// // Copyright (c) 2013-2015 The ANGLE Project Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // // imageformats.h: Defines image format types with functions for mip generation // and copying. #ifndef IMAGEUTIL_IMAGEFORMATS_H_ #define IMAGEUTIL_IMAGEFORMATS_H_ #include "common/Color.h" #include <cstdint> namespace angle { // Several structures share functionality for reading, writing or mipmapping but the layout // must match the texture format which the structure represents. If collapsing or typedefing // structs in this header, make sure the functionality and memory layout is exactly the same. struct L8 { uint8_t L; static void readColor(gl::ColorF *dst, const L8 *src); static void writeColor(L8 *dst, const gl::ColorF *src); static void average(L8 *dst, const L8 *src1, const L8 *src2); }; struct R8 { uint8_t R; static void readColor(gl::ColorF *dst, const R8 *src); static void readColor(gl::ColorUI *dst, const R8 *src); static void writeColor(R8 *dst, const gl::ColorF *src); static void writeColor(R8 *dst, const gl::ColorUI *src); static void average(R8 *dst, const R8 *src1, const R8 *src2); }; struct A8 { uint8_t A; static void readColor(gl::ColorF *dst, const A8 *src); static void writeColor(A8 *dst, const gl::ColorF *src); static void average(A8 *dst, const A8 *src1, const A8 *src2); }; struct L8A8 { uint8_t L; uint8_t A; static void readColor(gl::ColorF *dst, const L8A8 *src); static void writeColor(L8A8 *dst, const gl::ColorF *src); static void average(L8A8 *dst, const L8A8 *src1, const L8A8 *src2); }; struct A8L8 { uint8_t A; uint8_t L; static void readColor(gl::ColorF *dst, const A8L8 *src); static void writeColor(A8L8 *dst, const gl::ColorF *src); static void average(A8L8 *dst, const A8L8 *src1, const A8L8 *src2); }; struct R8G8 { uint8_t R; uint8_t G; static void readColor(gl::ColorF *dst, const R8G8 *src); static void readColor(gl::ColorUI *dst, const R8G8 *src); static void writeColor(R8G8 *dst, const gl::ColorF *src); static void writeColor(R8G8 *dst, const gl::ColorUI *src); static void average(R8G8 *dst, const R8G8 *src1, const R8G8 *src2); }; struct R8G8B8 { uint8_t R; uint8_t G; uint8_t B; static void readColor(gl::ColorF *dst, const R8G8B8 *src); static void readColor(gl::ColorUI *dst, const R8G8B8 *src); static void writeColor(R8G8B8 *dst, const gl::ColorF *src); static void writeColor(R8G8B8 *dst, const gl::ColorUI *src); static void average(R8G8B8 *dst, const R8G8B8 *src1, const R8G8B8 *src2); }; struct B8G8R8 { uint8_t B; uint8_t G; uint8_t R; static void readColor(gl::ColorF *dst, const B8G8R8 *src); static void readColor(gl::ColorUI *dst, const B8G8R8 *src); static void writeColor(B8G8R8 *dst, const gl::ColorF *src); static void writeColor(B8G8R8 *dst, const gl::ColorUI *src); static void average(B8G8R8 *dst, const B8G8R8 *src1, const B8G8R8 *src2); }; struct R5G6B5 { // OpenGL ES 2.0.25 spec Section 3.6.2: "Components are packed with the first component in the // most significant bits of the bitfield, and successive component occupying progressively less // significant locations" uint16_t RGB; static void readColor(gl::ColorF *dst, const R5G6B5 *src); static void writeColor(R5G6B5 *dst, const gl::ColorF *src); static void average(R5G6B5 *dst, const R5G6B5 *src1, const R5G6B5 *src2); }; struct B5G6R5 { uint16_t BGR; static void readColor(gl::ColorF *dst, const B5G6R5 *src); static void writeColor(B5G6R5 *dst, const gl::ColorF *src); static void average(B5G6R5 *dst, const B5G6R5 *src1, const B5G6R5 *src2); }; struct A8R8G8B8 { uint8_t A; uint8_t R; uint8_t G; uint8_t B; static void readColor(gl::ColorF *dst, const A8R8G8B8 *src); static void readColor(gl::ColorUI *dst, const A8R8G8B8 *src); static void writeColor(A8R8G8B8 *dst, const gl::ColorF *src); static void writeColor(A8R8G8B8 *dst, const gl::ColorUI *src); static void