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[Gpu] Backend-neutral shader compiler and guest-GPU renderer seam (#200)
* [ShaderCompiler] Extract the backend-neutral shader compiler project Move the Gen5 (gfx10) microcode decoder, the scalar evaluator, the shader IR, and the metadata reader out of SharpEmu.Libs/Agc into a new SharpEmu.ShaderCompiler project — the half of shader compilation every codegen backend (SPIR-V today; MSL and DXIL later) consumes. Types go public: they are the contract now. Nothing in the project may depend on a host graphics API; the SPIR-V-specific artifact types (Gen5SpirvShader, Gen5SpirvStage) stay beside the emitter in Libs. Three couplings surfaced by the move, each resolved at the right depth: GuestDrawKind was defined inside VulkanVideoPresenter despite being a guest-domain, decoder-produced concept — it moves to the shared project; the evaluator's one HLE dependency (the tracked-libc-heap read fallback) becomes an injectable hook that a Libs module initializer installs before any caller can reach the evaluator; and the inline- constant table is promoted to a shared Gen5InlineConstants so backends cannot drift on constant semantics (the SPIR-V translator now delegates to it). The ShaderDump tool drops its reflection over the moved types in favor of direct typed calls; only the SPIR-V emitter, still internal to Libs until it moves to its own backend project, is reached via reflection. Verified by a clean solution build, the existing test suite, and a full ShaderDump conformance run. * [ShaderCompiler] Move the SPIR-V emitter into SharpEmu.ShaderCompiler.Vulkan Gen5SpirvTranslator (with its ALU partial), SpirvModuleBuilder, SpirvFixedShaders, and the Gen5SpirvShader/Gen5SpirvStage artifact types move whole from SharpEmu.Libs/Agc into the first per-backend codegen project. Notably it needs no Vulkan bindings reference: emitters produce bytes from the shared IR; renderers own graphics APIs. Types go public as the backend's contract; AgcExports and the presenter consume them exactly as before. The ShaderDump tool drops its last reflection: with both halves of the pipeline public it drives decode and all three emit entry points with direct typed calls, retiring the PadWithDefaults invoke shim — and it no longer references SharpEmu.Libs at all, making the conformance tool emulator-independent by design. Verified by a clean solution build, the test suite, a full ShaderDump conformance run, and a locked-mode restore under the pinned SDK. * [Gpu] Extract the guest-GPU backend seam (IGuestGpuBackend) The AGC/VideoOut/SystemService export layers now reach the renderer through IGuestGpuBackend via GuestGpu.Current (mirroring HostPlatform), instead of calling VulkanVideoPresenter statics. The Vulkan backend is a thin adapter over the existing presenter, so the extraction stays mechanical; only the adapter and the presenter itself reference the presenter now. The types crossing the seam move to Gpu/GuestGpuTypes.cs and drop their Vulkan prefixes, which an audit showed were misnomers: every field is a neutral primitive or a raw guest value (guest addresses, format and number-type codes, CB_BLEND register bitfields, verbatim sampler descriptor dwords). The one genuine Vulkan value in the old surface — the Silk.NET Format inside VulkanRenderTargetFormat, which callers never read — stops crossing: TryDecodeRenderTargetFormat is replaced at the seam by TryGetRenderTargetOutputKind, which surfaces only the Gen5PixelOutputKind callers actually consume, keeping native formats a backend-internal concern. ToVulkanSampler in AgcExports is renamed ToGuestSampler to match what it always produced. Seam rules are documented on the interface: no host-API value crosses, and submission stays coarse-grained with synchronization internal to backends. Interim exception, resolved next: shader parameters are still SPIR-V blobs. * [Gpu] Move shader compilation behind the guest-GPU backend The seam's interim exception is gone: AgcExports no longer calls Gen5SpirvTranslator or handles SPIR-V bytes. IGuestGpuBackend gains the three TryCompile entry points, which take the backend-neutral (Gen5ShaderState, Gen5ShaderEvaluation) contract plus the flat per-role resource-slot bases a multi-stage draw needs, and return opaque IGuestCompiledShader handles that only the producing backend can submit — the Vulkan backend wraps its SPIR-V in VulkanCompiledGuestShader and rejects foreign handles loudly. Draw and dispatch submissions take handles instead of byte arrays; the shader caches in AgcExports store handles. IGuestCompiledShader.Payload