mirror of
https://github.com/love2d/love.git
synced 2026-08-13 00:50:51 +02:00
Alex Szpakowski
320 lines
15 KiB
C++
320 lines
15 KiB
C++
/**
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* Copyright (c) 2006-2021 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "pixelformat.h"
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#include "StringMap.h"
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namespace love
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{
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static PixelFormatInfo formatInfo[] =
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{
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// components, blockW, blockH, blockSize, color, depth, stencil, compressed, dataType
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{ 0, 1, 1, 0, false, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_UNKNOWN
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{ 0, 1, 1, 0, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_NORMAL
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{ 0, 1, 1, 0, true, false, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_HDR
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{ 1, 1, 1, 1, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_R8_UNORM
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{ 1, 1, 1, 1, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_R8_INT
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{ 1, 1, 1, 1, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_R8_UINT
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{ 1, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_R16_UNORM
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{ 1, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_R16_FLOAT
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{ 1, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_R16_INT
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{ 1, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_R16_UINT
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{ 1, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_R32_FLOAT
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{ 1, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_R32_INT
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{ 1, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_R32_UINT
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{ 2, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RG8_UNORM
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{ 2, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_RG8_INT
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{ 2, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_RG8_UINT
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{ 2, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_LA8_UNORM
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{ 2, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RG16_UNORM
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{ 2, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_RG16_FLOAT
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{ 2, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_RG16_INT
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{ 2, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_RG16_UINT
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{ 2, 1, 1, 8, true, false, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_RG32_FLOAT
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{ 2, 1, 1, 8, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_RG32_INT
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{ 2, 1, 1, 8, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_RG32_UINT
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{ 4, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RGBA8_UNORM
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{ 4, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_sRGBA8_UNORM
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{ 4, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_RGBA8_INT
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{ 4, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_RGBA8_UINT
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{ 4, 1, 1, 8, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RGBA16_UNORM
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{ 4, 1, 1, 8, true, false, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_RGBA16_FLOAT
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{ 4, 1, 1, 8, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_RGBA16_INT
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{ 4, 1, 1, 8, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_RGBA16_UINT
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{ 4, 1, 1, 16, true, false, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_RGBA32_FLOAT
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{ 4, 1, 1, 16, true, false, false, false, PIXELFORMATTYPE_SINT }, // PIXELFORMAT_RGBA32_INT
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{ 4, 1, 1, 16, true, false, false, false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_RGBA32_UINT
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{ 4, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RGBA4_UNORM
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{ 4, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RGB5A1_UNORM
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{ 3, 1, 1, 2, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RGB565_UNORM
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{ 4, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_RGB10A2_UNORM
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{ 3, 1, 1, 4, true, false, false, false, PIXELFORMATTYPE_UFLOAT }, // PIXELFORMAT_RG11B10_FLOAT
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{ 1, 1, 1, 1, false, false, true , false, PIXELFORMATTYPE_UINT }, // PIXELFORMAT_STENCIL8
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{ 1, 1, 1, 2, false, true, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_DEPTH16_UNORM
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{ 1, 1, 1, 3, false, true, false, false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_DEPTH24_UNORM
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{ 1, 1, 1, 4, false, true, false, false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_DEPTH32_FLOAT
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{ 2, 1, 1, 4, false, true, true , false, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_DEPTH24_UNORM_STENCIL8
