- Fixes#19623
With a fake mipmap change (Japanese Tactics Ogre), each PSP level is cached and hashed as its own
2D texture, but since 73c06bb776 (v1.14) the replacement and dump code used the PSP level as the
replacement level. Loading a replacement for a level-2 font sheet asked for level 2 of a one-level
replacement and hit the "Invalid miplevel" assert, and dumps were named _2, which the ini then
treats as an ignored texture. Use the created texture's level for both again, as 1.13.2 did.
Also don't force mip filtering from a mipmapped replacement when only one level was uploaded.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Runs the same compute shaders as the Vulkan backend, translated to MSL,
in the upload command buffer: levels decode unscaled into the push
buffer and get scaled into a view of the level. Push constants go in a
buffer of their own. Multipass shaders (NNEDI3) use scratch textures
that live for the frame.
Shaders with a constant buffer (only the smiley test shader) aren't
supported.
All the texture shaders give the same result as Vulkan's on LocoRoco
and God of War savestates.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Like the Vulkan backend, with "Auto Max Quality" texture filtering give
textures up to 256x256 a full mip chain, generating the levels the game
didn't supply with a blit. Mipmapping is now controlled by the
sampler's LOD clamps alone, as on Vulkan, so the mip filter is always
set.
With max quality on, the frame dumps that change are the same 829 on
both backends, and match Vulkan's to within 41 pixels.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Like the Vulkan backend, upload the decoder's 5650, 5551 and 4444
pixels as they are, in B5G6R5Unorm, BGR5A1Unorm and ABGR4Unorm with a
swizzle (Metal names packed channels from the lowest bits up, the PSP
stores red lowest), instead of expanding them to 8888. Halves the
decoding writes and memory for those textures.
It also makes Everybody's Golf's dump identical to Vulkan's, which
already sampled these at 16 bits.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The render manager now records commands on the emu thread, keeping all
of its decisions there (lazy passes, clear merging, redundant state),
and they're encoded on a render thread, or inline when
bRenderMultiThreading is off, as in the Vulkan backend.
Before encoding, passes to the same framebuffer are merged across
independent work, by the rules of VulkanQueueRunner's render pass merge.
God of War alternates with block transfers to other framebuffers, and
went from about 41 to 18 render passes a frame, which more than halved
its GPU time.
Passes where nothing tests or writes depth or stencil leave the
attachment unloaded and unstored, like the Vulkan backend, which
doesn't attach depth then.
On the eight benchmark states, Metal now uses 4-13% less CPU than
Vulkan, with wall times from 6% faster to 4% slower.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Draws use an unretained encoder pointer and pipeline struct pointers
instead of passing ObjC objects around (each return goes through
autorelease and retain), and only bind the texture slots the fragment
shader uses. Brings the emu thread's retain/release work down to 0.6%,
and instruction counts 2-11% below Vulkan's on the benchmark states.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Resources that the GPU may still use are now released through the render
manager's per-frame list, freed once the frame's work completes, instead
of command buffers retaining everything that's bound.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
GPU/Metal, modelled on GPU/Vulkan since the shaders are the same Vulkan
GLSL, translated to MSL. Drawing goes through the render manager's state
setters, so it shares encoders with thin3d.
thin3d fixes found along the way:
- Binding the framebuffer that's already the target continues the pass,
applying clears and ignoring DontCare, like VulkanRenderManager.
- Separate depth or stencil copies, through a buffer, so the stencil
survives a framebuffer resize (Need for Speed Shift).
- Stencil export, so stencil uploads take one pass.
Out of the 1061 dumps in ppsspp-framedumps, 1058 render identically to
Vulkan (two of the others are bad dumps), as do the eight benchmark
savestates.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
