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Fixed BC4/BC5 LockRect memory corruption.

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This commit is contained in:
bkaradzic 2013-02-14 21:42:44 -08:00
parent cc69b20e14
commit 8a499e69c0
1 changed files with 24 additions and 1 deletions
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25
src/renderer_d3d9.cpp
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@ -1440,10 +1440,26 @@ namespace bgfx
}
else
{
// For BC4 and B5 in DX9 LockRect returns wrong number of
// bytes. If actual mip size is used it causes memory corruption.
// http://www.aras-p.info/texts/D3D9GPUHacks.html#3dc
bool useMipSize = true
&& dds.m_type != TextureFormat::BC4
&& dds.m_type != TextureFormat::BC5
;
for (uint8_t side = 0, numSides = dds.m_cubeMap ? 6 : 1; side < numSides; ++side)
{
uint32_t width = dds.m_width;
uint32_t height = dds.m_height;
uint32_t depth = dds.m_depth;
for (uint32_t lod = 0, num = dds.m_numMips; lod < num; ++lod)
{
width = uint32_max(1, width);
height = uint32_max(1, height);
depth = uint32_max(1, depth);
Mip mip;
if (getRawImageData(dds, 0, lod, _mem, mip) )
{
@ -1451,10 +1467,16 @@ namespace bgfx
uint32_t slicePitch;
uint8_t* dst = lock(side, lod, pitch, slicePitch);
memcpy(dst, mip.m_data, mip.m_size);
uint32_t size = useMipSize ? mip.m_size : width*height*depth*bpp/8;
memcpy(dst, mip.m_data, size);
unlock(side, lod);
}
width >>= 1;
height >>= 1;
depth >>= 1;
}
}
}
@ -1827,6 +1849,7 @@ namespace bgfx
VertexBuffer& vb = s_renderCtx.m_vertexBuffers[m_vb->handle.idx];
VertexDeclaration& vertexDecl = s_renderCtx.m_vertexDecls[m_vb->decl.idx];
DX_CHECK(device->SetStreamSource(0, vb.m_ptr, 0, vertexDecl.m_decl.m_stride) );
DX_CHECK_REFCOUNT(vertexDecl.m_ptr, 1);
DX_CHECK(device->SetVertexDeclaration(vertexDecl.m_ptr) );
IndexBuffer& ib = s_renderCtx.m_indexBuffers[m_ib->handle.idx];