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Added legacy DDS pixel format decoding.

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This commit is contained in:
Branimir Karadžić 2015-02-11 14:57:09 -08:00
parent 741203fa78
commit 06eef99ce9
1 changed files with 41 additions and 21 deletions
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62
src/image.cpp
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@ -1309,10 +1309,9 @@ namespace bgfx
{
uint32_t m_format;
TextureFormat::Enum m_textureFormat;
};
static TranslateDdsFormat s_translateDdsFormat[] =
static TranslateDdsFormat s_translateDdsFourccFormat[] =
{
{ DDS_DXT1, TextureFormat::BC1 },
{ DDS_DXT2, TextureFormat::BC2 },
@ -1376,6 +1375,19 @@ namespace bgfx
{ DXGI_FORMAT_R10G10B10A2_UNORM, TextureFormat::RGB10A2 },
};
struct TranslateDdsPixelFormat
{
uint32_t m_bitCount;
uint32_t m_bitmask[4];
TextureFormat::Enum m_textureFormat;
};
static TranslateDdsPixelFormat s_translateDdsPixelFormat[] =
{
{ 32, { 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 }, TextureFormat::BGRA8 },
{ 32, { 0x00ff0000, 0x0000ff00, 0x000000ff, 0x00000000 }, TextureFormat::BGRA8 },
};
bool imageParseDds(ImageContainer& _imageContainer, bx::ReaderSeekerI* _reader)
{
uint32_t headerSize;
@ -1420,20 +1432,11 @@ namespace bgfx
uint32_t fourcc;
bx::read(_reader, fourcc);
uint32_t rgbCount;
bx::read(_reader, rgbCount);
uint32_t bitCount;
bx::read(_reader, bitCount);
uint32_t rbitmask;
bx::read(_reader, rbitmask);
uint32_t gbitmask;
bx::read(_reader, gbitmask);
uint32_t bbitmask;
bx::read(_reader, bbitmask);
uint32_t abitmask;
bx::read(_reader, abitmask);
uint32_t bitmask[4];
bx::read(_reader, bitmask, sizeof(bitmask) );
uint32_t caps[4];
bx::read(_reader, caps);
@ -1479,14 +1482,31 @@ namespace bgfx
if (dxgiFormat == 0)
{
uint32_t ddsFormat = pixelFlags & DDPF_FOURCC ? fourcc : pixelFlags;
for (uint32_t ii = 0; ii < BX_COUNTOF(s_translateDdsFormat); ++ii)
if (DDPF_FOURCC == (pixelFlags & DDPF_FOURCC) )
{
if (s_translateDdsFormat[ii].m_format == ddsFormat)
for (uint32_t ii = 0; ii < BX_COUNTOF(s_translateDdsFourccFormat); ++ii)
{
format = s_translateDdsFormat[ii].m_textureFormat;
break;
if (s_translateDdsFourccFormat[ii].m_format == fourcc)
{
format = s_translateDdsFourccFormat[ii].m_textureFormat;
break;
}
}
}
else
{
for (uint32_t ii = 0; ii < BX_COUNTOF(s_translateDdsPixelFormat); ++ii)
{
const TranslateDdsPixelFormat& pf = s_translateDdsPixelFormat[ii];
if (pf.m_bitCount == bitCount
&& pf.m_bitmask[0] == bitmask[0]
&& pf.m_bitmask[1] == bitmask[1]
&& pf.m_bitmask[2] == bitmask[2]
&& pf.m_bitmask[3] == bitmask[3])
{
format = pf.m_textureFormat;
break;
}
}
}
}