The OpenGL renderer has always drawn shaded and texture-modulated pixels
at 8 bits per channel with no dither pattern (true colour). That stays the
default. 'on' applies the PS1 4x4 offset matrix and 5-bit truncation per
internal-resolution pixel; 'scaled' puts the pattern on the native grid,
so it reads like the console at any scale and the native VRAM is the same
at every internal resolution.
GP0(E1h) bit 9 reaches the backend through a new optional facade hook
(gr_set_dither) recorded for the render thread and Smooth motion redraws.
With the mode off nothing flushes and no uniform changes. Flat, raw and
other 5-bit-exact pixels are never touched.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Verifies the four PS1 semi-transparency modes, set-mask, mask check and
texel STP at 4x internal resolution with PGXP depth on and off, directly
and on the render thread, against the PS1 formulas and the software
rasterizer (new gl_blend_accuracy_test).
Finding: with the historical surface bases (fills and texels stored as
k*255/31, everything else as k*8) single-layer blends are off by one 5-bit
step in places (1312 of the test's checked pixels, e.g. B+F/4 over a fill).
[video] accurate_blending = true stores every VRAM write as k*8 so GL's
8-bit blend truncated by the readback is exactly the PS1 arithmetic; whites
of fills/texels then present as 248 like uploads already do. Default off.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Filter mode 3 magnifies textures with an edge-directed rule after Hyllian's
xBR (written from the published description, no code reused): for the
texel corner nearest a sample, weighted YUV colour distances over a 5x5
neighbourhood decide whether an edge runs along the corner's diagonal; if
so the corner is cut with an anti-aliased boundary and takes the closer
side neighbour. Flat areas, straight edges, gradients, cutouts and 1:1 draws
stay nearest. Selectable from [video] texture_filtering, settings.toml,
PSX_TEXTURE_FILTER and the new texture_filter TCP command. Default unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Enhancement arenas (GPU DMA aperture, Expansion-1 mod memory) were untracked, so Crash widescreen drew every vertex native with no depth. Adds depth stats/clear causes to pgxp, depth to pgxp_tri_ring, input_route_start at_frame, integer number keys in game.toml.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
[video] fmv_chroma_smoothing = true makes the OpenGL present of a 24-bit
(MDEC) frame keep each sample's luma and take its chroma from a [1 2 1]
tent over the 3x3 source pixels, hiding the 2x2 colour blocks of 4:2:0
video without softening luma. Pairs with the existing fmv_filter upscale.
Guest VRAM/MDEC output untouched; 15-bit presents and the default unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
[video] texture_lod = "mipmap" emulates mip levels for PS1 texture pages,
which are decoded per fetch from VRAM and so have no GL mip chain: the
screen-space UV footprint of a minified, proven-3D primitive is box-averaged
(opaque texels of the fragment's STP class only), and anisotropic_filtering
(1..16) spreads that many taps along the footprint's major axis. Every tap
clamps to the primitive's UV bounds or texture window, so packed atlases
never bleed. The mode rides in the textured batch's filter key; off (the
default), sprites/HUD and magnified textures are unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
master's HD texture packs (#557 base) added gpu_hd_textures_* calls to the GL
renderer and the gpu_render.c facade; the fixture runs without a pack. The
command index is regenerated for frame_gen.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
docs/RENDER_THREAD.md: the record/replay model, why guest-visible VRAM
stays gpu.c's array (private upload source on the render thread), the
guest state captured at record time, every sync point with file:line,
the frame bound and present skipping, interoperation with savestates,
netplay, render passes, interpolation, widescreen, resolution changes,
screenshots, headless and Vulkan, what is out of scope, and the tests.
TCP_COMMANDS.md documents render_thread (index regenerated);
config_schema.md documents [video] render_thread.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Load modern texpage/texupload PNG replacements independently of DuckStation source. Integrate pack folders and options with mods, preserve native VRAM, and validate GL rendering, format matching, dump safety, and upload invalidation.
Reports whether local Rewind is enabled and open, the title block
(psx_mod_set_rewind_blocked) and the snapshots held, so scripted headless runs
can check that a blocked title captures no history and refuses to open.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
psx_mod_allow_direct_shortcut(PSX_MOD_SHORTCUT_*) lets a host shortcut
bound to one controller button act on that button alone. Without it a
one-button binding means Select + button, like the legacy encoding, so a
title can default to a one-button binding safely whether or not its mod is
enabled. While allowed (Rewind: while Rewind is enabled) the runtime claims
the host button: it never reaches P1's guest pad, and a claim made while it
is held lasts until release. Allowances clear at every mod session start.
Multi-button bindings behave as before.
game.toml [controller] direct_shortcut / direct_shortcut_button lets the
title default that shortcut to one button and tells the launcher to capture
it as one button (RECOMP_LAUNCHER_HAS_DIRECT_ASSIST_BIND). No title id is
checked anywhere.
Debug: set_input {"layer":"host", buttons, lx..ry, lt, rt} arms a
virtual P1 gamepad that feeds stage 1 of the offline input path (so sources,
title transforms and trigger values see it) and shortcut polling. A plain
set_input override still wins. Headless runs with the layer armed resolve
P1 through the same path and poll Rewind and the fast-forward latch; the
Rewind pause loop keeps the debug endpoint live and runs without a window.
Binding semantics and the claim latch are pure (psx_hotkey_pad.h) and
covered by psx_hotkey_pad_test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Also: wtrace_dump_test skips (exit 77) without a C compiler, supports cl, brace-matched extraction.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Shokunin