Examples with VertexBuffer com.jme3.scene.VertexBuffer used on opensource projects

Example 16 with VertexBuffer

use of com.jme3.scene.VertexBuffer in project jmonkeyengine by jMonkeyEngine.

the class EntropyComputeUtil method computeLodEntropy.

public static float computeLodEntropy(Mesh terrainBlock, Buffer lodIndices) {
    // Bounding box for the terrain block
    BoundingBox bbox = (BoundingBox) terrainBlock.getBound();
    // Vertex positions for the block
    FloatBuffer positions = terrainBlock.getFloatBuffer(Type.Position);
    // Prepare to cast rays
    Vector3f pos = new Vector3f();
    Vector3f dir = new Vector3f(0, -1, 0);
    Ray ray = new Ray(pos, dir);
    // Prepare collision results
    CollisionResults results = new CollisionResults();
    // Set the LOD indices on the block
    VertexBuffer originalIndices = terrainBlock.getBuffer(Type.Index);
    terrainBlock.clearBuffer(Type.Index);
    if (lodIndices instanceof IntBuffer)
        terrainBlock.setBuffer(Type.Index, 3, (IntBuffer) lodIndices);
    else if (lodIndices instanceof ShortBuffer) {
        terrainBlock.setBuffer(Type.Index, 3, (ShortBuffer) lodIndices);
    }
    // Recalculate collision mesh
    terrainBlock.createCollisionData();
    float entropy = 0;
    for (int i = 0; i < positions.limit() / 3; i++) {
        BufferUtils.populateFromBuffer(pos, positions, i);
        float realHeight = pos.y;
        pos.addLocal(0, bbox.getYExtent(), 0);
        ray.setOrigin(pos);
        results.clear();
        terrainBlock.collideWith(ray, Matrix4f.IDENTITY, bbox, results);
        if (results.size() > 0) {
            Vector3f contactPoint = results.getClosestCollision().getContactPoint();
            float delta = Math.abs(realHeight - contactPoint.y);
            entropy = Math.max(delta, entropy);
        }
    }
    // Restore original indices
    terrainBlock.clearBuffer(Type.Index);
    terrainBlock.setBuffer(originalIndices);
    return entropy;
}

Example 17 with VertexBuffer

use of com.jme3.scene.VertexBuffer in project jmonkeyengine by jMonkeyEngine.

the class GLRenderer method updateVertexArray.

public void updateVertexArray(Mesh mesh, VertexBuffer instanceData) {
    int id = mesh.getId();
    if (id == -1) {
        IntBuffer temp = intBuf1;
        gl3.glGenVertexArrays(temp);
        id = temp.get(0);
        mesh.setId(id);
    }
    if (context.boundVertexArray != id) {
        gl3.glBindVertexArray(id);
        context.boundVertexArray = id;
    }
    VertexBuffer interleavedData = mesh.getBuffer(Type.InterleavedData);
    if (interleavedData != null && interleavedData.isUpdateNeeded()) {
        updateBufferData(interleavedData);
    }
    if (instanceData != null) {
        setVertexAttrib(instanceData, null);
    }
    for (VertexBuffer vb : mesh.getBufferList().getArray()) {
        if (vb.getBufferType() == Type.InterleavedData || // ignore cpu-only buffers
        vb.getUsage() == Usage.CpuOnly || vb.getBufferType() == Type.Index) {
            continue;
        }
        if (vb.getStride() == 0) {
            // not interleaved
            setVertexAttrib(vb);
        } else {
            // interleaved
            setVertexAttrib(vb, interleavedData);
        }
    }
}

Example 18 with VertexBuffer

use of com.jme3.scene.VertexBuffer in project jmonkeyengine by jMonkeyEngine.

the class BatchNode method updateSubBatch.

protected void updateSubBatch(Geometry bg) {
    Batch batch = batchesByGeom.get(bg);
    if (batch != null) {
        Mesh mesh = batch.geometry.getMesh();
        Mesh origMesh = bg.getMesh();
        VertexBuffer pvb = mesh.getBuffer(VertexBuffer.Type.Position);
        FloatBuffer posBuf = (FloatBuffer) pvb.getData();
        VertexBuffer nvb = mesh.getBuffer(VertexBuffer.Type.Normal);
        FloatBuffer normBuf = (FloatBuffer) nvb.getData();
        VertexBuffer opvb = origMesh.getBuffer(VertexBuffer.Type.Position);
        FloatBuffer oposBuf = (FloatBuffer) opvb.getData();
        VertexBuffer onvb = origMesh.getBuffer(VertexBuffer.Type.Normal);
        FloatBuffer onormBuf = (FloatBuffer) onvb.getData();
        Matrix4f transformMat = getTransformMatrix(bg);
        if (mesh.getBuffer(VertexBuffer.Type.Tangent) != null) {
            VertexBuffer tvb = mesh.getBuffer(VertexBuffer.Type.Tangent);
            FloatBuffer tanBuf = (FloatBuffer) tvb.getData();
            VertexBuffer otvb = origMesh.getBuffer(VertexBuffer.Type.Tangent);
            FloatBuffer otanBuf = (FloatBuffer) otvb.getData();
            doTransformsTangents(oposBuf, onormBuf, otanBuf, posBuf, normBuf, tanBuf, bg.startIndex, bg.startIndex + bg.getVertexCount(), transformMat);
            tvb.updateData(tanBuf);
        } else {
            doTransforms(oposBuf, onormBuf, posBuf, normBuf, bg.startIndex, bg.startIndex + bg.getVertexCount(), transformMat);
        }
        pvb.updateData(posBuf);
        nvb.updateData(normBuf);
        batch.geometry.updateModelBound();
    }
}

