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From Ulrich Hertlein, check for max 3d texture size into the osgtexture demo.

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Robert Osfield
2002-09-04 10:51:33 +00:00
parent f574d0dd68
commit 9bab7a181f
1 changed files with 10 additions and 5 deletions
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15
src/Demos/osgtexture3D/osgtexture3D.cpp
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@@ -48,17 +48,22 @@ class ConstructStateCallback : public osg::NodeCallback
return 0;
}
// get max 3D texture size
int textureSize;
glGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &textureSize);
if (textureSize > 256)
textureSize = 256;
// scale them all to the same size.
image_0->scaleImage(256,256,1);
image_1->scaleImage(256,256,1);
image_2->scaleImage(256,256,1);
image_3->scaleImage(256,256,1);
image_0->scaleImage(textureSize,textureSize,1);
image_1->scaleImage(textureSize,textureSize,1);
image_2->scaleImage(textureSize,textureSize,1);
image_3->scaleImage(textureSize,textureSize,1);
// then allocated a 3d image to use for texturing.
osg::Image* image_3d = new osg::Image;
image_3d->allocateImage(256,256,4,
image_3d->allocateImage(textureSize,textureSize,4,
image_0->getPixelFormat(),image_0->getDataType());
// copy the 2d images into the 3d image.