416 lines
17 KiB
C++
416 lines
17 KiB
C++
/**************************************************************************/
|
|
/* pixel_formats.h */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
/**************************************************************************/
|
|
/* */
|
|
/* Portions of this code were derived from MoltenVK. */
|
|
/* */
|
|
/* Copyright (c) 2015-2023 The Brenwill Workshop Ltd. */
|
|
/* (http://www.brenwill.com) */
|
|
/* */
|
|
/* Licensed under the Apache License, Version 2.0 (the "License"); */
|
|
/* you may not use this file except in compliance with the License. */
|
|
/* You may obtain a copy of the License at */
|
|
/* */
|
|
/* http://www.apache.org/licenses/LICENSE-2.0 */
|
|
/* */
|
|
/* Unless required by applicable law or agreed to in writing, software */
|
|
/* distributed under the License is distributed on an "AS IS" BASIS, */
|
|
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
|
|
/* implied. See the License for the specific language governing */
|
|
/* permissions and limitations under the License. */
|
|
/**************************************************************************/
|
|
|
|
#ifndef PIXEL_FORMATS_H
|
|
#define PIXEL_FORMATS_H
|
|
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
|
|
|
|
#import "servers/rendering/rendering_device.h"
|
|
|
|
#import <Metal/Metal.h>
|
|
|
|
static const uint32_t _mtlPixelFormatCount = 256;
|
|
static const uint32_t _mtlPixelFormatCoreCount = MTLPixelFormatX32_Stencil8 + 2; // The actual last enum value is not available on iOS.
|
|
static const uint32_t _mtlVertexFormatCount = MTLVertexFormatHalf + 1;
|
|
|
|
#pragma mark -
|
|
#pragma mark Metal format capabilities
|
|
|
|
typedef enum : uint16_t {
|
|
|
|
kMTLFmtCapsNone = 0,
|
|
/*! The format can be used in a shader read operation. */
|
|
kMTLFmtCapsRead = (1 << 0),
|
|
/*! The format can be used in a shader filter operation during sampling. */
|
|
kMTLFmtCapsFilter = (1 << 1),
|
|
/*! The format can be used in a shader write operation. */
|
|
kMTLFmtCapsWrite = (1 << 2),
|
|
/*! The format can be used with atomic operations. */
|
|
kMTLFmtCapsAtomic = (1 << 3),
|
|
/*! The format can be used as a color attachment. */
|
|
kMTLFmtCapsColorAtt = (1 << 4),
|
|
/*! The format can be used as a depth-stencil attachment. */
|
|
kMTLFmtCapsDSAtt = (1 << 5),
|
|
/*! The format can be used with blend operations. */
|
|
kMTLFmtCapsBlend = (1 << 6),
|
|
/*! The format can be used as a destination for multisample antialias (MSAA) data. */
|
|
kMTLFmtCapsMSAA = (1 << 7),
|
|
/*! The format can be used as a resolve attachment. */
|
|
kMTLFmtCapsResolve = (1 << 8),
|
|
kMTLFmtCapsVertex = (1 << 9),
|
|
|
|
kMTLFmtCapsRF = (kMTLFmtCapsRead | kMTLFmtCapsFilter),
|
|
kMTLFmtCapsRC = (kMTLFmtCapsRead | kMTLFmtCapsColorAtt),
|
|
kMTLFmtCapsRCB = (kMTLFmtCapsRC | kMTLFmtCapsBlend),
|
|
kMTLFmtCapsRCM = (kMTLFmtCapsRC | kMTLFmtCapsMSAA),
|
|
kMTLFmtCapsRCMB = (kMTLFmtCapsRCM | kMTLFmtCapsBlend),
|
|
kMTLFmtCapsRWC = (kMTLFmtCapsRC | kMTLFmtCapsWrite),
|
|
kMTLFmtCapsRWCB = (kMTLFmtCapsRWC | kMTLFmtCapsBlend),
|
|
