optimized surface rendering to surface->groupmesh->data_* array pointers directly...

[xonotic/darkplaces.git] / model_shared.c

diff --git a/model_shared.c b/model_shared.c
index 5064ac4b24189821c84c5cc2d886a50069e3db2e..9e8200fa96e1de07783e9258de1b6dfcecc8058d 100644 (file)
--- a/model_shared.c
+++ b/model_shared.c
@@ -612,13 +612,13 @@ void Mod_ValidateElements(const int *elements, int numtriangles, int numverts, c
 }
 
 // warning: this is an expensive function!
-void Mod_BuildNormals(int numverts, int numtriangles, const float *vertex3f, const int *elements, float *normal3f)
+void Mod_BuildNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const int *elements, float *normal3f)
 {
        int i, tnum;
        float normal[3], *v;
        const int *e;
        // clear the vectors
-       memset(normal3f, 0, numverts * sizeof(float[3]));
+       memset(normal3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
        // process each vertex of each triangle and accumulate the results
        for (tnum = 0, e = elements;tnum < numtriangles;tnum++, e += 3)
        {
@@ -639,7 +639,7 @@ void Mod_BuildNormals(int numverts, int numtriangles, const float *vertex3f, con
        }
        // now we could divide the vectors by the number of averaged values on
        // each vertex...  but instead normalize them
-       for (i = 0, v = normal3f;i < numverts;i++, v += 3)
+       for (i = 0, v = normal3f + 3 * firstvertex;i < numvertices;i++, v += 3)
                VectorNormalize(v);
 }
 
@@ -693,18 +693,18 @@ void Mod_BuildBumpVectors(const float *v0, const float *v1, const float *v2, con
 }
 
 // warning: this is a very expensive function!
-void Mod_BuildTextureVectorsAndNormals(int numverts, int numtriangles, const float *vertex3f, const float *texcoord2f, const int *elements, float *svector3f, float *tvector3f, float *normal3f)
+void Mod_BuildTextureVectorsAndNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const float *texcoord2f, const int *elements, float *svector3f, float *tvector3f, float *normal3f)
 {
        int i, tnum;
        float sdir[3], tdir[3], normal[3], *v;
        const int *e;
        // clear the vectors
        if (svector3f)
-               memset(svector3f, 0, numverts * sizeof(float[3]));
+               memset(svector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
        if (tvector3f)
-               memset(tvector3f, 0, numverts * sizeof(float[3]));
+               memset(tvector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
        if (normal3f)
-               memset(normal3f, 0, numverts * sizeof(float[3]));
+               memset(normal3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
        // process each vertex of each triangle and accumulate the results
        for (tnum = 0, e = elements;tnum < numtriangles;tnum++, e += 3)
        {
@@ -741,15 +741,15 @@ void Mod_BuildTextureVectorsAndNormals(int numverts, int numtriangles, const flo
        // each vertex...  but instead normalize them
        // 4 assignments, 1 divide, 1 sqrt, 2 adds, 6 multiplies
        if (svector3f)
-               for (i = 0, v = svector3f;i < numverts;i++, v += 3)
+               for (i = 0, v = svector3f + 3 * firstvertex;i < numvertices;i++, v += 3)
                        VectorNormalize(v);
        // 4 assignments, 1 divide, 1 sqrt, 2 adds, 6 multiplies
        if (tvector3f)
-               for (i = 0, v = tvector3f;i < numverts;i++, v += 3)
+               for (i = 0, v = tvector3f + 3 * firstvertex;i < numvertices;i++, v += 3)
                        VectorNormalize(v);
        // 4 assignments, 1 divide, 1 sqrt, 2 adds, 6 multiplies
        if (normal3f)
-               for (i = 0, v = normal3f;i < numverts;i++, v += 3)
+               for (i = 0, v = normal3f + 3 * firstvertex;i < numvertices;i++, v += 3)
                        VectorNormalize(v);
 }
 
@@ -757,7 +757,7 @@ surfmesh_t *Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriang
 {
        surfmesh_t *mesh;
        qbyte *data;
-       mesh = Mem_Alloc(mempool, sizeof(surfmesh_t) + numvertices * (3 + 3 + 3 + 3 + 2 + 2 + (detailtexcoords ? 2 : 0) + (vertexcolors ? 4 : 0)) * sizeof(float) + numvertices * (lightmapoffsets ? 1 : 0) * sizeof(int) + numtriangles * (3 + (neighbors ? 3 : 0)) * sizeof(int));
+       mesh = Mem_Alloc(mempool, sizeof(surfmesh_t) + numvertices * (3 + 3 + 3 + 3 + 2 + 2 + (detailtexcoords ? 2 : 0) + (vertexcolors ? 4 : 0)) * sizeof(float) + numvertices * (lightmapoffsets ? 1 : 0) * sizeof(int) + numtriangles * (3 + 3 + (neighbors ? 3 : 0)) * sizeof(int));
        mesh->num_vertices = numvertices;
        mesh->num_triangles = numtriangles;
        data = (qbyte *)(mesh + 1);
@@ -778,6 +778,7 @@ surfmesh_t *Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriang
        }
        if (mesh->num_triangles)
        {
+               mesh->data_element3i = (int *)data, data += sizeof(int[3]) * mesh->num_triangles;
                mesh->data_element3i = (int *)data, data += sizeof(int[3]) * mesh->num_triangles;
                if (neighbors)
                        mesh->data_neighbor3i = (int *)data, data += sizeof(int[3]) * mesh->num_triangles;