/*
 * Copyright 2021 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef GrMtlTypesPriv_DEFINED
#define GrMtlTypesPriv_DEFINED

#include "include/gpu/GrTypes.h"
#include "include/gpu/mtl/GrMtlTypes.h"

///////////////////////////////////////////////////////////////////////////////

#ifdef __APPLE__

#include <TargetConditionals.h>

#if defined(SK_BUILD_FOR_MAC)
#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 110000
#define GR_METAL_SDK_VERSION 230
#elif __MAC_OS_X_VERSION_MAX_ALLOWED >= 101500
#define GR_METAL_SDK_VERSION 220
#elif __MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
#define GR_METAL_SDK_VERSION 210
#else
#error Must use at least 10.14 SDK to build Metal backend for MacOS
#endif
#else
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000 || __TV_OS_VERSION_MAX_ALLOWED >= 140000
#define GR_METAL_SDK_VERSION 230
#elif __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000 || __TV_OS_VERSION_MAX_ALLOWED >= 130000
#define GR_METAL_SDK_VERSION 220
#elif __IPHONE_OS_VERSION_MAX_ALLOWED >= 120000 || __TV_OS_VERSION_MAX_ALLOWED >= 120000
#define GR_METAL_SDK_VERSION 210
#else
#error Must use at least 12.00 SDK to build Metal backend for iOS
#endif
#endif

#if __has_feature(objc_arc) && __has_attribute(objc_externally_retained)
#define GR_NORETAIN __attribute__((objc_externally_retained))
#define GR_NORETAIN_BEGIN \
    _Pragma("clang attribute push (__attribute__((objc_externally_retained)), apply_to=any(function,objc_method))")
#define GR_NORETAIN_END _Pragma("clang attribute pop")
#else
#define GR_NORETAIN
#define GR_NORETAIN_BEGIN
#define GR_NORETAIN_END
#endif

struct GrMtlTextureSpec {
    GrMtlTextureSpec()
            : fFormat(0)
            , fUsage(0)
            , fStorageMode(0) {}
    GrMtlTextureSpec(const GrMtlSurfaceInfo& info)
            : fFormat(info.fFormat)
            , fUsage(info.fUsage)
            , fStorageMode(info.fStorageMode) {}

    GrMTLPixelFormat fFormat;
    GrMTLTextureUsage fUsage;
    GrMTLStorageMode fStorageMode;
};

GrMtlSurfaceInfo GrMtlTextureSpecToSurfaceInfo(const GrMtlTextureSpec& mtlSpec,
                                               uint32_t sampleCount,
                                               uint32_t levelCount,
                                               GrProtected isProtected);

#endif  // __APPLE__

#endif  // GrMtlTypesPriv_DEFINED