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  TexCoordGeneration planes  (Read 1829 times)
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Offline ewills

Junior Member




Java skeletal animation systems rock!
« Posted 2005-05-24 18:29:30 »
I'm having trouble getting the planes in TexCoordGeneration to have an effect on the actual texture coordinate generation.  I am generating 2D tex coords for a sphere, and have tried many combination of S and T planes, but the resulting tex coords do not seem to vary as a function of the planes.  Has anyone else had a similar experience?  I don't see any problems in the JOGL code...
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #1 - Posted 2005-05-25 12:33:50 »
Out of curiosity, why not just use the GeoSphere (or Sphere) primitives (passing in GeometryArray.TEXTURE_COORDINATE_2)?

I believe that generates quite good texture coordinates.

Regarding your actual question, I'm afraid I havn't used it so I'm not much help.  Hopefully someone else might be able to shed some light if the alternative solution is no good.

Cheers,

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline ewills

Junior Member




Java skeletal animation systems rock!
« Reply #2 - Posted 2005-05-26 16:31:46 »
The Sphere was just an example.  I can generate texture coordinates for an arbitrary object just fine.  In general, I want to change the orientation of a texture relative to an object (which wouldn't really matter for a Sphere anyway).  I just realized that I can use the texture transform.  I'll try that Smiley  It is curious that changing the tex coord generation planes doesn't seem to have any effect though.
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Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #3 - Posted 2005-05-29 05:07:18 »
Is this problem relating to the bug Matthais reported in Issue 91?

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline ewills

Junior Member




Java skeletal animation systems rock!
« Reply #4 - Posted 2005-06-03 00:43:06 »
Yes!  I just updated from CVS and can now adjust the tex coord generation planes!  Thanks Will and Matthais!
Offline tiomemo

JGO Visitor
« Reply #5 - Posted 2006-07-23 19:23:30 »
I'm having a similar problem with TexCoordGeneration.

How can I download the patch you were talking about?

And about this topic I have another question :

is there any way to normalize the vertex mapped coordinates between 0 and 1?

bye!
Offline cylab

JGO Knight


Medals: 30
« Reply #6 - Posted 2006-09-28 23:17:32 »
I just hit the same problem: the bug reappeared in the JSR renderer. I just copied the fixes over from the lwjgl renderer.

Here is the patch:
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<     
---
> 
>     private FloatBuffer tmpPlaneBuffer = BufferUtil.newFloatBuffer(4);
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<     
---
> 
>     private void copyPlaneToFloatBuffer(FloatBuffer planeBuf, Vector4f plane) {
>         planeBuf.put(plane.x);
>         planeBuf.put(plane.y);
>         planeBuf.put(plane.z);
>         planeBuf.put(plane.w);
>         planeBuf.flip();
>     }
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<         //float[] plane = null;
<         FloatBuffer planeBuffer = null;
---
>         int glPlaneName = GL.GL_EYE_PLANE;
>         FloatBuffer planeBuf = null;
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<                 //plane = new float[4];
<                 planeBuffer = BufferUtil.newFloatBuffer(4);
---
>                 glPlaneName = GL.GL_OBJECT_PLANE;
>                 planeBuf = tmpPlaneBuffer;
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<                 //plane = new float[4];
<                 planeBuffer = BufferUtil.newFloatBuffer(4);
---
>                 glPlaneName = GL.GL_EYE_PLANE;
>                 planeBuf = tmpPlaneBuffer;
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<       
---
> 
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<               if (planeBuffer != null) {
<                   Vector4f plane = texGen.getPlaneS();
<                   planeBuffer.put(plane.x);
<                   planeBuffer.put(plane.y);
<                   planeBuffer.put(plane.z);
<                   planeBuffer.put(plane.w);
<                   planeBuffer.rewind();
<                   //texGen.getPlaneS().get(plane);
<                   gl.glTexGenfv(GL.GL_S, glGenMode, planeBuffer);
---
>               if (planeBuf != null) {
>                   copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneS());
>                   gl.glTexGenfv(GL.GL_S, glPlaneName, planeBuf);
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<               
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<                if (planeBuffer != null) {
<                    Vector4f plane = texGen.getPlaneS();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_S, glGenMode, planeBuffer);
<                    plane = texGen.getPlaneT();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_T, glGenMode, planeBuffer);
---
>                 if (planeBuf != null) {
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneS());
>                     gl.glTexGenfv(GL.GL_S, glPlaneName, planeBuf);
> 
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneT());
>                     gl.glTexGenfv(GL.GL_T, glPlaneName, planeBuf);
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<                
---
> 
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<                if (planeBuffer != null) {
<                    Vector4f plane = texGen.getPlaneS();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_S, glGenMode, planeBuffer);
<                    plane = texGen.getPlaneT();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_T, glGenMode, planeBuffer);
<                    plane = texGen.getPlaneR();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_R, glGenMode, planeBuffer);
<                    //texGen.getPlaneR().get(plane);
<                    //  gl.glTexGenfv(GL.GL_R, glGenMode, plane);
---
>                 if (planeBuf != null) {
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneS());
>                     gl.glTexGenfv(GL.GL_S, glPlaneName, planeBuf);
> 
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneT());
>                     gl.glTexGenfv(GL.GL_T, glPlaneName, planeBuf);
> 
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneR());
>                     gl.glTexGenfv(GL.GL_R, glPlaneName, planeBuf);
258d234
<                
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<                if (planeBuffer != null) {
<                    Vector4f plane = texGen.getPlaneS();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_S, glGenMode, planeBuffer);
<                    plane = texGen.getPlaneT();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_T, glGenMode, planeBuffer);
<                    plane = texGen.getPlaneR();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_R, glGenMode, planeBuffer);
<                    plane = texGen.getPlaneQ();
<                    planeBuffer.put(plane.x);
<                    planeBuffer.put(plane.y);
<                    planeBuffer.put(plane.z);
<                    planeBuffer.put(plane.w);
<                    planeBuffer.rewind();
<                    gl.glTexGenfv(GL.GL_Q, glGenMode, planeBuffer);
---
>                 if (planeBuf != null) {
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneS());
>                     gl.glTexGenfv(GL.GL_S, glPlaneName, planeBuf);
> 
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneT());
>                     gl.glTexGenfv(GL.GL_T, glPlaneName, planeBuf);
> 
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneR());
>                     gl.glTexGenfv(GL.GL_R, glPlaneName, planeBuf);
> 
>                     copyPlaneToFloatBuffer(planeBuf, texGen.getPlaneQ());
>                     gl.glTexGenfv(GL.GL_Q, glPlaneName, planeBuf);