kMTLFmtCapsRWCM = (kMTLFmtCapsRWC | kMTLFmtCapsMSAA),
|
|
kMTLFmtCapsRWCMB = (kMTLFmtCapsRWCM | kMTLFmtCapsBlend),
|
|
kMTLFmtCapsRFCMRB = (kMTLFmtCapsRCMB | kMTLFmtCapsFilter | kMTLFmtCapsResolve),
|
|
kMTLFmtCapsRFWCMB = (kMTLFmtCapsRWCMB | kMTLFmtCapsFilter),
|
|
kMTLFmtCapsAll = (kMTLFmtCapsRFWCMB | kMTLFmtCapsResolve),
|
|
|
|
kMTLFmtCapsDRM = (kMTLFmtCapsDSAtt | kMTLFmtCapsRead | kMTLFmtCapsMSAA),
|
|
kMTLFmtCapsDRFM = (kMTLFmtCapsDRM | kMTLFmtCapsFilter),
|
|
kMTLFmtCapsDRMR = (kMTLFmtCapsDRM | kMTLFmtCapsResolve),
|
|
kMTLFmtCapsDRFMR = (kMTLFmtCapsDRFM | kMTLFmtCapsResolve),
|
|
|
|
kMTLFmtCapsChromaSubsampling = kMTLFmtCapsRF,
|
|
kMTLFmtCapsMultiPlanar = kMTLFmtCapsChromaSubsampling,
|
|
} MTLFmtCaps;
|
|
|
|
inline MTLFmtCaps operator|(MTLFmtCaps p_left, MTLFmtCaps p_right) {
|
|
return static_cast<MTLFmtCaps>(static_cast<uint32_t>(p_left) | p_right);
|
|
}
|
|
|
|
inline MTLFmtCaps &operator|=(MTLFmtCaps &p_left, MTLFmtCaps p_right) {
|
|
return (p_left = p_left | p_right);
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark Metal view classes
|
|
|
|
enum class MTLViewClass : uint8_t {
|
|
None,
|
|
Color8,
|
|
Color16,
|
|
Color32,
|
|
Color64,
|
|
Color128,
|
|
PVRTC_RGB_2BPP,
|
|
PVRTC_RGB_4BPP,
|
|
PVRTC_RGBA_2BPP,
|
|
PVRTC_RGBA_4BPP,
|
|
EAC_R11,
|
|
EAC_RG11,
|
|
EAC_RGBA8,
|
|
ETC2_RGB8,
|
|
ETC2_RGB8A1,
|
|
ASTC_4x4,
|
|
ASTC_5x4,
|
|
ASTC_5x5,
|
|
ASTC_6x5,
|
|
ASTC_6x6,
|
|
ASTC_8x5,
|
|
ASTC_8x6,
|
|
ASTC_8x8,
|
|
ASTC_10x5,
|
|
ASTC_10x6,
|
|
ASTC_10x8,
|
|
ASTC_10x10,
|
|
ASTC_12x10,
|
|
ASTC_12x12,
|
|
BC1_RGBA,
|
|
BC2_RGBA,
|
|
BC3_RGBA,
|
|
BC4_R,
|
|
BC5_RG,
|
|
BC6H_RGB,
|
|
BC7_RGBA,
|
|
Depth24_Stencil8,
|
|
Depth32_Stencil8,
|
|
BGRA10_XR,
|
|
BGR10_XR
|
|
};
|
|
|
|
#pragma mark -
|
|
#pragma mark Format descriptors
|
|
|
|
/** Enumerates the data type of a format. */
|
|
enum class MTLFormatType {
|
|
None, /**< Format type is unknown. */
|
|
ColorHalf, /**< A 16-bit floating point color. */
|
|
ColorFloat, /**< A 32-bit floating point color. */
|
|
ColorInt8, /**< A signed 8-bit integer color. */
|
|
ColorUInt8, /**< An unsigned 8-bit integer color. */
|
|
ColorInt16, /**< A signed 16-bit integer color. */
|
|
ColorUInt16, /**< An unsigned 16-bit integer color. */
|
|
ColorInt32, /**< A signed 32-bit integer color. */
|
|
ColorUInt32, /**< An unsigned 32-bit integer color. */
|
|
DepthStencil, /**< A depth and stencil value. */
|
|
Compressed, /**< A block-compressed color. */
|
|
};
|
|
|
|
typedef struct Extent2D {
|
|
uint32_t width;
|
|
uint32_t height;
|
|
} Extent2D;
|
|
|
|
/** Describes the properties of a DataFormat, including the corresponding Metal pixel and vertex format. */
|
|
typedef struct DataFormatDesc {
|
|
RD::DataFormat dataFormat;
|
|
MTLPixelFormat mtlPixelFormat;
|
|
MTLPixelFormat mtlPixelFormatSubstitute;
|
|
MTLVertexFormat mtlVertexFormat;
|
|
MTLVertexFormat mtlVertexFormatSubstitute;
|
|
uint8_t chromaSubsamplingPlaneCount;
|
|
uint8_t chromaSubsamplingComponentBits;
|
|
Extent2D blockTexelSize;
|
|
uint32_t bytesPerBlock;
|
|
MTLFormatType formatType;
|
|
const char *name;
|
|
bool hasReportedSubstitution;
