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

Example 36 with VertexBuffer

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

the class SkeletonControl method applySkinningTangents.

/**
     * Specific method for skinning with tangents to avoid cluttering the
     * classic skinning calculation with null checks that would slow down the
     * process even if tangents don't have to be computed. Also the iteration
     * has additional indexes since tangent has 4 components instead of 3 for
     * pos and norm
     *
     * @param maxWeightsPerVert maximum number of weights per vertex
     * @param mesh the mesh
     * @param offsetMatrices the offsetMaytrices to apply
     * @param tb the tangent vertexBuffer
     */
private void applySkinningTangents(Mesh mesh, Matrix4f[] offsetMatrices, VertexBuffer tb) {
    int maxWeightsPerVert = mesh.getMaxNumWeights();
    if (maxWeightsPerVert <= 0) {
        throw new IllegalStateException("Max weights per vert is incorrectly set!");
    }
    int fourMinusMaxWeights = 4 - maxWeightsPerVert;
    // NOTE: This code assumes the vertex buffer is in bind pose
    // resetToBind() has been called this frame
    VertexBuffer vb = mesh.getBuffer(Type.Position);
    FloatBuffer fvb = (FloatBuffer) vb.getData();
    fvb.rewind();
    VertexBuffer nb = mesh.getBuffer(Type.Normal);
    FloatBuffer fnb = (FloatBuffer) nb.getData();
    fnb.rewind();
    FloatBuffer ftb = (FloatBuffer) tb.getData();
    ftb.rewind();
    // get boneIndexes and weights for mesh
    ByteBuffer ib = (ByteBuffer) mesh.getBuffer(Type.BoneIndex).getData();
    FloatBuffer wb = (FloatBuffer) mesh.getBuffer(Type.BoneWeight).getData();
    ib.rewind();
    wb.rewind();
    float[] weights = wb.array();
    byte[] indices = ib.array();
    int idxWeights = 0;
    TempVars vars = TempVars.get();
    float[] posBuf = vars.skinPositions;
    float[] normBuf = vars.skinNormals;
    float[] tanBuf = vars.skinTangents;
    int iterations = (int) FastMath.ceil(fvb.limit() / ((float) posBuf.length));
    int bufLength = 0;
    int tanLength = 0;
    for (int i = iterations - 1; i >= 0; i--) {
        // read next set of positions and normals from native buffer
        bufLength = Math.min(posBuf.length, fvb.remaining());
        tanLength = Math.min(tanBuf.length, ftb.remaining());
        fvb.get(posBuf, 0, bufLength);
        fnb.get(normBuf, 0, bufLength);
        ftb.get(tanBuf, 0, tanLength);
        int verts = bufLength / 3;
        int idxPositions = 0;
        //tangents has their own index because of the 4 components
        int idxTangents = 0;
        // iterate vertices and apply skinning transform for each effecting bone
        for (int vert = verts - 1; vert >= 0; vert--) {
            // Skip this vertex if the first weight is zero.
            if (weights[idxWeights] == 0) {
                idxTangents += 4;
                idxPositions += 3;
                idxWeights += 4;
                continue;
            }
            float nmx = normBuf[idxPositions];
            float vtx = posBuf[idxPositions++];
            float nmy = normBuf[idxPositions];
            float vty = posBuf[idxPositions++];
            float nmz = normBuf[idxPositions];
            float vtz = posBuf[idxPositions++];
            float tnx = tanBuf[idxTangents++];
            float tny = tanBuf[idxTangents++];
            float tnz = tanBuf[idxTangents++];
            // skipping the 4th component of the tangent since it doesn't have to be transformed
            idxTangents++;
            float rx = 0, ry = 0, rz = 0, rnx = 0, rny = 0, rnz = 0, rtx = 0, rty = 0, rtz = 0;
            for (int w = maxWeightsPerVert - 1; w >= 0; w--) {
                float weight = weights[idxWeights];
                Matrix4f mat = offsetMatrices[indices[idxWeights++] & 0xff];
                rx += (mat.m00 * vtx + mat.m01 * vty + mat.m02 * vtz + mat.m03) * weight;
                ry += (mat.m10 * vtx + mat.m11 * vty + mat.m12 * vtz + mat.m13) * weight;
                rz += (mat.m20 * vtx + mat.m21 * vty + mat.m22 * vtz + mat.m23) * weight;
                rnx += (nmx * mat.m00 + nmy * mat.m01 + nmz * mat.m02) * weight;
                rny += (nmx * mat.m10 + nmy * mat.m11 + nmz * mat.m12) * weight;
                rnz += (nmx * mat.m20 + nmy * mat.m21 + nmz * mat.m22) * weight;
                rtx += (tnx * mat.m00 + tny * mat.m01 + tnz * mat.m02) * weight;
                rty += (tnx * mat.m10 + tny * mat.m11 + tnz * mat.m12) * weight;
                rtz += (tnx * mat.m20 + tny * mat.m21 + tnz * mat.m22) * weight;
            }
            idxWeights += fourMinusMaxWeights;
            idxPositions -= 3;
            normBuf[idxPositions] = rnx;
            posBuf[idxPositions++] = rx;
            normBuf[idxPositions] = rny;
            posBuf[idxPositions++] = ry;
            normBuf[idxPositions] = rnz;
            posBuf[idxPositions++] = rz;
            idxTangents -= 4;
            tanBuf[idxTangents++] = rtx;
            tanBuf[idxTangents++] = rty;
            tanBuf[idxTangents++] = rtz;
            //once again skipping the 4th component of the tangent
            idxTangents++;
        }
        fvb.position(fvb.position() - bufLength);
        fvb.put(posBuf, 0, bufLength);
        fnb.position(fnb.position() - bufLength);
        fnb.put(normBuf, 0, bufLength);
        ftb.position(ftb.position() - tanLength);
        ftb.put(tanBuf, 0, tanLength);
    }
    vars.release();
    vb.updateData(fvb);
    nb.updateData(fnb);
    tb.updateData(ftb);
}