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{ 2, 1, 1, 5, false, true, true , false, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_DEPTH32_FLOAT_STENCIL8
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{ 3, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_DXT1_UNORM
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{ 4, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_DXT3_UNORM
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{ 4, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_DXT5_UNORM
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{ 1, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_BC4_UNORM
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{ 1, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_SNORM }, // PIXELFORMAT_BC4_SNORM
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{ 2, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_BC5_UNORM
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{ 2, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_SNORM }, // PIXELFORMAT_BC5_SNORM
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{ 3, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_UFLOAT }, // PIXELFORMAT_BC6H_UFLOAT
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{ 3, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_SFLOAT }, // PIXELFORMAT_BC6H_FLOAT
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{ 4, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_BC7_UNORM
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{ 3, 16, 8, 32, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_PVR1_RGB2_UNORM
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{ 3, 8, 8, 32, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_PVR1_RGB4_UNORM
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{ 4, 16, 8, 32, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_PVR1_RGBA2_UNORM
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{ 4, 8, 8, 32, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_PVR1_RGBA4_UNORM
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{ 3, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ETC1_UNORM
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{ 3, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ETC2_RGB_UNORM
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{ 4, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ETC2_RGBA_UNORM
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{ 4, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ETC2_RGBA1_UNORM
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{ 1, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_EAC_R_UNORM
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{ 1, 4, 4, 8, true, false, false, true, PIXELFORMATTYPE_SNORM }, // PIXELFORMAT_EAC_R_SNORM
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{ 2, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_EAC_RG_UNORM
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{ 2, 4, 4, 16, true, false, false, true, PIXELFORMATTYPE_SNORM }, // PIXELFORMAT_EAC_RG_SNORM
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{ 4, 4, 4, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_4x4
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{ 4, 5, 4, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_5x4
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{ 4, 5, 5, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_5x5
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{ 4, 6, 5, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_6x5
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{ 4, 6, 6, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_6x6
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{ 4, 8, 5, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_8x5
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{ 4, 8, 6, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_8x6
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{ 4, 8, 8, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_8x8
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{ 4, 8, 5, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_10x5
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{ 4, 10, 6, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_10x6
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{ 4, 10, 8, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_10x8
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{ 4, 10, 10, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_10x10
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{ 4, 12, 10, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_12x10
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{ 4, 12, 12, 1, true, false, false, true, PIXELFORMATTYPE_UNORM }, // PIXELFORMAT_ASTC_12x12
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};
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static_assert(sizeof(formatInfo) / sizeof(PixelFormatInfo) == PIXELFORMAT_MAX_ENUM, "Update the formatInfo array when adding or removing a PixelFormat");
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static StringMap<PixelFormat, PIXELFORMAT_MAX_ENUM>::Entry formatEntries[] =
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{
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{ "unknown", PIXELFORMAT_UNKNOWN },
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{ "normal", PIXELFORMAT_NORMAL },
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{ "hdr", PIXELFORMAT_HDR },
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{ "r8", PIXELFORMAT_R8_UNORM },
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{ "r8i", PIXELFORMAT_R8_INT },
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{ "r8ui", PIXELFORMAT_R8_UINT },
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{ "r16", PIXELFORMAT_R16_UNORM },
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{ "r16f", PIXELFORMAT_R16_FLOAT },
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{ "r16i", PIXELFORMAT_R16_INT },
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{ "r16ui", PIXELFORMAT_R16_UINT },
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{ "r32f", PIXELFORMAT_R32_FLOAT },
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{ "r32i", PIXELFORMAT_R32_INT },
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{ "r32ui", PIXELFORMAT_R32_UINT },
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{ "rg8", PIXELFORMAT_RG8_UNORM },
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{ "rg8i", PIXELFORMAT_RG8_INT },
