/*
=================
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;
int frame = data->num_frames ? backEnd.currentEntity->e.frame % data->num_frames : 0;
int oldframe = data->num_frames ? backEnd.currentEntity->e.oldframe % data->num_frames : 0;
float backlerp = backEnd.currentEntity->e.backlerp;
int *tri;
glIndex_t *ptr;
glIndex_t base;
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 ( data->num_poses > 0 ) {
ComputePoseMats( data, 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 ( data->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]);
R_VaoPackNormal((byte *)outNormal, 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];
R_VaoPackTangent((byte *)outTangent++, 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;
}
/*
============
R_CreateVao2
============
*/
vao_t *R_CreateVao2(const char *name, int numVertexes, srfVert_t *verts, int numIndexes, glIndex_t *indexes)
{
vao_t *vao;
int i;
byte *data;
int dataSize;
int dataOfs;
int glUsage = GL_STATIC_DRAW;
if(!numVertexes || !numIndexes)
return NULL;
if(strlen(name) >= MAX_QPATH)
{
ri.Error(ERR_DROP, "R_CreateVao2: \"%s\" is too long", name);
}
if ( tr.numVaos == MAX_VAOS ) {
ri.Error( ERR_DROP, "R_CreateVao2: MAX_VAOS hit");
}
R_IssuePendingRenderCommands();
vao = tr.vaos[tr.numVaos] = ri.Hunk_Alloc(sizeof(*vao), h_low);
tr.numVaos++;
memset(vao, 0, sizeof(*vao));
Q_strncpyz(vao->name, name, sizeof(vao->name));
// since these vertex attributes are never altered, interleave them
vao->attribs[ATTR_INDEX_POSITION ].enabled = 1;
vao->attribs[ATTR_INDEX_NORMAL ].enabled = 1;
#ifdef USE_VERT_TANGENT_SPACE
vao->attribs[ATTR_INDEX_TANGENT ].enabled = 1;
#endif
vao->attribs[ATTR_INDEX_TEXCOORD ].enabled = 1;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].enabled = 1;
vao->attribs[ATTR_INDEX_COLOR ].enabled = 1;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].enabled = 1;
vao->attribs[ATTR_INDEX_POSITION ].count = 3;
vao->attribs[ATTR_INDEX_NORMAL ].count = 4;
vao->attribs[ATTR_INDEX_TANGENT ].count = 4;
vao->attribs[ATTR_INDEX_TEXCOORD ].count = 2;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].count = 2;
vao->attribs[ATTR_INDEX_COLOR ].count = 4;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].count = 4;
vao->attribs[ATTR_INDEX_POSITION ].type = GL_FLOAT;
vao->attribs[ATTR_INDEX_NORMAL ].type = glRefConfig.packedNormalDataType;
vao->attribs[ATTR_INDEX_TANGENT ].type = glRefConfig.packedNormalDataType;
vao->attribs[ATTR_INDEX_TEXCOORD ].type = glRefConfig.packedTexcoordDataType;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].type = glRefConfig.packedTexcoordDataType;
vao->attribs[ATTR_INDEX_COLOR ].type = glRefConfig.packedColorDataType;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].type = glRefConfig.packedNormalDataType;
vao->attribs[ATTR_INDEX_POSITION ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_NORMAL ].normalized = GL_TRUE;
vao->attribs[ATTR_INDEX_TANGENT ].normalized = GL_TRUE;
vao->attribs[ATTR_INDEX_TEXCOORD ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_COLOR ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].normalized = GL_TRUE;
vao->attribs[ATTR_INDEX_POSITION ].offset = 0; dataSize = sizeof(verts[0].xyz);
vao->attribs[ATTR_INDEX_NORMAL ].offset = dataSize; dataSize += sizeof(uint32_t);
#ifdef USE_VERT_TANGENT_SPACE
vao->attribs[ATTR_INDEX_TANGENT ].offset = dataSize; dataSize += sizeof(uint32_t);
#endif
vao->attribs[ATTR_INDEX_TEXCOORD ].offset = dataSize; dataSize += glRefConfig.packedTexcoordDataSize;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].offset = dataSize; dataSize += glRefConfig.packedTexcoordDataSize;
vao->attribs[ATTR_INDEX_COLOR ].offset = dataSize; dataSize += glRefConfig.packedColorDataSize;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].offset = dataSize; dataSize += sizeof(uint32_t);
vao->attribs[ATTR_INDEX_POSITION ].stride = dataSize;
vao->attribs[ATTR_INDEX_NORMAL ].stride = dataSize;
vao->attribs[ATTR_INDEX_TANGENT ].stride = dataSize;
vao->attribs[ATTR_INDEX_TEXCOORD ].stride = dataSize;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].stride = dataSize;
vao->attribs[ATTR_INDEX_COLOR ].stride = dataSize;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].stride = dataSize;
if (glRefConfig.vertexArrayObject)
{
qglGenVertexArrays(1, &vao->vao);
qglBindVertexArray(vao->vao);
}
// create VBO
dataSize *= numVertexes;
data = ri.Hunk_AllocateTempMemory(dataSize);
dataOfs = 0;
for (i = 0; i < numVertexes; i++)
{
// xyz
memcpy(data + dataOfs, &verts[i].xyz, sizeof(verts[i].xyz));
dataOfs += sizeof(verts[i].xyz);
// normal
dataOfs += R_VaoPackNormal(data + dataOfs, verts[i].normal);
#ifdef USE_VERT_TANGENT_SPACE
// tangent
dataOfs += R_VaoPackTangent(data + dataOfs, verts[i].tangent);
#endif
// texcoords
dataOfs += R_VaoPackTexCoord(data + dataOfs, verts[i].st);
// lightmap texcoords
dataOfs += R_VaoPackTexCoord(data + dataOfs, verts[i].lightmap);
// colors
dataOfs += R_VaoPackColors(data + dataOfs, verts[i].vertexColors);
// light directions
dataOfs += R_VaoPackNormal(data + dataOfs, verts[i].lightdir);
}
vao->vertexesSize = dataSize;
qglGenBuffers(1, &vao->vertexesVBO);
qglBindBuffer(GL_ARRAY_BUFFER, vao->vertexesVBO);
qglBufferData(GL_ARRAY_BUFFER, vao->vertexesSize, data, glUsage);
// create IBO
vao->indexesSize = numIndexes * sizeof(glIndex_t);
qglGenBuffers(1, &vao->indexesIBO);
qglBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vao->indexesIBO);
qglBufferData(GL_ELEMENT_ARRAY_BUFFER, vao->indexesSize, indexes, glUsage);
Vao_SetVertexPointers(vao);
glState.currentVao = vao;
GL_CheckErrors();
ri.Hunk_FreeTempMemory(data);
return vao;
}
