Program: 157015
Project: 157015
Buggy source:
private void pipeFacadeRenderer(RenderBlocks renderblocks,Block block,PipeRenderState state,int x,int y,int z){
  float facadeThickness=1F / 16F;
  float zFightOffset=1F / 8192F;
  float[][] zeroState=new float[3][2];
  zeroState[0][0]=0.0F - zFightOffset / 2;
  zeroState[0][1]=1.0F + zFightOffset / 2;
  zeroState[1][0]=0.0F - zFightOffset;
  zeroState[1][1]=facadeThickness;
  zeroState[2][0]=0.0F;
  zeroState[2][1]=1.0F;
  for (  Orientations direction : Orientations.dirs()) {
    if (state.facadeMatrix.isConnected(direction)) {
      MinecraftForgeClient.bindTexture(state.facadeMatrix.getTextureFile(direction));
      state.currentTextureIndex=state.facadeMatrix.getTextureIndex(direction);
      if (state.pipeConnectionMatrix.isConnected(direction)) {
        float[][] rotated=deepClone(zeroState);
        rotated[2][0]=0.0F;
        rotated[2][1]=Utils.pipeMinPos;
        rotated[1][0]-=zFightOffset / 2;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
        rotated=deepClone(zeroState);
        rotated[2][0]=Utils.pipeMaxPos;
        rotated[1][0]-=zFightOffset / 2;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
        rotated=deepClone(zeroState);
        rotated[0][0]=0.0F;
        rotated[0][1]=Utils.pipeMinPos;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
        rotated=deepClone(zeroState);
        rotated[0][0]=Utils.pipeMaxPos;
        rotated[0][1]=1F;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
      }
 else {
        float[][] rotated=deepClone(zeroState);
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
      }
    }
  }
  zeroState[0][0]=Utils.pipeMinPos;
  zeroState[0][1]=Utils.pipeMaxPos;
  zeroState[1][0]=facadeThickness;
  zeroState[1][1]=Utils.pipeMinPos;
  zeroState[2][0]=Utils.pipeMinPos;
  zeroState[2][1]=Utils.pipeMaxPos;
  MinecraftForgeClient.bindTexture(DefaultProps.TEXTURE_BLOCKS);
  state.currentTextureIndex=7 * 16 + 13;
  for (  Orientations direction : Orientations.dirs()) {
    if (state.facadeMatrix.isConnected(direction) && !state.pipeConnectionMatrix.isConnected(direction)) {
      float[][] rotated=deepClone(zeroState);
      transform(rotated,direction);
      block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
      renderblocks.renderStandardBlock(block,x,y,z);
    }
  }
}

Fixed version (ground truth):
private void pipeFacadeRenderer(RenderBlocks renderblocks,Block block,PipeRenderState state,int x,int y,int z){
  float facadeThickness=1F / 16F;
  float zFightOffset=1F / 4096F;
  float[][] zeroState=new float[3][2];
  zeroState[0][0]=0.0F - zFightOffset / 2;
  zeroState[0][1]=1.0F + zFightOffset / 2;
  zeroState[1][0]=0.0F - zFightOffset;
  zeroState[1][1]=facadeThickness;
  zeroState[2][0]=0.0F;
  zeroState[2][1]=1.0F;
  for (  Orientations direction : Orientations.dirs()) {
    if (state.facadeMatrix.isConnected(direction)) {
      MinecraftForgeClient.bindTexture(state.facadeMatrix.getTextureFile(direction));
      state.currentTextureIndex=state.facadeMatrix.getTextureIndex(direction);
      if (state.pipeConnectionMatrix.isConnected(direction)) {
        float[][] rotated=deepClone(zeroState);
        rotated[2][0]=0.0F;
        rotated[2][1]=Utils.pipeMinPos;
        rotated[1][0]-=zFightOffset / 2;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
        rotated=deepClone(zeroState);
        rotated[2][0]=Utils.pipeMaxPos;
        rotated[1][0]-=zFightOffset / 2;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
        rotated=deepClone(zeroState);
        rotated[0][0]=0.0F;
        rotated[0][1]=Utils.pipeMinPos;
        rotated[1][1]-=zFightOffset;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
        rotated=deepClone(zeroState);
        rotated[0][0]=Utils.pipeMaxPos;
        rotated[0][1]=1F;
        rotated[1][1]-=zFightOffset;
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
      }
 else {
        float[][] rotated=deepClone(zeroState);
        transform(rotated,direction);
        block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
        renderblocks.renderStandardBlock(block,x,y,z);
      }
    }
  }
  zeroState[0][0]=Utils.pipeMinPos;
  zeroState[0][1]=Utils.pipeMaxPos;
  zeroState[1][0]=facadeThickness;
  zeroState[1][1]=Utils.pipeMinPos;
  zeroState[2][0]=Utils.pipeMinPos;
  zeroState[2][1]=Utils.pipeMaxPos;
  MinecraftForgeClient.bindTexture(DefaultProps.TEXTURE_BLOCKS);
  state.currentTextureIndex=7 * 16 + 13;
  for (  Orientations direction : Orientations.dirs()) {
    if (state.facadeMatrix.isConnected(direction) && !state.pipeConnectionMatrix.isConnected(direction)) {
      float[][] rotated=deepClone(zeroState);
      transform(rotated,direction);
      block.setBlockBounds(rotated[0][0],rotated[1][0],rotated[2][0],rotated[0][1],rotated[1][1],rotated[2][1]);
      renderblocks.renderStandardBlock(block,x,y,z);
    }
  }
}