Color RTs are disabled by setting their format as `None`, it was removed while transitioning to macros and resulted in a missing format exception. It has been readded as several applications depend on this behavior.
Using `std::vector` for shader bytecode led to a lot of reallocation due to constant resizing, switching over the static vector allows for a single static allocation of the maximum possible guest shader size (1 MiB) to be done for every stage resulting in a 6 MiB preallocation which is unnoticeable given the total memory overhead of running a Switch application.
The `OneMinusSourceAlpha` blending factor was converted to `eOneMinusSrcColor` rather than `eOneMinusSrcAlpha` leading to incorrect blending behavior in certain titles. A similar issue with the order of `MinimumGL`/`MaximumGL` and `SubtractGL`/`ReverseSubtractGL` being the opposite of what it should've been, both of these issues have been fixed.
`NextSubpassNode` didn't increment `subpassIndex` which runs commands with the wrong subpass index resulting in them accessing invalid attachments or other bugs that may arise from using the wrong subpass.
All Maxwell3D state was passed by reference to the draw command lambda, this would break if there was more than one pass or the state was changed in any way before execution. All state has now been serialized by value into the draw command lambda capture, retaining state regardless of mutations of the class state.
Any usage of a resource in a command now requires attaching that resource externally and will not be implicitly attached on usage, this makes attaching of resources consistent and allows for more lax locking requirements on resources as they can be locked while attaching and don't need to be for any commands, it also avoids redundantly attaching a resource in certain cases.
If an object is attached to a `FenceCycle` twice then it would cause `FenceCycleDependency::next` to be overwritten and lead to destruction of dependencies prior to the fence being signaled causing usage of deleted resources. This commit fixes this by tracking what fence cycle a dependency is currently attached to and doesn't reattach if it's already attached to the current fence cycle.
An assumption was hardcoded into `Shader::Profile` regarding devices supporting demotion of shader invocations to helpers. This assumption wasn't backed by enabling the `VK_EXT_shader_demote_to_helper_invocation` extension via a quirk leading to assertions when it was used by the shader compiler, a quirk has now been added for the extension and is supplied to the shader compiler accordingly.
Fixes texture corruption due to incorrect synchronization, the barrier would not enforce waiting till the texture was entirely rendered causing an incomplete texture to be downloaded which lead to rendering bugs for certain GPUs including ARM's Mali GPUs.
A bug caused an assertion if both `VK_EXT_custom_border_color` and `VK_EXT_vertex_attribute_divisor` due to mistakenly unlinking `PhysicalDeviceVertexAttributeDivisorFeaturesEXT` instead of `PhysicalDeviceCustomBorderColorFeaturesEXT` when `VK_EXT_custom_border_color` isn't supported which would potentially lead to unlinking the same structure twice and cause the assertion.
Implements inline constant buffer updates that are written to the CPU copy of the buffer rather than generating an actual inline buffer write, this works for TIC/TSC index updates but won't work when the buffer is expected to actually be updated inline with regard to sequence rather than just as a buffer upload prior to rendering.
GPU-sided constant buffer updates will be implemented later with optimizations for updating an entire range by handling GPFIFO `Inc`/`NonInc`directly and submitting it as a host inline buffer update.
There should only ever be a single instance of a `ActiveDescriptorSet` that tracks the lifetime of a descriptor set as the destructor is responsible for freeing the descriptor set.
There are cases where a new object inheriting the descriptor set needs to be created in these cases we need to have move semantics and make the destructor of the prior object inert, this allows for moving to the new object without any side effects. If the copy constructor was used in these cases the older object would free the set on its destruction which would lead to the set being invalid on existing instances which is incorrect behavior and would likely lead to driver crashes.
The descriptor sets should now contain a combined image and sampler handle for any sampled textures in the guest shader from the supplied offset into the texture constant buffer.
Note: Games tend to rely on inline constant buffer updates for writing the texture constant buffer and due to it not being implemented, the value will be read as 0 which is incorrect.
We want read semantics inside the constant buffer object via the mappings to avoid a pointless GPU VMM mapping lookup. It is a fairly frequent operation so this is necessary, the ability to write directly will be added in the future as well.
Implements parsing for the Maxwell 3D TIC pool and conversion of a TIC into a `GuestTexture`, support is limited to pitch-linear RGB565/A8R8G8B8 textures at the moment but will be extended as games utilize more formats and layouts. Support for 1D buffers is also omitted at the moment since they need special handling with them effectively being treated as buffers in Vulkan rather than images.
The pitch of the texture should always be supplied in terms of bytes as it denotes alignment on a byte boundary rather than a pixel one, it is also always utilized in terms of bytes rather than pixels so this avoids an unnecessary conversion.
