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88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
#pragma once
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#include <cstdint>
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#include <cstdlib>
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namespace Draw {
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enum class DataFormat : uint8_t {
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UNDEFINED,
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R8_UNORM,
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R8G8_UNORM,
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R8G8B8_UNORM,
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R8G8B8A8_UNORM,
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R8G8B8A8_UNORM_SRGB,
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B8G8R8A8_UNORM, // D3D style
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B8G8R8A8_UNORM_SRGB, // D3D style
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R8G8B8A8_SNORM,
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R8G8B8A8_UINT,
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R8G8B8A8_SINT,
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R4G4_UNORM_PACK8,
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A4R4G4B4_UNORM_PACK16, // A4 in the UPPER bit
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B4G4R4A4_UNORM_PACK16,
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R4G4B4A4_UNORM_PACK16,
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R5G6B5_UNORM_PACK16,
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B5G6R5_UNORM_PACK16,
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R5G5B5A1_UNORM_PACK16, // A1 in the LOWER bit
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B5G5R5A1_UNORM_PACK16, // A1 in the LOWER bit
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A1R5G5B5_UNORM_PACK16, // A1 in the UPPER bit.
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A1B5G5R5_UNORM_PACK16, // A1 in the UPPER bit. OpenGL-only.
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R16_UNORM,
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R16_FLOAT,
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R16G16_FLOAT,
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R16G16B16A16_FLOAT,
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R32_FLOAT,
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R32G32_FLOAT,
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R32G32B32_FLOAT,
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R32G32B32A32_FLOAT,
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// Block compression formats.
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// These are modern names for DXT and friends, now patent free.
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// https://msdn.microsoft.com/en-us/library/bb694531.aspx
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BC1_RGBA_UNORM_BLOCK, // 64 bits per 4x4 block. Used by Basis, along with ETC2_R8G8B8_UNORM_BLOCK.
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BC2_UNORM_BLOCK, // 4-bit straight alpha + DXT1 color. 128 bits per block. Usually not worth using
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BC3_UNORM_BLOCK, // 3-bit alpha with 2 ref values (+ magic) + DXT1 color. 128 bits per block.
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BC4_UNORM_BLOCK, // 1-channel, same storage as BC3 alpha. 64 bits per block.
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BC5_UNORM_BLOCK, // 2-channel RG, each has same storage as BC3 alpha. 128 bits per block.
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BC7_UNORM_BLOCK, // Highly advanced RGBA, very expensive to compress, very good quality. 128 bits per block.
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// Ericsson texture compression.
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ETC2_R8G8B8_UNORM_BLOCK, // Color-only, 64 bits per 4x4 block.
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ETC2_R8G8B8A1_UNORM_BLOCK, // Color + alpha, 128 bits per 4x4 block.
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ETC2_R8G8B8A8_UNORM_BLOCK, // Color + alpha, 128 bits per 4x4 block.
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// This is the one ASTC format used by UASTC / basis Universal.
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ASTC_4x4_UNORM_BLOCK,
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S8,
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D16,
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D16_S8,
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D24_S8,
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D32F,
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D32F_S8,
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};
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size_t DataFormatSizeInBytes(DataFormat fmt);
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bool DataFormatIsDepthStencil(DataFormat fmt);
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inline bool DataFormatIsColor(DataFormat fmt) {
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return !DataFormatIsDepthStencil(fmt);
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}
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bool DataFormatIsBlockCompressed(DataFormat fmt, int *blockSize);
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// Limited format support for now.
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const char *DataFormatToString(DataFormat fmt);
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void ConvertFromRGBA8888(uint8_t *dst, const uint8_t *src, uint32_t dstStride, uint32_t srcStride, uint32_t width, uint32_t height, DataFormat format);
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void ConvertFromBGRA8888(uint8_t *dst, const uint8_t *src, uint32_t dstStride, uint32_t srcStride, uint32_t width, uint32_t height, DataFormat format);
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void ConvertToD32F(uint8_t *dst, const uint8_t *src, uint32_t dstStride, uint32_t srcStride, uint32_t width, uint32_t height, DataFormat format);
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void ConvertToD16(uint8_t *dst, const uint8_t *src, uint32_t dstStride, uint32_t srcStride, uint32_t width, uint32_t height, DataFormat format);
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} // namespace
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