Thanks EgonOlsen, with your help i was able to get the required results for my project

oh i see, i looked through the debugger its _obj-Color:R/G/B

my logger keeps flooding the console with "Binding texture 0" and "Binding texture 1", even with LL_ERRORS_ONLY
so I cant even see these messages.

I'm building a model viewer where you can change colors for certain parts on the fly, as in using user input.
The model is color coded in the sense that certain mesh parts are one specific color, so im just using crude logic to identify the color,
and use if statements inside the shader to change it to user color, if existing color is within a certain tolerance range.


I now see that the texture swapping solution will be way more elegant.

Also, im assuming if there is any material in the file that is not being used will not be TEXTURED, right ?
that would explain why my total texture count is less than the number of materials in the .mtl file



BTW, your engine is the best I've seen for android. I was able to get it up and running in 1 day. I use AndEngine but its only good for 2D stuff.
Thank you so much for writing this.



here is a sample


// Changing COLORS AT RUNTIME IN THE FRAG SHADER

// If "check" is within a certain tolerance, then we have the correct color that must be replaced.
// "check" is being read from the texture, and compared to the known RGB color "x"

// x is the known value of the color which must be replaced.

bool isWithin(float check, float x, float tol) {
   if(  (check >= (x - tol)) &&
        (check <=(x + tol)))
        return true;
    return false;
}


void main () {
    vec4 printCol;
    vec4 base = texture2D(textureUnit0, TEX0);

    if (isWithin(base.x, mod1.x, modTol) && isWithin(base.y, mod1.y, modTol) && isWithin(base.z, mod1.z, modTol) )
        printCol = vec4(mod1NewColor.xyz, 1);
    else
        printCol = vec4(base.xyz, 1);// myAddColor;// * diffuse;// vDiffuse;

   
    gl_FragColor = printCol;
}

can you also tell me what happens when there are multiple materials ? like for instance this case


//---------------------------------

 Blender MTL File: 'free_car_1_b.blend'
# Material Count: 6

newmtl bodyMat
Ns 96.078431
Ka 0.000000 0.000000 0.000000
Kd 0.005056 0.000000 0.050252
Ks 0.500000 0.500000 0.500000
Ni 1.000000
d 1.000000
illum 2

newmtl glassMat
Ns 96.078431
Ka 0.000000 0.000000 0.000000
Kd 0.640000 0.640000 0.640000
Ks 0.500000 0.500000 0.500000
Ni 1.000000
d 1.000000
illum 2

newmtl metalMat1
Ns 96.078431
Ka 0.000000 0.000000 0.000000
Kd 0.640000 0.640000 0.640000
Ks 0.500000 0.500000 0.500000
Ni 1.000000
d 1.000000
illum 2

newmtl metalMat2
Ns 96.078431
Ka 0.000000 0.000000 0.000000
Kd 0.000000 0.000000 0.000000
Ks 0.500000 0.500000 0.500000
Ni 1.000000
d 1.000000
illum 2
 ... and so on

Here is the example : The color output on the mesh is BLACK.

When i don't use the shader, color of mesh = green which it should be
When i have something like this myObject3D.add(myShader) , i get color = black.

// --- THIS IS THE SUBSET OF MY MTL FILE ------------------------------------------------------

newmtl torsoColor
Ns 96.078431
Ka 0.000000 0.000000 0.000000
Kd 0.296990 0.451769 0.032732
Ks 0.500000 0.500000 0.500000
Ni 1.000000
d 1.000000

// ----------------------------------------------------------------------


// ----- VERTEX


attribute vec4 position;
attribute vec4 color;

varying vec4 myColor;
void main(void)
{
             myColor = color ;


    gl_Position = modelViewProjectionMatrix * position;
}

// --------------- FRAGMENT

varying vec4 myColor;
void main ()
{

 gl_FragColor = vec4(myColor.xyz, 1);

}

Hi all,

Reading an Object3D,
when i render it as it is , the "green" color shows up on the mesh since its coming from the material file, (I loaded from an .obj + .mtl)

When I add a shader, I cant get the correct vertex color in my attribute variable.
The normals come through fine though, using this method.
PLEASE HELP. thanks in advance



// VERTEX SHADER   -----------------------------------------------------------------------

attribute vec4 additionalColor;

attribute vec4 position;
attribute vec3 normal;
attribute vec4 color;

uniform mat4 modelViewMatrix;
uniform mat4 modelViewProjectionMatrix;

varying vec4 myColor;
void main(void)
{

  myColor = color;

  // I also tried this one but neither one works.
  myColor = additionalColor;

  gl_Position = modelViewProjectionMatrix * position;
}


// FRAGMENT SHADER  ------------------------------------------------------------------

precision mediump float;
varying vec4 myColor;

void main ()
{
   gl_FragColor = vec4(myColor.xyz, 1);
}

sadness has befallen me now , .......................

Isn't there a fit-to-screen type thing i can use ? in the camera  ?

I noticed i can calcBoundingBox and setBoundingBox on Object3D, but i cant get the one that's calculated ? did i miss something here

 if i can get that, i can fit the camera somehow
 

Hi

Im serializing stuff on windows and reading it on Android

I serialized in  JPCT 1.15Beta3
I deserialzie in JPCT-AE 1.0 , there is a version mismatch and it wont deserialize Object3D

it throws the exception
java.lang.RuntimeException: [ 1447896135952 ] - ERROR: Can't deserialize object: [ 1447896135950 ] - ERROR: Unsupported version: 2023511133

Please help, i looked for the older version of JPCT but i cant find it anywhere