]> git.mxchange.org Git - simgear.git/blobdiff - simgear/scene/material/TextureBuilder.cxx
Random buildings - initial commit.
[simgear.git] / simgear / scene / material / TextureBuilder.cxx
index ad3ad56909d22366de1d57a3373ecf311fa27af1..c06883aab0f5b0eda332e3269eb4ec472c44cf78 100644 (file)
 #include <boost/tuple/tuple.hpp>
 #include <boost/tuple/tuple_comparison.hpp>
 
+#include <simgear/scene/util/OsgMath.hxx>
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
 #include <simgear/scene/util/SGSceneFeatures.hxx>
 #include <simgear/scene/util/StateAttributeFactory.hxx>
-#include <simgear/math/SGMath.hxx>
 #include <simgear/structure/OSGUtils.hxx>
 
-#include "Noise.hxx"
-
 namespace simgear
 {
 using namespace std;
@@ -59,12 +57,12 @@ TexEnvCombine* buildTexEnvCombine(Effect* effect,
 TexGen* buildTexGen(Effect* Effect, const SGPropertyNode* tgenProp);
 
 // Hack to force inclusion of TextureBuilder.cxx in library
-osg::Texture* TextureBuilder::buildFromType(Effect* effect, const string& type,
+osg::Texture* TextureBuilder::buildFromType(Effect* effect, Pass* pass, const string& type,
                                             const SGPropertyNode*props,
                                             const SGReaderWriterOptions*
                                             options)
 {
-    return EffectBuilder<Texture>::buildFromType(effect, type, props, options);
+    return EffectBuilder<Texture>::buildFromType(effect, pass, type, props, options);
 }
 
 typedef boost::tuple<string, Texture::FilterMode, Texture::FilterMode,
@@ -130,11 +128,11 @@ void TextureUnitBuilder::buildAttribute(Effect* effect, Pass* pass,
         type = pType->getStringValue();
     Texture* texture = 0;
     try {
-        texture = TextureBuilder::buildFromType(effect, type, prop,
+        texture = TextureBuilder::buildFromType(effect, pass, type, prop,
                                                 options);
     }
     catch (BuilderException& e) {
-        SG_LOG(SG_INPUT, SG_ALERT, e.getFormattedMessage() << ", "
+        SG_LOG(SG_INPUT, SG_DEBUG, e.getFormattedMessage() << ", "
             << "maybe the reader did not set the filename attribute, "
             << "using white for type '" << type << "' on '" << pass->getName() << "', in " << prop->getPath() );
         texture = StateAttributeFactory::instance()->getWhiteTexture();
@@ -216,14 +214,11 @@ TexTuple makeTexTuple(Effect* effect, const SGPropertyNode* props,
     if (pImage)
     {
         imageName = pImage->getStringValue();
-        if (!imageName.empty())
+        absFileName = SGModelLib::findDataFile(imageName, options);
+        if (absFileName.empty())
         {
-            absFileName = SGModelLib::findDataFile(imageName, options);
-            if (absFileName.empty())
-            {
-                SG_LOG(SG_INPUT, SG_ALERT, "Texture file not found: '"
-                       << imageName << "'");
-            }
+            SG_LOG(SG_INPUT, SG_ALERT, "Texture file not found: '"
+                   << imageName << "'");
         }
     }
 
@@ -246,8 +241,11 @@ void setAttrs(const TexTuple& attrs, Texture* tex,
     } else {
         osgDB::ReaderWriter::ReadResult result;
         result = osgDB::readImageFile(imageName, options);
-        if (result.success()) {
-            osg::ref_ptr<osg::Image> image = result.getImage();
+        osg::ref_ptr<osg::Image> image;
+        if (result.success())
+            image = result.getImage();
+        if (image.valid())
+        {
             image = computeMipmap( image.get(), attrs.get<7>() );
             tex->setImage(GL_FRONT_AND_BACK, image.get());
             int s = image->s();
@@ -278,26 +276,35 @@ class TexBuilder : public TextureBuilder
 {
 public:
     TexBuilder(const string& texType) : _type(texType) {}
-    Texture* build(Effect* effect, const SGPropertyNode*,
+    Texture* build(Effect* effect, Pass* pass, const SGPropertyNode*,
                    const SGReaderWriterOptions* options);
 protected:
-    typedef map<TexTuple, ref_ptr<T> > TexMap;
+    typedef map<TexTuple, observer_ptr<T> > TexMap;
     TexMap texMap;
     const string _type;
 };
 
 template<typename T>
-Texture* TexBuilder<T>::build(Effect* effect, const SGPropertyNode* props,
+Texture* TexBuilder<T>::build(Effect* effect, Pass* pass, const SGPropertyNode* props,
                               const SGReaderWriterOptions* options)
 {
     TexTuple attrs = makeTexTuple(effect, props, options, _type);
     typename TexMap::iterator itr = texMap.find(attrs);
-    if (itr != texMap.end())
-        return itr->second.get();
-    T* tex = new T;
+
+    ref_ptr<T> tex;
+    if ((itr != texMap.end())&&
+        (itr->second.lock(tex)))
+    {
+        return tex.release();
+    }
+
+    tex = new T;
     setAttrs(attrs, tex, options);
-    texMap.insert(make_pair(attrs, tex));
-    return tex;
+    if (itr == texMap.end())
+        texMap.insert(make_pair(attrs, tex));
+    else
+        itr->second = tex; // update existing, but empty observer
+    return tex.release();
 }
 