|
|
|
|
inline double bytesPerTexel() const { return (double)bytesPerBlock / (double)(blockTexelSize.width * blockTexelSize.height); }
|
|
|
|
inline bool isSupported() const { return (mtlPixelFormat != MTLPixelFormatInvalid || chromaSubsamplingPlaneCount > 1); }
|
|
inline bool isSupportedOrSubstitutable() const { return isSupported() || (mtlPixelFormatSubstitute != MTLPixelFormatInvalid); }
|
|
|
|
inline bool vertexIsSupported() const { return (mtlVertexFormat != MTLVertexFormatInvalid); }
|
|
inline bool vertexIsSupportedOrSubstitutable() const { return vertexIsSupported() || (mtlVertexFormatSubstitute != MTLVertexFormatInvalid); }
|
|
} DataFormatDesc;
|
|
|
|
/** Describes the properties of a MTLPixelFormat or MTLVertexFormat. */
|
|
typedef struct MTLFormatDesc {
|
|
union {
|
|
MTLPixelFormat mtlPixelFormat;
|
|
MTLVertexFormat mtlVertexFormat;
|
|
};
|
|
RD::DataFormat dataFormat;
|
|
MTLFmtCaps mtlFmtCaps;
|
|
MTLViewClass mtlViewClass;
|
|
MTLPixelFormat mtlPixelFormatLinear;
|
|
const char *name = nullptr;
|
|
|
|
inline bool isSupported() const { return (mtlPixelFormat != MTLPixelFormatInvalid) && (mtlFmtCaps != kMTLFmtCapsNone); }
|
|
} MTLFormatDesc;
|
|
|
|
class API_AVAILABLE(macos(11.0), ios(14.0)) PixelFormats {
|
|
using DataFormat = RD::DataFormat;
|
|
|
|
public:
|
|
/** Returns whether the DataFormat is supported by the GPU bound to this instance. */
|
|
bool isSupported(DataFormat p_format);
|
|
|
|
/** Returns whether the DataFormat is supported by this implementation, or can be substituted by one that is. */
|
|
bool isSupportedOrSubstitutable(DataFormat p_format);
|
|
|
|
/** Returns whether the specified Metal MTLPixelFormat can be used as a depth format. */
|
|
_FORCE_INLINE_ bool isDepthFormat(MTLPixelFormat p_format) {
|
|
switch (p_format) {
|
|
case MTLPixelFormatDepth32Float:
|
|
case MTLPixelFormatDepth16Unorm:
|
|
case MTLPixelFormatDepth32Float_Stencil8:
|
|
#if TARGET_OS_OSX
|
|
case MTLPixelFormatDepth24Unorm_Stencil8:
|
|
#endif
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/** Returns whether the specified Metal MTLPixelFormat can be used as a stencil format. */
|
|
_FORCE_INLINE_ bool isStencilFormat(MTLPixelFormat p_format) {
|
|
switch (p_format) {
|
|
case MTLPixelFormatStencil8:
|
|
#if TARGET_OS_OSX
|
|
case MTLPixelFormatDepth24Unorm_Stencil8:
|
|
case MTLPixelFormatX24_Stencil8:
|
|
#endif
|
|
case MTLPixelFormatDepth32Float_Stencil8:
|
|
case MTLPixelFormatX32_Stencil8:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/** Returns whether the specified Metal MTLPixelFormat is a PVRTC format. */
|
|
bool isPVRTCFormat(MTLPixelFormat p_format);
|
|
|
|
/** Returns the format type corresponding to the specified Godot pixel format, */
|
|
MTLFormatType getFormatType(DataFormat p_format);
|
|
|
|
/** Returns the format type corresponding to the specified Metal MTLPixelFormat, */
|
|
MTLFormatType getFormatType(MTLPixelFormat p_formt);
|
|
|
|
/**
|
|
* Returns the Metal MTLPixelFormat corresponding to the specified Godot pixel
|
|
* or returns MTLPixelFormatInvalid if no corresponding MTLPixelFormat exists.
