public void renderItemInFirstPerson(float partialTicks, float prevEquippedProgress, float equippedProgress, ItemStack itemToRender) {
        float f = 1.0F - (prevEquippedProgress + (equippedProgress - prevEquippedProgress) * partialTicks);
        EntityPlayerSP entityPlayerSP = mc.thePlayer;
        float f1 = entityPlayerSP.getSwingProgress(partialTicks);
        float f2 = entityPlayerSP.prevRotationPitch + (entityPlayerSP.rotationPitch - entityPlayerSP.prevRotationPitch) * partialTicks;
        float f3 = entityPlayerSP.prevRotationYaw + (entityPlayerSP.rotationYaw - entityPlayerSP.prevRotationYaw) * partialTicks;
        ((IMixinItemRenderer) parent).callRotateArroundXAndY(f2, f3);
        ((IMixinItemRenderer) parent).callSetLightMapFromPlayer(entityPlayerSP);
        ((IMixinItemRenderer) parent).callRotateWithPlayerRotations(entityPlayerSP, partialTicks);
        GlStateManager.enableRescaleNormal();
        GlStateManager.pushMatrix();

        if (itemToRender != null) {
            if (itemToRender.getItem() == Items.filled_map) {
                ((IMixinItemRenderer) parent).callRenderItemMap(entityPlayerSP, f2, f, f1);
            } else if ((itemToRender.getItem() instanceof ItemSword) && !mc.thePlayer.isBlocking() && Settings.CUSTOM_SWORD_ANIMATION) {
                transformFirstPersonItem(f, f1);
            } else if (entityPlayerSP.getItemInUseCount() > 0) {
                EnumAction enumaction = itemToRender.getItemUseAction();

                switch (enumaction) {
                    case NONE:
                        transformFirstPersonItem(f, 0.0F);
                        break;
                    case EAT:
                    case DRINK:
                        ((IMixinItemRenderer) parent).callPerformDrinking(entityPlayerSP, partialTicks);
                        if (Settings.OLD_EATING) {
                            transformFirstPersonItem(f, f1);
                        } else {
                            transformFirstPersonItem(f, 0.0F);
                        }
                        break;
                    case BLOCK:
                        if (Settings.OLD_BLOCKHIT) {
                            transformFirstPersonItem(f, f1);
                            ((IMixinItemRenderer) parent).callDoBlockTransformations();
                            GlStateManager.scale(0.83f, 0.88f, 0.85f);
                            GlStateManager.translate(-0.3f, 0.1f, 0.0f);
                        } else {
                            transformFirstPersonItem(f, 0f);
                            ((IMixinItemRenderer) parent).callDoBlockTransformations();
                        }
                        break;

                    case BOW:
                        if (Settings.OLD_BOW) {
                            transformFirstPersonItem(f, f1);
                            ((IMixinItemRenderer) parent).callDoBowTransformations(partialTicks, entityPlayerSP);
                            GlStateManager.translate(0.0F, 0.1F, -0.15F);
                        } else {
                            transformFirstPersonItem(f, 0.0F);
                            ((IMixinItemRenderer) parent).callDoBowTransformations(partialTicks, entityPlayerSP);
                        }
                }
            } else {
                ((IMixinItemRenderer) parent).callDoItemUsedTransformations(f1);
                transformFirstPersonItem(f, f1);
            }

            parent.renderItem(entityPlayerSP, itemToRender, ItemCameraTransforms.TransformType.FIRST_PERSON);
        } else if (!entityPlayerSP.isInvisible()) {
            ((IMixinItemRenderer) parent).callRenderPlayerArm(entityPlayerSP, f, f1);
        }

        GlStateManager.popMatrix();
        GlStateManager.disableRescaleNormal();
        RenderHelper.disableStandardItemLighting();
    }