RendererCommon.h

Go to the documentation of this file.

//
// RendererCommon.h
// MetalRenderer
//
// Created by Stuart Carnie on 6/3/18.
// Copyright © 2018 Stuart Carnie. All rights reserved.
//

#ifndef RendererCommon_h
#define RendererCommon_h

#import <Foundation/Foundation.h>
#import "ShaderTypes.h"

// TODO(sgc): implement triple buffering
#define MAX_INFLIGHT 1
#define CHAIN_LENGTH 3

/* macOS requires constants in a buffer to have a 256 byte alignment. */
#ifdef TARGET_OS_MAC
#define kMetalBufferAlignment 256
#else
#define kMetalBufferAlignment 4
#endif

#define MTL_ALIGN_BUFFER(size) ((size + kMetalBufferAlignment - 1) & (~(kMetalBufferAlignment - 1)))

#pragma mark - Pixel Formats

typedef NS_ENUM(NSUInteger, RPixelFormat)
{
 
 RPixelFormatInvalid,
 
 /* 16-bit formats */
 RPixelFormatBGRA4Unorm,
 RPixelFormatB5G6R5Unorm,
 
 RPixelFormatBGRA8Unorm,
 RPixelFormatBGRX8Unorm, // RetroArch XRGB
 
 RPixelFormatCount,
};

extern NSUInteger RPixelFormatToBPP(RPixelFormat format);
extern NSString *NSStringFromRPixelFormat(RPixelFormat format);

typedef NS_ENUM(NSUInteger, RTextureFilter)
{
 RTextureFilterNearest,
 RTextureFilterLinear,
 
 RTextureFilterCount,
};

extern matrix_float4x4 matrix_proj_ortho(float left, float right, float top, float bottom);
extern matrix_float4x4 matrix_rotate_z(float rot);
extern matrix_float4x4 make_matrix_float4x4(const float *v);

#endif /* RendererCommon_h */