Example 19 with VertexBuffer

use of com.jme3.scene.VertexBuffer in project jmonkeyengine by jMonkeyEngine.

the class BatchNode method mergeGeometries.

/**
     * Merges all geometries in the collection into
     * the output mesh. Does not take into account materials.
     *
     * @param geometries
     * @param outMesh
     */
private void mergeGeometries(Mesh outMesh, List<Geometry> geometries) {
    int[] compsForBuf = new int[VertexBuffer.Type.values().length];
    VertexBuffer.Format[] formatForBuf = new VertexBuffer.Format[compsForBuf.length];
    boolean[] normForBuf = new boolean[VertexBuffer.Type.values().length];
    int totalVerts = 0;
    int totalTris = 0;
    int totalLodLevels = 0;
    int maxWeights = -1;
    Mesh.Mode mode = null;
    float lineWidth = 1f;
    for (Geometry geom : geometries) {
        totalVerts += geom.getVertexCount();
        totalTris += geom.getTriangleCount();
        totalLodLevels = Math.min(totalLodLevels, geom.getMesh().getNumLodLevels());
        if (maxVertCount < geom.getVertexCount()) {
            maxVertCount = geom.getVertexCount();
        }
        Mesh.Mode listMode;
        //float listLineWidth = 1f;
        int components;
        switch(geom.getMesh().getMode()) {
            case Points:
                listMode = Mesh.Mode.Points;
                components = 1;
                break;
            case LineLoop:
            case LineStrip:
            case Lines:
                listMode = Mesh.Mode.Lines;
                //listLineWidth = geom.getMesh().getLineWidth();
                components = 2;
                break;
            case TriangleFan:
            case TriangleStrip:
            case Triangles:
                listMode = Mesh.Mode.Triangles;
                components = 3;
                break;
            default:
                throw new UnsupportedOperationException();
        }
        for (VertexBuffer vb : geom.getMesh().getBufferList().getArray()) {
            int currentCompsForBuf = compsForBuf[vb.getBufferType().ordinal()];
            if (vb.getBufferType() != VertexBuffer.Type.Index && currentCompsForBuf != 0 && currentCompsForBuf != vb.getNumComponents()) {
                throw new UnsupportedOperationException("The geometry " + geom + " buffer " + vb.getBufferType() + " has different number of components than the rest of the meshes " + "(this: " + vb.getNumComponents() + ", expected: " + currentCompsForBuf + ")");
            }
            compsForBuf[vb.getBufferType().ordinal()] = vb.getNumComponents();
            formatForBuf[vb.getBufferType().ordinal()] = vb.getFormat();
            normForBuf[vb.getBufferType().ordinal()] = vb.isNormalized();
        }
        maxWeights = Math.max(maxWeights, geom.getMesh().getMaxNumWeights());
        if (mode != null && mode != listMode) {
            throw new UnsupportedOperationException("Cannot combine different" + " primitive types: " + mode + " != " + listMode);
        }
        mode = listMode;
        //Not needed anymore as lineWidth is now in RenderState and will be taken into account when merging according to the material
        //            if (mode == Mesh.Mode.Lines) {
        //                if (lineWidth != 1f && listLineWidth != lineWidth) {
        //                    throw new UnsupportedOperationException("When using Mesh Line mode, cannot combine meshes with different line width "
        //                            + lineWidth + " != " + listLineWidth);
        //                }
        //                lineWidth = listLineWidth;
        //            }
        compsForBuf[VertexBuffer.Type.Index.ordinal()] = components;
    }
    outMesh.setMaxNumWeights(maxWeights);
    outMesh.setMode(mode);
    //outMesh.setLineWidth(lineWidth);
    if (totalVerts >= 65536) {
        // make sure we create an UnsignedInt buffer so we can fit all of the meshes
        formatForBuf[VertexBuffer.Type.Index.ordinal()] = VertexBuffer.Format.UnsignedInt;
    } else {
        formatForBuf[VertexBuffer.Type.Index.ordinal()] = VertexBuffer.Format.UnsignedShort;
    }
    // generate output buffers based on retrieved info
    for (int i = 0; i < compsForBuf.length; i++) {
        if (compsForBuf[i] == 0) {
            continue;
        }
        Buffer data;
