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

#ifndef skgpu_MtlUtilsPriv_DEFINED
#define skgpu_MtlUtilsPriv_DEFINED

#import <Metal/Metal.h>

#include "src/gpu/PipelineUtils.h"
#include "src/sksl/codegen/SkSLMetalCodeGenerator.h"

namespace SkSL {

enum class ProgramKind : int8_t;
struct ProgramInterface;
struct ProgramSettings;
struct ShaderCaps;

}  // namespace SkSL

namespace skgpu {

class ShaderErrorHandler;

inline bool SkSLToMSL(const SkSL::ShaderCaps* caps,
                      const std::string& sksl,
                      SkSL::ProgramKind programKind,
                      const SkSL::ProgramSettings& settings,
                      std::string* msl,
                      SkSL::ProgramInterface* outInterface,
                      ShaderErrorHandler* errorHandler) {
    return SkSLToBackend(caps, &SkSL::ToMetal, "MSL",
                         sksl, programKind, settings, msl, outInterface, errorHandler);
}

bool MtlFormatIsDepthOrStencil(MTLPixelFormat);
bool MtlFormatIsDepth(MTLPixelFormat);
bool MtlFormatIsStencil(MTLPixelFormat);
bool MtlFormatIsCompressed(MTLPixelFormat);

uint32_t MtlFormatChannels(MTLPixelFormat);

size_t MtlFormatBytesPerBlock(MTLPixelFormat);

#if defined(SK_DEBUG) || defined(GR_TEST_UTILS)
const char* MtlFormatToString(MTLPixelFormat);
#endif

#ifdef SK_BUILD_FOR_IOS
bool MtlIsAppInBackground();
#endif

}  // namespace skgpu

#endif // skgpu_MtlUtilsPriv_DEFINED
