Re: [osg-users] How to use more than 4 texture units?

2015-06-17 Thread Jannik Heller 
Hi,

I seem to have hit the same problem. Texture slots 0-3 work fine, 4 and up 
don't show.

To reproduce is very simple, you change the osgbillboard example to bind to 
texture slot 4.


Code:

diff --git a/examples/osgbillboard/osgbillboard.cpp 
b/examples/osgbillboard/osgbillboard.cpp
index a6243e8..07e9274 100644
--- a/examples/osgbillboard/osgbillboard.cpp
+++ b/examples/osgbillboard/osgbillboard.cpp
@@ -67,7 +67,7 @@ osg::Drawable* createSquare(const osg::Vec3 corner,const 
osg::Vec3 width,const
 (*tcoords)[1].set(1.0f,0.0f);
 (*tcoords)[2].set(1.0f,1.0f);
 (*tcoords)[3].set(0.0f,1.0f);
-geom-setTexCoordArray(0,tcoords);
+geom-setTexCoordArray(3,tcoords);
 
 geom-addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS,0,4));
 
@@ -76,7 +76,7 @@ osg::Drawable* createSquare(const osg::Vec3 corner,const 
osg::Vec3 width,const
 osg::StateSet* stateset = new osg::StateSet;
 osg::Texture2D* texture = new osg::Texture2D;
 texture-setImage(image);
-
stateset-setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
+
stateset-setTextureAttributeAndModes(3,texture,osg::StateAttribute::ON);
 geom-setStateSet(stateset);
 }
 




I'm starting to think there's an OSG bug. I know that my graphics card is 
capable of handling at least 16 fixed function texture units, because it worked 
fine in my non-OSG based app. I will look more into this and report back.

Cheers,
Jannik

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Re: [osg-users] How to use more than 4 texture units?

2015-06-17 Thread Jannik Heller 
Oops, posted wrong code - that should have been 4 instead of 3, of course.


Code:

diff --git a/examples/osgbillboard/osgbillboard.cpp 
b/examples/osgbillboard/osgbillboard.cpp
index a6243e8..64f893c 100644
--- a/examples/osgbillboard/osgbillboard.cpp
+++ b/examples/osgbillboard/osgbillboard.cpp
@@ -67,7 +67,7 @@ osg::Drawable* createSquare(const osg::Vec3 corner,const 
osg::Vec3 width,const
 (*tcoords)[1].set(1.0f,0.0f);
 (*tcoords)[2].set(1.0f,1.0f);
 (*tcoords)[3].set(0.0f,1.0f);
-geom-setTexCoordArray(0,tcoords);
+geom-setTexCoordArray(4,tcoords);
 
 geom-addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS,0,4));
 
@@ -76,7 +76,7 @@ osg::Drawable* createSquare(const osg::Vec3 corner,const 
osg::Vec3 width,const
 osg::StateSet* stateset = new osg::StateSet;
 osg::Texture2D* texture = new osg::Texture2D;
 texture-setImage(image);
-
stateset-setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
+
stateset-setTextureAttributeAndModes(4,texture,osg::StateAttribute::ON);
 geom-setStateSet(stateset);
 }
 




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Re: [osg-users] How to use more than 4 texture units?

2015-06-17 Thread Farshid Lashkari 
Hi Jannik,

I suspect your driver only supports 4 texture units using the fixed
function. Check the GL_MAX_TEXTURE_UNITS value to verify:

GLint units;
glGetIntegerv(GL_MAX_TEXTURE_UNITS, units);

My GeForce GTX 760 only supports 4 fixed function texture units, but up to
32 units using the shader pipeline. Are you sure the non-OSG based app was
using the fixed function pipeline?

Cheers,
Farshid


On Wed, Jun 17, 2015 at 10:47 AM, Jannik Heller scr...@baseoftrash.de
wrote:

 Oops, posted wrong code - that should have been 4 instead of 3, of course.


 Code:

 diff --git a/examples/osgbillboard/osgbillboard.cpp
 b/examples/osgbillboard/osgbillboard.cpp
 index a6243e8..64f893c 100644
 --- a/examples/osgbillboard/osgbillboard.cpp
 +++ b/examples/osgbillboard/osgbillboard.cpp
 @@ -67,7 +67,7 @@ osg::Drawable* createSquare(const osg::Vec3
 corner,const osg::Vec3 width,const
  (*tcoords)[1].set(1.0f,0.0f);
  (*tcoords)[2].set(1.0f,1.0f);
  (*tcoords)[3].set(0.0f,1.0f);
 -geom-setTexCoordArray(0,tcoords);
 +geom-setTexCoordArray(4,tcoords);

  geom-addPrimitiveSet(new
 osg::DrawArrays(osg::PrimitiveSet::QUADS,0,4));

