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It has to be something that I'm doing wrong.
All of the transparency demos in the Java3D demo directory display fine on this
card with the OpenGL runtime.
I can cut & paste the TransparencyAttributes
code out of a working demo and copy it into my app, and the object still
disappears completely.
I could really use a 3rd or 4th or even 5th pair of
eyes looking at this code. All I can think of is that something I've
set somewhere else is affecting the display.
I've a jar illustrating the problem at http://www.users.qwest.net/~kduling/Milkshape/Demo.jar
In the console, you'll see "Transparency attributes for Crystal were set to
0.77" There are also two screenshots, http://www.users.qwest.net/~kduling/Milkshape/ogl.jpg
and http://www.users.qwest.net/~kduling/Milkshape/dx.jpg
that show how this works fine in DirectX, but not in OpenGL.
The loader is currently doing all the work here in
MS3DLoader.loadModel().
/** Load the model from the input
stream
* @param is an InputStream object * @return the loaded Scene */ private Scene loadModel(final InputStream is) { final float[] texCoord = new float[2]; final SceneBase scene = new SceneBase(); final BranchGroup objGroup = new BranchGroup(); try { ledis = new LEDataInputStream(is); final MS3DHeader header = loadHeader(); final MS3DVertex vertList[] = loadVertexList(); final MS3DTriangle triList[] = loadTriangleList(); final MS3DGroup groupList[] = loadGroupList(); final MS3DMaterial materialList[] = loadMaterialList(); final float animationFPS = this.ledis.readFloat(); final float currentTime = this.ledis.readFloat(); final int totalFrames = this.ledis.readInt(); final MS3DJoint jointList[] = loadJointList(); for (int i = 0; i
< groupList.length; i++)
{ Texture texture = null; Texture alphamap = null; int vertexCount = 0; MS3DGroup mesh = groupList[i]; TriangleArray triangles; Shape3D shape = new Shape3D(); Material mat = new Material(); Appearance app = new Appearance(); final int matIndex = mesh.getMaterialIndex(); if (matIndex > -1) { final MS3DMaterial material = materialList[matIndex]; Color4f color4 = material.getAmbient(); mat.setAmbientColor(color4.x, color4.y, color4.z); color4 =
material.getDiffuse();
mat.setDiffuseColor(color4.x, color4.y, color4.z); color4 =
material.getEmissive();
mat.setEmissiveColor(color4.x, color4.y, color4.z); color4 = material.getSpecular(); mat.setSpecularColor(color4.x, color4.y, color4.z); final float trans
= 1.0f -
material.getTransparency();
if (trans > 0.0f) { TransparencyAttributes transparency = new TransparencyAttributes(); transparency.setTransparency(trans); transparency.setTransparencyMode(TransparencyAttributes.BLENDED); // if this is set to SCREEN_DOOR, it works app.setTransparencyAttributes(transparency); System.out.println("Transparency attributes for " + mesh.getName() + " were set to " + trans); }
mat.setShininess(material.getShininess());
String texFileName
=
material.getTexture();
if (texFileName.length() > 0) { switch (source) { case FROM_FILE: if (this.getBasePath() != null) texFileName = this.getBasePath() + texFileName; texture = new TextureLoader(texFileName, observer).getTexture(); break; case FROM_URL: { final byte temp[] = texFileName.getBytes(); for (int x = 0; x < temp.length; x++) // search for a backslash and replace if (temp[x] == '\\') temp[x] = '/'; texFileName = new String(temp); texture = new TextureLoader(new URL(getBaseUrl(), texFileName), observer).getTexture(); } break; } } if (texture != null) { app.setTexture(texture);
TextureAttributes ta = new
TextureAttributes();
ta.setTextureMode(TextureAttributes.MODULATE); app.setTextureAttributes(ta); //
TODO: Still need to load the 2nd
texture
} app.setMaterial(mat); if (texture != null) triangles = new TriangleArray(mesh.getTriangleCount() * 3, GeometryArray.COORDINATES | GeometryArray.NORMALS | GeometryArray.TEXTURE_COORDINATE_2 | GeometryArray.COLOR_3); else triangles = new TriangleArray(mesh.getTriangleCount() * 3, GeometryArray.COORDINATES | GeometryArray.NORMALS | GeometryArray.COLOR_3); } else triangles = new TriangleArray(mesh.getTriangleCount() * 3, GeometryArray.COORDINATES | GeometryArray.NORMALS); for (int
j = 0; j < mesh.getTriangleCount();
j++)
{ final int triangleIndex = mesh.getTriangleIndicies()[j]; final MS3DTriangle triangle = triList[triangleIndex]; final float s[] = triangle.getS(); final float t[] = triangle.getT(); for (int k = 0; k < 3; k++) { final int index = triangle.getVertexIndicies()[k]; final Vector3f normals[] = triangle.getVertexNormals(); final MS3DVertex vertex = vertList[index]; triangles.setCoordinate(vertexCount, vertex.getLocation()); if (texture != null) { texCoord[0] = s[k]; texCoord[1] = t[k]; triangles.setTextureCoordinate(0, vertexCount, texCoord); } triangles.setNormal(vertexCount++, normals[k]); } } shape.setGeometry(triangles); shape.setAppearance(app); objGroup.addChild(shape); scene.addNamedObject(mesh.getName(), shape); } } catch (IOException e) { e.printStackTrace(); } scene.setSceneGroup(objGroup); return scene; } |