average(A8R8G8B8 *dst, const A8R8G8B8 *src1, const A8R8G8B8 *src2); }; struct R8G8B8A8 { uint8_t R; uint8_t G; uint8_t B; uint8_t A; static void readColor(gl::ColorF *dst, const R8G8B8A8 *src); static void readColor(gl::ColorUI *dst, const R8G8B8A8 *src); static void writeColor(R8G8B8A8 *dst, const gl::ColorF *src); static void writeColor(R8G8B8A8 *dst, const gl::ColorUI *src); static void average(R8G8B8A8 *dst, const R8G8B8A8 *src1, const R8G8B8A8 *src2); }; struct B8G8R8A8 { uint8_t B; uint8_t G; uint8_t R; uint8_t A; static void readColor(gl::ColorF *dst, const B8G8R8A8 *src); static void readColor(gl::ColorUI *dst, const B8G8R8A8 *src); static void writeColor(B8G8R8A8 *dst, const gl::ColorF *src); static void writeColor(B8G8R8A8 *dst, const gl::ColorUI *src); static void average(B8G8R8A8 *dst, const B8G8R8A8 *src1, const B8G8R8A8 *src2); }; struct B8G8R8X8 { uint8_t B; uint8_t G; uint8_t R; uint8_t X; static void readColor(gl::ColorF *dst, const B8G8R8X8 *src); static void readColor(gl::ColorUI *dst, const B8G8R8X8 *src); static void writeColor(B8G8R8X8 *dst, const gl::ColorF *src); static void writeColor(B8G8R8X8 *dst, const gl::ColorUI *src); static void average(B8G8R8X8 *dst, const B8G8R8X8 *src1, const B8G8R8X8 *src2); }; struct A1R5G5B5 { uint16_t ARGB; static void readColor(gl::ColorF *dst, const A1R5G5B5 *src); static void writeColor(A1R5G5B5 *dst, const gl::ColorF *src); static void average(A1R5G5B5 *dst, const A1R5G5B5 *src1, const A1R5G5B5 *src2); }; struct R5G5B5A1 { // OpenGL ES 2.0.25 spec Section 3.6.2: "Components are packed with the first component in the // most significant // bits of the bitfield, and successive component occupying progressively less significant // locations" uint16_t RGBA; static void readColor(gl::ColorF *dst, const R5G5B5A1 *src); static void writeColor(R5G5B5A1 *dst, const gl::ColorF *src); static void average(R5G5B5A1 *dst, const R5G5B5A1 *src1, const R5G5B5A1 *src2); }; struct R4G4B4A4 { // OpenGL ES 2.0.25 spec Section 3.6.2: "Components are packed with the first component in the // most significant // bits of the bitfield, and successive component occupying progressively less significant // locations" uint16_t RGBA; static void readColor(gl::ColorF *dst, const R4G4B4A4 *src); static void writeColor(R4G4B4A4 *dst, const gl::ColorF *src); static void average(R4G4B4A4 *dst, const R4G4B4A4 *src1, const R4G4B4A4 *src2); }; struct A4R4G4B4 { uint16_t ARGB; static void readColor(gl::ColorF *dst, const A4R4G4B4 *src); static void writeColor(A4R4G4B4 *dst, const gl::ColorF *src); static void average(A4R4G4B4 *dst, const A4R4G4B4 *src1, const A4R4G4B4 *src2); }; struct R16 { uint16_t R; static void readColor(gl::ColorF *dst, const R16 *src); static void readColor(gl::ColorUI *dst, const R16 *src); static void writeColor(R16 *dst, const gl::ColorF *src); static void writeColor(R16 *dst, const gl::ColorUI *src); static void average(R16 *dst, const R16 *src1, const R16 *src2); }; struct R16G16 { uint16_t R; uint16_t G; static void readColor(gl::ColorF *dst, const R16G16 *src); static void readColor(gl::ColorUI *dst, const R16G16 *src); static void writeColor(R16G16 *dst, const gl::ColorF *src); static void writeColor(R16G16 *dst, const gl::ColorUI *src); static void average(R16G16 *dst, const R16G16 *src1, const R16G16 *src2); }; struct R16G16B16 { uint16_t R; uint16_t G; uint16_t B; static void readColor(gl::ColorF *dst, const R16G16B16 *src); static void readColor(gl::ColorUI *dst, const R16G16B16 *src); static void writeColor(R16G16B16 *dst, const gl::ColorF *src); static void writeColor(R16G16B16 *dst, const gl::ColorUI *src); static void average(R16G16B16 *dst, const R16G16B16 *src1, const R16G16B16 *src2); }; struct R16G16B16A16 { uint16_t R; uint16_t G; uint16_t B; uint16_t A; static void readColor(gl::ColorF *dst, const