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Implement CPU BCn Texture Decoding

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Certain GPU vendors such as ARM's Mali do not have support for BCn textures whatsoever while other vendors such as AMD only have partial support (BC1-BC3). Most titles on the guest utilize BC textures and to address this on host GPUs without support for BCn, we need to decompress the texture on the CPU. This commit implements a CPU BCn texture decoder based off Swiftshader's BC decoder, it also adds the necessary infrastructure to have different formats for the `GuestTexture` and `Texture` objects.
This commit is contained in:
PixelyIon
2022-05-28 20:26:24 +05:30
parent fe615b1e03
commit 80c8fb8791
11 changed files with 1855 additions and 73 deletions
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4
app/src/main/cpp/skyline/gpu/trait_manager.h
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@ -40,6 +40,8 @@ namespace skyline::gpu {
bool supportsSubgroupVote{}; //!< If subgroup votes are supported in shaders with SPV_KHR_subgroup_vote
u32 subgroupSize{}; //!< Size of a subgroup on the host GPU
std::bitset<7> bcnSupport{}; //!< Bitmask of BCn texture formats supported, it is ordered as BC1, BC2, BC3, BC4, BC5, BC6H and BC7
/**
* @brief Manages a list of any vendor/device-specific errata in the host GPU
*/
@ -85,7 +87,7 @@ namespace skyline::gpu {
vk::PhysicalDevicePrimitiveTopologyListRestartFeaturesEXT,
vk::PhysicalDeviceImagelessFramebufferFeatures>;
TraitManager(const DeviceFeatures2 &deviceFeatures2, DeviceFeatures2 &enabledFeatures2, const std::vector<vk::ExtensionProperties> &deviceExtensions, std::vector<std::array<char, VK_MAX_EXTENSION_NAME_SIZE>> &enabledExtensions, const DeviceProperties2 &deviceProperties2);
TraitManager(const DeviceFeatures2 &deviceFeatures2, DeviceFeatures2 &enabledFeatures2, const std::vector<vk::ExtensionProperties> &deviceExtensions, std::vector<std::array<char, VK_MAX_EXTENSION_NAME_SIZE>> &enabledExtensions, const DeviceProperties2 &deviceProperties2, const vk::raii::PhysicalDevice& physicalDevice);
/**
* @brief Applies driver specific binary patches to the driver (e.g. BCeNabler)