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DDS support for L8A8 with bitcount 8 instead of 16

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This commit is contained in:
Chuck Walbourn 2016-12-08 11:05:31 -08:00
parent edd28124b8
commit 0abee99a11
4 changed files with 25 additions and 6 deletions
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5
DDSTextureLoader/DDSTextureLoader.cpp
View File

@ -632,6 +632,11 @@ namespace
}
// No DXGI format maps to ISBITMASK(0x0f,0x00,0x00,0xf0) aka D3DFMT_A4L4
if (ISBITMASK(0x000000ff, 0x00000000, 0x00000000, 0x0000ff00))
{
return DXGI_FORMAT_R8G8_UNORM; // Some DDS writers assume the bitcount should be 8 instead of 16
}
}
if (16 == ddpf.RGBBitCount)

5
DDSTextureLoader/DDSTextureLoader12.cpp
View File

@ -635,6 +635,11 @@ namespace
}
// No DXGI format maps to ISBITMASK(0x0f,0x00,0x00,0xf0) aka D3DFMT_A4L4
if (ISBITMASK(0x000000ff, 0x00000000, 0x00000000, 0x0000ff00))
{
return DXGI_FORMAT_R8G8_UNORM; // Some DDS writers assume the bitcount should be 8 instead of 16
}
}
if (16 == ddpf.RGBBitCount)

4
DirectXTex/DDS.h
View File

@ -54,6 +54,7 @@ struct DDS_PIXELFORMAT
#define DDS_LUMINANCEA 0x00020001 // DDPF_LUMINANCE | DDPF_ALPHAPIXELS
#define DDS_ALPHA 0x00000002 // DDPF_ALPHA
#define DDS_PAL8 0x00000020 // DDPF_PALETTEINDEXED8
#define DDS_PAL8A 0x00000021 // DDPF_PALETTEINDEXED8 | DDPF_ALPHAPIXELS
#define DDS_BUMPDUDV 0x00080000 // DDPF_BUMPDUDV
#ifndef MAKEFOURCC
@ -134,6 +135,9 @@ extern __declspec(selectany) const DDS_PIXELFORMAT DDSPF_L16 =
extern __declspec(selectany) const DDS_PIXELFORMAT DDSPF_A8L8 =
{ sizeof(DDS_PIXELFORMAT), DDS_LUMINANCEA, 0, 16, 0x00ff, 0x0000, 0x0000, 0xff00 };
extern __declspec(selectany) const DDS_PIXELFORMAT DDSPF_A8L8_ALT =
{ sizeof(DDS_PIXELFORMAT), DDS_LUMINANCEA, 0, 8, 0x00ff, 0x0000, 0x0000, 0xff00 };
extern __declspec(selectany) const DDS_PIXELFORMAT DDSPF_A8 =
{ sizeof(DDS_PIXELFORMAT), DDS_ALPHA, 0, 8, 0x00, 0x00, 0x00, 0xff };

