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/**************************************************************************/
/* metal_device_properties.h */
/**************************************************************************/
/* This file is part of: */
/* REDOT ENGINE */
/* https://redotengine.org */
/**************************************************************************/
/* Copyright (c) 2024-present Redot Engine contributors */
/* (see REDOT_AUTHORS.md) */
/* 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 METAL_DEVICE_PROPERTIES_H
#define METAL_DEVICE_PROPERTIES_H
#import "servers/rendering/rendering_device.h"
#import <Foundation/Foundation.h>
#import <Metal/Metal.h>
/** The buffer index to use for vertex content. */
const static uint32_t VERT_CONTENT_BUFFER_INDEX = 0;
const static uint32_t MAX_COLOR_ATTACHMENT_COUNT = 8;
typedef NS_OPTIONS(NSUInteger, SampleCount) {
SampleCount1 = (1UL << 0),
SampleCount2 = (1UL << 1),
SampleCount4 = (1UL << 2),
SampleCount8 = (1UL << 3),
SampleCount16 = (1UL << 4),
SampleCount32 = (1UL << 5),
SampleCount64 = (1UL << 6),
};
struct API_AVAILABLE(macos(11.0), ios(14.0)) MetalFeatures {
uint32_t mslVersion;
MTLGPUFamily highestFamily;
MTLLanguageVersion mslVersionEnum;
SampleCount supportedSampleCounts;
long hostMemoryPageSize;
bool layeredRendering;
bool multisampleLayeredRendering;
bool quadPermute; /**< If true, quadgroup permutation functions (vote, ballot, shuffle) are supported in shaders. */
bool simdPermute; /**< If true, SIMD-group permutation functions (vote, ballot, shuffle) are supported in shaders. */
bool simdReduction; /**< If true, SIMD-group reduction functions (arithmetic) are supported in shaders. */
bool tessellationShader; /**< If true, tessellation shaders are supported. */
bool imageCubeArray; /**< If true, image cube arrays are supported. */
};
struct MetalLimits {
uint64_t maxImageArrayLayers;
uint64_t maxFramebufferHeight;
uint64_t maxFramebufferWidth;
uint64_t maxImageDimension1D;
uint64_t maxImageDimension2D;
uint64_t maxImageDimension3D;
uint64_t maxImageDimensionCube;
uint64_t maxViewportDimensionX;
uint64_t maxViewportDimensionY;
MTLSize maxThreadsPerThreadGroup;
MTLSize maxComputeWorkGroupCount;
uint64_t maxBoundDescriptorSets;
uint64_t maxColorAttachments;
uint64_t maxTexturesPerArgumentBuffer;
uint64_t maxSamplersPerArgumentBuffer;
uint64_t maxBuffersPerArgumentBuffer;
uint64_t maxBufferLength;
uint64_t minUniformBufferOffsetAlignment;
uint64_t maxVertexDescriptorLayoutStride;
uint16_t maxViewports;
uint32_t maxPerStageBufferCount; /**< The total number of per-stage Metal buffers available for shader uniform content and attributes. */
uint32_t maxPerStageTextureCount; /**< The total number of per-stage Metal textures available for shader uniform content. */
uint32_t maxPerStageSamplerCount; /**< The total number of per-stage Metal samplers available for shader uniform content. */
uint32_t maxVertexInputAttributes;
uint32_t maxVertexInputBindings;
uint32_t maxVertexInputBindingStride;
uint32_t maxDrawIndexedIndexValue;
uint32_t minSubgroupSize; /**< The minimum number of threads in a SIMD-group. */
uint32_t maxSubgroupSize; /**< The maximum number of threads in a SIMD-group. */
BitField<RDD::ShaderStage> subgroupSupportedShaderStages;
BitField<RD::SubgroupOperations> subgroupSupportedOperations; /**< The subgroup operations supported by the device. */
};
class API_AVAILABLE(macos(11.0), ios(14.0)) MetalDeviceProperties {
private:
void init_features(id<MTLDevice> p_device);
void init_limits(id<MTLDevice> p_device);
public:
MetalFeatures features;
MetalLimits limits;
SampleCount find_nearest_supported_sample_count(RenderingDevice::TextureSamples p_samples) const;
MetalDeviceProperties(id<MTLDevice> p_device);
~MetalDeviceProperties();
private:
static const SampleCount sample_count[RenderingDevice::TextureSamples::TEXTURE_SAMPLES_MAX];
};
#endif // METAL_DEVICE_PROPERTIES_H
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