Program: 156478
Project: 156478
Buggy source:
static void renderFluidPipe(Pipe<PipeTransportFluids> pipe,double x,double y,double z){
  PipeTransportFluids trans=pipe.transport;
  boolean needsRender=false;
  FluidRenderData renderData=trans.renderCache;
  for (int i=0; i < 7; ++i) {
    if (renderData.amount[i] > 0) {
      needsRender=true;
      break;
    }
  }
  if (!needsRender) {
    return;
  }
  GL11.glPushMatrix();
  GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
  GlStateManager.enableCull();
  GlStateManager.disableLighting();
  GlStateManager.enableBlend();
  GlStateManager.blendFunc(GL11.GL_SRC_ALPHA,GL11.GL_ONE_MINUS_SRC_ALPHA);
  GL11.glTranslatef((float)x,(float)y,(float)z);
  DisplayFluidList dfl=getDisplayFluidList(renderData.fluidID);
  if (dfl != null) {
    long ms=System.currentTimeMillis();
    long diff=ms - trans.clientLastDisplayTime;
    if (trans.clientLastDisplayTime == 0 || diff <= 0) {
      diff=1;
    }
    trans.clientLastDisplayTime=ms;
    TextureAtlasSprite sprite=FluidRenderer.getFluidTexture(FluidRegistry.getFluid(renderData.fluidID),FluidType.STILL);
    RenderUtils.setGLColorFromInt(renderData.color);
    Minecraft.getMinecraft().getTextureManager().bindTexture(TextureMap.locationBlocksTexture);
    boolean above=renderData.amount[EnumFacing.UP.ordinal()] > 0;
    boolean sides=false;
    for (    EnumFacing connection : EnumFacing.VALUES) {
      float amount=renderData.amount[connection.ordinal()] / (float)trans.getCapacity();
      if (amount > 0) {
        int stage=(int)(amount * (DISPLAY_STAGES - 1));
        if (stage >= DISPLAY_STAGES)         stage=DISPLAY_STAGES - 1;
        sides=true;
        GL11.glPushMatrix();
        GL11.glCallList(dfl.sideFaces[stage][connection.ordinal()]);
        GL11.glPopMatrix();
      }
    }
    if (above) {
      float amount=renderData.amount[6] / (float)trans.getCapacity();
      if (amount > 0) {
        int stage=(int)(amount * (DISPLAY_STAGES - 1));
        if (stage >= DISPLAY_STAGES)         stage=DISPLAY_STAGES - 1;
        GL11.glPushMatrix();
        GL11.glCallList(dfl.centerFacesVertical[stage]);
        GL11.glPopMatrix();
      }
    }
    if (sides) {
      float amount=renderData.amount[6] / (float)trans.getCapacity();
      if (amount > 0) {
        int stage=(int)(amount * (DISPLAY_STAGES - 1));
        if (stage >= DISPLAY_STAGES)         stage=DISPLAY_STAGES - 1;
        GL11.glPushMatrix();
        GL11.glCallList(dfl.centerFaces[stage]);
        GL11.glPopMatrix();
      }
    }
  }
  GlStateManager.color(1,1,1,1);
  GlStateManager.enableLighting();
  GlStateManager.disableBlend();
  GlStateManager.disableCull();
  GL11.glPopAttrib();
  GL11.glPopMatrix();
}

Fixed version (ground truth):
static void renderFluidPipe(Pipe<PipeTransportFluids> pipe,double x,double y,double z){
  PipeTransportFluids trans=pipe.transport;
  boolean needsRender=false;
  FluidRenderData renderData=trans.renderCache;
  for (int i=0; i < 7; ++i) {
    if (renderData.amount[i] > 0) {
      needsRender=true;
      break;
    }
  }
  if (!needsRender) {
    return;
  }
  GL11.glPushMatrix();
  GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
  GlStateManager.enableCull();
  GlStateManager.disableLighting();
  GlStateManager.enableBlend();
  GlStateManager.blendFunc(GL11.GL_SRC_ALPHA,GL11.GL_ONE_MINUS_SRC_ALPHA);
  GL11.glTranslatef((float)x,(float)y,(float)z);
  DisplayFluidList dfl=getDisplayFluidList(renderData.fluidID);
  if (dfl != null) {
    long ms=System.currentTimeMillis();
    long diff=ms - trans.clientLastDisplayTime;
    if (trans.clientLastDisplayTime == 0 || diff <= 0) {
      diff=1;
    }
    trans.clientLastDisplayTime=ms;
    RenderUtils.setGLColorFromInt(-1);
    Minecraft.getMinecraft().getTextureManager().bindTexture(TextureMap.locationBlocksTexture);
    boolean above=renderData.amount[EnumFacing.UP.ordinal()] > 0;
    boolean sides=false;
    for (    EnumFacing connection : EnumFacing.VALUES) {
      float amount=renderData.amount[connection.ordinal()] / (float)trans.getCapacity();
      if (amount > 0) {
        int stage=(int)(amount * (DISPLAY_STAGES - 1));
        if (stage >= DISPLAY_STAGES)         stage=DISPLAY_STAGES - 1;
        sides=true;
        GL11.glPushMatrix();
        GL11.glCallList(dfl.sideFaces[stage][connection.ordinal()]);
        GL11.glPopMatrix();
      }
    }
    if (above) {
      float amount=renderData.amount[6] / (float)trans.getCapacity();
      if (amount > 0) {
        int stage=(int)(amount * (DISPLAY_STAGES - 1));
        if (stage >= DISPLAY_STAGES)         stage=DISPLAY_STAGES - 1;
        GL11.glPushMatrix();
        GL11.glCallList(dfl.centerFacesVertical[stage]);
        GL11.glPopMatrix();
      }
    }
    if (sides) {
      float amount=renderData.amount[6] / (float)trans.getCapacity();
      if (amount > 0) {
        int stage=(int)(amount * (DISPLAY_STAGES - 1));
        if (stage >= DISPLAY_STAGES)         stage=DISPLAY_STAGES - 1;
        GL11.glPushMatrix();
        GL11.glCallList(dfl.centerFaces[stage]);
        GL11.glPopMatrix();
      }
    }
  }
  GlStateManager.color(1,1,1,1);
  GlStateManager.enableLighting();
  GlStateManager.disableBlend();
  GlStateManager.disableCull();
  GL11.glPopAttrib();
  GL11.glPopMatrix();
}