        if (i == VertexBuffer.Type.Index.ordinal()) {
            data = VertexBuffer.createBuffer(formatForBuf[i], compsForBuf[i], totalTris);
        } else {
            data = VertexBuffer.createBuffer(formatForBuf[i], compsForBuf[i], totalVerts);
        }
        VertexBuffer vb = new VertexBuffer(VertexBuffer.Type.values()[i]);
        vb.setupData(VertexBuffer.Usage.Dynamic, compsForBuf[i], formatForBuf[i], data);
        vb.setNormalized(normForBuf[i]);
        outMesh.setBuffer(vb);
    }
    int globalVertIndex = 0;
    int globalTriIndex = 0;
    for (Geometry geom : geometries) {
        Mesh inMesh = geom.getMesh();
        if (!isBatch(geom)) {
            geom.associateWithGroupNode(this, globalVertIndex);
        }
        int geomVertCount = inMesh.getVertexCount();
        int geomTriCount = inMesh.getTriangleCount();
        for (int bufType = 0; bufType < compsForBuf.length; bufType++) {
            VertexBuffer inBuf = inMesh.getBuffer(VertexBuffer.Type.values()[bufType]);
            VertexBuffer outBuf = outMesh.getBuffer(VertexBuffer.Type.values()[bufType]);
            if (outBuf == null) {
                continue;
            }
            if (VertexBuffer.Type.Index.ordinal() == bufType) {
                int components = compsForBuf[bufType];
                IndexBuffer inIdx = inMesh.getIndicesAsList();
                IndexBuffer outIdx = outMesh.getIndexBuffer();
                for (int tri = 0; tri < geomTriCount; tri++) {
                    for (int comp = 0; comp < components; comp++) {
                        int idx = inIdx.get(tri * components + comp) + globalVertIndex;
                        outIdx.put((globalTriIndex + tri) * components + comp, idx);
                    }
                }
            } else if (VertexBuffer.Type.Position.ordinal() == bufType) {
                FloatBuffer inPos = (FloatBuffer) inBuf.getData();
                FloatBuffer outPos = (FloatBuffer) outBuf.getData();
                doCopyBuffer(inPos, globalVertIndex, outPos, 3);
            } else if (VertexBuffer.Type.Normal.ordinal() == bufType || VertexBuffer.Type.Tangent.ordinal() == bufType) {
                FloatBuffer inPos = (FloatBuffer) inBuf.getData();
                FloatBuffer outPos = (FloatBuffer) outBuf.getData();
                doCopyBuffer(inPos, globalVertIndex, outPos, compsForBuf[bufType]);
                if (VertexBuffer.Type.Tangent.ordinal() == bufType) {
                    useTangents = true;
                }
            } else {
                if (inBuf == null) {
                    throw new IllegalArgumentException("Geometry " + geom.getName() + " has no " + outBuf.getBufferType() + " buffer whereas other geoms have. all geometries should have the same types of buffers.\n Try to use GeometryBatchFactory.alignBuffer() on the BatchNode before batching");
                } else if (outBuf == null) {
                    throw new IllegalArgumentException("Geometry " + geom.getName() + " has a " + outBuf.getBufferType() + " buffer whereas other geoms don't. all geometries should have the same types of buffers.\n Try to use GeometryBatchFactory.alignBuffer() on the BatchNode before batching");
                } else {
                    inBuf.copyElements(0, outBuf, globalVertIndex, geomVertCount);
                }
            }
        }
        globalVertIndex += geomVertCount;
        globalTriIndex += geomTriCount;
    }
}

Example 20 with VertexBuffer

use of com.jme3.scene.VertexBuffer in project jmonkeyengine by jMonkeyEngine.

the class VertexBuffer method clone.

/**
     * Creates a deep clone of the {@link VertexBuffer}.
     * 
     * @return Deep clone of this buffer
     */
@Override
public VertexBuffer clone() {
    // NOTE: Superclass GLObject automatically creates shallow clone
    // e.g re-use ID.
    VertexBuffer vb = (VertexBuffer) super.clone();
    vb.handleRef = new Object();
    vb.id = -1;
    if (data != null) {
        // Make sure to pass a read-only buffer to clone so that
        // the position information doesn't get clobbered by another
        // reading thread during cloning (and vice versa) since this is
        // a purely read-only operation.
        vb.updateData(BufferUtils.clone(getDataReadOnly()));
    }
    return vb;
}