL11.GL_POLYGON_OFFSET_FILL); | ||
| GL11.glPolygonOffset(-1f, -1f); | ||
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| this.renderBlocksRi.useInventoryTint = this.renderWithColor; | ||
| this.renderBlocksRi.renderBlockAsItem(block, itemStack.getItemDamage(), 1); | ||
| this.renderBlocksRi.useInventoryTint = true; | ||
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| GL11.glDisable(GL11.GL_POLYGON_OFFSET_FILL); | ||
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| if (block.getRenderBlockPass() == 0) | ||
| GL11.glAlphaFunc(GL11.GL_GREATER, 0.1F); | ||
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| GL11.glPopMatrix(); | ||
| } | ||
| } |
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