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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrMtlUtil_DEFINED
#define GrMtlUtil_DEFINED
#import <Metal/Metal.h>
#include "GrTypesPriv.h"
#include "ir/SkSLProgram.h"
class GrMtlGpu;
class GrSurface;
/**
* Returns the Metal texture format for the given GrPixelConfig
*/
bool GrPixelConfigToMTLFormat(GrPixelConfig config, MTLPixelFormat* format);
/**
* Returns the GrPixelConfig for the given Metal texture format
*/
GrPixelConfig GrMTLFormatToPixelConfig(MTLPixelFormat format);
/**
* Returns a id<MTLTexture> to the MTLTexture pointed at by the const void*. Will use
* __bridge_transfer if we are adopting ownership.
*/
id<MTLTexture> GrGetMTLTexture(const void* mtlTexture, GrWrapOwnership);
/**
* Returns a const void* to whatever the id object is pointing to. Always uses __bridge.
*/
const void* GrGetPtrFromId(id idObject);
/**
* Returns a const void* to whatever the id object is pointing to. Always uses __bridge_retained.
*/
const void* GrReleaseId(id idObject);
/**
* Returns a MTLTextureDescriptor which describes the MTLTexture. Useful when creating a duplicate
* MTLTexture without the same storage allocation.
*/
MTLTextureDescriptor* GrGetMTLTextureDescriptor(id<MTLTexture> mtlTexture);
/**
* Returns a compiled MTLLibrary created from MSL code generated by SkSLC
*/
id<MTLLibrary> GrCompileMtlShaderLibrary(const GrMtlGpu* gpu,
const char* shaderString,
SkSL::Program::Kind kind,
const SkSL::Program::Settings& settings,
SkSL::Program::Inputs* outInputs);
/**
* Returns a MTLTexture corresponding to the GrSurface. Optionally can do a resolve.
*/
id<MTLTexture> GrGetMTLTextureFromSurface(GrSurface* surface, bool doResolve);
#endif
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