1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
#pragma once
#include "ITextureLoader.h"
#include <memory>
namespace nCine
{
/// DDS texture loader
class TextureLoaderDds : public ITextureLoader
{
public:
explicit TextureLoaderDds(std::unique_ptr<Death::IO::Stream> fileHandle);
private:
#ifndef DOXYGEN_GENERATING_OUTPUT
// Doxygen 1.12.0 outputs also private structs/unions even if it shouldn't
/// Header for the DDS pixel format
struct DdsPixelformat
{
std::uint32_t dwSize;
std::uint32_t dwFlags;
std::uint32_t dwFourCC;
std::uint32_t dwRGBBitCount;
std::uint32_t dwRBitMask;
std::uint32_t dwGBitMask;
std::uint32_t dwBBitMask;
std::uint32_t dwABitMask;
};
/// Header for the DDS format
struct DdsHeader
{
std::uint32_t dwMagic;
std::uint32_t dwSize;
std::uint32_t dwFlags;
std::uint32_t dwHeight;
std::uint32_t dwWidth;
std::uint32_t dwPitchOrLinearSize;
std::uint32_t dwDepth;
std::uint32_t dwMipMapCount;
std::uint32_t dwReserved1[11];
DdsPixelformat ddspf;
std::uint32_t dwCaps;
std::uint32_t dwCaps2;
std::uint32_t dwCaps3;
std::uint32_t dwCaps4;
std::uint32_t dwReserved2;
};
#endif
static const std::uint32_t DDPF_ALPHAPIXELS = 0x1;
static const std::uint32_t DDPF_ALPHA = 0x2;
static const std::uint32_t DDPF_FOURCC = 0x4;
static const std::uint32_t DDPF_RGB = 0x40;
static const std::uint32_t DDPF_YUV = 0x200;
static const std::uint32_t DDPF_LUMINANCE = 0x20000;
static const std::uint32_t DDS_R8G8B8 = 20;
static const std::uint32_t DDS_A8R8G8B8 = 21;
static const std::uint32_t DDS_R5G6B5 = 23;
static const std::uint32_t DDS_A1R5G5B5 = 25;
static const std::uint32_t DDS_A4R4G4B4 = 26;
static const std::uint32_t DDS_DXT1 = 0x31545844; // "DXT1"
static const std::uint32_t DDS_DXT3 = 0x33545844; // "DXT3"
static const std::uint32_t DDS_DXT5 = 0x35545844; // "DXT5"
static const std::uint32_t DDS_ETC1 = 0x31435445; // "ETC1"
static const std::uint32_t DDS_ATC = 0x20435441; // "ATC "
static const std::uint32_t DDS_ATCA = 0x41435441; // "ATCA"
static const std::uint32_t DDS_ATCI = 0x49435441; // "ATCI"
/// Reads the DDS header and fills the corresponding structure
bool readHeader(DdsHeader& header);
/// Parses the DDS header to determine its format
bool parseFormat(const DdsHeader& header);
};
}
|