 
@@ -311,11 +318,11 @@ TextureBuilder::Registrar install3D("3d", new TexBuilder<Texture3D>("3d"));
 class WhiteTextureBuilder : public TextureBuilder
 {
 public:
-    Texture* build(Effect* effect, const SGPropertyNode*,
+    Texture* build(Effect* effect, Pass* pass, const SGPropertyNode*,
                    const SGReaderWriterOptions* options);
 };
 
-Texture* WhiteTextureBuilder::build(Effect* effect, const SGPropertyNode*,
+Texture* WhiteTextureBuilder::build(Effect* effect, Pass* pass, const SGPropertyNode*,
                                     const SGReaderWriterOptions* options)
 {
     return StateAttributeFactory::instance()->getWhiteTexture();
@@ -329,11 +336,11 @@ TextureBuilder::Registrar installWhite("white", new WhiteTextureBuilder);
 class TransparentTextureBuilder : public TextureBuilder
 {
 public:
-    Texture* build(Effect* effect, const SGPropertyNode*,
+    Texture* build(Effect* effect, Pass* pass, const SGPropertyNode*,
                    const SGReaderWriterOptions* options);
 };
 
-Texture* TransparentTextureBuilder::build(Effect* effect, const SGPropertyNode*,
+Texture* TransparentTextureBuilder::build(Effect* effect, Pass* pass, const SGPropertyNode*,
                                     const SGReaderWriterOptions* options)
 {
     return StateAttributeFactory::instance()->getTransparentTexture();
@@ -345,62 +352,17 @@ TextureBuilder::Registrar installTransparent("transparent",
                                              new TransparentTextureBuilder);
 }
 
-osg::Image* make3DNoiseImage(int texSize)
-{
-    osg::Image* image = new osg::Image;
-    image->setImage(texSize, texSize, texSize,
-                    4, GL_RGBA, GL_UNSIGNED_BYTE,
-                    new unsigned char[4 * texSize * texSize * texSize],
-                    osg::Image::USE_NEW_DELETE);
-
-    const int startFrequency = 4;
-    const int numOctaves = 4;
-
-    int f, i, j, k, inc;
-    double ni[3];
-    double inci, incj, inck;
-    int frequency = startFrequency;
-    GLubyte *ptr;
-    double amp = 0.5;
-
-    osg::notify(osg::WARN) << "creating 3D noise texture... ";
-
-    for (f = 0, inc = 0; f < numOctaves; ++f, frequency *= 2, ++inc, amp *= 0.5)
-    {
-        SetNoiseFrequency(frequency);
-        ptr = image->data();
-        ni[0] = ni[1] = ni[2] = 0;
-
-        inci = 1.0 / (texSize / frequency);
-        for (i = 0; i < texSize; ++i, ni[0] += inci)
-        {
-            incj = 1.0 / (texSize / frequency);
-            for (j = 0; j < texSize; ++j, ni[1] += incj)
-            {
-                inck = 1.0 / (texSize / frequency);
-                for (k = 0; k < texSize; ++k, ni[2] += inck, ptr += 4)
-                {
-                    *(ptr+inc) = (GLubyte) (((noise3(ni) + 1.0) * amp) * 128.0);
-                }
-            }
-        }
-    }
-
-    osg::notify(osg::WARN) << "DONE" << std::endl;
-    return image;
-}
-
 class NoiseBuilder : public TextureBuilder
 {
 public:
-    Texture* build(Effect* effect, const SGPropertyNode*,
+    Texture* build(Effect* effect, Pass* pass, const SGPropertyNode*,
                    const SGReaderWriterOptions* options);
 protected:
     typedef map<int, ref_ptr<Texture3D> > NoiseMap;
     NoiseMap _noises;
 };
 