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{ "rg8ui", PIXELFORMAT_RG8_UINT },
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{ "la8", PIXELFORMAT_LA8_UNORM },
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{ "rg16", PIXELFORMAT_RG16_UNORM },
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{ "rg16f", PIXELFORMAT_RG16_FLOAT },
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{ "rg16i", PIXELFORMAT_RG16_INT },
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{ "rg16ui", PIXELFORMAT_RG16_UINT },
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{ "rg32f", PIXELFORMAT_RG32_FLOAT },
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{ "rg32i", PIXELFORMAT_RG32_INT },
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{ "rg32ui", PIXELFORMAT_RG32_UINT },
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{ "rgba8", PIXELFORMAT_RGBA8_UNORM },
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{ "srgba8", PIXELFORMAT_sRGBA8_UNORM },
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{ "rgba8i", PIXELFORMAT_RGBA8_INT },
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{ "rgba8ui", PIXELFORMAT_RGBA8_UINT },
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{ "rgba16", PIXELFORMAT_RGBA16_UNORM },
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{ "rgba16f", PIXELFORMAT_RGBA16_FLOAT },
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{ "rgba16i", PIXELFORMAT_RGBA16_INT },
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{ "rgba16ui", PIXELFORMAT_RGBA16_UINT },
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{ "rgba32f", PIXELFORMAT_RGBA32_FLOAT },
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{ "rgba32i", PIXELFORMAT_RGBA32_INT },
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{ "rgba32ui", PIXELFORMAT_RGBA32_UINT },
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{ "rgba4", PIXELFORMAT_RGBA4_UNORM },
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{ "rgb5a1", PIXELFORMAT_RGB5A1_UNORM },
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{ "rgb565", PIXELFORMAT_RGB565_UNORM },
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{ "rgb10a2", PIXELFORMAT_RGB10A2_UNORM },
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{ "rg11b10f", PIXELFORMAT_RG11B10_FLOAT },
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{ "stencil8", PIXELFORMAT_STENCIL8 },
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{ "depth16", PIXELFORMAT_DEPTH16_UNORM },
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{ "depth24", PIXELFORMAT_DEPTH24_UNORM },
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{ "depth32f", PIXELFORMAT_DEPTH32_FLOAT },
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{ "depth24stencil8", PIXELFORMAT_DEPTH24_UNORM_STENCIL8 },
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{ "depth32fstencil8", PIXELFORMAT_DEPTH32_FLOAT_STENCIL8 },
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{ "DXT1", PIXELFORMAT_DXT1_UNORM },
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{ "DXT3", PIXELFORMAT_DXT3_UNORM },
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{ "DXT5", PIXELFORMAT_DXT5_UNORM },
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{ "BC4", PIXELFORMAT_BC4_UNORM },
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{ "BC4s", PIXELFORMAT_BC4_SNORM },
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{ "BC5", PIXELFORMAT_BC5_UNORM },
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{ "BC5s", PIXELFORMAT_BC5_SNORM },
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{ "BC6h", PIXELFORMAT_BC6H_UFLOAT },
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{ "BC6hs", PIXELFORMAT_BC6H_FLOAT },
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{ "BC7", PIXELFORMAT_BC7_UNORM },
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{ "PVR1rgb2", PIXELFORMAT_PVR1_RGB2_UNORM },
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{ "PVR1rgb4", PIXELFORMAT_PVR1_RGB4_UNORM },
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{ "PVR1rgba2", PIXELFORMAT_PVR1_RGBA2_UNORM },
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{ "PVR1rgba4", PIXELFORMAT_PVR1_RGBA4_UNORM },
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{ "ETC1", PIXELFORMAT_ETC1_UNORM },
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{ "ETC2rgb", PIXELFORMAT_ETC2_RGB_UNORM },
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{ "ETC2rgba", PIXELFORMAT_ETC2_RGBA_UNORM },
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{ "ETC2rgba1", PIXELFORMAT_ETC2_RGBA1_UNORM },
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{ "EACr", PIXELFORMAT_EAC_R_UNORM },
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{ "EACrs", PIXELFORMAT_EAC_R_SNORM },
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{ "EACrg", PIXELFORMAT_EAC_RG_UNORM },
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{ "EACrgs", PIXELFORMAT_EAC_RG_SNORM },
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{ "ASTC4x4", PIXELFORMAT_ASTC_4x4 },
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{ "ASTC5x4", PIXELFORMAT_ASTC_5x4 },
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{ "ASTC5x5", PIXELFORMAT_ASTC_5x5 },
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{ "ASTC6x5", PIXELFORMAT_ASTC_6x5 },
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{ "ASTC6x6", PIXELFORMAT_ASTC_6x6 },
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{ "ASTC8x5", PIXELFORMAT_ASTC_8x5 },
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{ "ASTC8x6", PIXELFORMAT_ASTC_8x6 },
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{ "ASTC8x8", PIXELFORMAT_ASTC_8x8 },
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{ "ASTC10x5", PIXELFORMAT_ASTC_10x5 },
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{ "ASTC10x6", PIXELFORMAT_ASTC_10x6 },
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{ "ASTC10x8", PIXELFORMAT_ASTC_10x8 },
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{ "ASTC10x10", PIXELFORMAT_ASTC_10x10 },
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{ "ASTC12x10", PIXELFORMAT_ASTC_12x10 },
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{ "ASTC12x12", PIXELFORMAT_ASTC_12x12 },
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};
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static_assert(sizeof(formatEntries) / sizeof(formatEntries[0]) == (size_t) PIXELFORMAT_MAX_ENUM, "pixel format string map is missing entries!");
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static StringMap<PixelFormat, PIXELFORMAT_MAX_ENUM> formats(formatEntries, sizeof(formatEntries));
