mod_skeletal_animatevertices_generic.c

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#include "mod_skeletal_animatevertices_generic.h"
 
void Mod_Skeletal_AnimateVertices_Generic(const model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT vertex3f, float * RESTRICT normal3f, float * RESTRICT svector3f, float * RESTRICT tvector3f)
{
    // vertex weighted skeletal
    int i, k;
    float *bonepose;
    float *boneposerelative;
    const blendweights_t * RESTRICT weights;
 
    //unsigned long long ts = rdtsc();
    bonepose = (float *) Mod_Skeletal_AnimateVertices_AllocBuffers(sizeof(float[12]) * (model->num_bones*2 + model->surfmesh.num_blends));
    boneposerelative = bonepose + model->num_bones * 12;
 
    Mod_Skeletal_BuildTransforms(model, frameblend, skeleton, bonepose, boneposerelative);
 
    // generate matrices for all blend combinations
    weights = model->surfmesh.data_blendweights;
    for (i = 0;i < model->surfmesh.num_blends;i++, weights++)
    {
        float * RESTRICT b = boneposerelative + 12 * (model->num_bones + i);
        const float * RESTRICT m = boneposerelative + 12 * (unsigned int)weights->index[0];
        float f = weights->influence[0] * (1.0f / 255.0f);
        b[ 0] = f*m[ 0]; b[ 1] = f*m[ 1]; b[ 2] = f*m[ 2]; b[ 3] = f*m[ 3];
        b[ 4] = f*m[ 4]; b[ 5] = f*m[ 5]; b[ 6] = f*m[ 6]; b[ 7] = f*m[ 7];
        b[ 8] = f*m[ 8]; b[ 9] = f*m[ 9]; b[10] = f*m[10]; b[11] = f*m[11];
        for (k = 1;k < 4 && weights->influence[k];k++)
        {
            m = boneposerelative + 12 * (unsigned int)weights->index[k];
            f = weights->influence[k] * (1.0f / 255.0f);
            b[ 0] += f*m[ 0]; b[ 1] += f*m[ 1]; b[ 2] += f*m[ 2]; b[ 3] += f*m[ 3];
            b[ 4] += f*m[ 4]; b[ 5] += f*m[ 5]; b[ 6] += f*m[ 6]; b[ 7] += f*m[ 7];
            b[ 8] += f*m[ 8]; b[ 9] += f*m[ 9]; b[10] += f*m[10]; b[11] += f*m[11];
        }
    }
 
#define LOAD_MATRIX_SCALAR() const float * RESTRICT m = boneposerelative + 12 * (unsigned int)*b
 
#define LOAD_MATRIX3() \
    LOAD_MATRIX_SCALAR()
#define LOAD_MATRIX4() \
    LOAD_MATRIX_SCALAR()
 
#define TRANSFORM_POSITION_SCALAR(in, out) \
    (out)[0] = ((in)[0] * m[0] + (in)[1] * m[1] + (in)[2] * m[ 2] + m[3]); \
    (out)[1] = ((in)[0] * m[4] + (in)[1] * m[5] + (in)[2] * m[ 6] + m[7]); \
    (out)[2] = ((in)[0] * m[8] + (in)[1] * m[9] + (in)[2] * m[10] + m[11]);
#define TRANSFORM_VECTOR_SCALAR(in, out) \
    (out)[0] = ((in)[0] * m[0] + (in)[1] * m[1] + (in)[2] * m[ 2]); \
    (out)[1] = ((in)[0] * m[4] + (in)[1] * m[5] + (in)[2] * m[ 6]); \
    (out)[2] = ((in)[0] * m[8] + (in)[1] * m[9] + (in)[2] * m[10]);
 
#define TRANSFORM_POSITION(in, out) \
    TRANSFORM_POSITION_SCALAR(in, out)
#define TRANSFORM_VECTOR(in, out) \
    TRANSFORM_VECTOR_SCALAR(in, out)
 
    // transform vertex attributes by blended matrices
    if (vertex3f)
    {
        const float * RESTRICT v = model->surfmesh.data_vertex3f;
        const unsigned short * RESTRICT b = model->surfmesh.blends;
        // special case common combinations of attributes to avoid repeated loading of matrices
        if (normal3f)
        {
            const float * RESTRICT n = model->surfmesh.data_normal3f;
            if (svector3f && tvector3f)
            {
                const float * RESTRICT svec = model->surfmesh.data_svector3f;
                const float * RESTRICT tvec = model->surfmesh.data_tvector3f;
 
                // Note that for SSE each iteration stores one element past end, so we break one vertex short
                // and handle that with scalars in that case
                for (i = 0; i < model->surfmesh.num_vertices; i++, v += 3, n += 3, svec += 3, tvec += 3, b++,
                        vertex3f += 3, normal3f += 3, svector3f += 3, tvector3f += 3)
                {
                    LOAD_MATRIX4();
                    TRANSFORM_POSITION(v, vertex3f);
                    TRANSFORM_VECTOR(n, normal3f);
                    TRANSFORM_VECTOR(svec, svector3f);
                    TRANSFORM_VECTOR(tvec, tvector3f);
                }
 
                return;
            }
 
            for (i = 0;i < model->surfmesh.num_vertices; i++, v += 3, n += 3, b++, vertex3f += 3, normal3f += 3)
            {
                LOAD_MATRIX4();
                TRANSFORM_POSITION(v, vertex3f);
                TRANSFORM_VECTOR(n, normal3f);
            }
        }
        else
        {
            for (i = 0;i < model->surfmesh.num_vertices; i++, v += 3, b++, vertex3f += 3)
            {
                LOAD_MATRIX4();
                TRANSFORM_POSITION(v, vertex3f);
            }
        }
    }
 
    else if (normal3f)
    {
        const float * RESTRICT n = model->surfmesh.data_normal3f;
        const unsigned short * RESTRICT b = model->surfmesh.blends;
        for (i = 0; i < model->surfmesh.num_vertices; i++, n += 3, b++, normal3f += 3)
        {
            LOAD_MATRIX3();
            TRANSFORM_VECTOR(n, normal3f);
        }
    }
 
    if (svector3f)
    {
        const float * RESTRICT svec = model->surfmesh.data_svector3f;
        const unsigned short * RESTRICT b = model->surfmesh.blends;
        for (i = 0; i < model->surfmesh.num_vertices; i++, svec += 3, b++, svector3f += 3)
        {
            LOAD_MATRIX3();
            TRANSFORM_VECTOR(svec, svector3f);
        }
    }
 
    if (tvector3f)
    {
        const float * RESTRICT tvec = model->surfmesh.data_tvector3f;
        const unsigned short * RESTRICT b = model->surfmesh.blends;
        for (i = 0; i < model->surfmesh.num_vertices; i++, tvec += 3, b++, tvector3f += 3)
        {
            LOAD_MATRIX3();
            TRANSFORM_VECTOR(tvec, tvector3f);
        }
    }
}