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| 1 /* |
| 2 * Copyright 2016 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef GrVkExtensions_DEFINED |
| 9 #define GrVkExtensions_DEFINED |
| 10 |
| 11 #include "../../private/SkTArray.h" |
| 12 #include "SkString.h" |
| 13 #include "vulkan/vulkan.h" |
| 14 |
| 15 /** |
| 16 * This helper queries the current Vulkan context for its extensions and layers,
remembers them, |
| 17 * and can be queried. It supports queries for both instance and device extensio
ns and layers. |
| 18 */ |
| 19 class SK_API GrVkExtensions { |
| 20 public: |
| 21 GrVkExtensions() : fInitialized(false) |
| 22 , fInstanceExtensionStrings(new SkTArray<SkString>) |
| 23 , fDeviceExtensionStrings(new SkTArray<SkString>) |
| 24 , fInstanceLayerStrings(new SkTArray<SkString>) |
| 25 , fDeviceLayerStrings(new SkTArray<SkString>) {} |
| 26 |
| 27 GrVkExtensions(const GrVkExtensions&); |
| 28 |
| 29 GrVkExtensions& operator=(const GrVkExtensions&); |
| 30 |
| 31 void swap(GrVkExtensions* that) { |
| 32 fInstanceExtensionStrings.swap(that->fInstanceExtensionStrings); |
| 33 fDeviceExtensionStrings.swap(that->fDeviceExtensionStrings); |
| 34 fInstanceLayerStrings.swap(that->fInstanceLayerStrings); |
| 35 fDeviceLayerStrings.swap(that->fDeviceLayerStrings); |
| 36 |
| 37 SkTSwap(fInitialized, that->fInitialized); |
| 38 } |
| 39 |
| 40 /** |
| 41 * We sometimes need to use this class without having yet created a GrVkInte
rface. |
| 42 */ |
| 43 bool init(uint32_t specVersion, |
| 44 PFN_vkEnumerateInstanceExtensionProperties enumerateInstanceExtens
ionProperties, |
| 45 PFN_vkEnumerateDeviceExtensionProperties enumerateDeviceExtensionP
roperties, |
| 46 PFN_vkEnumerateInstanceLayerProperties enumerateInstanceLayerPrope
rties, |
| 47 PFN_vkEnumerateDeviceLayerProperties enumerateDeviceLayerPropertie
s); |
| 48 |
| 49 bool isInitialized() const { return fInitialized; } |
| 50 |
| 51 /** |
| 52 * Queries whether an extension or layer is present. Will fail if init() has
not been called. |
| 53 */ |
| 54 bool hasInstanceExtension(const char[]) const; |
| 55 bool hasDeviceExtension(const char[]) const; |
| 56 bool hasInstanceLayer(const char[]) const; |
| 57 bool hasDeviceLayer(const char[]) const; |
| 58 |
| 59 /** |
| 60 * Removes an extension or layer if present. Returns true if it was present
before the call. |
| 61 */ |
| 62 bool removeInstanceExtension(const char[]); |
| 63 bool removeDeviceExtension(const char[]); |
| 64 bool removeInstanceLayer(const char[]); |
| 65 bool removeDeviceLayer(const char[]); |
| 66 |
| 67 /** |
| 68 * Adds an extension or layer to list |
| 69 */ |
| 70 void addInstanceExtension(const char[]); |
| 71 void addDeviceExtension(const char[]); |
| 72 void addInstanceLayer(const char[]); |
| 73 void addDeviceLayer(const char[]); |
| 74 |
| 75 void reset() { |
| 76 fInstanceExtensionStrings->reset(); |
| 77 fDeviceExtensionStrings->reset(); |
| 78 fInstanceLayerStrings->reset(); |
| 79 fDeviceLayerStrings->reset(); |
| 80 } |
| 81 |
| 82 void print(const char* sep = "\n") const; |
| 83 |
| 84 private: |
| 85 bool fInitialized; |
| 86 SkAutoTDelete<SkTArray<SkString> > fInstanceExtensionStrings; |
| 87 SkAutoTDelete<SkTArray<SkString> > fDeviceExtensionStrings; |
| 88 SkAutoTDelete<SkTArray<SkString> > fInstanceLayerStrings; |
| 89 SkAutoTDelete<SkTArray<SkString> > fDeviceLayerStrings; |
| 90 }; |
| 91 |
| 92 #endif |
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