/*
=========================
RB_CalcDeformNormals
Wiggle the normals for wavy environment mapping
=========================
*/
void RB_CalcDeformNormals( deformStage_t *ds ) {
int i;
float scale;
float *xyz = ( float * ) tess.xyz;
uint32_t *normal = tess.normal;
for ( i = 0; i < tess.numVertexes; i++, xyz += 4, normal++ ) {
vec3_t fNormal;
R_VboUnpackNormal(fNormal, *normal);
scale = 0.98f;
scale = R_NoiseGet4f( xyz[0] * scale, xyz[1] * scale, xyz[2] * scale,
tess.shaderTime * ds->deformationWave.frequency );
fNormal[ 0 ] += ds->deformationWave.amplitude * scale;
scale = 0.98f;
scale = R_NoiseGet4f( 100 + xyz[0] * scale, xyz[1] * scale, xyz[2] * scale,
tess.shaderTime * ds->deformationWave.frequency );
fNormal[ 1 ] += ds->deformationWave.amplitude * scale;
scale = 0.98f;
scale = R_NoiseGet4f( 200 + xyz[0] * scale, xyz[1] * scale, xyz[2] * scale,
tess.shaderTime * ds->deformationWave.frequency );
fNormal[ 2 ] += ds->deformationWave.amplitude * scale;
VectorNormalizeFast( fNormal );
*normal = R_VboPackNormal(fNormal);
}
}
/*
=================
RB_AddIQMSurfaces
Compute vertices for this model surface
=================
*/
void RB_IQMSurfaceAnim( surfaceType_t *surface ) {
srfIQModel_t *surf = (srfIQModel_t *)surface;
iqmData_t *data = surf->data;
float jointMats[IQM_MAX_JOINTS * 12];
int i;
vec4_t *outXYZ;
uint32_t *outNormal;
#ifdef USE_VERT_TANGENT_SPACE
uint32_t *outTangent;
#endif
vec2_t (*outTexCoord)[2];
vec4_t *outColor;
iqmData_t *skeleton = R_GetIQMModelDataByHandle( backEnd.currentEntity->e.frameModel, data );
iqmData_t *oldSkeleton = R_GetIQMModelDataByHandle( backEnd.currentEntity->e.oldframeModel, data );
int frame = skeleton->num_frames ? backEnd.currentEntity->e.frame % skeleton->num_frames : 0;
int oldframe = oldSkeleton->num_frames ? backEnd.currentEntity->e.oldframe % oldSkeleton->num_frames : 0;
float backlerp = backEnd.currentEntity->e.backlerp;
int *tri;
glIndex_t *ptr;
glIndex_t base;
if ( data != skeleton && data->num_joints != skeleton->num_poses ) {
ri.Printf( PRINT_WARNING, "WARNING: frameModel '%s' for model '%s' has different number of joints\n",
R_GetModelByHandle( backEnd.currentEntity->e.frameModel )->name, R_GetModelByHandle( backEnd.currentEntity->e.hModel )->name );
skeleton = data;
}
if ( data != oldSkeleton && data->num_joints != oldSkeleton->num_poses ) {
ri.Printf( PRINT_WARNING, "WARNING: oldframeModel '%s' for model '%s' has different number of joints\n",
R_GetModelByHandle( backEnd.currentEntity->e.oldframeModel )->name, R_GetModelByHandle( backEnd.currentEntity->e.hModel )->name );
oldSkeleton = data;
}
RB_CHECKOVERFLOW( surf->num_vertexes, surf->num_triangles * 3 );
outXYZ = &tess.xyz[tess.numVertexes];
outNormal = &tess.normal[tess.numVertexes];
#ifdef USE_VERT_TANGENT_SPACE
outTangent = &tess.tangent[tess.numVertexes];
#endif
outTexCoord = &tess.texCoords[tess.numVertexes];
outColor = &tess.vertexColors[tess.numVertexes];
// compute interpolated joint matrices
if ( skeleton->num_poses > 0 ) {
ComputePoseMats( data, skeleton, oldSkeleton, frame, oldframe, backlerp, jointMats );
}
// transform vertexes and fill other data
for( i = 0; i < surf->num_vertexes;
i++, outXYZ++, outNormal++, outTexCoord++, outColor++ ) {
int j, k;
float vtxMat[12];
float nrmMat[9];
int vtx = i + surf->first_vertex;
float blendWeights[4];
int numWeights;
for ( numWeights = 0; numWeights < 4; numWeights++ ) {
if ( data->blendWeightsType == IQM_FLOAT )
blendWeights[numWeights] = data->blendWeights.f[4*vtx + numWeights];
else
blendWeights[numWeights] = (float)data->blendWeights.b[4*vtx + numWeights] / 255.0f;
if ( blendWeights[numWeights] <= 0 )
break;
}
if ( skeleton->num_poses == 0 || numWeights == 0 ) {
// no blend joint, use identity matrix.
