Hi,
i managed to reproduce the problem. And i even used another much simpler
shader. This might tell us that the problem is not located in my shaders.
Code:
#include <osg/Group>
#include <osg/Geode>
#include <osg/ShapeDrawable>
#include <osg/Node>
#include <osgViewer/Viewer>
#include <osg/Texture2DArray>
#include <osgDB/ReadFile>
#include <string>
using namespace osg;
void applyShader(Geode* geode)
{
ref_ptr<Program> program = new Program;
program->setName("TexturesTest");
ref_ptr<Shader> vertObj = new Shader(Shader::VERTEX);
ref_ptr<Shader> fragObj = new Shader(Shader::FRAGMENT);
program->addShader(vertObj.get());
program->addShader(fragObj.get());
ref_ptr<StateSet> stateSet = new osg::StateSet;
ref_ptr<Uniform> texturesUniform = new
Uniform(Uniform::SAMPLER_2D_ARRAY, "textures", 0);
stateSet->addUniform(texturesUniform.get());
stateSet->setAttributeAndModes(program.get(), StateAttribute::ON);
ref_ptr<Texture2DArray> textureArray = new Texture2DArray;
textureArray->setFilter(osg::Texture2DArray::MIN_FILTER,
osg::Texture2DArray::NEAREST);
textureArray->setFilter(osg::Texture2DArray::MAG_FILTER,
osg::Texture2DArray::NEAREST);
textureArray->setWrap(osg::Texture::WRAP_S,
osg::Texture::CLAMP_TO_BORDER);
textureArray->setWrap(osg::Texture::WRAP_T,
osg::Texture::CLAMP_TO_BORDER);
textureArray->setWrap(osg::Texture::WRAP_R,
osg::Texture::CLAMP_TO_BORDER);
textureArray->setTextureDepth(2);
Image* image = osgDB::readImageFile("src/foo2.jpg");
textureArray->setImage(0, image);
textureArray->setImage(1, image);
stateSet->setTextureAttribute(0, textureArray.get(),
osg::StateAttribute::ON);
std::string vertSource =
"void main()"
"{"
"gl_TexCoord[0].st = gl_MultiTexCoord0.st;"
"gl_Position = ftransform();"
"}";
vertObj->setShaderSource(vertSource);
std::string fragSource =
"#version 120\n"
"#extension GL_EXT_gpu_shader4 : enable\n"
""
"uniform sampler2DArray textures;"
""
"void main()"
"{"
"gl_FragColor = texture2DArray(textures,
vec3(gl_TexCoord[0].xy*vec2(1.5,1.5), 0));"
"}";
fragObj->setShaderSource(fragSource);
geode->setStateSet(stateSet.get());
}
int main(int argc, char** argv)
{
setNotifyLevel(osg::DEBUG_INFO);
// Create a cube
ref_ptr<Group> rootNode = new Group;
Box* cube = new Box(Vec3(0,0,0), 1.0f);
ShapeDrawable* drawable = new ShapeDrawable(cube);
Geode* geode = new Geode();
geode->addDrawable(drawable);
rootNode->addChild(geode);
// Apply our shader to this cube
applyShader(geode);
osgViewer::Viewer viewer;
viewer.setSceneData(rootNode.get());
return viewer.run();
}
http://www.jotschi.de/download/osg/Texture2DArrayClampingExample.cpp
I resized the texture coords so that you can see that there is no clamping.
Thank you!
Cheers,
Johannes
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=17977#17977
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