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.
Support the Maxwell3D Depth RT for Z-buffering, this just creates an equivalent `RenderTarget` object with no support on the API-user side (IE: `Draw` and `ClearBuffers`).
This prefixes all RT functions that deal with color RTs with `Color` and abstracts out common functions that will be used for both color and depth RTs. All common Maxwell3D structures are also moved out of the `ColorRenderTarget` (`RenderTarget` previously) structure.
To allow for caching of pipelines on the host a `VkPipelineCache` has been added, it is entirely in-memory and is not flushed to the disk which'll be done in the future alongside caching guest shaders to further avoid translation where possible.
Uses all Maxwell3D state converted into Vulkan state to do an equivalent draw on the host GPU, it sets up RT/Vertex Buffer/Vertex Attribute/Shader state and creates a stubbed out `VkPipelineLayout` for the draw. Any descriptor state isn't currently handled and is yet to be implemented, currently there's no Vulkan pipeline cache supplied which will be implemented subsequently.
We require a handle to the current renderpass and the index of the subpass in certain cases, this is now tracked by the `CommandExecutor` and passed in as a parameter to `NextSubpassFunctionNode` and the newly-introduced `SubpassFunctionNode`.
Switch from `SubmitWithCycle` to manually allocating the active command buffer to tag dependencies with the `FenceCycle` that prevents them from being mutated prior to execution. This new paradigm could also allow eager recording of commands with only submission being deferred.
`CommandScheduler` API users can now directly allocate an active command buffer that they need to manage alongside its fence, this can allow for more efficient recording as it doesn't need to be immediately submitted after, it can also allow attaching objects to a `FenceCycle` prior to submission that can be useful for locking resources.
Compiles shaders supplied by the guest with caching and automatic invalidation, the size of the shader is also automatically determined by looking for `BRA $` instructions which cause an infloop, it should be noted that we have a maximum shader bytecode size, any shader above this size will not be supported.
Graphics shaders can now be compiled using the shader compiler and emit SPIR-V that can be used on the host. The binding state isn't currently handled alongside constant buffers and textures support in `GraphicsEnvironment` yet.
The operands of the subtraction in the X/Y translation calculation were the wrong way around which led to negative translations that would translate the viewport off the screen.
The default color write mask should mask no channels and write all of them and should be mutated to mask out certain channels as required by the guest.
We cannot statically construct the vertex buffer/attribute arrays for Vulkan due to inactive attributes or buffers which isn't possible on Vulkan, we also cannot just change the count dynamically as there might be disabled buffers or attributes in the middle. We just have a `static_array` which should dynamically be filled in with buffer binding/attribute Vulkan structures before submission.
Buffers generally don't have formats that are fundamentally associated with them unless they're texel buffers, if that is the case it can be manually set in `BufferView`.
The Buffer Manager handles mapping of guest buffers to host buffer views with automatic handling of sub-buffers and eventually supporting recreation of overlapping buffers to create a single larger buffer.
Implements infrastructure for using guest buffers on the host for rendering, a `BufferManager` is still missing which'd handle mapping from guest buffers to host buffers and will be subsequently committed. It should be noted that `BufferView` is also disconnected from `Buffer` and shared for every instance with the same properties like `TextureView` is now.
We want `TextureView`(s) to be disconnected from the backing on the host and instead represent a specific texture on the guest with a backing that can change depending on mapping of new textures which'd invalidate the backing but should now be automatically repointed to an appropriate new backing. This approach also requires locking of the backing to function as it is mutable till it has been locked or the backing has an attached `FenceCycle` that hasn't been signaled which will be added for `CommandExecutor` in a subsequent commit.
Introduces the `supportsShaderViewportIndexLayer` quirk and sets `Shader::Profile::support_int64_atomics` depending on if the `supportsAtomicInt64` quirk is available.
Introduces the `floatControls`, `supportsSubgroupVote` and `subgroupSize` quirks for the shader compiler which are based on Vulkan `PhysicalDevice` properties.
Vulkan has officially deprecated `VK_VERSION_*` macros for versioning as it has introduced the variant into the version. It should however be `0` for the Vulkan APi and doesn't need to be printed.
Introduces several quirks for optional features used by the shader compiler which are now reported in the `Shader::HostTranslateInfo` and `Shader::Profile` structure. There are still property-related quirks for the shader compiler which haven't been implemented in this commit.
A `Buffer` class was created to hold any generic Vulkan buffer object with `span` semantics, `StagingBuffer` was implemented atop it as a wrapper for `Buffer` that inherits from `FenceCycleDependency` and can be used as such.
It was determined that `backing` wasn't a very descriptive name and that it conflicted with the texture's own backing, the name was changed to `texture` to make it more apparent that it was specifically the `Texture` object backing the view.
A memory manager function to read into a vector till it satisfies the supplied function or hits an early stop condition like hitting the end of vector or reaching an unmapped region. This can be used to efficiently scan for values in GPU VA.
When `VK_EXT_vertex_attribute_divisor` is not available, `VkPhysicalDeviceVertexAttributeDivisorFeaturesEXT` is unlinked from the device enabled feature list as it is undefined behavior to link a structure provided by an extension without enabling that extension.
`EXT_SET_V` would enable the extension regardless of if it was actually the correct extension or if the version was high enough as long as the hash matched.
Co-authored-by: Billy Laws <blaws05@gmail.com>
`shaderImageGatherExtended` is required by the shader compiler, to avoid complications associated with making it optional and considering that it's supported by the vast majority of Vulkan mobile devices, it was made a mandatory feature.
This class will be entirely responsible for any interop with the shader compiler, it is also responsible for caching and compilation of shaders in itself.
We want to utilize features from C++ 20 ranges but they haven't been entirely implemented in libc++ so in the meantime we use the reference implementation for it which is Ranges v3.
Any primitive topologies that are directly supported by Vulkan were implemented but the rest were not and will be implemented with conversions as they are used by applications, they are:
* LineLoop
* QuadList
* QuadStrip
* Polygon
Translates all Maxwell3D vertex attributes to Vulkan with the exception of `isConstant` which causes the vertex attribute to return a constant value `(0,0,0,X)` which was trivial in OpenGL with `glDisableVertexAttribArray` and `glVertexAttrib4(..., 0, 0, 0, 1)` but we don't have access to this in Vulkan and might need to depend on undefined behavior or manually emulate it in a shader. This'll be revisited in the future after checking host GPU behavior.
`ENUM_STRING` can be used inside a `class`/`struct`/`union` for `enum`s contained within them. Making the function `static` allows doing this and doesn't require supplying a `this` pointer of the enclosing class for usage.
This being made implicit removes any confusion that all cases would need to be implemented and explicitly define that the CF should continue onto the 2nd switch-case when it cannot find any matches in the first one.
Implements the `isVertexInputRatePerInstance` register array which controls if the vertex input rate is either per-vertex or per-instance. This works in conjunction with the vertex attribute divisor for per-instance attribute repetition of attributes.
We order all registers in ascending order, a few registers namely `colorLogicOp`, `colorWriteMask`, `clearBuffers` and `depthBiasClamp` were erroneously not following this order which has now been fixed.
We inconsistently utilized `typeof` and `decltype` all over the codebase, this has now been fixed by uniformly using `decltype` as `typeof` is a GCC extension and not in the C++ standard alongside having the hidden side effect of removing references from the determined type.
