Merge branch 'timoore/effects'

[simgear.git] / simgear / scene / material / TextureBuilder.cxx

diff --git a/simgear/scene/material/TextureBuilder.cxx b/simgear/scene/material/TextureBuilder.cxx
index d7382e9219ad969d1a1c14d09d8de3b01eed8152..a924b95571055057d3e378b86ff0ba10ad7a439a 100644 (file)
--- a/simgear/scene/material/TextureBuilder.cxx
+++ b/simgear/scene/material/TextureBuilder.cxx
@@ -181,24 +181,27 @@ TexTuple makeTexTuple(Effect* effect, const SGPropertyNode* props,
                       const string& texType)
 {
     Texture::FilterMode minFilter = Texture::LINEAR_MIPMAP_LINEAR;
-    findAttr(filterModes, getEffectPropertyChild(effect, props, "filter"),
-             minFilter);
+    const SGPropertyNode* ep = 0;
+    if ((ep = getEffectPropertyChild(effect, props, "filter")))
+        findAttr(filterModes, ep, minFilter);
     Texture::FilterMode magFilter = Texture::LINEAR;
-    findAttr(filterModes, getEffectPropertyChild(effect, props,
-                                                 "mag-filter"),
-             magFilter);
+    if ((ep = getEffectPropertyChild(effect, props, "mag-filter")))
+        findAttr(filterModes, ep, magFilter);
     const SGPropertyNode* pWrapS
         = getEffectPropertyChild(effect, props, "wrap-s");
     Texture::WrapMode sWrap = Texture::CLAMP;
-    findAttr(wrapModes, pWrapS, sWrap);
+    if (pWrapS)
+        findAttr(wrapModes, pWrapS, sWrap);
     const SGPropertyNode* pWrapT
         = getEffectPropertyChild(effect, props, "wrap-t");
     Texture::WrapMode tWrap = Texture::CLAMP;
-    findAttr(wrapModes, pWrapT, tWrap);
+    if (pWrapT)
+        findAttr(wrapModes, pWrapT, tWrap);
     const SGPropertyNode* pWrapR
         = getEffectPropertyChild(effect, props, "wrap-r");
     Texture::WrapMode rWrap = Texture::CLAMP;
-    findAttr(wrapModes, pWrapR, rWrap);
+    if (pWrapR)
+        findAttr(wrapModes, pWrapR, rWrap);
     const SGPropertyNode* pImage
         = getEffectPropertyChild(effect, props, "image");
     string imageName;
@@ -297,6 +300,25 @@ namespace
 TextureBuilder::Registrar installWhite("white", new WhiteTextureBuilder);
 }
 
+class TransparentTextureBuilder : public TextureBuilder
+{
+public:
+    Texture* build(Effect* effect, const SGPropertyNode*,
+                   const osgDB::ReaderWriter::Options* options);
+};
+
+Texture* TransparentTextureBuilder::build(Effect* effect, const SGPropertyNode*,
+                                    const osgDB::ReaderWriter::Options* options)
+{
+    return StateAttributeFactory::instance()->getTransparentTexture();
+}
+
+namespace
+{
+TextureBuilder::Registrar installTransparent("transparent",
+                                             new TransparentTextureBuilder);
+}
+
 osg::Image* make3DNoiseImage(int texSize)
 {
     osg::Image* image = new osg::Image;
@@ -413,10 +435,10 @@ EffectPropertyMap<TexEnvCombine::SourceParam> sourceParams(sourceParamInit);
 
 EffectNameValue<TexEnvCombine::OperandParam> opParamInit[] =
 {
-    {"src_color", TexEnvCombine::SRC_COLOR},
-    {"one_minus_src_color", TexEnvCombine::ONE_MINUS_SRC_COLOR},
-    {"src_alpha", TexEnvCombine::SRC_ALPHA},
-    {"one_minus_src_alpha", TexEnvCombine::ONE_MINUS_SRC_ALPHA}
+    {"src-color", TexEnvCombine::SRC_COLOR},
+    {"one-minus-src-color", TexEnvCombine::ONE_MINUS_SRC_COLOR},
+    {"src-alpha", TexEnvCombine::SRC_ALPHA},
+    {"one-minus-src-alpha", TexEnvCombine::ONE_MINUS_SRC_ALPHA}
 };
 
