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WS30: Improve MaterialTextureAtlas

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- Set Anisotropic from properties
- Only generate the TextureAtlas for VPB (not used in WS2.0)
- Only resize textures if required
This commit is contained in:
Stuart Buchanan 2021-02-06 12:53:12 +00:00
parent be49f880b8
commit 95b7e84d9e
1 changed files with 10 additions and 4 deletions
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12
simgear/scene/material/matlib.cxx
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@ -44,6 +44,7 @@
#include <simgear/scene/model/modellib.hxx>
#include <simgear/scene/tgdb/userdata.hxx>
#include <simgear/scene/util/SGReaderWriterOptions.hxx>
#include <simgear/scene/util/SGSceneFeatures.hxx>
#include "mat.hxx"
@ -304,9 +305,11 @@ SGMaterial *SGMaterialCache::find(int lc) const
// Generate a texture atlas for this location
SGMaterialCache::Atlas SGMaterialLib::getMaterialTextureAtlas(SGVec2f center, const simgear::SGReaderWriterOptions* options)
{
SG_LOG(SG_TERRAIN, SG_DEBUG, "Getting Texture Atlas for " << center);
SGMaterialCache::Atlas atlas;
// Non-VPB does not use the Atlas, so save some both and return
if (! SGSceneFeatures::instance()->getVPBActive()) return atlas;
std::string id;
const_landclass_map_iterator lc_iter = landclasslib.begin();
for (; lc_iter != landclasslib.end(); ++lc_iter) {
@ -352,7 +355,7 @@ SGMaterialCache::Atlas SGMaterialLib::getMaterialTextureAtlas(SGVec2f center, co
atlas.specular->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP);
atlas.specular->setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP);
atlas.image->setMaxAnisotropy(16.0f);
atlas.image->setMaxAnisotropy(SGSceneFeatures::instance()->getTextureFilter());
atlas.image->setResizeNonPowerOfTwoHint(false);
atlas.image->setFilter(osg::Texture::MIN_FILTER, osg::Texture::NEAREST_MIPMAP_NEAREST);
@ -392,7 +395,10 @@ SGMaterialCache::Atlas SGMaterialLib::getMaterialTextureAtlas(SGVec2f center, co
osg::ref_ptr<osg::Image> subtexture = osgDB::readRefImageFile(fullPath, options);
if (subtexture && subtexture->valid()) {
if ((subtexture->s() != 2048) || (subtexture->t() != 2048)) {
subtexture->scaleImage(2048,2048,1);
}
// Add other useful information, such as the texture size in m.
// As we pack the texture size into a texture, we need to scale to [0..1.0]