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Removes need for function pointers.

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This commit is contained in:
Cody Goodson 2021-04-16 17:47:51 -05:00 committed by Charles Giessen
parent 73e2b82dce
commit 075be4900b
2 changed files with 70 additions and 104 deletions
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17
src/VkBootstrap.cpp
View File

@ -1010,17 +1010,14 @@ PhysicalDeviceSelector::PhysicalDeviceDesc PhysicalDeviceSelector::populate_devi
detail::ExtensionFeatures* prev = nullptr;
for(auto& extension : desc.extension_features) {
if(prev != nullptr) {
prev->structure->pNext = extension.structure;
prev->structure.header->pNext = extension.structure.header;
}
prev = &extension;
}
if(desc.extension_features.size() > 0) {
desc.device_features2.pNext = desc.extension_features[0].structure;
desc.device_features2.pNext = desc.extension_features.front().structure.header;
}
detail::vulkan_functions().fp_vkGetPhysicalDeviceFeatures2(phys_device, &desc.device_features2);
for(auto& extension : desc.extension_features) {
extension.update();
}
}
#endif
return desc;
@ -1407,20 +1404,20 @@ detail::Result<Device> DeviceBuilder::build() const {
// Setup the pNexts of all the extension features
std::vector<detail::ExtensionFeatures> match = physical_device.extension_features;
VkPhysicalDeviceFeatures2 local_features2{};
VkBaseOutStructure* tail = nullptr;
//VkBaseOutStructure* tail = nullptr;
if (physical_device.instance_version >= VK_MAKE_VERSION(1, 1, 0) &&
match.size() > 0) {
detail::ExtensionFeatures* prev = nullptr;
for(auto& extension : match) {
if(prev != nullptr) {
prev->structure->pNext = extension.structure;
prev->structure.header->pNext = extension.structure.header;
}
prev = &extension;
tail = prev->structure;
//tail = prev->structure;
}
local_features2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
local_features2.features = physical_device.features;
local_features2.pNext = match.front().structure;
local_features2.pNext = match.front().structure.header;
has_phys_dev_features_2 = true;
}
#endif
@ -1440,7 +1437,7 @@ detail::Result<Device> DeviceBuilder::build() const {
if (has_phys_dev_features_2) {
device_create_info.pNext = &local_features2;
if(info.pNext_chain.size() > 0) {
match.back().structure->pNext = info.pNext_chain.front();
match.back().structure.header->pNext = info.pNext_chain.front();
}
} else {
device_create_info.pEnabledFeatures = &physical_device.features;

