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Fire Emblem: Fortune's Weave's enemy health gauges read only offset 0x40
of root table 0, which is inside the blit parameter block (title 4's
zero dither bias). The pass replaced it with zero and the gauges drew
black. A shader that reads only words the block leaves zero now keeps
its reads: an unbound bank reads zero anyway, and a bound root table
keeps its values.
Assisted-by: Claude Opus 5.5 (debugging, implementation and drafting)
Signed-off-by: Duck912 <350528965+Duck912@users.noreply.github.com>
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The 3D methods 0x504/0x508 write eight 256-byte root tables, which
shaders read as constant banks 24-31; NVN2 keeps push constants in table
0 (bank 17 after the Ampere lowering). Fire Emblem: Fortune's Weave
keeps its material constants there and never binds bank 17, and the
blit constants pass replaced those reads with render-target sizes,
flooding its 3D scenes red.
Maxwell3D now keeps the tables, the buffer cache streams table 0 as bank
17 when the game has not bound one, and the blit constants pass leaves
shaders that read bank 17 outside its parameter block alone.
Assisted-by: Claude Opus 5.5 (debugging, implementation and drafting)
Signed-off-by: Duck912 <350528965+Duck912@users.noreply.github.com>
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- Render area falls back to colour target 0 when the surface clip is unset
(Switch 2 titles may never program it); it feeds the synthesized blit block.
- BlitConstantsPass also covers fragment shaders: UV clamp rectangle 0..1
(0x30-0x3c) and zero dither bias.
- Debug: EDEN_NX2_SKIP_VS=<addr,...>, EDEN_NX2_TRACE_VS=<addr>,
EDEN_NX2_UPSCALE_SOURCE[_FORMAT], EDEN_NX2_TRACE_AFTER_UPSCALE,
EDEN_NX2_SAMPLE_AT, skipped-draw reasons, clear tracing.
Showing the raw HDR scene colour through the upscale fallback gives the
correct lit cockpit scene; the game's tonemap pass still outputs black.
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- When a compute program is rejected for tensor-core math, blit its input
image (handle at cbuf0+0x90) to its output (cbuf0+0xa0) with bilinear
filtering. Title 4 renders at 2560x1440 and upscales to 3840x2160 with a
DLSS-style network; this keeps the 4K output fed. EDEN_NX2_TENSOR=stub keeps
the program with HMMA as D = C (for experiments).
- BlitConstantsPass: vertex shaders reading bank 24 (lowered to 17) get the
console-provided blit block synthesized from the render area (texel size,
size, UV scale 1, rectangle 0..W-1,H-1).
- Debug: EDEN_NX2_CB24_TRACE, upscaler resource description and render target
sampling at the fallback.
The scene behind the intro dialogue is still black: the tonemap output that
feeds the upscaler has no colour although earlier targets do.
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