|
|
*/
|
|
MTLPixelFormat getMTLPixelFormat(DataFormat p_format);
|
|
|
|
/**
|
|
* Returns the DataFormat corresponding to the specified Metal MTLPixelFormat,
|
|
* or returns DATA_FORMAT_MAX if no corresponding DataFormat exists.
|
|
*/
|
|
DataFormat getDataFormat(MTLPixelFormat p_format);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a texel block of the specified Godot pixel.
|
|
* For uncompressed formats, the returned value corresponds to the size in bytes of a single texel.
|
|
*/
|
|
uint32_t getBytesPerBlock(DataFormat p_format);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a texel block of the specified Metal format.
|
|
* For uncompressed formats, the returned value corresponds to the size in bytes of a single texel.
|
|
*/
|
|
uint32_t getBytesPerBlock(MTLPixelFormat p_format);
|
|
|
|
/** Returns the number of planes of the specified chroma-subsampling (YCbCr) DataFormat */
|
|
uint8_t getChromaSubsamplingPlaneCount(DataFormat p_format);
|
|
|
|
/** Returns the number of bits per channel of the specified chroma-subsampling (YCbCr) DataFormat */
|
|
uint8_t getChromaSubsamplingComponentBits(DataFormat p_format);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a texel of the specified Godot format.
|
|
* The returned value may be fractional for certain compressed formats.
|
|
*/
|
|
float getBytesPerTexel(DataFormat p_format);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a texel of the specified Metal format.
|
|
* The returned value may be fractional for certain compressed formats.
|
|
*/
|
|
float getBytesPerTexel(MTLPixelFormat p_format);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a row of texels of the specified Godot pixel format.
|
|
*
|
|
* For compressed formats, this takes into consideration the compression block size,
|
|
* and p_texels_per_row should specify the width in texels, not blocks. The result is rounded
|
|
* up if p_texels_per_row is not an integer multiple of the compression block width.
|
|
*/
|
|
size_t getBytesPerRow(DataFormat p_format, uint32_t p_texels_per_row);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a row of texels of the specified Metal format.
|
|
*
|
|
* For compressed formats, this takes into consideration the compression block size,
|
|
* and texelsPerRow should specify the width in texels, not blocks. The result is rounded
|
|
* up if texelsPerRow is not an integer multiple of the compression block width.
|
|
*/
|
|
size_t getBytesPerRow(MTLPixelFormat p_format, uint32_t p_texels_per_row);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a texture layer of the specified Godot pixel format.
|
|
*
|
|
* For compressed formats, this takes into consideration the compression block size,
|
|
* and p_texel_rows_per_layer should specify the height in texels, not blocks. The result is
|
|
* rounded up if p_texel_rows_per_layer is not an integer multiple of the compression block height.
|
|
*/
|
|
size_t getBytesPerLayer(DataFormat p_format, size_t p_bytes_per_row, uint32_t p_texel_rows_per_layer);
|
|
|
|
/**
|
|
* Returns the size, in bytes, of a texture layer of the specified Metal format.