-Texture* NoiseBuilder::build(Effect* effect, const SGPropertyNode* props,
+Texture* NoiseBuilder::build(Effect* effect, Pass* pass, const SGPropertyNode* props,
                              const SGReaderWriterOptions* options)
 {
     int texSize = 64;
@@ -408,18 +370,8 @@ Texture* NoiseBuilder::build(Effect* effect, const SGPropertyNode* props,
                                                             "size");
     if (sizeProp)
         texSize = sizeProp->getValue<int>();
-    NoiseMap::iterator itr = _noises.find(texSize);
-    if (itr != _noises.end())
-        return itr->second.get();
-    Texture3D* noiseTexture = new osg::Texture3D;
-    noiseTexture->setFilter(osg::Texture3D::MIN_FILTER, osg::Texture3D::LINEAR);
-    noiseTexture->setFilter(osg::Texture3D::MAG_FILTER, osg::Texture3D::LINEAR);
-    noiseTexture->setWrap(osg::Texture3D::WRAP_S, osg::Texture3D::REPEAT);
-    noiseTexture->setWrap(osg::Texture3D::WRAP_T, osg::Texture3D::REPEAT);
-    noiseTexture->setWrap(osg::Texture3D::WRAP_R, osg::Texture3D::REPEAT);
-    noiseTexture->setImage( make3DNoiseImage(texSize) );
-    _noises.insert(make_pair(texSize, noiseTexture));
-    return noiseTexture;
+
+    return StateAttributeFactory::instance()->getNoiseTexture(texSize);
 }
 
 namespace
@@ -461,7 +413,7 @@ CubeMapTuple makeCubeMapTuple(Effect* effect, const SGPropertyNode* props)
 class CubeMapBuilder : public TextureBuilder
 {
 public:
-    Texture* build(Effect* effect, const SGPropertyNode*,
+    Texture* build(Effect* effect, Pass* pass, const SGPropertyNode*,
                    const SGReaderWriterOptions* options);
 protected:
     typedef map<CubeMapTuple, ref_ptr<TextureCubeMap> > CubeMap;
@@ -484,7 +436,7 @@ void copySubImage(const osg::Image* srcImage, int src_s, int src_t, int width, i
 }
 
 
-Texture* CubeMapBuilder::build(Effect* effect, const SGPropertyNode* props,
+Texture* CubeMapBuilder::build(Effect* effect, Pass* pass, const SGPropertyNode* props,
                                const SGReaderWriterOptions* options)
 {
     // First check that there is a <images> tag
@@ -876,4 +828,50 @@ bool makeTextureParameters(SGPropertyNode* paramRoot, const StateSet* ss)
     return true;
 }
 
+class GBufferBuilder : public TextureBuilder
+{
+public:
+    GBufferBuilder(int b) : buffer(b) {}
+    Texture* build(Effect* effect, Pass* pass, const SGPropertyNode*,
+                   const SGReaderWriterOptions* options);
+private:
+    int buffer;
+};
+
+Texture* GBufferBuilder::build(Effect* effect, Pass* pass, const SGPropertyNode* prop,
+                                    const SGReaderWriterOptions* options)
+{
+    int unit = 0;
+    const SGPropertyNode* pUnit = prop->getChild("unit");
+    if (pUnit) {
+        unit = pUnit->getValue<int>();
+    } else {
+        const SGPropertyNode* pName = prop->getChild("name");
+        if (pName)
+            try {
+                unit = boost::lexical_cast<int>(pName->getStringValue());
+            } catch (boost::bad_lexical_cast& lex) {
+                SG_LOG(SG_INPUT, SG_ALERT, "can't decode name as texture unit "
+                       << lex.what());
+            }
+    }
+    pass->setBufferUnit( unit, buffer );
+
+    // Return white for now. Would be overridden in Technique::ProcessDrawable
+    return StateAttributeFactory::instance()->getWhiteTexture();
+}
+
+namespace
+{
+    TextureBuilder::Registrar installDepthBuffer("depth-buffer", new GBufferBuilder(Effect::DEPTH_BUFFER));
+    TextureBuilder::Registrar installNormalBuffer("normal-buffer", new GBufferBuilder(Effect::NORMAL_BUFFER));
+    TextureBuilder::Registrar installDiffuseBuffer("diffuse-buffer", new GBufferBuilder(Effect::DIFFUSE_BUFFER));
+    TextureBuilder::Registrar installSpecularBuffer("spec-emis-buffer", new GBufferBuilder(Effect::SPEC_EMIS_BUFFER));
+    TextureBuilder::Registrar installLightingBuffer("lighting-buffer", new GBufferBuilder(Effect::LIGHTING_BUFFER));
+    TextureBuilder::Registrar installMiddleBloomBuffer("middle-bloom-buffer", new GBufferBuilder(Effect::MIDDLE_BLOOM_BUFFER));
+    TextureBuilder::Registrar installBloomBuffer("bloom-buffer", new GBufferBuilder(Effect::BLOOM_BUFFER));
+    TextureBuilder::Registrar installAoBuffer("ao-buffer", new GBufferBuilder(Effect::AO_BUFFER));
+    TextureBuilder::Registrar installShadowBuffer("shadow-buffer", new GBufferBuilder(Effect::SHADOW_BUFFER));
+}
+
 }