From 76690392bf8923d7172936836d15e3caebb26cf0 Mon Sep 17 00:00:00 2001 From: archshift Date: Sun, 24 May 2015 12:20:31 -0700 Subject: Move video_core/color.h to common/color.h --- src/common/CMakeLists.txt | 1 + src/common/color.h | 214 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 215 insertions(+) create mode 100644 src/common/color.h (limited to 'src/common') diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt index d1c306d3..e78f4f14 100644 --- a/src/common/CMakeLists.txt +++ b/src/common/CMakeLists.txt @@ -24,6 +24,7 @@ set(HEADERS bit_field.h break_points.h chunk_file.h + color.h common_funcs.h common_paths.h common_types.h diff --git a/src/common/color.h b/src/common/color.h new file mode 100644 index 00000000..422fdc8a --- /dev/null +++ b/src/common/color.h @@ -0,0 +1,214 @@ +// Copyright 2014 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "common/common_types.h" +#include "common/swap.h" +#include "common/vector_math.h" + +namespace Color { + +/// Convert a 1-bit color component to 8 bit +inline u8 Convert1To8(u8 value) { + return value * 255; +} + +/// Convert a 4-bit color component to 8 bit +inline u8 Convert4To8(u8 value) { + return (value << 4) | value; +} + +/// Convert a 5-bit color component to 8 bit +inline u8 Convert5To8(u8 value) { + return (value << 3) | (value >> 2); +} + +/// Convert a 6-bit color component to 8 bit +inline u8 Convert6To8(u8 value) { + return (value << 2) | (value >> 4); +} + +/// Convert a 8-bit color component to 1 bit +inline u8 Convert8To1(u8 value) { + return value >> 7; +} + +/// Convert a 8-bit color component to 4 bit +inline u8 Convert8To4(u8 value) { + return value >> 4; +} + +/// Convert a 8-bit color component to 5 bit +inline u8 Convert8To5(u8 value) { + return value >> 3; +} + +/// Convert a 8-bit color component to 6 bit +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 + */ +inline const Math::Vec4 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 + */ +inline const Math::Vec4 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 + */ +inline const Math::Vec4 DecodeRGB565(const u8* bytes) { + const u16_le pixel = *reinterpret_cast(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 + */ +inline const Math::Vec4 DecodeRGB5A1(const u8* bytes) { + const u16_le pixel = *reinterpret_cast(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 + */ +inline const Math::Vec4 DecodeRGBA4(const u8* bytes) { + const u16_le pixel = *reinterpret_cast(bytes); + return { Convert4To8((pixel >> 12) & 0xF), Convert4To8((pixel >> 8) & 0xF), + Convert4To8((pixel >> 4) & 0xF), Convert4To8(pixel & 0xF) }; +} + +/** + * Decode a depth value stored in D16 format + * @param bytes Pointer to encoded source value + * @return Depth value as an u32 + */ +inline u32 DecodeD16(const u8* bytes) { + return *reinterpret_cast(bytes); +} + +/** + * Decode a depth value stored in D24 format + * @param bytes Pointer to encoded source value + * @return Depth value as an u32 + */ +inline u32 DecodeD24(const u8* bytes) { + return (bytes[2] << 16) | (bytes[1] << 8) | bytes[0]; +} + +/** + * Decode a depth value and a stencil value stored in D24S8 format + * @param bytes Pointer to encoded source values + * @return Resulting values stored as a Math::Vec2 + */ +inline const Math::Vec2 DecodeD24S8(const u8* bytes) { + return { static_cast((bytes[2] << 16) | (bytes[1] << 8) | bytes[0]), bytes[3] }; +} + +/** + * 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& 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& 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& color, u8* bytes) { + *reinterpret_cast(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& color, u8* bytes) { + *reinterpret_cast(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& color, u8* bytes) { + *reinterpret_cast(bytes) = (Convert8To4(color.r()) << 12) | + (Convert8To4(color.g()) << 8) | (Convert8To4(color.b()) << 4) | Convert8To4(color.a()); +} + +/** + * Encode a 16 bit depth value as D16 format + * @param value 16 bit source depth value to encode + * @param bytes Pointer where to store the encoded value + */ +inline void EncodeD16(u32 value, u8* bytes) { + *reinterpret_cast(bytes) = value & 0xFFFF; +} + +/** + * Encode a 24 bit depth value as D24 format + * @param value 24 bit source depth value to encode + * @param bytes Pointer where to store the encoded value + */ +inline void EncodeD24(u32 value, u8* bytes) { + bytes[0] = value & 0xFF; + bytes[1] = (value >> 8) & 0xFF; + bytes[2] = (value >> 16) & 0xFF; +} + +/** + * Encode a 24 bit depth and 8 bit stencil values as D24S8 format + * @param depth 24 bit source depth value to encode + * @param stencil 8 bit source stencil value to encode + * @param bytes Pointer where to store the encoded value + */ +inline void EncodeD24S8(u32 depth, u8 stencil, u8* bytes) { + *reinterpret_cast(bytes) = (stencil << 24) | depth; +} + +} // namespace -- cgit v1.2.3