Com_Memcpy( vtxMat, identityMatrix, 12 * sizeof (float) );
} else {
// compute the vertex matrix by blending the up to
// four blend weights
Com_Memset( vtxMat, 0, 12 * sizeof (float) );
for( j = 0; j < numWeights; j++ ) {
for( k = 0; k < 12; k++ ) {
vtxMat[k] += blendWeights[j] * jointMats[12*data->blendIndexes[4*vtx + j] + k];
}
}
}
// compute the normal matrix as transpose of the adjoint
// of the vertex matrix
nrmMat[ 0] = vtxMat[ 5]*vtxMat[10] - vtxMat[ 6]*vtxMat[ 9];
nrmMat[ 1] = vtxMat[ 6]*vtxMat[ 8] - vtxMat[ 4]*vtxMat[10];
nrmMat[ 2] = vtxMat[ 4]*vtxMat[ 9] - vtxMat[ 5]*vtxMat[ 8];
nrmMat[ 3] = vtxMat[ 2]*vtxMat[ 9] - vtxMat[ 1]*vtxMat[10];
nrmMat[ 4] = vtxMat[ 0]*vtxMat[10] - vtxMat[ 2]*vtxMat[ 8];
nrmMat[ 5] = vtxMat[ 1]*vtxMat[ 8] - vtxMat[ 0]*vtxMat[ 9];
nrmMat[ 6] = vtxMat[ 1]*vtxMat[ 6] - vtxMat[ 2]*vtxMat[ 5];
nrmMat[ 7] = vtxMat[ 2]*vtxMat[ 4] - vtxMat[ 0]*vtxMat[ 6];
nrmMat[ 8] = vtxMat[ 0]*vtxMat[ 5] - vtxMat[ 1]*vtxMat[ 4];
(*outTexCoord)[0][0] = data->texcoords[2*vtx + 0];
(*outTexCoord)[0][1] = data->texcoords[2*vtx + 1];
(*outTexCoord)[1][0] = (*outTexCoord)[0][0];
(*outTexCoord)[1][1] = (*outTexCoord)[0][1];
(*outXYZ)[0] =
vtxMat[ 0] * data->positions[3*vtx+0] +
vtxMat[ 1] * data->positions[3*vtx+1] +
vtxMat[ 2] * data->positions[3*vtx+2] +
vtxMat[ 3];
(*outXYZ)[1] =
vtxMat[ 4] * data->positions[3*vtx+0] +
vtxMat[ 5] * data->positions[3*vtx+1] +
vtxMat[ 6] * data->positions[3*vtx+2] +
vtxMat[ 7];
(*outXYZ)[2] =
vtxMat[ 8] * data->positions[3*vtx+0] +
vtxMat[ 9] * data->positions[3*vtx+1] +
vtxMat[10] * data->positions[3*vtx+2] +
vtxMat[11];
(*outXYZ)[3] = 1.0f;
{
vec3_t normal;
vec4_t tangent;
normal[0] = DotProduct(&nrmMat[0], &data->normals[3*vtx]);
normal[1] = DotProduct(&nrmMat[3], &data->normals[3*vtx]);
normal[2] = DotProduct(&nrmMat[6], &data->normals[3*vtx]);
*outNormal = R_VboPackNormal(normal);
#ifdef USE_VERT_TANGENT_SPACE
tangent[0] = DotProduct(&nrmMat[0], &data->tangents[4*vtx]);
tangent[1] = DotProduct(&nrmMat[3], &data->tangents[4*vtx]);
tangent[2] = DotProduct(&nrmMat[6], &data->tangents[4*vtx]);
tangent[3] = data->tangents[4*vtx+3];
*outTangent++ = R_VboPackTangent(tangent);
#endif
}
(*outColor)[0] = data->colors[4*vtx+0] / 255.0f;
(*outColor)[1] = data->colors[4*vtx+1] / 255.0f;
(*outColor)[2] = data->colors[4*vtx+2] / 255.0f;
(*outColor)[3] = data->colors[4*vtx+3] / 255.0f;
}
tri = data->triangles + 3 * surf->first_triangle;
ptr = &tess.indexes[tess.numIndexes];
base = tess.numVertexes;
for( i = 0; i < surf->num_triangles; i++ ) {
*ptr++ = base + (*tri++ - surf->first_vertex);
*ptr++ = base + (*tri++ - surf->first_vertex);
*ptr++ = base + (*tri++ - surf->first_vertex);
}
tess.numIndexes += 3 * surf->num_triangles;
tess.numVertexes += surf->num_vertexes;
}