|
|
* For compressed formats, this takes into consideration the compression block size,
|
|
* and p_texel_rows_per_layer should specify the height in texels, not blocks. The result is
|
|
* rounded up if p_texel_rows_per_layer is not an integer multiple of the compression block height.
|
|
*/
|
|
size_t getBytesPerLayer(MTLPixelFormat p_format, size_t p_bytes_per_row, uint32_t p_texel_rows_per_layer);
|
|
|
|
/** Returns the Metal format capabilities supported by the specified Godot format, without substitution. */
|
|
MTLFmtCaps getCapabilities(DataFormat p_format, bool p_extended = false);
|
|
|
|
/** Returns the Metal format capabilities supported by the specified Metal format. */
|
|
MTLFmtCaps getCapabilities(MTLPixelFormat p_format, bool p_extended = false);
|
|
|
|
/**
|
|
* Returns the Metal MTLVertexFormat corresponding to the specified
|
|
* DataFormat as used as a vertex attribute format.
|
|
*/
|
|
MTLVertexFormat getMTLVertexFormat(DataFormat p_format);
|
|
|
|
#pragma mark Construction
|
|
|
|
explicit PixelFormats(id<MTLDevice> p_device);
|
|
|
|
protected:
|
|
id<MTLDevice> device;
|
|
|
|
DataFormatDesc &getDataFormatDesc(DataFormat p_format);
|
|
DataFormatDesc &getDataFormatDesc(MTLPixelFormat p_format);
|
|
MTLFormatDesc &getMTLPixelFormatDesc(MTLPixelFormat p_format);
|
|
MTLFormatDesc &getMTLVertexFormatDesc(MTLVertexFormat p_format);
|
|
void initDataFormatCapabilities();
|
|
void initMTLPixelFormatCapabilities();
|
|
void initMTLVertexFormatCapabilities();
|
|
void buildMTLFormatMaps();
|
|
void buildDFFormatMaps();
|
|
void modifyMTLFormatCapabilities();
|
|
void modifyMTLFormatCapabilities(id<MTLDevice> p_device);
|
|
void addMTLPixelFormatCapabilities(id<MTLDevice> p_device,
|
|
MTLFeatureSet p_feature_set,
|
|
MTLPixelFormat p_format,
|
|
MTLFmtCaps p_caps);
|
|
void addMTLPixelFormatCapabilities(id<MTLDevice> p_device,
|
|
MTLGPUFamily p_family,
|
|
MTLPixelFormat p_format,
|
|
MTLFmtCaps p_caps);
|
|
void disableMTLPixelFormatCapabilities(MTLPixelFormat p_format,
|
|
MTLFmtCaps p_caps);
|
|
void disableAllMTLPixelFormatCapabilities(MTLPixelFormat p_format);
|
|
void addMTLVertexFormatCapabilities(id<MTLDevice> p_device,
|
|
MTLFeatureSet p_feature_set,
|
|
MTLVertexFormat p_format,
|
|
MTLFmtCaps p_caps);
|
|
|
|
DataFormatDesc _dataFormatDescriptions[RD::DATA_FORMAT_MAX];
|
|
MTLFormatDesc _mtlPixelFormatDescriptions[_mtlPixelFormatCount];
|
|
MTLFormatDesc _mtlVertexFormatDescriptions[_mtlVertexFormatCount];
|
|
|
|
// Most Metal formats have small values and are mapped by simple lookup array.
|
|
// Outliers are mapped by a map.
|
|
uint16_t _mtlFormatDescIndicesByMTLPixelFormatsCore[_mtlPixelFormatCoreCount];
|
|
HashMap<uint32_t, uint32_t> _mtlFormatDescIndicesByMTLPixelFormatsExt;
|
|
|
|
uint16_t _mtlFormatDescIndicesByMTLVertexFormats[_mtlVertexFormatCount];
|
|
};
|
|
|
|
#pragma clang diagnostic pop
|
|
|
|
#endif // PIXEL_FORMATS_H
|