From: John Tsiombikas <nuclear@mutantstargoat.com>
Date: Fri, 1 Mar 2019 13:44:40 +0000 (+0200)
Subject: foo
X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=vrtris;a=commitdiff_plain;h=e50e34cb3791268a6665e3970ed76d2ad0d7aed2

foo
---

diff --git a/src/cmesh.c b/src/cmesh.c
index 993fa2c..e40e4f4 100644
--- a/src/cmesh.c
+++ b/src/cmesh.c
@@ -1296,9 +1296,14 @@ int cmesh_dump_obj(struct cmesh *cm, const char *fname)
 	return -1;
 }
 
+#define HAS_VN	1
+#define HAS_VT	2
+
 int cmesh_dump_obj_file(struct cmesh *cm, FILE *fp, int voffs)
 {
+	static const char *fmtstr[] = {" %u", " %u//%u", " %u/%u", " %u/%u/%u"};
 	int i, j, num, nelem;
+	unsigned int aflags = 0;
 
 	if(!cmesh_has_attrib(cm, CMESH_ATTR_VERTEX)) {
 		return -1;
@@ -1315,6 +1320,7 @@ int cmesh_dump_obj_file(struct cmesh *cm, FILE *fp, int voffs)
 	}
 
 	if(cmesh_has_attrib(cm, CMESH_ATTR_NORMAL)) {
+		aflags |= HAS_VN;
 		nelem = cm->vattr[CMESH_ATTR_NORMAL].nelem;
 		if((num = dynarr_size(cm->vattr[CMESH_ATTR_NORMAL].data)) != cm->nverts * nelem) {
 			warning_log("normal array size (%d) != nverts (%d)\n", num, cm->nverts);
@@ -1326,6 +1332,7 @@ int cmesh_dump_obj_file(struct cmesh *cm, FILE *fp, int voffs)
 	}
 
 	if(cmesh_has_attrib(cm, CMESH_ATTR_TEXCOORD)) {
+		aflags |= HAS_VT;
 		nelem = cm->vattr[CMESH_ATTR_TEXCOORD].nelem;
 		if((num = dynarr_size(cm->vattr[CMESH_ATTR_TEXCOORD].data)) != cm->nverts * nelem) {
 			warning_log("texcoord array size (%d) != nverts (%d)\n", num, cm->nverts);
@@ -1346,7 +1353,7 @@ int cmesh_dump_obj_file(struct cmesh *cm, FILE *fp, int voffs)
 			fputc('f', fp);
 			for(j=0; j<3; j++) {
 				unsigned int idx = *idxptr++ + 1 + voffs;
-				fprintf(fp, " %u/%u/%u", idx, idx, idx);
+				fprintf(fp, fmtstr[aflags], idx, idx, idx);
 			}
 			fputc('\n', fp);
 		}
@@ -1356,7 +1363,7 @@ int cmesh_dump_obj_file(struct cmesh *cm, FILE *fp, int voffs)
 		for(i=0; i<numtri; i++) {
 			fputc('f', fp);
 			for(j=0; j<3; j++) {
-				fprintf(fp, " %u/%u/%u", idx, idx, idx);
+				fprintf(fp, fmtstr[aflags], idx, idx, idx);
 				++idx;
 			}
 			fputc('\n', fp);
diff --git a/src/gamescr.c b/src/gamescr.c
index cc1a837..5fb7b02 100644
--- a/src/gamescr.c
+++ b/src/gamescr.c
@@ -45,6 +45,7 @@ static int init(void)
 		fprintf(stderr, "failed to load block model\n");
 		return -1;
 	}
+	cmesh_dump(blkmesh, "dump");
 	cmesh_dump_obj(blkmesh, "dump.obj");
 	return 0;
 }
diff --git a/src/meshload.c b/src/meshload.c
index ef596a1..ff398aa 100644
--- a/src/meshload.c
+++ b/src/meshload.c
@@ -35,6 +35,7 @@ int cmesh_load(struct cmesh *mesh, const char *fname)
 {
 	int i, line_num = 0, result = -1;
 	int found_quad = 0;
+	int found_color = 0;
 	FILE *fp = 0;
 	char buf[256];
 	struct vertex_pos_color *varr = 0;
@@ -78,6 +79,7 @@ int cmesh_load(struct cmesh *mesh, const char *fname)
 					fprintf(stderr, "%s:%d: invalid vertex definition: \"%s\"\n", fname, line_num, line);
 					goto err;
 				}
+				if(num > 3) found_color = 1;
 				switch(num) {
 				case 3:
 					v.r = 1.0f;
@@ -141,6 +143,7 @@ int cmesh_load(struct cmesh *mesh, const char *fname)
 
 					if((node = rb_find(rbtree, &fv))) {
 						unsigned int idx = (unsigned int)node->data;
+						assert(idx < cmesh_attrib_count(mesh, CMESH_ATTR_VERTEX));
 						if(cmesh_push_index(mesh, idx) == -1) {
 							fprintf(stderr, "load_mesh: failed to resize index array\n");
 							goto err;
@@ -149,26 +152,33 @@ int cmesh_load(struct cmesh *mesh, const char *fname)
 						unsigned int newidx = cmesh_attrib_count(mesh, CMESH_ATTR_VERTEX);
 						struct facevertex *newfv;
 						struct vertex_pos_color *vptr = varr + fv.vidx;
-						float tu, tv;
 
 						if(cmesh_push_attrib3f(mesh, CMESH_ATTR_VERTEX, vptr->x, vptr->y, vptr->z) == -1) {
 							fprintf(stderr, "load_mesh: failed to resize vertex array\n");
 							goto err;
 						}
-						if(cmesh_push_attrib(mesh, CMESH_ATTR_COLOR, &vptr->r) == -1) {
-							fprintf(stderr, "load_mesh: failed to resize color array\n");
-							goto err;
+						if(found_color) {
+							if(cmesh_push_attrib(mesh, CMESH_ATTR_COLOR, &vptr->r) == -1) {
+								fprintf(stderr, "load_mesh: failed to resize color array\n");
+								goto err;
+							}
 						}
-						if(fv.tidx >= 0) {
-							tu = tarr[fv.tidx].x;
-							tv = tarr[fv.tidx].y;
-						} else {
-							tu = vptr->x;
-							tv = vptr->y;
+						if(fv.nidx >= 0) {
+							float nx = narr[fv.nidx].x;
+							float ny = narr[fv.nidx].y;
+							float nz = narr[fv.nidx].z;
+							if(cmesh_push_attrib3f(mesh, CMESH_ATTR_NORMAL, nx, ny, nz) == -1) {
+								fprintf(stderr, "load_mesh: failed to resize normal array\n");
+								goto err;
+							}
 						}
-						if(cmesh_push_attrib2f(mesh, CMESH_ATTR_TEXCOORD, tu, tv) == -1) {
-							fprintf(stderr, "load_mesh: failed to resize texcoord array\n");
-							goto err;
+						if(fv.tidx >= 0) {
+							float tu = tarr[fv.tidx].x;
+							float tv = tarr[fv.tidx].y;
+							if(cmesh_push_attrib2f(mesh, CMESH_ATTR_TEXCOORD, tu, tv) == -1) {
+								fprintf(stderr, "load_mesh: failed to resize texcoord array\n");
+								goto err;
+							}
 						}
 
 						if((newfv = malloc(sizeof *newfv))) {