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bool getConstant(const char *in, PixelFormat &out)
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{
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return formats.find(in, out);
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}
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bool getConstant(PixelFormat in, const char *&out)
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{
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return formats.find(in, out);
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}
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const PixelFormatInfo &getPixelFormatInfo(PixelFormat format)
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{
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return formatInfo[format];
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}
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bool isPixelFormatCompressed(PixelFormat format)
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{
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return formatInfo[format].compressed;
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}
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bool isPixelFormatDepthStencil(PixelFormat format)
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{
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const PixelFormatInfo &info = formatInfo[format];
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return info.depth || info.stencil;
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}
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bool isPixelFormatDepth(PixelFormat format)
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{
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return formatInfo[format].depth;
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}
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bool isPixelFormatStencil(PixelFormat format)
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{
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return formatInfo[format].stencil;
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}
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bool isPixelFormatInteger(PixelFormat format)
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{
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auto type = formatInfo[format].dataType;
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return type == PIXELFORMATTYPE_SINT || type == PIXELFORMATTYPE_UINT;
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}
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PixelFormat getSRGBPixelFormat(PixelFormat format)
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{
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if (format == PIXELFORMAT_RGBA8_UNORM)
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return PIXELFORMAT_sRGBA8_UNORM;
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return format;
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}
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PixelFormat getLinearPixelFormat(PixelFormat format)
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{
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if (format == PIXELFORMAT_sRGBA8_UNORM)
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return PIXELFORMAT_RGBA8_UNORM;
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return format;
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}
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size_t getPixelFormatBlockSize(PixelFormat format)
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{
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return formatInfo[format].blockSize;
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}
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size_t getPixelFormatUncompressedRowSize(PixelFormat format, int width)
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{
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const PixelFormatInfo &info = formatInfo[format];
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if (info.compressed) return 0;
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return info.blockSize * width / info.blockWidth;
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}
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size_t getPixelFormatCompressedBlockRowSize(PixelFormat format, int width)
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{
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const PixelFormatInfo &info = formatInfo[format];
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if (!info.compressed) return 0;
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return info.blockSize * ((width + info.blockWidth - 1) / info.blockWidth);
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}
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size_t getPixelFormatCompressedBlockRowCount(PixelFormat format, int height)
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{
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const PixelFormatInfo &info = formatInfo[format];
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if (!info.compressed) return 0;
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return (height + info.blockHeight - 1) / info.blockHeight;
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}
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size_t getPixelFormatSliceSize(PixelFormat format, int width, int height)
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{
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const PixelFormatInfo &info = formatInfo[format];
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size_t blockW = (width + info.blockWidth - 1) / info.blockWidth;
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size_t blockH = (height + info.blockHeight - 1) / info.blockHeight;
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return info.blockSize * blockW * blockH;
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}
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int getPixelFormatColorComponents(PixelFormat format)
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{
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return formatInfo[format].components;
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}
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} // love
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