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sspboyd
sspboyd

What does the console warning "Adding same texture twice" mean?

in Core Library Questions  •  11 months ago  
I am working on a sketch using the OpenGL render mode and I am getting an error "Adding same texture twice" and I'm trying to figure out what that means. 

I looked it up in the source code and it is generated by a function called  createTextureObject. Anyone know what the significance of this message is?
Copy code
  1. // Texture Objects -----------------------------------------------------------

    protected int createTextureObject(int context) {
    deleteFinalizedTextureObjects();

    int[] temp = new int[1];
    pgl.genTextures(1, temp, 0);
    int id = temp[0];

    GLResource res = new GLResource(id, context);

    if (glTextureObjects.containsKey(res)) {
    showWarning("Adding same texture twice");
    } else {
    glTextureObjects.put(res, false);
    }

    return id;
    }


Here's the code I'm running that's generating the warning:
Copy code
  2. import processing.opengl.*;

  4. //Declare Globals
  5. float PHI = 0.618033989;

  7. int rotationMode = 0;
  8. // 0 = rotate in 90deg increments
  9. // 1 = fine increments (cn.val * TWO_PI)

  11. int xRes, yRes;
  12. float cellH, cellW;

  14. PImage src;
  15. float imgTileW;
  16. float imgTileH;

  18. Node[] nodeField;

  20. void setup() {
  21.   background(255);
  22.   size(1200, 800, OPENGL);
  23.   smooth();
  24.   colorMode(RGB, 255, 255, 255, 255);
  25.   xRes = 30;
  26.   yRes = 20;

  28.   cellH = height/yRes;
  29.   cellW = width/xRes;

  31.   src = loadImage("andrew.jpeg");
  32.   imgTileW = src.width/xRes;
  33.   imgTileH = src.height/yRes;

  35.   nodeField = new Node[xRes * yRes];

  37.   for (int i=0; i < nodeField.length; i++) {
  38.     Node n = new Node();

  40.     n.gridLoc.x = i % xRes;
  41.     n.gridLoc.y = floor(i / xRes);

  43.     n.loc.x = n.gridLoc.x * cellW;
  44.     n.loc.y = n.gridLoc.y * cellH;
  45.     
  46.     nodeField[i] = n;
  47.   }
  48. }

  50. void draw() {
  51.    background(255);

  53.   for (Node n : nodeField) {
  54.     n.val = noise((n.gridLoc.x  + frameCount/10) * 0.05, (n.gridLoc.y) * .05);
  55.   }
  56.   for (int i=0; i < nodeField.length; i++) {
  57.     Node cn = nodeField[i];
  58.     fill(0);
  59.     noStroke();
  60.     smooth();

  62.     pushMatrix();
  63.     translate(cn.loc.x + (cellW/2), cn.loc.y + (cellH/2));
  64.     if (rotationMode == 0) {
  65.       if (cn.val < 0.25) {
  66.         rotate(0);
  67.       }
  68.       else if (cn.val > 0.25 && cn.val < 0.5) {
  69.         rotate(PI/2);
  70.       }
  71.       else if (cn.val > 0.5 && cn.val < 0.75) {
  72.         rotate(PI);
  73.       }
  74.       else if (cn.val > 0.75) {
  75.         rotate(PI/2+PI);
  76.       }
  77.     }
  78.     else if (rotationMode == 1) {
  79.       rotate(cn.val * TWO_PI);
  80.       }

  82.       PImage tile = src.get(int(cn.gridLoc.x * imgTileW), int(cn.gridLoc.y * imgTileH), int(imgTileW), int(imgTileH));
  83.     image(tile, -cellW/2, -cellH/2, cellW, cellH); 
  84.     popMatrix();
  85.   }
  86.  }


  89. class Node {
  90.   PVector loc = new PVector();
  91.   float val;
  92.   PVector gridLoc = new PVector();
  93. }

Replies(1)

Chrisir
Chrisir

Re: What does the console warning "Adding same texture twice" mean?

11 months ago
line 82 is in a for loop thus you load tile twice.

do it before the loop?

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