1 #pragma once
2
3 #include <cstdint>
4 #include <cstdlib>
5
6 namespace Draw {
7
8 enum class DataFormat : uint8_t {
9 UNDEFINED,
10
11 R8_UNORM,
12 R8G8_UNORM,
13 R8G8B8_UNORM,
14
15 R8G8B8A8_UNORM,
16 R8G8B8A8_UNORM_SRGB,
17 B8G8R8A8_UNORM, // D3D style
18 B8G8R8A8_UNORM_SRGB, // D3D style
19
20 R8G8B8A8_SNORM,
21 R8G8B8A8_UINT,
22 R8G8B8A8_SINT,
23
24 R4G4_UNORM_PACK8,
25 A4R4G4B4_UNORM_PACK16, // A4 in the UPPER bit
26 B4G4R4A4_UNORM_PACK16,
27 R4G4B4A4_UNORM_PACK16,
28 R5G6B5_UNORM_PACK16,
29 B5G6R5_UNORM_PACK16,
30 R5G5B5A1_UNORM_PACK16, // A1 in the LOWER bit
31 B5G5R5A1_UNORM_PACK16, // A1 in the LOWER bit
32 A1R5G5B5_UNORM_PACK16, // A1 in the UPPER bit.
33 A1B5G5R5_UNORM_PACK16, // A1 in the UPPER bit. OpenGL-only.
34
35 R16_FLOAT,
36 R16G16_FLOAT,
37 R16G16B16A16_FLOAT,
38
39 R32_FLOAT,
40 R32G32_FLOAT,
41 R32G32B32_FLOAT,
42 R32G32B32A32_FLOAT,
43
44 // Block compression formats.
45 // These are modern names for DXT and friends, now patent free.
46 // https://msdn.microsoft.com/en-us/library/bb694531.aspx
47 BC1_RGBA_UNORM_BLOCK,
48 BC1_RGBA_SRGB_BLOCK,
49 BC2_UNORM_BLOCK, // 4-bit straight alpha + DXT1 color. Usually not worth using
50 BC2_SRGB_BLOCK,
51 BC3_UNORM_BLOCK, // 3-bit alpha with 2 ref values (+ magic) + DXT1 color
52 BC3_SRGB_BLOCK,
53 BC4_UNORM_BLOCK, // 1-channel, same storage as BC3 alpha
54 BC4_SNORM_BLOCK,
55 BC5_UNORM_BLOCK, // 2-channel RG, each has same storage as BC3 alpha
56 BC5_SNORM_BLOCK,
57 BC6H_UFLOAT_BLOCK, // TODO
58 BC6H_SFLOAT_BLOCK,
59 BC7_UNORM_BLOCK, // Highly advanced, very expensive to compress, very good quality.
60 BC7_SRGB_BLOCK,
61
62 ETC1,
63
64 S8,
65 D16,
66 D24_S8,
67 D32F,
68 D32F_S8,
69 };
70
71 size_t DataFormatSizeInBytes(DataFormat fmt);
72 bool DataFormatIsDepthStencil(DataFormat fmt);
DataFormatIsColor(DataFormat fmt)73 inline bool DataFormatIsColor(DataFormat fmt) {
74 return !DataFormatIsDepthStencil(fmt);
75 }
76
77 void ConvertFromRGBA8888(uint8_t *dst, const uint8_t *src, uint32_t dstStride, uint32_t srcStride, uint32_t width, uint32_t height, DataFormat format);
78 void ConvertFromBGRA8888(uint8_t *dst, const uint8_t *src, uint32_t dstStride, uint32_t srcStride, uint32_t width, uint32_t height, DataFormat format);
79 void ConvertToD32F(uint8_t *dst, const uint8_t *src, uint32_t dstStride, uint32_t srcStride, uint32_t width, uint32_t height, DataFormat format);
80
81 } // namespace
82