@Marvin, @Amos, @Will
You have to incorporate this patch, since I don't have write access.
However, do you have any objections to grant CVS write access to me? Only for fixing bugs like this while toying around with the Terrain code.

Mathias
Mathias - I Know What [you] Did Last Summer!
Offline Marvin Fröhlich

Senior Member




May the 4th, be with you...
« Reply #7 - Posted 2006-09-29 01:54:39 »
I guess you tried it out, did you? Since jogl doesn't work with float buffers but with floats, I suspect it won't work this way.

Is is the CanvasPeerImpl file you're talking about?

Quote from: cylab on 2006-09-28 23:17:32
@Marvin, @Amos, @Will
You have to incorporate this patch, since I don't have write access.
However, do you have any objections to grant CVS write access to me? Only for fixing bugs like this while toying around with the Terrain code.

Since this is a core related fix, you'll have to wait for Will, to ask him for dev-role-granting. Or you can jaut mail him. Do you have his mail address? (the one in his profile is incorrect). Even if I wouldn't object, I don't have a vote as long has we still stay on dev.java.net Sad.

Marvin
Offline cylab

JGO Knight


Medals: 30
« Reply #8 - Posted 2006-09-29 08:34:00 »
Quote from: Marvin Fröhlich on 2006-09-29 01:54:39
I guess you tried it out, did you?
Sure  Cool

Quote from: Marvin Fröhlich on 2006-09-29 01:54:39
Since jogl doesn't work with float buffers but with floats, I suspect it won't work this way.
Where do you get that from? Buffers just work fine in the JSR version, but you have to rewind or flip the buffer before passing it to JOGL.

Quote from: Marvin Fröhlich on 2006-09-29 01:54:39
Is is the CanvasPeerImpl file you're talking about?
Sorry for forgetting that. It's ShapeAtomPeer.

Quote from: Marvin Fröhlich on 2006-09-29 01:54:39
Quote from: cylab on 2006-09-28 23:17:32
@Marvin, @Amos, @Will
You have to incorporate this patch, since I don't have write access.
However, do you have any objections to grant CVS write access to me? Only for fixing bugs like this while toying around with the Terrain code.

Since this is a core related fix, you'll have to wait for Will, to ask him for dev-role-granting. Or you can jaut mail him. Do you have his mail address? (the one in his profile is incorrect). Even if I wouldn't object, I don't have a vote as long has we still stay on dev.java.net Sad.
Ok, I will write WIll a PM and have to wait...
Mathias - I Know What [you] Did Last Summer!
Offline Amos Wenger

Senior Member




Everything's possible, but not everything's fun...
« Reply #9 - Posted 2006-09-29 16:38:03 »
Be it blessed, the day we're on sourceforge. Then we could grant you fifty times the core CVS access, if you wanted to  Grin Grin Grin
"Once you start working on something, don't be afraid of failure and don't abandon it. People who work sincerely are the happiest"
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