Note: GBP stride unit was assumed to be pixels earlier but is likely bytes which is why there are no changes to the supplied value there, if this is not the case it'll be fixed in the future
Maxwell3D `TextureSamplerControl` (TSC) are fully converted into Vulkan samplers with extension backing for all aspects that require them (border color/reduction mode) and approximations where Vulkan doesn't support certain functionality (sampler address mode) alongside cases where extensions may not be present (border color).
Code involving caching of mappings was copied from `RenderTarget` without much consideration for applicability in buffers, the reason for caching mappings in RTs was that the view may be invalidated by more than the IOVA/Size being changed but this doesn't hold true for buffers generally so invalidation can only be on the view level with the mappings being looked up every time since the invalidation would likely change them.
`std::hash` doesn't have a generic template where it can be utilized for arbitrary trivial objects and implementing this might result in conflicts with other types. To fix this a generic templated hash is now provided as a utility structure, that can be utilized directly in hash-based containers such as `unordered_map`.
Nullability allow for optional semantics where a span may be explicitly invalidated with `nullptr` being used as a sentinel value for it and a boolean operator that allows trivial checking for if the span is valid or not.
Adds support for index buffers including U8 index buffers via the `VK_EXT_index_type_uint8` extension which has been added as an optional quirk but an exception will be thrown if the guest utilizes it but the host doesn't support it.
Add support for parsing and combining `VertexA` and `VertexB` programs into a single vertex pipeline program prior to compilation, atomic reparsing and combining is supported to only reparse the stage that was modified and recombine once at most within a single pipeline compilation.
Atomically invalidate pipeline stages as runtime information that pertains to them changes rather than never recompiling pipelines on runtime information being updated resulting in out of date pipelines or recompiling all pipelines on any runtime information updates.
Shader compilation is now broken into shader program parsing and pipeline shader compilation which will allow for supporting dual vertex shaders and more atomic invalidation depending on runtime state limiting the amount of work that is redone.
Bindings are now properly handled allowing for bound UBOs to be converted to the appropriate host UBO as designated by the shader compiler by creating Vulkan Descriptor Sets that match it.
We need this to make the distinction between a shader and pipeline stage in as shader programs are bound at a different rate than that of pipeline stage resources such as UBO.
An instance of `Shader::Backend::Bindings` must be retained across all stages for correct emission of bindings, which is now done inside `GraphicsContext::GetShaderStages`.
The vertex attribute types supplied prior were just the default which is `Float`, this works for some cases but will entirely break if the attribute type isn't a float. The attribute types are now set correctly.
Only copying a single aspect was supported by `CopyIntoStagingBuffer` earlier due to not supplying a `VkBufferImageCopy` for each aspect separately, this has now been done with Color/Depth/Stencil aspects having their own `VkBufferImageCopy` for the `VkCmdCopyImageToBuffer` command.
The definition of the `TextureView` class was spread across `texture.cpp` and has now been moved to the top of the file above the other half of the definition.
A buffer with 0 as the start/end IOVA should be invalid as there shouldn't be any mappings at 0 in GPU VA, titles such as Puyo Puyo Tetris configure the Vertex Buffer with 0 IOVAs which leads to a segmentation fault without this exception.
The lifetime of a texture and buffer view is now bound by the `FenceCycle` in `CommandExecutor`, this ensures that a `VkImageView` isn't destroyed prior to usage leading to UB.
The lifetime of all textures bound to a RenderPass alongside syncing of textures is already handled by `CommandExecutor` and doesn't need to be redundantly handled by `RenderPassNode`. It's been removed as a result of this.
Adds the depth/stencil RT as an attachment for the draw but with `VkPipelineDepthStencilStateCreateInfo` stubbed out, it'll not function correctly and the contents will not be what the guest expects them to be.
Support for clearing the depth/stencil RT has been added as its own function via either optimized `VkAttachmentLoadOp`-based clears or `vkCmdClearAttachments`. A bit of cleanup has also been done for color RT clears with the lambda for the slow-path purely calling the command rather than creating the parameter structures.
Implements `AddClearDepthStencilSubpass` in `CommandExecutor` which is similar to `ClearColorAttachment` in that it uses `VK_ATTACHMENT_LOAD_OP_CLEAR` for the clear which is far more efficient than using `VK_ATTACHMENT_LOAD_OP_LOAD` then doing the clear.
The stage/access mask for `VkSubpassDependency` were hardcoded to only be valid for color attachments earlier, this has now been fixed by branching based on the format aspect.
Sets `VkImageUsageFlags` correctly rather than hardcoding it for color attachments and adds multiple `VkBufferImageCopy` to `VkCmdCopyBufferToImage` for Color/Depth/Stencil aspects of an image.
