warrenm

import Foundation
import SceneKit

class ARQLThumbnailGenerator {
    private let device = MTLCreateSystemDefaultDevice()!

    /// Create a thumbnail image of the asset with the specified URL at the specified
    /// animation time. Supports loading of .scn, .usd, .usdz, .obj, and .abc files,
    /// and other formats supported by ModelIO.

warrenm

#include <metal_stdlib>
using namespace metal;

struct VertexIn {
    float2 position [[attribute(0)]]; // varies per-vertex
    float4 color    [[attribute(1)]]; // varies per-instance
    float3 center   [[attribute(2)]]; // varies per-instance
    float  radius   [[attribute(3)]]; // varies per-instance
};

warrenm

//
// Copyright 2018 Warren Moore
//
// 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:
//

warrenm

////////////////////////////////////////////////
// CommonProfile Shader v2

#import <metal_stdlib>

using namespace metal;

#ifndef __SCNMetalDefines__
#define __SCNMetalDefines__

warrenm

MBE_INLINE simd_float3 MBE_OVERLOAD project(simd_float3 object, simd_float4x4 model, simd_float4x4 projection, int *viewport);
MBE_INLINE simd_float3 MBE_OVERLOAD unproject(simd_float3 window, simd_float4x4 model, simd_float4x4 projection, int *viewport, bool *success);

MBE_INLINE float MBE_OVERLOAD distance(simd_float2, simd_float2);
MBE_INLINE simd_float2 MBE_OVERLOAD lerp(simd_float2, simd_float2, float);
MBE_INLINE simd_float2 MBE_OVERLOAD project(simd_float2, simd_float2);

MBE_INLINE float MBE_OVERLOAD distance(simd_float3, simd_float3);
MBE_INLINE simd_float3 MBE_OVERLOAD lerp(simd_float3, simd_float3, float);
MBE_INLINE simd_float3 MBE_OVERLOAD project(simd_float3, simd_float3);

warrenm

NSUInteger width = 1024;
NSUInteger height = 768;
OSType pixelFormat = kCVPixelFormatType_422YpCbCr8BiPlanarFullRange;
NSUInteger plane0BytesPerPixel = 1;
NSUInteger plane1BytesPerPixel = 1;

NSUInteger plane0BytesPerRow = IOSurfaceAlignProperty(kIOSurfaceBytesPerRow, plane0BytesPerPixel * width);
NSUInteger plane0AllocSize = IOSurfaceAlignProperty(kIOSurfaceAllocSize, plane0BytesPerRow * height);
NSUInteger plane1BytesPerRow = IOSurfaceAlignProperty(kIOSurfaceBytesPerRow, plane1BytesPerPixel * width);
NSUInteger plane1AllocSize = IOSurfaceAlignProperty(kIOSurfaceAllocSize, plane1BytesPerRow * height);

warrenm

#import <UIKit/UIKit.h>
#import <QuartzCore/CAMetalLayer.h>
#import <Metal/Metal.h>

@class MetalView;

@protocol MetalViewDelegate
- (void)drawInView:(MetalView *)view;
@end