From 2c2ded837d521446697135f4d5d6588cf6fc5a73 Mon Sep 17 00:00:00 2001
From: XProger <xproger@list.ru>
Date: Sun, 14 Nov 2021 15:51:03 +0300
Subject: [PATCH] #370 minor fix

---
 src/fixed/draw.h              |  4 +++-
 src/platform/3do/unpackMesh.s | 44 +++++++++++++++++------------------
 2 files changed, 25 insertions(+), 23 deletions(-)

diff --git a/src/fixed/draw.h b/src/fixed/draw.h
index f7e2292..954e510 100644
--- a/src/fixed/draw.h
+++ b/src/fixed/draw.h
@@ -218,10 +218,10 @@ void drawMesh(int32 meshIndex)
         vIntensity = (uint16*)ptr;
         ptr += vCount * sizeof(uint16);
     }
-#endif
 
     if (MAX_VERTICES - gVerticesCount < vCount)
         return;
+#endif
 
     if (MAX_FACES - gFacesCount < mesh->rCount + mesh->tCount + mesh->crCount + mesh->ctCount)
         return;
@@ -757,8 +757,10 @@ void drawRoom(const Room* room, Camera* camera)
     const RoomInfo* info = room->info;
     const RoomData& data = room->data;
 
+#ifndef __3DO__
     if (MAX_VERTICES - gVerticesCount < info->verticesCount)
         return;
+#endif
 
     if (MAX_FACES - gFacesCount < info->quadsCount + info->trianglesCount)
         return;
diff --git a/src/platform/3do/unpackMesh.s b/src/platform/3do/unpackMesh.s
index e18e446..08f3f38 100644
--- a/src/platform/3do/unpackMesh.s
+++ b/src/platform/3do/unpackMesh.s
@@ -10,13 +10,13 @@ unpackMesh_asm__FPC10MeshVertexl
 vertices RN r0
 vptr     RN r5
 vCount   RN r1
-cx       RN r2
-cy       RN r3
-cz       RN r4
+cx       RN r8
+cy       RN r9
+cz       RN r10
 last     RN lr
-n0       RN r6
-n1       RN r8
-n2       RN r10
+n0       RN r3
+n1       RN r5
+n2       RN r7
 res      RN r1
 DOT3_F16 EQU 0x5000C
 
@@ -24,22 +24,22 @@ DOT3_F16 EQU 0x5000C
         add last, vertices, vCount, lsl #2
         add last, last, vCount, lsl #1
         mov vptr, vertices  ; save vertices ptr
-        ldr r2, =matrixPtr
-        ldr r8, [r2]        ; &m.e00
-        add r2, r8, #36     ; &m.e03
+        ldr r4, =matrixPtr
+        ldr r7, [r4]        ; &m.e00
+        add r4, r7, #36     ; &m.e03
 
-        mov r0, r2
-        add r1, r8, #24     ; &m.e02
+        mov r0, r4
+        add r1, r7, #24     ; &m.e02
         swi DOT3_F16
         mov cz, r0, asr #10
 
-        mov r0, r2
-        add r1, r8, #12     ; &m.e01
+        mov r0, r4
+        add r1, r7, #12     ; &m.e01
         swi DOT3_F16
         mov cy, r0, asr #10
 
-        mov r0, r2
-        mov r1, r8          ; &m.e00
+        mov r0, r4
+        mov r1, r7          ; &m.e00
         swi DOT3_F16
         mov cx, r0, asr #10
 
@@ -49,19 +49,19 @@ DOT3_F16 EQU 0x5000C
 loop    ldmia vertices!, {n0, n1, n2} ; load two encoded vertices
         cmp vertices, last
 
-        add r5, cx, n0, asr #16
+        add r2, cx, n0, asr #16 ; x
         mov n0, n0, lsl #16
-        add r6, cy, n0, asr #16
+        add r3, cy, n0, asr #16 ; y
 
-        add r7, cz, n1, asr #16
+        add r4, cz, n1, asr #16 ; z
         mov n1, n1, lsl #16
-        add r8, cx, n1, asr #16
+        add r5, cx, n1, asr #16 ; x
 
-        add r9, cy, n2, asr #16
+        add r6, cy, n2, asr #16 ; y
         mov n2, n2, lsl #16
-        add r10, cz, n2, asr #16
+        add r7, cz, n2, asr #16 ; z
 
-        stmia res!, {r5, r6, r7, r8, r9, r10}
+        stmia res!, {r2, r3, r4, r5, r6, r7}
         blt loop
 
         ldmfd sp!, {r4-r10, pc}