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Fix cutscene depth-of-field striping and ghosting at render scale > 1

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The cutscene DoF chain is authored for the 640×360 guest grid; at render scale > 1 its guest-granular blur kernels alias against host-granular content, visible as streaks and ghost outlines. Fix: snap the two CoC pre-blur passes to guest texel centers and densify the two 13-tap gather passes per axis. Hash-allowlisted, behind ac6_fix_dof (on), inert at 1x.
This commit is contained in:
Dipshet
2026-07-31 03:58:29 +02:00
parent 562ad5020a
commit 23e463737c
4 changed files with 217 additions and 2 deletions
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src/main.cpp
+19
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@@ -19,6 +19,9 @@ REXCVAR_DECLARE(int32_t, draw_resolution_scale_y);
REXCVAR_DECLARE(bool, param_gen_integer_guest_position);
REXCVAR_DECLARE(bool, param_gen_host_subpixel_restore);
REXCVAR_DECLARE(std::string, ac6_neutralize_deswizzle_hashes);
REXCVAR_DECLARE(std::string, ac6_snap_guest_texel_hashes);
REXCVAR_DECLARE(std::string, ac6_densify_x_fetch_hashes);
REXCVAR_DECLARE(std::string, ac6_densify_y_fetch_hashes);
REXCVAR_DECLARE(std::string, log_file);
REXCVAR_DECLARE(std::string, log_level);
REXCVAR_DECLARE(bool, ac6_d3d_trace);
@@ -70,6 +73,13 @@ REXCVAR_DEFINE_BOOL(ac6_fix_deswizzle, true, "AC6",
"sub-tile de-swizzle, which is always a wrong texel permutation once the "
"emulator detiles to linear. On by default; effective at all draw scales "
"(the swizzle is present at 1x too).");
REXCVAR_DEFINE_BOOL(ac6_fix_dof, true, "AC6",
"Fix the in-engine cutscene depth-of-field striping/ghosting at draw "
"resolution scale > 1: the 6-pass DoF chain is authored for the 640x360 "
"grid, so its guest-texel kernels alias against the extra detail of "
"scaled sources (combed CoC weights, ghost copies at the sparse gather "
"taps). Snaps the CoC pre-blurs to the guest grid and densifies the "
"gather taps along each pass's axis. On by default; inert at 1x.");
#include "generated/ac6recomp_config.h"
#include "generated/ac6recomp_init.h"
@@ -187,6 +197,15 @@ void ApplyAc6FixDefaults() {
AC6_SET_IF_UNSET(ac6_neutralize_deswizzle_hashes,
"7d22894002d16018, 17e5e4ac3e713245:4");
}
// Cutscene DoF chain (CoC pre-blur pair snapped to the guest grid; the
// two 13-tap gathers densified along their pass axes). The translator
// only emits these at draw scale > 1, so no scale gate is needed here.
if (REXCVAR_GET(ac6_fix_dof)) {
AC6_SET_IF_UNSET(ac6_snap_guest_texel_hashes,
"85d733927e3bba9c, d050dfa6f58567f6");
AC6_SET_IF_UNSET(ac6_densify_x_fetch_hashes, "6328f9c40913c82c");
AC6_SET_IF_UNSET(ac6_densify_y_fetch_hashes, "5bd20f9d0d911687");
}
}
#undef AC6_SET_IF_UNSET