mirror of
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The bones of what will become a Metal backend.
This isn't anywhere close to usable (not even a blank screen will work), let alone complete. It's about 20% done.
This commit is contained in:
Alex Szpakowski
@@ -0,0 +1,298 @@
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/**
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* Copyright (c) 2006-2020 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 "Metal.h"
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namespace love
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{
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namespace graphics
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{
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namespace metal
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{
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MTLTextureType Metal::getTextureType(TextureType type, int msaa)
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{
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switch (type)
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{
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case TEXTURE_2D: return msaa > 1 ? MTLTextureType2DMultisample : MTLTextureType2D;
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case TEXTURE_VOLUME: return MTLTextureType3D;
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case TEXTURE_2D_ARRAY: return MTLTextureType2DArray;
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case TEXTURE_CUBE: return MTLTextureTypeCube;
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case TEXTURE_MAX_ENUM: return MTLTextureType2D;
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}
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return MTLTextureType2D;
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}
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MTLPixelFormat Metal::convertPixelFormat(PixelFormat format, bool &isSRGB)
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{
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MTLPixelFormat mtlformat = MTLPixelFormatRGBA8Unorm;
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if (format == PIXELFORMAT_RGBA8_UNORM && isSRGB)
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format = PIXELFORMAT_sRGBA8_UNORM;
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if (!isPixelFormatCompressed(format) && format != PIXELFORMAT_sRGBA8_UNORM)
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isSRGB = false;
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switch (format)
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{
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case PIXELFORMAT_R8_UNORM:
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mtlformat = MTLPixelFormatR8Unorm;
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break;
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case PIXELFORMAT_RG8_UNORM:
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mtlformat = MTLPixelFormatRG8Unorm;
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break;
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case PIXELFORMAT_RGBA8_UNORM:
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mtlformat = MTLPixelFormatRGBA8Unorm;
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break;
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case PIXELFORMAT_sRGBA8_UNORM:
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mtlformat = MTLPixelFormatRGBA8Unorm_sRGB;
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break;
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case PIXELFORMAT_R16_UNORM:
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mtlformat = MTLPixelFormatR16Unorm;
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break;
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case PIXELFORMAT_RG16_UNORM:
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mtlformat = MTLPixelFormatRG16Unorm;
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break;
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case PIXELFORMAT_RGBA16_UNORM:
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mtlformat = MTLPixelFormatRGBA16Unorm;
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break;
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case PIXELFORMAT_R16_FLOAT:
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mtlformat = MTLPixelFormatR16Float;
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break;
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case PIXELFORMAT_RG16_FLOAT:
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mtlformat = MTLPixelFormatRG16Float;
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break;
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case PIXELFORMAT_RGBA16_FLOAT:
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mtlformat = MTLPixelFormatRGBA16Float;
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break;
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case PIXELFORMAT_R32_FLOAT:
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mtlformat = MTLPixelFormatR32Float;
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break;
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case PIXELFORMAT_RG32_FLOAT:
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mtlformat = MTLPixelFormatRG32Float;
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break;
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case PIXELFORMAT_RGBA32_FLOAT:
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mtlformat = MTLPixelFormatRGBA32Float;
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break;
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case PIXELFORMAT_LA8_UNORM:
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mtlformat = MTLPixelFormatRGBA8Unorm;
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break;
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case PIXELFORMAT_RGBA4_UNORM:
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#ifdef LOVE_IOS
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mtlformat = MTLPixelFormatABGR4Unorm;
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#else
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mtlformat = MTLPixelFormatRGBA8Unorm;
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#endif
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break;
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case PIXELFORMAT_RGB5A1_UNORM:
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#ifdef LOVE_IOS
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mtlformat = MTLPixelFormatA1BGR5Unorm;
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#else
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mtlformat = MTLPixelFormatRGBA8Unorm;
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#endif
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break;
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case PIXELFORMAT_RGB565_UNORM:
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#ifdef LOVE_IOS
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mtlformat = MTLPixelFormatB5G6R5Unorm;
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#else
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mtlformat = MTLPixelFormatRGBA8Unorm;
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#endif
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break;
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case PIXELFORMAT_RGB10A2_UNORM:
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mtlformat = MTLPixelFormatRGB10A2Unorm;
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break;
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case PIXELFORMAT_RG11B10_FLOAT:
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mtlformat = MTLPixelFormatRG11B10Float;
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break;
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case PIXELFORMAT_STENCIL8:
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mtlformat = MTLPixelFormatStencil8;
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break;
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case PIXELFORMAT_DEPTH16_UNORM:
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#ifdef LOVE_IOS
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mtlformat = MTLPixelFormatDepth32Float;
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#else
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mtlformat = MTLPixelFormatDepth16Unorm;
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#endif
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break;
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case PIXELFORMAT_DEPTH24_UNORM:
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mtlformat = MTLPixelFormatDepth32Float;
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break;
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case PIXELFORMAT_DEPTH32_FLOAT:
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mtlformat = MTLPixelFormatDepth32Float;
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break;
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case PIXELFORMAT_DEPTH24_UNORM_STENCIL8:
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mtlformat = MTLPixelFormatDepth24Unorm_Stencil8;
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break;
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case PIXELFORMAT_DEPTH32_FLOAT_STENCIL8:
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mtlformat = MTLPixelFormatDepth32Float_Stencil8;
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break;
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case PIXELFORMAT_DXT1_UNORM:
