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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.
*/
#include "GrMtlGpu.h"
#include "GrMtlTexture.h"
#if !__has_feature(objc_arc)
#error This file must be compiled with Arc. Use -fobjc-arc flag
#endif
static bool get_feature_set(id<MTLDevice> device, MTLFeatureSet* featureSet) {
// Mac OSX
#ifdef SK_BUILD_FOR_MAC
if ([device supportsFeatureSet:MTLFeatureSet_OSX_GPUFamily1_v2]) {
*featureSet = MTLFeatureSet_OSX_GPUFamily1_v2;
return true;
}
if ([device supportsFeatureSet:MTLFeatureSet_OSX_GPUFamily1_v1]) {
*featureSet = MTLFeatureSet_OSX_GPUFamily1_v1;
return true;
}
#endif
// iOS Family group 3
#ifdef SK_BUILD_FOR_IOS
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily3_v2]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily3_v2;
return true;
}
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily3_v1]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily3_v1;
return true;
}
// iOS Family group 2
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily2_v3]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily2_v3;
return true;
}
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily2_v2]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily2_v2;
return true;
}
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily2_v1]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily2_v1;
return true;
}
// iOS Family group 1
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily1_v3]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily1_v3;
return true;
}
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily1_v2]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily1_v2;
return true;
}
if ([device supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily1_v1]) {
*featureSet = MTLFeatureSet_iOS_GPUFamily1_v1;
return true;
}
#endif
// No supported feature sets were found
return false;
}
sk_sp<GrGpu> GrMtlGpu::Make(GrContext* context, const GrContextOptions& options,
id<MTLDevice> device, id<MTLCommandQueue> queue) {
if (!device || !queue) {
return nullptr;
}
MTLFeatureSet featureSet;
if (!get_feature_set(device, &featureSet)) {
return nullptr;
}
return sk_sp<GrGpu>(new GrMtlGpu(context, options, device, queue, featureSet));
}
GrMtlGpu::GrMtlGpu(GrContext* context, const GrContextOptions& options,
id<MTLDevice> device, id<MTLCommandQueue> queue, MTLFeatureSet featureSet)
: INHERITED(context)
, fDevice(device)
, fQueue(queue) {
fMtlCaps.reset(new GrMtlCaps(options, fDevice, featureSet));
fCaps = fMtlCaps;
MTLTextureDescriptor* txDesc = [[MTLTextureDescriptor alloc] init];
txDesc.textureType = MTLTextureType3D;
txDesc.height = 64;
txDesc.width = 64;
txDesc.depth = 64;
txDesc.pixelFormat = MTLPixelFormatRGBA8Unorm;
txDesc.arrayLength = 1;
txDesc.mipmapLevelCount = 1;
id<MTLTexture> testTexture = [fDevice newTextureWithDescriptor:txDesc];
// To get ride of unused var warning
int width = [testTexture width];
SkDebugf("width: %d\n", width);
// Unused queue warning fix
SkDebugf("ptr to queue: %p\n", fQueue);
}
sk_sp<GrTexture> GrMtlGpu::onCreateTexture(const GrSurfaceDesc& desc, SkBudgeted budgeted,
const GrMipLevel texels[], int mipLevelCount) {
int mipLevels = !mipLevelCount ? 1 : mipLevelCount;
if (!fMtlCaps->isConfigTexturable(desc.fConfig)) {
return nullptr;
}
bool renderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag);
if (renderTarget) {
// Current we don't have render target support
return nullptr;
}
sk_sp<GrMtlTexture> tex;
if (renderTarget) {
// Enable once we have render target support
#if 0
tex = GrMtlTextureRenderTarget::CreateNewTextureRenderTarget(this, budgeted,
desc, mipLevels);
#endif
} else {
tex = GrMtlTexture::CreateNewTexture(this, budgeted, desc, mipLevels);
}
if (!tex) {
return nullptr;
}
if (mipLevelCount) {
// Perform initial data upload here
}
if (desc.fFlags & kPerformInitialClear_GrSurfaceFlag) {
// Do initial clear of the texture
}
return tex;
}
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