exposes the backend-defined compiled bytes for exactly two callers: the diagnostics dump and the size trace — documented as never-interpret. The unused _pixelSpirvCache is deleted. With this, a Metal or DX12 backend plugs in by implementing IGuestGpuBackend with its own codegen; nothing in the export layers knows which shader format exists. Verified by a clean solution build, the test suite, and a full ShaderDump conformance run under the pinned SDK. * [Gpu] Fix rename collateral from the seam extraction Address review findings: a doc comment picked up the mechanical VulkanVideoPresenter -> GuestGpu.Current rewrite and ended up naming members that do not exist on the interface, and CreateVulkanIndexBuffer kept its Vulkan prefix while every sibling factory was de-Vulkanized — it produces the neutral GuestIndexBuffer, so it is CreateGuestIndexBuffer. * [Gpu] Label diagnostics dumps with the backend's payload extension Address the review's altitude finding on DumpSpirv: the dump helper's IR-disassembly half is backend-neutral and stays put, but writing the opaque payload to a hardcoded .spv interpreted bytes the seam says never to interpret. IGuestCompiledShader now declares its payload's file extension, and the renamed DumpCompiledShader takes the handle and writes honestly-labeled dumps whichever backend produced them. * [Gpu] Make the shader-cache hit path allocation-free and lock-free Every translated draw built its cache key with a LINQ Select feeding string.Join plus one interpolated string per render target — steady per-draw allocation whether or not the shaders were already cached. The output layout is now packed exactly into a ulong (guest slot in 6 bits + output kind in 2 bits per target, host locations being the byte positions, target count in the key beside it), and the Gen5PixelOutputBinding array is only materialized on a cache miss, where compilation dwarfs it. The graphics/compute shader caches switch from Dictionary guarded by _submitTraceGate to ConcurrentDictionary, making the per-draw and per-dispatch hit paths lock-free and decoupling them from the tracing gate they coincidentally shared. And the seam-shaped render-target list is built once when a translated draw is created instead of a Select/ToArray per submission of a cached draw. * [Gpu] Replace LINQ with explicit loops in code this branch introduced Project rule going forward: no LINQ — it allocates enumerators, closures, and delegates, and this codebase is GC-pause-sensitive. The pixel-output and guest-render-target array builds and the ShaderDump store-PC collection become plain loops; pre-existing LINQ elsewhere is left for changes that already touch those lines. * [ShaderCompiler] Suppress CA2255 on the evaluator hook installer The analyzer coverage that arrived with the rebase flags ModuleInitializer in library code; this is the rule's intended advanced scenario — the hook must be installed before any code path can reach the evaluator, and every such path enters through this assembly — so suppress with that justification rather than weaken the guarantee to a static constructor's lazier timing. * [Gpu] Resolve rebase artifacts onto main Dedupe the System.Collections.Concurrent using in AgcExports that the rebase merge duplicated (main and this branch each added it), and regenerate the lock files for the new shader-compiler projects and SharpEmu.Libs against main's current package graph so --locked-mode restore matches at the branch tip. * [CI] Comment per-platform build artifact links on PRs Adds a workflow_run workflow that, after "Build and Release" finishes a pull-request build, posts (and keeps updated in place) a single PR comment linking the Windows, Linux, and macOS artifacts from that run. It runs via workflow_run rather than in the build workflow because PRs from forks build with a read-only token that cannot comment; the follow-on run executes in the base-repo context with write access and without checking out fork code. GitHub only triggers workflow_run from the default branch, so this takes effect once merged to main.
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// Copyright (C) 2026 SharpEmu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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namespace SharpEmu.ShaderCompiler;
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/// <summary>
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/// The Gen5 (gfx10) inline-constant operand table, shared by every codegen so backends
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/// cannot drift on constant semantics.
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/// </summary>
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public static class Gen5InlineConstants
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{
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public static bool TryDecode(uint encoded, out uint value)
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{
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if (encoded == 125)
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{
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value = 0;
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return true;
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}
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if (encoded is >= 128 and <= 192)
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{
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value = encoded - 128;
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return true;
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}
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if (encoded is >= 193 and <= 208)
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{
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value = unchecked((uint)-(int)(encoded - 192));
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return true;
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}
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var floatingPoint = encoded switch
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{
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240 => 0.5f,
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241 => -0.5f,
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242 => 1.0f,
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243 => -1.0f,
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244 => 2.0f,
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245 => -2.0f,
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246 => 4.0f,
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247 => -4.0f,
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248 => 1.0f / (2.0f * MathF.PI),
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_ => float.NaN,
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};
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if (float.IsNaN(floatingPoint))
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{
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value = 0;
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return false;
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}
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value = BitConverter.SingleToUInt32Bits(floatingPoint);
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return true;
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}
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}
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@@ -0,0 +1,304 @@
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// Copyright (C) 2026 SharpEmu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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namespace SharpEmu.ShaderCompiler;
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public enum Gen5ShaderEncoding
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{
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Sop1,
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Sop2,
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Sopc,
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Sopp,
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Sopk,
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Smrd,
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Smem,
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Mubuf,
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Mtbuf,
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Vop1,
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Vop2,
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Vopc,
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Vop3,
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Vintrp,
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Ds,
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Flat,
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Vop3p,
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Mimg,
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Exp,
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}
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public enum Gen5OperandKind
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{
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ScalarRegister,
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VectorRegister,
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EncodedConstant,
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LiteralConstant,
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}
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public enum Gen5ShaderResourceKind
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{
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ReadOnlyTexture,
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ReadWriteTexture,
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Sampler,
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ConstantBuffer,
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}
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public enum Gen5PixelOutputKind
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{
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Float,
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Uint,
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Sint,
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}
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public readonly record struct Gen5PixelOutputBinding(
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uint GuestSlot,
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uint HostLocation,
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Gen5PixelOutputKind Kind);
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public readonly record struct Gen5ShaderResourceMapping(
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Gen5ShaderResourceKind Kind,
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uint Slot,
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uint OffsetDwords,
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bool SizeFlag);
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public sealed record Gen5ShaderMetadata(
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uint ExtendedUserDataSizeDwords,
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uint ShaderResourceTableSizeDwords,
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IReadOnlyDictionary<uint, uint> DirectResources,
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IReadOnlyList<Gen5ShaderResourceMapping> Resources);
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public readonly record struct Gen5ComputeSystemRegisters(
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uint? WorkGroupXRegister,
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uint? WorkGroupYRegister,
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uint? WorkGroupZRegister,
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uint? ThreadGroupSizeRegister)
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{
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public bool TryGetExpression(uint scalarRegister, out string expression)
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{
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if (WorkGroupXRegister == scalarRegister)
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{
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expression = "gl_WorkGroupID.x";
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return true;
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}
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if (WorkGroupYRegister == scalarRegister)
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{
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expression = "gl_WorkGroupID.y";
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return true;
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}
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if (WorkGroupZRegister == scalarRegister)
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{
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expression = "gl_WorkGroupID.z";
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return true;
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}
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if (ThreadGroupSizeRegister == scalarRegister)
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{
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expression = "(gl_WorkGroupSize.x * gl_WorkGroupSize.y * gl_WorkGroupSize.z)";
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return true;
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}
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expression = string.Empty;
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return false;
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}
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public void ClearStaticValues(Span<uint> scalarRegisters)
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{
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ClearStaticValue(scalarRegisters, WorkGroupXRegister);
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ClearStaticValue(scalarRegisters, WorkGroupYRegister);
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ClearStaticValue(scalarRegisters, WorkGroupZRegister);
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ClearStaticValue(scalarRegisters, ThreadGroupSizeRegister);
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}
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private static void ClearStaticValue(Span<uint> scalarRegisters, uint? scalarRegister)
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{
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if (scalarRegister is { } register && register < scalarRegisters.Length)
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{
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scalarRegisters[(int)register] = 0;
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}
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}
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}
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public sealed record Gen5ShaderState(
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Gen5ShaderProgram Program,
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IReadOnlyList<uint> UserData,
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Gen5ShaderMetadata? Metadata,
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Gen5ComputeSystemRegisters? ComputeSystemRegisters = null,
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uint UserDataScalarRegisterBase = 0);
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public readonly record struct Gen5Operand(Gen5OperandKind Kind, uint Value)
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{
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public static Gen5Operand Scalar(uint index) =>
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new(Gen5OperandKind.ScalarRegister, index);
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public static Gen5Operand Vector(uint index) =>
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new(Gen5OperandKind.VectorRegister, index);
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public static Gen5Operand Source(uint encoded, uint? literal = null)
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{
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if (encoded >= 256)
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{
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return Vector(encoded - 256);
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}
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if (encoded is 249 or 255 && literal.HasValue)
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{
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return new(Gen5OperandKind.LiteralConstant, literal.Value);
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}
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if (encoded <= 105 || encoded is 106 or 107 or 124 or 126 or 127)
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{
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return Scalar(encoded);
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}
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return new(Gen5OperandKind.EncodedConstant, encoded);
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}
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public override string ToString() => Kind switch
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{
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Gen5OperandKind.ScalarRegister => $"s{Value}",
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Gen5OperandKind.VectorRegister => $"v{Value}",
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Gen5OperandKind.LiteralConstant => $"0x{Value:X8}",
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_ => $"src[{Value}]",
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};
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}
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public abstract record Gen5InstructionControl;
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public sealed record Gen5ImageControl(
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uint Dmask,
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uint VectorAddress,
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IReadOnlyList<uint> AddressRegisters,
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uint VectorData,
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uint ScalarResource,
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uint ScalarSampler,
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uint Dimension,
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bool IsArray,
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bool Glc,
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bool Slc) : Gen5InstructionControl
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{
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public uint GetAddressRegister(int component) =>
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component < AddressRegisters.Count
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? AddressRegisters[component]
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: VectorAddress + (uint)component;
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}
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public sealed record Gen5GlobalMemoryControl(
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uint DwordCount,
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uint VectorAddress,
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uint VectorData,
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uint ScalarAddress,
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int OffsetBytes,
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bool Glc,
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bool Slc) : Gen5InstructionControl;
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public sealed record Gen5BufferMemoryControl(
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uint DwordCount,
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uint VectorAddress,
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uint VectorData,
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uint ScalarResource,
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int OffsetBytes,
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bool IndexEnabled,
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bool OffsetEnabled,
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bool Glc,
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bool Slc) : Gen5InstructionControl;
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public sealed record Gen5ExportControl(
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uint Target,
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uint EnableMask,
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bool Compressed,
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bool Done,
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bool ValidMask) : Gen5InstructionControl;
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public sealed record Gen5InterpolationControl(
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uint Attribute,
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uint Channel) : Gen5InstructionControl;
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public sealed record Gen5Vop3Control(
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uint AbsoluteMask,
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uint NegateMask,
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uint OutputModifier,
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bool Clamp,
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uint? ScalarDestination) : Gen5InstructionControl;
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public sealed record Gen5SdwaControl(
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uint DestinationSelect,
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uint Source0Select,
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uint Source1Select,
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uint AbsoluteMask,
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uint NegateMask,
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uint OutputModifier,
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bool Clamp) : Gen5InstructionControl;
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public sealed record Gen5DppControl(
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uint Control,
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bool FetchInactive,
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bool BoundControl,
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uint AbsoluteMask,
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uint NegateMask,
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uint BankMask,
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uint RowMask) : Gen5InstructionControl;
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public sealed record Gen5ScalarMemoryControl(
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uint DestinationCount,
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int ImmediateOffsetBytes,
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uint? DynamicOffsetRegister) : Gen5InstructionControl;
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public sealed record Gen5DataShareControl(
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uint Offset0,
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uint Offset1,
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bool Gds) : Gen5InstructionControl;
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public sealed record Gen5ImageBinding(
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uint Pc,
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string Opcode,
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Gen5ImageControl Control,
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IReadOnlyList<uint> ResourceDescriptor,
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IReadOnlyList<uint> SamplerDescriptor,
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uint? MipLevel);
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public sealed record Gen5GlobalMemoryBinding(
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uint ScalarAddress,
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ulong BaseAddress,
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IReadOnlyList<uint> InstructionPcs,
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byte[] Data);
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public sealed record Gen5VertexInputBinding(
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uint Pc,
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uint Location,
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uint ComponentCount,
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uint DataFormat,
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uint NumberFormat,
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ulong BaseAddress,
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uint Stride,
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uint OffsetBytes,
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byte[] Data);
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public sealed record Gen5ShaderEvaluation(
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IReadOnlyList<uint> InitialScalarRegisters,
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IReadOnlyList<uint> ScalarRegisters,
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IReadOnlyDictionary<uint, IReadOnlyList<uint>> ScalarRegistersByPc,
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IReadOnlyList<Gen5ImageBinding> ImageBindings,
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IReadOnlyList<Gen5GlobalMemoryBinding> GlobalMemoryBindings,
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Gen5ComputeSystemRegisters? ComputeSystemRegisters = null,
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IReadOnlySet<uint>? RuntimeScalarRegisters = null,
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IReadOnlyList<Gen5VertexInputBinding>? VertexInputs = null);
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public sealed record Gen5ShaderInstruction(
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uint Pc,
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Gen5ShaderEncoding Encoding,
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string Opcode,
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IReadOnlyList<uint> Words,
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IReadOnlyList<Gen5Operand> Sources,
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IReadOnlyList<Gen5Operand> Destinations,
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Gen5InstructionControl? Control);
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public sealed record Gen5ShaderProgram(
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ulong Address,
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IReadOnlyList<Gen5ShaderInstruction> Instructions)
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{
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public IEnumerable<Gen5ImageControl> ImageResources =>
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Instructions
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.Select(instruction => instruction.Control)
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.OfType<Gen5ImageControl>();
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}
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@@ -0,0 +1,124 @@
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// Copyright (C) 2026 SharpEmu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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using SharpEmu.HLE;
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namespace SharpEmu.ShaderCompiler;
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public static class Gen5ShaderMetadataReader
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{
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private const ulong ShaderUserDataOffset = 0x08;
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private const int ResourceClassCount = 4;
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private const int MaxMetadataEntries = 4096;
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public static bool TryRead(
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CpuContext ctx,
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ulong shaderHeaderAddress,
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out Gen5ShaderMetadata metadata)
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{
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metadata = default!;
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if (!ctx.TryReadUInt64(shaderHeaderAddress + ShaderUserDataOffset, out var userDataAddress) ||
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userDataAddress == 0 ||
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!ctx.TryReadUInt64(userDataAddress, out var directResourceOffsetsAddress))
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{
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return false;
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}
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var resourceOffsets = new ulong[ResourceClassCount];
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for (var resourceClass = 0; resourceClass < ResourceClassCount; resourceClass++)
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{
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if (!ctx.TryReadUInt64(
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userDataAddress + 0x08 + (ulong)(resourceClass * sizeof(ulong)),
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out resourceOffsets[resourceClass]))
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{
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return false;
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}
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}
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if (!ctx.TryReadUInt16(userDataAddress + 0x28, out var extendedUserDataSize) ||
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!ctx.TryReadUInt16(userDataAddress + 0x2A, out var shaderResourceTableSize) ||
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!ctx.TryReadUInt16(userDataAddress + 0x2C, out var directResourceCount) ||
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directResourceCount > MaxMetadataEntries)
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{
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return false;
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}
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var resourceCounts = new ushort[ResourceClassCount];
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for (var resourceClass = 0; resourceClass < ResourceClassCount; resourceClass++)
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{
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if (!ctx.TryReadUInt16(
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userDataAddress + 0x2E + (ulong)(resourceClass * sizeof(ushort)),
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out resourceCounts[resourceClass]) ||
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resourceCounts[resourceClass] > MaxMetadataEntries)
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{
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return false;
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}
|
||||
}
|
||||
|
||||
var directResources = new Dictionary<uint, uint>();
|
||||
if (directResourceCount != 0)
|
||||
{
|
||||
if (directResourceOffsetsAddress == 0)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
for (uint type = 0; type < directResourceCount; type++)
|
||||
{
|
||||
if (!ctx.TryReadUInt16(directResourceOffsetsAddress + type * sizeof(ushort), out var offset))
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
if (offset != ushort.MaxValue)
|
||||
{
|
||||
directResources[type] = offset;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var resources = new List<Gen5ShaderResourceMapping>();
|
||||
for (var resourceClass = 0; resourceClass < ResourceClassCount; resourceClass++)
|
||||
{
|
||||
var count = resourceCounts[resourceClass];
|
||||
if (count == 0)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (resourceOffsets[resourceClass] == 0)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
for (uint slot = 0; slot < count; slot++)
|
||||
{
|
||||
if (!ctx.TryReadUInt16(
|
||||
resourceOffsets[resourceClass] + slot * sizeof(ushort),
|
||||
out var sharp))
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
var offset = (uint)(sharp & 0x7FFF);
|
||||
if (offset == 0x7FFF)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
resources.Add(new Gen5ShaderResourceMapping(
|
||||
(Gen5ShaderResourceKind)resourceClass,
|
||||
slot,
|
||||
offset,
|
||||
(sharp & 0x8000) != 0));
|
||||
}
|
||||
}
|
||||
|
||||
metadata = new Gen5ShaderMetadata(
|
||||
extendedUserDataSize,
|
||||
shaderResourceTableSize,
|
||||
directResources,
|
||||
resources);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,15 @@
|
||||
// Copyright (C) 2026 SharpEmu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
namespace SharpEmu.ShaderCompiler;
|
||||
|
||||
/// <summary>
|
||||
/// Guest draw patterns the decoder recognizes from known shader programs. Guest-domain,
|
||||
/// backend-neutral — it previously lived inside the Vulkan presenter, which is exactly
|
||||
/// the kind of placement this project exists to prevent.
|
||||
/// </summary>
|
||||
public enum GuestDrawKind
|
||||
{
|
||||
None,
|
||||
FullscreenBarycentric,
|
||||
}
|
||||
@@ -0,0 +1,20 @@
|
||||
<!--
|
||||
Copyright (C) 2026 SharpEmu Emulator Project
|
||||
SPDX-License-Identifier: GPL-2.0-or-later
|
||||
-->
|
||||
|
||||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<!-- The backend-neutral half of guest shader compilation: the Gen5 (gfx10) microcode
|
||||
decoder, the scalar evaluator, and the shader IR every codegen consumes. Emitters
|
||||
(SPIR-V, MSL, DXIL) live in sibling SharpEmu.ShaderCompiler.* projects; nothing
|
||||
here may depend on a host graphics API. -->
|
||||
<PropertyGroup>
|
||||
<GenerateDocumentationFile>false</GenerateDocumentationFile>
|
||||
</PropertyGroup>
|
||||
|
||||
<ItemGroup>
|
||||
<ProjectReference Include="..\SharpEmu.HLE\SharpEmu.HLE.csproj" />
|
||||
</ItemGroup>
|
||||
|
||||
</Project>
|
||||
@@ -0,0 +1,16 @@
|
||||
{
|
||||
"version": 2,
|
||||
"dependencies": {
|
||||
"net10.0": {
|
||||
"sharpemu.hle": {
|
||||
"type": "Project",
|
||||
"dependencies": {
|
||||
"SharpEmu.Logging": "[0.0.1, )"
|
||||
}
|
||||
},
|
||||
"sharpemu.logging": {
|
||||
"type": "Project"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user