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#ifndef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatBC1_RGBA_sRGB : MTLPixelFormatBC1_RGBA;
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#endif
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break;
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case PIXELFORMAT_DXT3_UNORM:
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#ifndef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatBC2_RGBA_sRGB : MTLPixelFormatBC2_RGBA;
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#endif
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break;
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case PIXELFORMAT_DXT5_UNORM:
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#ifndef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatBC3_RGBA_sRGB : MTLPixelFormatBC3_RGBA;
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#endif
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break;
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case PIXELFORMAT_BC4_UNORM:
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#ifndef LOVE_IOS
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isSRGB = false;
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mtlformat = MTLPixelFormatBC4_RUnorm;
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#endif
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break;
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case PIXELFORMAT_BC4_SNORM:
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#ifndef LOVE_IOS
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isSRGB = false;
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mtlformat = MTLPixelFormatBC4_RSnorm;
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#endif
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break;
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case PIXELFORMAT_BC5_UNORM:
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#ifndef LOVE_IOS
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isSRGB = false;
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mtlformat = MTLPixelFormatBC5_RGUnorm;
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#endif
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break;
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case PIXELFORMAT_BC5_SNORM:
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#ifndef LOVE_IOS
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isSRGB = false;
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mtlformat = MTLPixelFormatBC5_RGSnorm;
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#endif
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break;
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case PIXELFORMAT_BC6H_UFLOAT:
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#ifndef LOVE_IOS
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isSRGB = false;
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mtlformat = MTLPixelFormatBC6H_RGBUfloat;
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#endif
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break;
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case PIXELFORMAT_BC6H_FLOAT:
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#ifndef LOVE_IOS
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isSRGB = false;
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mtlformat = MTLPixelFormatBC6H_RGBFloat;
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#endif
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break;
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case PIXELFORMAT_BC7_UNORM:
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#ifndef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatBC7_RGBAUnorm_sRGB : MTLPixelFormatBC7_RGBAUnorm;
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#endif
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break;
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case PIXELFORMAT_PVR1_RGB2_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatPVRTC_RGB_2BPP_sRGB : MTLPixelFormatPVRTC_RGB_2BPP;
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#endif
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break;
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case PIXELFORMAT_PVR1_RGB4_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatPVRTC_RGB_4BPP_sRGB : MTLPixelFormatPVRTC_RGB_4BPP;
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#endif
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break;
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case PIXELFORMAT_PVR1_RGBA2_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatPVRTC_RGB_2BPP_sRGB : MTLPixelFormatPVRTC_RGBA_2BPP;
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#endif
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break;
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case PIXELFORMAT_PVR1_RGBA4_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatPVRTC_RGB_4BPP_sRGB : MTLPixelFormatPVRTC_RGBA_4BPP;
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#endif
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break;
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case PIXELFORMAT_ETC1_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatETC2_RGB8_sRGB : MTLPixelFormatETC2_RGB8;
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#endif
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break;
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case PIXELFORMAT_ETC2_RGB_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatETC2_RGB8_sRGB : MTLPixelFormatETC2_RGB8;
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#endif
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break;
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case PIXELFORMAT_ETC2_RGBA_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatEAC_RGBA8_sRGB : MTLPixelFormatEAC_RGBA8;
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#endif
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break;
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case PIXELFORMAT_ETC2_RGBA1_UNORM:
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#ifdef LOVE_IOS
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mtlformat = isSRGB ? MTLPixelFormatETC2_RGBA1_sRGB : MTLPixelFormatETC2_RGBA1;
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#endif
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break;
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case PIXELFORMAT_EAC_R_UNORM:
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break;
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case PIXELFORMAT_EAC_R_SNORM:
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break;
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case PIXELFORMAT_EAC_RG_UNORM:
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break;
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case PIXELFORMAT_EAC_RG_SNORM:
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break;
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case PIXELFORMAT_ASTC_4x4:
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break;
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case PIXELFORMAT_ASTC_5x4:
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break;
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case PIXELFORMAT_ASTC_5x5:
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break;
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case PIXELFORMAT_ASTC_6x5:
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break;
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case PIXELFORMAT_ASTC_6x6:
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break;
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case PIXELFORMAT_ASTC_8x5:
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break;
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case PIXELFORMAT_ASTC_8x6:
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break;
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case PIXELFORMAT_ASTC_8x8:
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break;
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case PIXELFORMAT_ASTC_10x5:
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break;
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case PIXELFORMAT_ASTC_10x6:
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break;
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case PIXELFORMAT_ASTC_10x8:
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break;
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case PIXELFORMAT_ASTC_10x10:
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break;
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case PIXELFORMAT_ASTC_12x10:
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break;
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case PIXELFORMAT_ASTC_12x12:
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break;
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case PIXELFORMAT_UNKNOWN:
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case PIXELFORMAT_NORMAL:
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case PIXELFORMAT_HDR:
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case PIXELFORMAT_MAX_ENUM:
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break;
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}
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return mtlformat;
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}
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Metal metal;
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} // metal
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} // graphics
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} // love
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