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Diffstat (limited to '')
-rw-r--r-- | src/video_core/color.h | 121 |
1 files changed, 113 insertions, 8 deletions
diff --git a/src/video_core/color.h b/src/video_core/color.h index f095d8ac5..35da901f2 100644 --- a/src/video_core/color.h +++ b/src/video_core/color.h @@ -5,47 +5,152 @@ #pragma once #include "common/common_types.h" +#include "video_core/math.h" namespace Color { /// Convert a 1-bit color component to 8 bit -static inline u8 Convert1To8(u8 value) { +inline u8 Convert1To8(u8 value) { return value * 255; } /// Convert a 4-bit color component to 8 bit -static inline u8 Convert4To8(u8 value) { +inline u8 Convert4To8(u8 value) { return (value << 4) | value; } /// Convert a 5-bit color component to 8 bit -static inline u8 Convert5To8(u8 value) { +inline u8 Convert5To8(u8 value) { return (value << 3) | (value >> 2); } /// Convert a 6-bit color component to 8 bit -static inline u8 Convert6To8(u8 value) { +inline u8 Convert6To8(u8 value) { return (value << 2) | (value >> 4); } /// Convert a 8-bit color component to 1 bit -static inline u8 Convert8To1(u8 value) { +inline u8 Convert8To1(u8 value) { return value >> 7; } /// Convert a 8-bit color component to 4 bit -static inline u8 Convert8To4(u8 value) { +inline u8 Convert8To4(u8 value) { return value >> 4; } /// Convert a 8-bit color component to 5 bit -static inline u8 Convert8To5(u8 value) { +inline u8 Convert8To5(u8 value) { return value >> 3; } /// Convert a 8-bit color component to 6 bit -static inline u8 Convert8To6(u8 value) { +inline u8 Convert8To6(u8 value) { return value >> 2; } +/** + * Decode a color stored in RGBA8 format + * @param bytes Pointer to encoded source color + * @return Result color decoded as Math::Vec4<u8> + */ +inline const Math::Vec4<u8> DecodeRGBA8(const u8* bytes) { + return { bytes[3], bytes[2], bytes[1], bytes[0] }; +} + +/** + * Decode a color stored in RGB8 format + * @param bytes Pointer to encoded source color + * @return Result color decoded as Math::Vec4<u8> + */ +inline const Math::Vec4<u8> DecodeRGB8(const u8* bytes) { + return { bytes[2], bytes[1], bytes[0], 255 }; +} + +/** + * Decode a color stored in RGB565 format + * @param bytes Pointer to encoded source color + * @return Result color decoded as Math::Vec4<u8> + */ +inline const Math::Vec4<u8> DecodeRGB565(const u8* bytes) { + const u16_le pixel = *reinterpret_cast<const u16_le*>(bytes); + return { Convert5To8((pixel >> 11) & 0x1F), Convert6To8((pixel >> 5) & 0x3F), + Convert5To8(pixel & 0x1F), 255 }; +} + +/** + * Decode a color stored in RGB5A1 format + * @param bytes Pointer to encoded source color + * @return Result color decoded as Math::Vec4<u8> + */ +inline const Math::Vec4<u8> DecodeRGB5A1(const u8* bytes) { + const u16_le pixel = *reinterpret_cast<const u16_le*>(bytes); + return { Convert5To8((pixel >> 11) & 0x1F), Convert5To8((pixel >> 6) & 0x1F), + Convert5To8((pixel >> 1) & 0x1F), Convert1To8(pixel & 0x1) }; +} + +/** + * Decode a color stored in RGBA4 format + * @param bytes Pointer to encoded source color + * @return Result color decoded as Math::Vec4<u8> + */ +inline const Math::Vec4<u8> DecodeRGBA4(const u8* bytes) { + const u16_le pixel = *reinterpret_cast<const u16_le*>(bytes); + return { Convert4To8((pixel >> 12) & 0xF), Convert4To8((pixel >> 8) & 0xF), + Convert4To8((pixel >> 4) & 0xF), Convert4To8(pixel & 0xF) }; +} + +/** + * Encode a color as RGBA8 format + * @param color Source color to encode + * @param bytes Destination pointer to store encoded color + */ +inline void EncodeRGBA8(const Math::Vec4<u8>& color, u8* bytes) { + bytes[3] = color.r(); + bytes[2] = color.g(); + bytes[1] = color.b(); + bytes[0] = color.a(); +} + +/** + * Encode a color as RGB8 format + * @param color Source color to encode + * @param bytes Destination pointer to store encoded color + */ +inline void EncodeRGB8(const Math::Vec4<u8>& color, u8* bytes) { + bytes[2] = color.r(); + bytes[1] = color.g(); + bytes[0] = color.b(); +} + +/** + * Encode a color as RGB565 format + * @param color Source color to encode + * @param bytes Destination pointer to store encoded color + */ +inline void EncodeRGB565(const Math::Vec4<u8>& color, u8* bytes) { + *reinterpret_cast<u16_le*>(bytes) = (Convert8To5(color.r()) << 11) | + (Convert8To6(color.g()) << 5) | Convert8To5(color.b()); +} + +/** + * Encode a color as RGB5A1 format + * @param color Source color to encode + * @param bytes Destination pointer to store encoded color + */ +inline void EncodeRGB5A1(const Math::Vec4<u8>& color, u8* bytes) { + *reinterpret_cast<u16_le*>(bytes) = (Convert8To5(color.r()) << 11) | + (Convert8To5(color.g()) << 6) | (Convert8To5(color.b()) << 1) | Convert8To1(color.a()); +} + +/** + * Encode a color as RGBA4 format + * @param color Source color to encode + * @param bytes Destination pointer to store encoded color + */ +inline void EncodeRGBA4(const Math::Vec4<u8>& color, u8* bytes) { + *reinterpret_cast<u16_le*>(bytes) = (Convert8To4(color.r()) << 12) | + (Convert8To4(color.g()) << 8) | (Convert8To4(color.b()) << 4) | Convert8To4(color.a()); +} + } // namespace |