17
DirectXTex/DirectXTexDDS.cpp
View File

@ -79,8 +79,8 @@ namespace
{ DXGI_FORMAT_R8G8B8A8_UNORM, CONV_FLAGS_NOALPHA, DDSPF_X8B8G8R8 }, // D3DFMT_X8B8G8R8
{ DXGI_FORMAT_R16G16_UNORM, CONV_FLAGS_NONE, DDSPF_G16R16 }, // D3DFMT_G16R16
{ DXGI_FORMAT_R10G10B10A2_UNORM, CONV_FLAGS_SWIZZLE, { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 32, 0x000003ff, 0x000ffc00, 0x3ff00000, 0xc0000000 } }, // D3DFMT_A2R10G10B10 (D3DX reversal issue workaround)
{ DXGI_FORMAT_R10G10B10A2_UNORM, CONV_FLAGS_NONE, { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000 } }, // D3DFMT_A2B10G10R10 (D3DX reversal issue workaround)
{ DXGI_FORMAT_R10G10B10A2_UNORM, CONV_FLAGS_SWIZZLE, { sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 32, 0x000003ff, 0x000ffc00, 0x3ff00000, 0xc0000000 } }, // D3DFMT_A2R10G10B10 (D3DX reversal issue workaround)
{ DXGI_FORMAT_R10G10B10A2_UNORM, CONV_FLAGS_NONE, { sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000 } }, // D3DFMT_A2B10G10R10 (D3DX reversal issue workaround)
{ DXGI_FORMAT_R8G8B8A8_UNORM, CONV_FLAGS_EXPAND
| CONV_FLAGS_NOALPHA
@ -92,13 +92,14 @@ namespace
| CONV_FLAGS_NOALPHA, { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 16, 0x7c00, 0x03e0, 0x001f, 0x0000 } }, // D3DFMT_X1R5G5B5
{ DXGI_FORMAT_R8G8B8A8_UNORM, CONV_FLAGS_EXPAND
| CONV_FLAGS_8332, { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 16, 0x00e0, 0x001c, 0x0003, 0xff00 } }, // D3DFMT_A8R3G3B2
| CONV_FLAGS_8332, { sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 16, 0x00e0, 0x001c, 0x0003, 0xff00 } }, // D3DFMT_A8R3G3B2
{ DXGI_FORMAT_B5G6R5_UNORM, CONV_FLAGS_EXPAND
| CONV_FLAGS_332, { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 8, 0xe0, 0x1c, 0x03, 0x00 } }, // D3DFMT_R3G3B2
{ DXGI_FORMAT_R8_UNORM, CONV_FLAGS_NONE, DDSPF_L8 }, // D3DFMT_L8
{ DXGI_FORMAT_R16_UNORM, CONV_FLAGS_NONE, DDSPF_L16 }, // D3DFMT_L16
{ DXGI_FORMAT_R8G8_UNORM, CONV_FLAGS_NONE, DDSPF_A8L8 }, // D3DFMT_A8L8
{ DXGI_FORMAT_R8G8_UNORM, CONV_FLAGS_NONE, DDSPF_A8L8_ALT }, // D3DFMT_A8L8 (alternative bitcount)
{ DXGI_FORMAT_A8_UNORM, CONV_FLAGS_NONE, DDSPF_A8 }, // D3DFMT_A8
@ -115,7 +116,7 @@ namespace
{ DXGI_FORMAT_R8G8B8A8_UNORM, CONV_FLAGS_EXPAND
| CONV_FLAGS_PAL8
| CONV_FLAGS_A8P8, { sizeof(DDS_PIXELFORMAT), DDS_PAL8, 0, 16, 0, 0, 0, 0 } }, // D3DFMT_A8P8
| CONV_FLAGS_A8P8, { sizeof(DDS_PIXELFORMAT), DDS_PAL8A, 0, 16, 0, 0, 0, 0 } }, // D3DFMT_A8P8
{ DXGI_FORMAT_R8G8B8A8_UNORM, CONV_FLAGS_EXPAND
| CONV_FLAGS_PAL8, { sizeof(DDS_PIXELFORMAT), DDS_PAL8, 0, 8, 0, 0, 0, 0 } }, // D3DFMT_P8
@ -123,7 +124,7 @@ namespace
{ DXGI_FORMAT_B4G4R4A4_UNORM, CONV_FLAGS_NOALPHA
| CONV_FLAGS_4444, { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 16, 0x0f00, 0x00f0, 0x000f, 0x0000 } }, // D3DFMT_X4R4G4B4 (uses DXGI 1.2 format)
{ DXGI_FORMAT_B4G4R4A4_UNORM, CONV_FLAGS_EXPAND
| CONV_FLAGS_44, { sizeof(DDS_PIXELFORMAT), DDS_LUMINANCE, 0, 8, 0x0f, 0x00, 0x00, 0xf0 } }, // D3DFMT_A4L4 (uses DXGI 1.2 format)
| CONV_FLAGS_44, { sizeof(DDS_PIXELFORMAT), DDS_LUMINANCEA,0, 8, 0x0f, 0x00, 0x00, 0xf0 } }, // D3DFMT_A4L4 (uses DXGI 1.2 format)
{ DXGI_FORMAT_YUY2, CONV_FLAGS_NONE, DDSPF_YUY2 }, // D3DFMT_YUY2 (uses DXGI 1.2 format)
{ DXGI_FORMAT_YUY2, CONV_FLAGS_SWIZZLE, { sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('U','Y','V','Y'), 0, 0, 0, 0, 0 } }, // D3DFMT_UYVY (uses DXGI 1.2 format)
@ -146,6 +147,10 @@ namespace
// ZBuffer D3DFMT_D16_LOCKABLE
// FourCC 82 D3DFMT_D32F_LOCKABLE
// We do not support the following known FourCC codes:
// FourCC CTX1 (Xbox 360 only)
// FourCC EAR, EARG, ET2, ET2A (Ericsson Texture Compression)
DXGI_FORMAT GetDXGIFormat(const DDS_PIXELFORMAT& ddpf, DWORD flags, _Inout_ DWORD& convFlags)
{
const size_t MAP_SIZE = sizeof(g_LegacyDDSMap) / sizeof(LegacyDDS);
@ -154,7 +159,7 @@ namespace
{
const LegacyDDS* entry = &g_LegacyDDSMap[index];
if ((ddpf.dwFlags & entry->ddpf.dwFlags) == entry->ddpf.dwFlags)
if (ddpf.dwFlags == entry->ddpf.dwFlags)
{
if (entry->ddpf.dwFlags & DDS_FOURCC)
{