R16G16B16A16 *src); static void readColor(gl::ColorUI *dst, const R16G16B16A16 *src); static void writeColor(R16G16B16A16 *dst, const gl::ColorF *src); static void writeColor(R16G16B16A16 *dst, const gl::ColorUI *src); static void average(R16G16B16A16 *dst, const R16G16B16A16 *src1, const R16G16B16A16 *src2); }; struct R32 { uint32_t R; static void readColor(gl::ColorF *dst, const R32 *src); static void readColor(gl::ColorUI *dst, const R32 *src); static void writeColor(R32 *dst, const gl::ColorF *src); static void writeColor(R32 *dst, const gl::ColorUI *src); static void average(R32 *dst, const R32 *src1, const R32 *src2); }; struct R32G32 { uint32_t R; uint32_t G; static void readColor(gl::ColorF *dst, const R32G32 *src); static void readColor(gl::ColorUI *dst, const R32G32 *src); static void writeColor(R32G32 *dst, const gl::ColorF *src); static void writeColor(R32G32 *dst, const gl::ColorUI *src); static void average(R32G32 *dst, const R32G32 *src1, const R32G32 *src2); }; struct R32G32B32 { uint32_t R; uint32_t G; uint32_t B; static void readColor(gl::ColorF *dst, const R32G32B32 *src); static void readColor(gl::ColorUI *dst, const R32G32B32 *src); static void writeColor(R32G32B32 *dst, const gl::ColorF *src); static void writeColor(R32G32B32 *dst, const gl::ColorUI *src); static void average(R32G32B32 *dst, const R32G32B32 *src1, const R32G32B32 *src2); }; struct R32G32B32A32 { uint32_t R; uint32_t G; uint32_t B; uint32_t A; static void readColor(gl::ColorF *dst, const R32G32B32A32 *src); static void readColor(gl::ColorUI *dst, const R32G32B32A32 *src); static void writeColor(R32G32B32A32 *dst, const gl::ColorF *src); static void writeColor(R32G32B32A32 *dst, const gl::ColorUI *src); static void average(R32G32B32A32 *dst, const R32G32B32A32 *src1, const R32G32B32A32 *src2); }; struct R8S { int8_t R; static void readColor(gl::ColorF *dst, const R8S *src); static void readColor(gl::ColorI *dst, const R8S *src); static void writeColor(R8S *dst, const gl::ColorF *src); static void writeColor(R8S *dst, const gl::ColorI *src); static void average(R8S *dst, const R8S *src1, const R8S *src2); }; struct R8G8S { int8_t R; int8_t G; static void readColor(gl::ColorF *dst, const R8G8S *src); static void readColor(gl::ColorI *dst, const R8G8S *src); static void writeColor(R8G8S *dst, const gl::ColorF *src); static void writeColor(R8G8S *dst, const gl::ColorI *src); static void average(R8G8S *dst, const R8G8S *src1, const R8G8S *src2); }; struct R8G8B8S { int8_t R; int8_t G; int8_t B; static void readColor(gl::ColorF *dst, const R8G8B8S *src); static void readColor(gl::ColorI *dst, const R8G8B8S *src); static void writeColor(R8G8B8S *dst, const gl::ColorF *src); static void writeColor(R8G8B8S *dst, const gl::ColorI *src); static void average(R8G8B8S *dst, const R8G8B8S *src1, const R8G8B8S *src2); }; struct R8G8B8A8S { int8_t R; int8_t G; int8_t B; int8_t A; static void readColor(gl::ColorF *dst, const R8G8B8A8S *src); static void readColor(gl::ColorI *dst, const R8G8B8A8S *src); static void writeColor(R8G8B8A8S *dst, const gl::ColorF *src); static void writeColor(R8G8B8A8S *dst, const gl::ColorI *src); static void average(R8G8B8A8S *dst, const R8G8B8A8S *src1, const R8G8B8A8S *src2); }; struct R16S { int16_t R; static void readColor(gl::ColorF *dst, const R16S *src); static void readColor(gl::ColorI *dst, const R16S *src); static void writeColor(R16S *dst, const gl::ColorF *src); static void writeColor(R16S *dst, const gl::ColorI *src); static void average(R16S *dst, const R16S *src1, const R16S *src2); }; struct R16G16S { int16_t R; int16_t G; static void readColor(gl::ColorF *dst, const R16G16S *src); static void readColor(gl::ColorI *dst, const R16G16S *src); static void writeColor(R16G16S *dst, const gl::ColorF *src); static void writeColor(R16G16S *dst, const gl::ColorI *src); static void average(R16G16S *dst, const R16G16S *src1, const R16G16S *src2); }; struct R16G16B16S { int16_t R; int16_t G; int16_t B; static void readColor(gl::ColorF *dst, const R16G16B16S *src); static void readColor(gl::ColorI *dst, const R16G16B16S *src); static void writeColor(R16G16B16S *dst, const gl::ColorF *src); static void writeColor(R16G16B16S *dst, const gl::ColorI *src); static void average(R16G16B16S *dst, const R16G16B16S *src1, const R16G16B16S *src2); }; struct R16G16B16A16S { int16_t R; int16_t G; int16_t B; int16_t A; static void readColor(gl::ColorF *dst, const R16G16B16A16S *src); static void readColor(gl::ColorI *dst, const R16G16B16A16S *src); static void writeColor(R16G16B16A16S *dst, const gl::ColorF *src); static void writeColor(R16G16B16A16S *dst, const gl::ColorI *src); static void average(R16G16B16A16S *dst, const R16G16B16A16S *src1, const R16G16B16A16S *src2); }; struct R32S { int32_t R; static void readColor(gl::ColorF *dst, const R32S *src); static void readColor(gl::ColorI *dst, const R32S *src); static void writeColor(R32S *dst, const gl::ColorF *src); static void writeColor(R32S *dst, const gl::ColorI *src); static void average(R32S *dst, const R32S *src1, const R32S *src2); }; struct R32G32S { int32_t R; int32_t G; static void readColor(gl::ColorF *dst, const R32G32S *src); static void readColor(gl::ColorI *dst, const R32G32S *src); static void writeColor(R32G32S *dst, const gl::ColorF *src); static void writeColor(R32G32S *dst, const gl::ColorI *src); static void average(R32G32S *dst, const R32G32S *src1, const R32G32S *src2); }; struct R32G32B32S { int32_t R; int32_t G; int32_t B; static void readColor(gl::ColorF *dst, const R32G32B32S *src); static void readColor(gl::ColorI *dst, const R32G32B32S *src); static void writeColor(R32G32B32S *dst, const gl::ColorF *src); static void writeColor(R32G32B32S *dst, const gl::ColorI *src); static void average(R32G32B32S *dst, const R32G32B32S *src1, const R32G32B32S *src2); }; struct R32G32B32A32S { int32_t R; int32_t G; int32_t B; int32_t A; static void readColor(gl::ColorF *dst, const R32G32B32A32S *src); static void readColor(gl::ColorI *dst, const R32G32B32A32S *src); static void writeColor(R32G32B32A32S *dst, const gl::ColorF *src); static void writeColor(R32G32B32A32S *dst, const gl::ColorI *src); static void average(R32G32B32A32S *dst, const R32G32B32A32S *src1, const R32G32B32A32S *src2); }; struct A16B16G16R16F { uint16_t A; uint16_t R; uint16_t G; uint16_t B; static void readColor(gl::ColorF *dst, const A16B16G16R16F *src); static void writeColor(A16B16G16R16F *dst, const gl::ColorF *src); static void average(A16B16G16R16F *dst, const A16B16G16R16F *src1, const A16B16G16R16F *src2); }; struct R16G16B16A16F { uint16_t R; uint16_t G; uint16_t B; uint16_t A; static void readColor(gl::ColorF *dst, const R16G16B16A16F *src); static void writeColor(R16G16B16A16F *dst, const gl::ColorF *src); static void average(R16G16B16A16F *dst, const R16G16B16A16F *src1, const R16G16B16A16F *src2); }; struct R16F { uint16_t R; static void readColor(gl::ColorF *dst, const R16F *src); static void writeColor(R16F *dst, const gl::ColorF *src); static void average(R16F *dst, const R16F *src1, const R16F *src2); }; struct A16F { uint16_t A; static void readColor(gl::ColorF *dst, const A16F *src); static void writeColor(A16F *dst, const gl::ColorF *src); static void average(A16F *dst, const A16F *src1, const A16F *src2); }; struct L16F { uint16_t L; static void readColor(gl::ColorF *dst, const L16F *src); static void writeColor(L16F *dst, const gl::ColorF *src); static void average(L16F *dst, const L16F *src1, const L16F *src2); }; struct L16A16F { uint16_t L; uint16_t A; static void readColor(gl::ColorF *dst, const L16A16F *src); static void writeColor(L16A16F *dst, const gl::ColorF *src); static void average(L16A16F *dst, const L16A16F *src1, const L16A16F *src2); }; struct R16G16F { uint16_t R; uint16_t G; static void readColor(gl::ColorF *dst, const R16G16F *src); static void writeColor(R16G16F *dst, const gl::ColorF *src); static void average(R16G16F *dst, const R16G16F *src1, const R16G16F *src2); }; struct R16G16B16F { uint16_t R; uint16_t G; uint16_t B; static void readColor(gl::ColorF *dst, const R16G16B16F *src); static void writeColor(R16G16B16F *dst, const gl::ColorF *src); static void average(R16G16B16F *dst, const R16G16B16F *src1, const R16G16B16F *src2); }; struct A32B32G32R32F { float A; float R; float G; float B; static void readColor(gl::ColorF *dst, const A32B32G32R32F *src); static void writeColor(A32B32G32R32F *dst, const gl::ColorF *src); static void average(A32B32G32R32F *dst, const A32B32G32R32F *src1, const A32B32G32R32F *src2); }; struct R32G32B32A32F { float R; float G; float B; float A; static void readColor(gl::ColorF *dst, const R32G32B32A32F *src); static void writeColor(R32G32B32A32F *dst, const gl::ColorF *src); static void average(R32G32B32A32F *dst, const R32G32B32A32F *src1, const R32G32B32A32F *src2); }; struct R32F { float R; static void readColor(gl::ColorF *dst, const R32F *src); static void writeColor(R32F *dst, const gl::ColorF *src); static void average(R32F *dst, const R32F *src1, const R32F *src2); }; struct A32F { float A; static void readColor(gl::ColorF *dst, const A32F *src); static void writeColor(A32F *dst, const gl::ColorF *src); static void average(A32F *dst, const A32F *src1, const A32F *src2); }; struct L32F { float L; static void readColor(gl::ColorF *dst, const L32F *src); static void writeColor(L32F *dst, const gl::ColorF *src); static void average(L32F *dst, const L32F *src1, const L32F *src2); }; struct L32A32F { float L; float A; static void readColor(gl::ColorF *dst, const L32A32F *src); static void writeColor(L32A32F *dst, const gl::ColorF *src); static void average(L32A32F *dst, const L32A32F *src1, const L32A32F *src2); }; struct R32G32F { float R; float G; static void readColor(gl::ColorF *dst, const R32G32F *src); static void writeColor(R32G32F *dst, const gl::ColorF *src); static void average(R32G32F *dst, const R32G32F *src1, const R32G32F *src2); }; struct R32G32B32F { float R; float G; float B; static void readColor(gl::ColorF *dst, const R32G32B32F *src); static void writeColor(R32G32B32F *dst, const gl::ColorF *src); static void average(R32G32B32F *dst, const R32G32B32F *src1, const R32G32B32F *src2); }; struct R10G10B10A2 { uint32_t R : 10; uint32_t G : 10; uint32_t B : 10; uint32_t A : 2; static void readColor(gl::ColorF *dst, const R10G10B10A2 *src); static void readColor(gl::ColorUI *dst, const R10G10B10A2 *src); static void writeColor(R10G10B10A2 *dst, const gl::ColorF *src); static void writeColor(R10G10B10A2 *dst, const gl::ColorUI *src); static void average(R10G10B10A2 *dst, const R10G10B10A2 *src1, const R10G10B10A2 *src2); }; static_assert(sizeof(R10G10B10A2) == 4, "R10G10B10A2 struct not 32-bits."); struct R9G9B9E5 { uint32_t R : 9; uint32_t G : 9; uint32_t B : 9; uint32_t E : 5; static void readColor(gl::ColorF *dst, const R9G9B9E5 *src); static void writeColor(R9G9B9E5 *dst, const gl::ColorF *src); static void average(R9G9B9E5 *dst, const R9G9B9E5 *src1, const R9G9B9E5 *src2); }; static_assert(sizeof(R9G9B9E5) == 4, "R9G9B9E5 struct not 32-bits."); struct R11G11B10F { uint32_t R : 11; uint32_t G : 11; uint32_t B : 10; static void readColor(gl::ColorF *dst, const R11G11B10F *src); static void writeColor(R11G11B10F *dst, const gl::ColorF *src); static void average(R11G11B10F *dst, const R11G11B10F *src1, const R11G11B10F *src2); }; static_assert(sizeof(R11G11B10F) == 4, "R11G11B10F struct not 32-bits."); } // namespace angle #endif // IMAGEUTIL_IMAGEFORMATS_H_