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D226: HUD scale option (Game.HudScale 75-200%) — fast3d G_HUDSCALE_EXT rect scaling about per-element anchors

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Ammo (per-hand corner), bottom messages/title card (bottom-left) and top
dialogue (text origin) scale with crisp glyphs; dialogue and bottom
messages are width-capped because their line breaks are authored. 100%
emits nothing (golden 3/3). Captures verified at 150/200%; Win + Linux.
This commit is contained in:
James Dansereau committed 2026-09-24 11:28:29 -04:00
1 parent 0de97b9c67
commit 3072035417
6 files changed
+145
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port/fast3d/gfx_pc.cpp
+38
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@@ -3384,8 +3384,36 @@ static void gfx_draw_rectangle(int32_t ulx, int32_t uly, int32_t lrx, int32_t lr
}
}
/* D226: HUD span scale (G_HUDSCALE_EXT, emitted by port/include/hudaspect.h
* PORT_HUD_SCALE around specific HUD draws). While active, every rectangle
* (text glyphs, message boxes, ammo icons are all rects) is scaled about the
* anchor in logical 10.2 screen space, and texrect steps are divided by the
* scale so the same texels cover the larger/smaller rect. 1.0 = inactive. */
static float s_hud_scale = 1.0f;
static int32_t s_hud_ax = 0, s_hud_ay = 0; /* anchor, 10.2 fixed (px*4) */
static inline void gfx_hud_scale_rect(int32_t& ulx, int32_t& uly, int32_t& lrx, int32_t& lry) {
if (s_hud_scale == 1.0f) {
return;
}
ulx = s_hud_ax + (int32_t)lroundf((float)(ulx - s_hud_ax) * s_hud_scale);
lrx = s_hud_ax + (int32_t)lroundf((float)(lrx - s_hud_ax) * s_hud_scale);
uly = s_hud_ay + (int32_t)lroundf((float)(uly - s_hud_ay) * s_hud_scale);
lry = s_hud_ay + (int32_t)lroundf((float)(lry - s_hud_ay) * s_hud_scale);
/* A full-width box (e.g. the dialogue backdrop, 0..W) scaled about a
* centre anchor goes negative; negative rect coords are not drawn, so
* clip at the canvas origin (the right/bottom overhang is harmless). */
if (ulx < 0) ulx = 0;
if (uly < 0) uly = 0;
}
static void gfx_dp_texture_rectangle(int32_t ulx, int32_t uly, int32_t lrx, int32_t lry, uint8_t tile, int16_t uls,
int16_t ult, int16_t dsdx, int16_t dtdy, bool flip) {
if (s_hud_scale != 1.0f) { /* D226 */
gfx_hud_scale_rect(ulx, uly, lrx, lry);
dsdx = (int16_t)lroundf((float)dsdx / s_hud_scale);
dtdy = (int16_t)lroundf((float)dtdy / s_hud_scale);
}
uint64_t saved_combine_mode = rdp.combine_mode;
if ((rdp.other_mode_h & (3U << G_MDSFT_CYCLETYPE)) == G_CYC_COPY) {
// Per RDP Command Summary Set Tile's shift s and this dsdx should be set to 4 texels
@@ -3509,6 +3537,7 @@ static void gfx_dp_image_rectangle(int32_t tile, int32_t w, int32_t h,
}
static void gfx_dp_fill_rectangle(int32_t ulx, int32_t uly, int32_t lrx, int32_t lry) {
gfx_hud_scale_rect(ulx, uly, lrx, lry); /* D226 */
if (rdp.color_image_address == rdp.z_buf_address) {
// Don't clear Z buffer here since we already did it with glClear
return;
@@ -3698,6 +3727,14 @@ static void gfx_run_dl(Gfx* cmd) {
case (uint8_t)G_CLEARGEOMETRYMODE:
gfx_sp_geometry_mode(cmd->words.w1, 0);
break;
case 0x46: /* G_HUDSCALE_EXT (D226): w0 low16 = scale*256 (0/256 = off), w1 = ax4<<16 | ay4 */
{
const uint32_t sc = C0(0, 16);
s_hud_scale = (sc == 0 || sc == 256) ? 1.0f : (float)sc / 256.0f;
s_hud_ax = (int32_t)C1(16, 16);
s_hud_ay = (int32_t)C1(0, 16);
break;
}
case G_EXTRAGEOMETRYMODE_EXT:
gfx_sp_extra_geometry_mode(~C0(0, 24), cmd->words.w1);
break;
@@ -4091,6 +4128,7 @@ static double s_perf_pre = 0, s_perf_post = 0, s_perf_swap = 0;
static uint64_t s_perf_frames = 0, s_perf_last_start = 0;
extern "C" void gfx_run(Gfx* commands) {
s_hud_scale = 1.0f; /* D226: never carry a HUD scale across frames */
const uint64_t perf_t0 = gfx_perfstat_on() ? gfx_perf_now_ns() : 0;
++num_dls;
gfx_sp_reset();