Example 37 with VertexBuffer

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

the class VertexBuffer method clone.

/**
     * Creates a deep clone of this VertexBuffer but overrides the
     * {@link Type}.
     * 
     * @param overrideType The type of the cloned VertexBuffer
     * @return A deep clone of the buffer
     */
public VertexBuffer clone(Type overrideType) {
    VertexBuffer vb = new VertexBuffer(overrideType);
    vb.components = components;
    vb.componentsLength = componentsLength;
    // 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.data = BufferUtils.clone(getDataReadOnly());
    vb.format = format;
    vb.handleRef = new Object();
    vb.id = -1;
    vb.normalized = normalized;
    vb.instanceSpan = instanceSpan;
    vb.offset = offset;
    vb.stride = stride;
    vb.updateNeeded = true;
    vb.usage = usage;
    return vb;
}

Example 38 with VertexBuffer

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

the class GLRenderer method renderMeshDefault.

private void renderMeshDefault(Mesh mesh, int lod, int count, VertexBuffer[] instanceData) {
    // Here while count is still passed in.  Can be removed when/if
    // the method is collapsed again.  -pspeed        
    count = Math.max(mesh.getInstanceCount(), count);
    VertexBuffer interleavedData = mesh.getBuffer(Type.InterleavedData);
    if (interleavedData != null && interleavedData.isUpdateNeeded()) {
        updateBufferData(interleavedData);
    }
    VertexBuffer indices;
    if (mesh.getNumLodLevels() > 0) {
        indices = mesh.getLodLevel(lod);
    } else {
        indices = mesh.getBuffer(Type.Index);
    }
    if (instanceData != null) {
        for (VertexBuffer vb : instanceData) {
            setVertexAttrib(vb, 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);
        }
    }
    clearVertexAttribs();
    if (indices != null) {
        drawTriangleList(indices, mesh, count);
    } else {
        drawTriangleArray(mesh.getMode(), count, mesh.getVertexCount());
    }
}

Example 39 with VertexBuffer

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

the class GLRenderer method renderMeshVertexArray.

private void renderMeshVertexArray(Mesh mesh, int lod, int count, VertexBuffer instanceData) {
    if (mesh.getId() == -1) {
        updateVertexArray(mesh, instanceData);
    } else {
    // TODO: Check if it was updated
    }
    if (context.boundVertexArray != mesh.getId()) {
        gl3.glBindVertexArray(mesh.getId());
        context.boundVertexArray = mesh.getId();
    }
    //        IntMap<VertexBuffer> buffers = mesh.getBuffers();
    VertexBuffer indices;
    if (mesh.getNumLodLevels() > 0) {
        indices = mesh.getLodLevel(lod);
    } else {
        indices = mesh.getBuffer(Type.Index);
    }
    if (indices != null) {
        drawTriangleList(indices, mesh, count);
    } else {
        drawTriangleArray(mesh.getMode(), count, mesh.getVertexCount());
    }
    clearVertexAttribs();
}

Example 40 with VertexBuffer

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

the class TangentBinormalGenerator method processTriangles.

private static List<VertexData> processTriangles(Mesh mesh, int[] index, Vector3f[] v, Vector2f[] t, boolean splitMirrored) {
    IndexBuffer indexBuffer = mesh.getIndexBuffer();
    FloatBuffer vertexBuffer = (FloatBuffer) mesh.getBuffer(Type.Position).getData();
    if (mesh.getBuffer(Type.TexCoord) == null) {
        throw new IllegalArgumentException("Can only generate tangents for " + "meshes with texture coordinates");
    }
    FloatBuffer textureBuffer = (FloatBuffer) mesh.getBuffer(Type.TexCoord).getData();
    List<VertexData> vertices = initVertexData(vertexBuffer.limit() / 3);
    for (int i = 0; i < indexBuffer.size() / 3; i++) {
        for (int j = 0; j < 3; j++) {
            index[j] = indexBuffer.get(i * 3 + j);
            populateFromBuffer(v[j], vertexBuffer, index[j]);
            populateFromBuffer(t[j], textureBuffer, index[j]);
        }
        TriangleData triData = processTriangle(index, v, t);
        if (splitMirrored) {
            triData.setIndex(index);
            triData.triangleOffset = i * 3;
        }
        vertices.get(index[0]).triangles.add(triData);
        vertices.get(index[1]).triangles.add(triData);
        vertices.get(index[2]).triangles.add(triData);
    }
    return vertices;
}