157
src/VkBootstrap.h
View File

@ -117,38 +117,73 @@ template <typename T> class Result {
struct ExtensionFeatures {
using DeleteProc = void(*)(ExtensionFeatures&);
using UpdateProc = void(*)(ExtensionFeatures&);
using CopyProc = void(*)(const ExtensionFeatures&, ExtensionFeatures&);
struct StructureContainer {
struct Header {
VkStructureType sType;
void* pNext;
};
StructureContainer() = default;
StructureContainer (StructureContainer const& other) { copy(other); }
StructureContainer (StructureContainer&& other) { copy(other); }
StructureContainer& operator=(StructureContainer const& other) { copy(other); return *this; }
StructureContainer& operator=(StructureContainer&& other) { copy(other); return *this; }
template <typename T>
void set(T const& features) {
data.resize(sizeof(T));
*reinterpret_cast<T*>(data.data()) = features;
count = (sizeof(T) - sizeof(Header)) / sizeof(VkBool32);
header = reinterpret_cast<Header*>(data.data());
fields = reinterpret_cast<VkBool32*>(data.data() + sizeof(Header));
}
bool match(StructureContainer const& other) const {
if(!header || !other.header || header->sType != other.header->sType) { return false; }
for(auto i = 0; i < count; ++i) {
if(fields[i] == VK_TRUE && other.fields[i] == VK_FALSE) {
return false;
}
}
return true;
}
Header* header = nullptr;
private:
// Just to avoid having it copied in 4 places
void copy(StructureContainer const& other) {
data = other.data;
count = other.count;
header = reinterpret_cast<Header*>(data.data());
fields = reinterpret_cast<VkBool32*>(data.data() + sizeof(Header));
}
std::vector<char> data;
VkBool32* fields = nullptr;
void* extend = nullptr; // Future proofing
int count = 0;
};
ExtensionFeatures() = default;
ExtensionFeatures (const ExtensionFeatures& other) : delete_proc(other.delete_proc),
update_proc(other.update_proc),
copy_proc(other.copy_proc) {
if(copy_proc) { copy_proc(other, *this); }
}
ExtensionFeatures (ExtensionFeatures const& other) : structure(other.structure) {}
ExtensionFeatures (ExtensionFeatures&& other) : delete_proc(std::exchange(other.delete_proc, nullptr)),
update_proc(std::exchange(other.update_proc, nullptr)),
copy_proc(std::exchange(other.copy_proc, nullptr)),
structure(std::exchange(other.structure, nullptr)),
fields(std::exchange(other.fields, {})) {}
ExtensionFeatures (ExtensionFeatures&& other) : structure(std::exchange(other.structure, {})) {}
ExtensionFeatures& operator=(const ExtensionFeatures& other) {
delete_proc = other.delete_proc;
update_proc = other.update_proc;
copy_proc = other.copy_proc;
if(copy_proc) { copy_proc(other, *this); }
ExtensionFeatures& operator=(ExtensionFeatures const& other) {
structure = other.structure;
return *this;
}
ExtensionFeatures& operator=(ExtensionFeatures&& other) {
delete_proc = std::exchange(other.delete_proc, nullptr);
update_proc = std::exchange(other.update_proc, nullptr);
copy_proc = std::exchange(other.copy_proc, nullptr);
structure = std::exchange(other.structure, nullptr);
fields = std::exchange(other.fields, {});
structure = std::exchange(other.structure, {});
return *this;
}
@ -156,81 +191,15 @@ struct ExtensionFeatures {
static ExtensionFeatures make(T src) {
ExtensionFeatures extension_features;
T* new_features_structure = new T;
*new_features_structure = src;
extension_features.structure = reinterpret_cast<VkBaseOutStructure*>(new_features_structure);
extension_features.delete_proc = [](ExtensionFeatures& features) {
features.fields = {};
if(features.structure) {
auto casted = reinterpret_cast<T *>(features.structure);
delete casted;
}
};
extension_features.update_proc = [](ExtensionFeatures& features) {
auto structure_field_count = (sizeof(T) - (sizeof(void*) * 2)) / sizeof(VkBool32);
features.fields.resize(structure_field_count);
memcpy(features.fields.data(),
reinterpret_cast<unsigned char*>(features.structure) + (sizeof(void*) * 2),
sizeof(VkBool32) * features.fields.size());
};
extension_features.copy_proc = [](const ExtensionFeatures& src, ExtensionFeatures& dst) {
if(dst.structure) {
auto casted = reinterpret_cast<T*>(dst.structure);
delete casted;
}
T* new_features_structure = new T;
*new_features_structure = *reinterpret_cast<T*>(src.structure);
dst.structure = reinterpret_cast<VkBaseOutStructure*>(new_features_structure);
dst.fields = src.fields;
};
extension_features.update();
extension_features.structure.set<T>(src);
return extension_features;
}
void update() {
if(update_proc) {
update_proc(*this);
}
}
bool match(const ExtensionFeatures& other) const {
if(!structure || !other.structure || structure->sType != other.structure->sType) { return false; }
for(auto i = 0; i < fields.size(); ++i) {
if(fields[i] == VK_TRUE && other.fields[i] == VK_FALSE) {
return false;
}
}
return true;
}
~ExtensionFeatures() {
if(delete_proc) { delete_proc(*this); }
}
VkBaseOutStructure* structure = nullptr;
std::vector<VkBool32> fields;
private:
DeleteProc delete_proc = nullptr;
UpdateProc update_proc = nullptr;
CopyProc copy_proc = nullptr;
bool match(const ExtensionFeatures& other) const { return structure.match(other.structure); }
StructureContainer structure;
};
} // namespace detail