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LWO: replace legacy reinterpret_cast based code by memcpy to solve Android SIGBUS problems due to unaligned accesses. Fixes #351

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This commit is contained in:
acgessler
2014-09-04 20:49:48 -07:00
parent 1a594b861a
commit 185f01963f
5 changed files with 182 additions and 144 deletions
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72
code/LWOMaterial.cpp
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@@ -527,13 +527,13 @@ void LWOImporter::LoadLWO2ImageMap(unsigned int size, LWO::Texture& tex )
while (true)
{
if (mFileBuffer + 6 >= end)break;
LE_NCONST IFF::SubChunkHeader* const head = IFF::LoadSubChunk(mFileBuffer);
LE_NCONST IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
if (mFileBuffer + head->length > end)
if (mFileBuffer + head.length > end)
throw DeadlyImportError("LWO2: Invalid SURF.BLOCK chunk length");
uint8_t* const next = mFileBuffer+head->length;
switch (head->type)
uint8_t* const next = mFileBuffer+head.length;
switch (head.type)
{
case AI_LWO_PROJ:
tex.mapMode = (Texture::MappingMode)GetU2();
@@ -549,7 +549,7 @@ void LWOImporter::LoadLWO2ImageMap(unsigned int size, LWO::Texture& tex )
tex.mClipIdx = GetU2();
break;
case AI_LWO_VMAP:
GetS0(tex.mUVChannelIndex,head->length);
GetS0(tex.mUVChannelIndex,head.length);
break;
case AI_LWO_WRPH:
tex.wrapAmountH = GetF4();
@@ -595,13 +595,13 @@ void LWOImporter::LoadLWO2TextureHeader(unsigned int size, LWO::Texture& tex )
while (true)
{
if (mFileBuffer + 6 >= end)break;
LE_NCONST IFF::SubChunkHeader* const head = IFF::LoadSubChunk(mFileBuffer);
const IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
if (mFileBuffer + head->length > end)
if (mFileBuffer + head.length > end)
throw DeadlyImportError("LWO2: Invalid texture header chunk length");
uint8_t* const next = mFileBuffer+head->length;
switch (head->type)
uint8_t* const next = mFileBuffer+head.length;
switch (head.type)
{
case AI_LWO_CHAN:
tex.type = GetU4();
@@ -698,20 +698,20 @@ void LWOImporter::LoadLWO2ShaderBlock(LE_NCONST IFF::SubChunkHeader* /*head*/, u
while (true)
{
if (mFileBuffer + 6 >= end)break;
LE_NCONST IFF::SubChunkHeader* const head = IFF::LoadSubChunk(mFileBuffer);
const IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
if (mFileBuffer + head->length > end)
if (mFileBuffer + head.length > end)
throw DeadlyImportError("LWO2: Invalid shader header chunk length");
uint8_t* const next = mFileBuffer+head->length;
switch (head->type)
uint8_t* const next = mFileBuffer+head.length;
switch (head.type)
{
case AI_LWO_ENAB:
shader.enabled = GetU2() ? true : false;
break;
case AI_LWO_FUNC:
GetS0( shader.functionName, head->length );
GetS0( shader.functionName, head.length );
}
mFileBuffer = next;
}
@@ -756,18 +756,18 @@ void LWOImporter::LoadLWO2Surface(unsigned int size)
{
if (mFileBuffer + 6 >= end)
break;
LE_NCONST IFF::SubChunkHeader* const head = IFF::LoadSubChunk(mFileBuffer);
const IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
if (mFileBuffer + head->length > end)
if (mFileBuffer + head.length > end)
throw DeadlyImportError("LWO2: Invalid surface chunk length");
uint8_t* const next = mFileBuffer+head->length;
switch (head->type)
uint8_t* const next = mFileBuffer+head.length;
switch (head.type)
{
// diffuse color
case AI_LWO_COLR:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,COLR,12);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,COLR,12);
surf.mColor.r = GetF4();
surf.mColor.g = GetF4();
surf.mColor.b = GetF4();
@@ -776,14 +776,14 @@ void LWOImporter::LoadLWO2Surface(unsigned int size)
// diffuse strength ... hopefully
case AI_LWO_DIFF:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,DIFF,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,DIFF,4);
surf.mDiffuseValue = GetF4();
break;
}
// specular strength ... hopefully
case AI_LWO_SPEC:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,SPEC,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,SPEC,4);
surf.mSpecularValue = GetF4();
break;
}
@@ -794,21 +794,21 @@ void LWOImporter::LoadLWO2Surface(unsigned int size)
if (surf.mTransparency == 10e10f)
break;
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,TRAN,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,TRAN,4);
surf.mTransparency = GetF4();
break;
}
// additive transparency
case AI_LWO_ADTR:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,ADTR,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,ADTR,4);
surf.mAdditiveTransparency = GetF4();
break;
}
// wireframe mode
case AI_LWO_LINE:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,LINE,2);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,LINE,2);
if (GetU2() & 0x1)
surf.mWireframe = true;
break;
@@ -816,49 +816,49 @@ void LWOImporter::LoadLWO2Surface(unsigned int size)
// glossiness
case AI_LWO_GLOS:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,GLOS,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,GLOS,4);
surf.mGlossiness = GetF4();
break;
}
// bump intensity
case AI_LWO_BUMP:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,BUMP,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,BUMP,4);
surf.mBumpIntensity = GetF4();
break;
}
// color highlights
case AI_LWO_CLRH:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,CLRH,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,CLRH,4);
surf.mColorHighlights = GetF4();
break;
}
// index of refraction
case AI_LWO_RIND:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,RIND,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,RIND,4);
surf.mIOR = GetF4();
break;
}
// polygon sidedness
case AI_LWO_SIDE:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,SIDE,2);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,SIDE,2);
surf.bDoubleSided = (3 == GetU2());
break;
}
// maximum smoothing angle
case AI_LWO_SMAN:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,SMAN,4);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,SMAN,4);
surf.mMaximumSmoothAngle = fabs( GetF4() );
break;
}
// vertex color channel to be applied to the surface
case AI_LWO_VCOL:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,VCOL,12);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,VCOL,12);
surf.mDiffuseValue *= GetF4(); // strength
ReadVSizedIntLWO2(mFileBuffer); // skip envelope
surf.mVCMapType = GetU4(); // type of the channel
@@ -870,18 +870,18 @@ void LWOImporter::LoadLWO2Surface(unsigned int size)
// surface bock entry
case AI_LWO_BLOK:
{
AI_LWO_VALIDATE_CHUNK_LENGTH(head->length,BLOK,4);
LE_NCONST IFF::SubChunkHeader* head2 = IFF::LoadSubChunk(mFileBuffer);
AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,BLOK,4);
IFF::SubChunkHeader head2 = IFF::LoadSubChunk(mFileBuffer);
switch (head2->type)
switch (head2.type)
{
case AI_LWO_PROC:
case AI_LWO_GRAD:
case AI_LWO_IMAP:
LoadLWO2TextureBlock(head2, head->length);
LoadLWO2TextureBlock(&head2, head.length);
break;
case AI_LWO_SHDR:
LoadLWO2ShaderBlock(head2, head->length);
LoadLWO2ShaderBlock(&head2, head.length);
break;
default: