Based entirely off existing xbyak x86 implementation and available
tests. Still needs a lot of optimization and testing on non-Windows
platforms.
So far passes all tests and boots at least some games on Windows.
version.h is now found via CMAKE_BINARY_DIR on the include path instead
of a hardcoded "build/version.h" path. This allows out-of-tree and
multi-config builds to each generate and find their own version header
without colliding.
d37c22aa replaced skylander with the new portal HID library but
missed updating three CMakeLists.txt files. No replacement needed
since xenia-hid already links xenia-hid-portal transitively.
For 4xMSAA 32bpp, samples 2/3 add a +4 byte horizontal offset to the
EDRAM address. The old typed buffer code (Buffer<uint4>) implicitly
truncated this offset via integer division (>> 2), and the .yw swizzle
compensated by selecting odd elements within the aligned uint4 load.
After the ByteAddressBuffer conversion, Load4 uses the exact byte
address including the +4 offset, shifting the load window by one dword.
The .yw swizzle then picks samples from the wrong pixels, causing
visual artifacts like vertical streaks in Resident Evil 5.
Fix by aligning the load address down to 16 bytes and selecting the
swizzle based on whether the address was offset.
Adds async_shader_compilation cvar (default true) that forces new
pipelines to be created async from the main thread, skips draws entirely
on D3D12 and on vulkan replaces pixel shader with placeholder until the
real one is ready. Causes some visual artifacts on first load but
greatly reduces load times and stutter.
Gamma stored as R16G16B16A16_UNORM is 64bpp in host memory but
represents a single 32bpp pixel, unlike true 64bpp formats which pack
two 32bpp pixels together. Separate dest_is_gamma_unorm16 from
dest_is_64bpp to avoid incorrect coordinate transforms.
Add output paths for gamma_unorm16 destinations:
- gamma→gamma: direct passthrough (already linear in R16G16B16A16)
- k_8_8_8_8→gamma: convert gamma-encoded source to linear
- Cross-format packed EDRAM: midpoint encoding to survive UNORM16
quantization round-trip through PreSaturatedLinearToPWLGamma
Fixes red bleeding in Halo Reach, image halving in Just Cause 2,
Portal not rendering, and black rock/plant textures in Halo Reach.
The original commit (2eea146b) correctly added kXenosFormat_16_16_EDRAM
case labels and fixed the unpack clamp from -1.0 to -32.0, but
incorrectly changed the resolve pack functions from UNorm to signed EDRAM
encoding. The resolve destination is a regular texture sampled as UNorm
[0,1], not EDRAM. Using EDRAM packing double-encodes the [-32,32]
scaling, crushing all values by ~64x and caused visual issues
particularly in UE3 titles.
The bytecode submitted with the change was actually correct, but the
source had additional incorrect pieces that only manifested when shaders
were rebuilt.
Resolves TODO(Triang3l) by implementing a mathematical workaround to allow exponent 31 for extended float16 range up to +/-131008.0f as expected by the native Xbox 360 hardware, bypassing standard D3D12 f32tof16 boundaries which incorrectly clamp/inf values.
Replaces the UNorm packing functions with custom Edram functions to preserve the native [-32.0, 32.0] float range and scale mathematically instead of using saturate(). Fixes displaced water meshes in games like Mercenaries 2.
Applies factors before the MIN/MAX operation - in FSI/ROV via runtime
blending, in FBO/RTV by pre-multiplying shader output when dstFactor is
ONE only, as we don't have access to dest to provide full support as we
do in the FSI/ROV paths.
Simplifies binding by eliminating the need to switch between 32-bit and
64-bit views, and makes it possible to bind the EDRAM via a root descriptor
on Direct3D 12.
Drivers and hardware may provide more optimal paths for untyped buffers
compared to typed.
Also, ByteAddressBuffer may be bound via a root descriptor in Direct3D 12,
greatly simplifying the binding logic.
ByteAddressBuffer also doesn't have the 128 * 2^20 element count limit that
typed and structured buffers have, and doesn't require the structure stride
to be specified at resource creation time in Direct3D 11.
