build 77

[xonotic/darkplaces.git] / cpu_x86.nasm

diff --git a/cpu_x86.nasm b/cpu_x86.nasm
index aa68a74e04c9820a89dce148d29daf8289154ffb..4ab98755c40ae5257a0c5c57768809d34cff710d 100644 (file)
--- a/cpu_x86.nasm
+++ b/cpu_x86.nasm
@@ -14,11 +14,11 @@ _Mod_PointInLeaf
 ;       mnode_t         *node;
 ;       node = model->nodes;
 
-        mov     esi, dword [eax+200]
+        mov     esi, dword [eax+200] ; model->nodes
 
 ;       if (node->contents < 0)
 
-        cmp     dword [esi], 0
+        cmp     dword [esi], 0 ; node->contents
         jge     .firstvalid
 
 ;               return (mleaf_t *)node;
@@ -34,29 +34,29 @@ _Mod_PointInLeaf
 
 ;       while (1)
 
-        mov     eax, dword [esi+36]
-        mov     cl, byte [eax+16]
+        xor     ecx, ecx
+        mov     eax, dword [esi+76] ; node->plane
+        mov     cl, byte [eax+16] ; node->plane->type
 
 ;       {
 ;               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct (p,node->plane->normal)) < node->plane->dist];
 
        cmp     cl, 3
         jb      .axisplane
-        fld     dword [eax+4]
-        fmul    dword [edx+4]
-        fld     dword [eax+8]
-        fmul    dword [edx+8]
-        fld     dword [eax]
-        fmul    dword [edx]
+        fld     dword [eax+4] ; node->plane->normal[1]
+        fmul    dword [edx+4] ; p[1]
+        fld     dword [eax+8] ; node->plane->normal[2]
+        fmul    dword [edx+8] ; p[2]
+        fld     dword [eax]   ; node->plane->normal[0]
+        fmul    dword [edx]   ; p[0]
         faddp   st1, st0
         faddp   st1, st0
-        fld     dword [eax+12]
+        fld     dword [eax+12] ; node->plane->dist
         fcompp
-       xor     ecx, ecx
        fnstsw  ax
        test    ah, 65                                  ; 00000041H
        sete    cl
-        mov     esi, dword [esi+ecx*4+40]
+        mov     esi, dword [esi+ecx*4+80] ; node = node->children[condition]
 
 ;               if (node->contents < 0)
 
@@ -76,16 +76,13 @@ _Mod_PointInLeaf
        add     esp, 4
        ret     0
 .axisplane:
-       xor     ebx, ebx
-       mov     bl, cl
-        fld     dword [edx+ebx*4]
+        fld     dword [edx+ecx*4]
         fld     dword [eax+12]
         fcompp
-       xor     ecx, ecx
-       fnstsw  ax
+        fnstsw  ax
        test    ah, 65                                  ; 00000041H
        sete    cl
-        mov     esi, dword [esi+ecx*4+40]
+        mov     esi, dword [esi+ecx*4+80] ; node = node->children[condition]
 
 ;               if (node->contents < 0)