 EffectPropertyMap<TexEnvCombine::OperandParam> operandParams(opParamInit);
@@ -435,7 +457,7 @@ TexEnvCombine* buildTexEnvCombine(Effect* effect, const SGPropertyNode* envProp)
     if ((p = getEffectPropertyChild(effect, envProp, "combine-alpha"))) {
         TexEnvCombine::CombineParam calpha = TexEnvCombine::MODULATE;
         findAttr(combineParams, p, calpha);
-        result->setCombine_RGB(calpha);
+        result->setCombine_Alpha(calpha);
     }
     if ((p = getEffectPropertyChild(effect, envProp, "source0-rgb"))) {
         TexEnvCombine::SourceParam source = TexEnvCombine::TEXTURE;
@@ -548,23 +570,18 @@ TexGen* buildTexGen(Effect* effect, const SGPropertyNode* tgenProp)
     TexGen* result = new TexGen;
     const SGPropertyNode* p = 0;
     TexGen::Mode mode = TexGen::OBJECT_LINEAR;
-    if (findAttr(tgenModes, getEffectPropertyChild(effect, tgenProp, "mode"),
-                 mode))
-        result->setMode(mode);
+    findAttr(tgenModes, getEffectPropertyChild(effect, tgenProp, "mode"), mode);
+    result->setMode(mode);
     const SGPropertyNode* planesNode = tgenProp->getChild("planes");
     if (planesNode) {
         for (int i = 0; i < planesNode->nChildren(); ++i) {
             const SGPropertyNode* planeNode = planesNode->getChild(i);
             TexGen::Coord coord;
-            if (!findAttr(tgenCoords, planeNode->getName(), coord)) {
-                SG_LOG(SG_INPUT, SG_ALERT, "Unknown TexGen plane "
-                       << planeNode->getName());
-            } else {
-                const SGPropertyNode* realNode
-                    = getEffectPropertyNode(effect, planeNode);
-                SGVec4d plane = realNode->getValue<SGVec4d>();
-                result->setPlane(coord, toOsg(plane));
-            }
+            findAttr(tgenCoords, planeNode->getName(), coord);
+            const SGPropertyNode* realNode
+                = getEffectPropertyNode(effect, planeNode);
+            SGVec4d plane = realNode->getValue<SGVec4d>();
+            result->setPlane(coord, toOsg(plane));
         }
     }
     return result;
@@ -577,8 +594,8 @@ bool makeTextureParameters(SGPropertyNode* paramRoot, const StateSet* ss)
     const Texture2D* texture = dynamic_cast<const Texture2D*>(tex);
     makeChild(texUnit, "unit")->setValue(0);
     if (!tex) {
+        // The default shader-based technique ignores active
         makeChild(texUnit, "active")->setValue(false);
-        makeChild(texUnit, "type")->setValue("white");
         return false;
     }
     const Image* image = texture->getImage();
@@ -592,10 +609,16 @@ bool makeTextureParameters(SGPropertyNode* paramRoot, const StateSet* ss)
     }
     makeChild(texUnit, "active")->setValue(true);
     makeChild(texUnit, "type")->setValue("2d");
+    string filter = findName(filterModes,
+                             texture->getFilter(Texture::MIN_FILTER));
+    string magFilter = findName(filterModes,
+                             texture->getFilter(Texture::MAG_FILTER));
     string wrapS = findName(wrapModes, texture->getWrap(Texture::WRAP_S));
     string wrapT = findName(wrapModes, texture->getWrap(Texture::WRAP_T));
     string wrapR = findName(wrapModes, texture->getWrap(Texture::WRAP_R));
     makeChild(texUnit, "image")->setStringValue(imageName);
+    makeChild(texUnit, "filter")->setStringValue(filter);
+    makeChild(texUnit, "mag-filter")->setStringValue(magFilter);
     makeChild(texUnit, "wrap-s")->setStringValue(wrapS);
     makeChild(texUnit, "wrap-t")->setStringValue(wrapT);
     makeChild(texUnit, "wrap-r")->setStringValue(wrapR);