 @@ -76,7 +76,7 @@ osg::Drawable* createSquare(const osg::Vec3
 corner,const osg::Vec3 width,const
  osg::StateSet* stateset = new osg::StateSet;
  osg::Texture2D* texture = new osg::Texture2D;
  texture-setImage(image);
 -
 stateset-setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
 +
 stateset-setTextureAttributeAndModes(4,texture,osg::StateAttribute::ON);
  geom-setStateSet(stateset);
  }





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Re: [osg-users] How to use more than 4 texture units?

2015-06-17 Thread Jannik Heller 
Hi Farshid,


 Are you sure the non-OSG based app was using the fixed function pipeline?

Ah, that's most definitely it. Yes, I was using shaders before. I totally 
forgot there were separate limits for fixed-function and shader texture units.

Thanks for the help,
Jannik

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Re: [osg-users] How to use more than 4 texture units?

2014-04-17 Thread Robert Osfield 
Hi Hailong,

The OSG itself places no restriction on the number of texture units,
but some OpenGL drivers can do, particularly for the fixed function
pipeline, perhaps you are hitting up against this.  I know that NVIdia
have recently reduced the number of texture units they support using
the fixed function pipeline.

Robert.

On 21 January 2014 14:37, Hailong FU longlong_...@163.com wrote:
 Hi,

  Right now I am texturing a digital surface model using many (more than 4) 
 airborne images, for example I want to texture the 6 facades of a building.
  I am using OSG to do the meshing and texturing. However, I found one object 
 can only show the first 4 image textures, the 5th 6th won't show up. What's 
 the problem when I use more than 4 texture units for one geometry? Could you 
 give some hint please?


 osg::ref_ptrosg::StateSet stateOne = new osg::StateSet();
 stateOne-setDataVariance(osg::Object::DYNAMIC);

 for(int i=0; i imgs;  i++)

 {
 osg::ref_ptrosg::Texture2D texture = new osg::Texture2D;
 texture-setDataVariance(osg::Object::DYNAMIC);

 texture-setImage(img[i]);

 texture-setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_BORDER);
 texture-setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_BORDER);
 texture-setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_BORDER);
 texture-setBorderColor(osg::Vec4d(1,1,1,0));

 osg::ref_ptrosg::TexEnv texenv = new osg::TexEnv;
 texenv-setMode(osg::TexEnv::MODULATE);

 stateOne-setTextureAttribute(i,texenv,osg::StateAttribute::ON);

 texture-setInternalFormatMode(osg::Texture::USE_IMAGE_DATA_FORMAT);
 texture-setResizeNonPowerOfTwoHint(1);

 stateOne-setTextureAttributeAndModes(i,texture,osg::StateAttribute::ON);

 }

 geode-getDrawable(0)-setStateSet(stateOne);
 ...

 Thank you!

 Cheers,
 Hailong

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[osg-users] How to use more than 4 texture units?

2014-02-25 Thread Hailong FU 
Hi,

 Right now I am texturing a digital surface model using many (more than 4) 
airborne images, for example I want to texture the 6 facades of a building.
 I am using OSG to do the meshing and texturing. However, I found one object 
can only show the first 4 image textures, the 5th 6th won't show up. What's the 
problem when I use more than 4 texture units for one geometry? Could you give 
some hint please?

  
osg::ref_ptrosg::StateSet stateOne = new osg::StateSet();
stateOne-setDataVariance(osg::Object::DYNAMIC);

for(int i=0; i imgs;  i++)

{
osg::ref_ptrosg::Texture2D texture = new osg::Texture2D;
texture-setDataVariance(osg::Object::DYNAMIC); 

texture-setImage(img[i]); 

texture-setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_BORDER);
texture-setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_BORDER);
texture-setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_BORDER);
texture-setBorderColor(osg::Vec4d(1,1,1,0));

osg::ref_ptrosg::TexEnv texenv = new osg::TexEnv; 
texenv-setMode(osg::TexEnv::MODULATE); 

stateOne-setTextureAttribute(i,texenv,osg::StateAttribute::ON);

texture-setInternalFormatMode(osg::Texture::USE_IMAGE_DATA_FORMAT);
texture-setResizeNonPowerOfTwoHint(1);

stateOne-setTextureAttributeAndModes(i,texture,osg::StateAttribute::ON);

}

geode-getDrawable(0)-setStateSet(stateOne);
... 

Thank you!

Cheers,
Hailong

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