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Fix: Prevent out-of-bounds LOD access in HLOD rendering #399

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Fix: Prevent out-of-bounds LOD access in HLOD rendering #399

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25 changes: 19 additions & 6 deletions Generals/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2144,9 +2144,16 @@ void HLodClass::Render(RenderInfoClass & rinfo)

Animatable3DObjClass::Render(rinfo);

for (i = 0; i < Lod[CurLod].Count(); i++) {
if (Lod[CurLod][i].Model->Class_ID() != CLASSID_OBBOX) ///We have no use for these - MW
Lod[CurLod][i].Model->Render(rinfo);
int lod_count = LodCount;
int lod_index = CurLod;
if (lod_index >= lod_count || lod_index < 0) {
lod_index = lod_count - 1;
}
if (lod_index >= 0 && lod_index < lod_count) {
for (i = 0; i < Lod[lod_index].Count(); i++) {
if (Lod[lod_index][i].Model->Class_ID() != CLASSID_OBBOX) ///We have no use for these - MW
Lod[lod_index][i].Model->Render(rinfo);
}
}

if (Is_Sub_Objects_Match_LOD_Enabled()) {
Expand Down Expand Up @@ -2183,13 +2190,19 @@ void HLodClass::Special_Render(SpecialRenderInfoClass & rinfo)

Animatable3DObjClass::Special_Render(rinfo);

int lod_count = LodCount;
int lod_index = CurLod;
if (rinfo.RenderType == SpecialRenderInfoClass::RENDER_SHADOW) { // (gth) HACK HACK! yikes
lod_index = LodCount-1;
lod_index = lod_count - 1;
}
if (lod_index >= lod_count || lod_index < 0) {
lod_index = lod_count - 1;
}

for (i = 0; i < Lod[lod_index].Count(); i++) {
Lod[lod_index][i].Model->Special_Render(rinfo);
if (lod_index >= 0 && lod_index < lod_count) {
for (i = 0; i < Lod[lod_index].Count(); i++) {
Lod[lod_index][i].Model->Special_Render(rinfo);
}
}

for (i = 0; i < AdditionalModels.Count(); i++) {
Expand Down
25 changes: 19 additions & 6 deletions GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2144,9 +2144,16 @@ void HLodClass::Render(RenderInfoClass & rinfo)

Animatable3DObjClass::Render(rinfo);

for (i = 0; i < Lod[CurLod].Count(); i++) {
if (Lod[CurLod][i].Model->Class_ID() != CLASSID_OBBOX) ///We have no use for these - MW
Lod[CurLod][i].Model->Render(rinfo);
int lod_count = LodCount;
int lod_index = CurLod;
if (lod_index >= lod_count || lod_index < 0) {
lod_index = lod_count - 1;
}
if (lod_index >= 0 && lod_index < lod_count) {
for (i = 0; i < Lod[lod_index].Count(); i++) {
if (Lod[lod_index][i].Model->Class_ID() != CLASSID_OBBOX) ///We have no use for these - MW
Lod[lod_index][i].Model->Render(rinfo);
}
}

if (Is_Sub_Objects_Match_LOD_Enabled()) {
Expand Down Expand Up @@ -2183,13 +2190,19 @@ void HLodClass::Special_Render(SpecialRenderInfoClass & rinfo)

Animatable3DObjClass::Special_Render(rinfo);

int lod_count = LodCount;
int lod_index = CurLod;
if (rinfo.RenderType == SpecialRenderInfoClass::RENDER_SHADOW) { // (gth) HACK HACK! yikes
lod_index = LodCount-1;
lod_index = lod_count - 1;
}
if (lod_index >= lod_count || lod_index < 0) {
lod_index = lod_count - 1;
}

for (i = 0; i < Lod[lod_index].Count(); i++) {
Lod[lod_index][i].Model->Special_Render(rinfo);
if (lod_index >= 0 && lod_index < lod_count) {
for (i = 0; i < Lod[lod_index].Count(); i++) {
Lod[lod_index][i].Model->Special_Render(rinfo);
}
}

for (i = 0; i < AdditionalModels.Count(); i++) {
Expand Down
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