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[src/trunk]: src/sys/dev/pci use hardware rendering for anti-aliased fonts
details: https://anonhg.NetBSD.org/src/rev/bec60bf8038b
branches: trunk
changeset: 819775:bec60bf8038b
user: macallan <macallan%NetBSD.org@localhost>
date: Fri Dec 16 23:34:46 2016 +0000
description:
use hardware rendering for anti-aliased fonts
diffstat:
sys/dev/pci/pm2fb.c | 128 +++++++++++++++++++++------------------------------
1 files changed, 54 insertions(+), 74 deletions(-)
diffs (212 lines):
diff -r ef6edc6c436a -r bec60bf8038b sys/dev/pci/pm2fb.c
--- a/sys/dev/pci/pm2fb.c Fri Dec 16 23:31:16 2016 +0000
+++ b/sys/dev/pci/pm2fb.c Fri Dec 16 23:34:46 2016 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pm2fb.c,v 1.28 2015/09/16 16:52:54 macallan Exp $ */
+/* $NetBSD: pm2fb.c,v 1.29 2016/12/16 23:34:46 macallan Exp $ */
/*
* Copyright (c) 2009, 2012 Michael Lorenz
@@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pm2fb.c,v 1.28 2015/09/16 16:52:54 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pm2fb.c,v 1.29 2016/12/16 23:34:46 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -603,6 +603,7 @@
BUS_SPACE_MAP_LINEAR);
return pa;
}
+ /* XXX 2nd fb BAR? */
#ifdef PCI_MAGIC_IO_RANGE
/* allow mapping of IO space */
@@ -879,9 +880,11 @@
uint32_t colour)
{
- pm2fb_wait(sc, 7);
+ pm2fb_wait(sc, 9);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_DDA_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_MODE, 0);
+ bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_ALPHA_MODE, 0);
+ bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_DITHER_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_CONFIG,
PM2RECFG_WRITE_EN);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_BLOCK_COLOUR,
@@ -917,9 +920,11 @@
if (xd <= xs) {
dir |= PM2RE_INC_X;
}
- pm2fb_wait(sc, 8);
+ pm2fb_wait(sc, 10);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_DDA_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_MODE, 0);
+ bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_ALPHA_MODE, 0);
+ bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_DITHER_MODE, 0);
if (sc->sc_depth == 8) {
int adjust;
/*
@@ -1130,9 +1135,9 @@
struct wsdisplay_font *font = PICK_FONT(ri, c);
struct vcons_screen *scr = ri->ri_hw;
struct pm2fb_softc *sc = scr->scr_cookie;
- uint32_t bg, fg, /*latch = 0,*/ bg8, fg8, pixel;
- int i, x, y, wi, he, r, g, b, aval;
- int r1, g1, b1, r0, g0, b0, fgo, bgo;
+ uint32_t bg, fg, pixel, /*bg32,*/ fg32, aval;
+ int i, x, y, wi, he;
+ int r1, g1, b1, /*r0, g0, b0,*/ fgo/*, bgo*/;
uint8_t *data8;
int rv = GC_NOPE, cnt = 0;
@@ -1149,8 +1154,12 @@
fg = ri->ri_devcmap[(attr >> 24) & 0xf];
x = ri->ri_xorigin + col * wi;
y = ri->ri_yorigin + row * he;
+
+ /* always blit the cell with the background colour */
+ pm2fb_rectfill(sc, x, y, wi, he, bg);
+
+ /* if we draw a whitespace we're done here */
if (c == 0x20) {
- pm2fb_rectfill(sc, x, y, wi, he, bg);
if (attr & 1)
pm2fb_rectfill(sc, x, y + he - 2, wi, 1, fg);
return;
@@ -1166,77 +1175,57 @@
data8 = WSFONT_GLYPH(c, font);
- pm2fb_wait(sc, 5);
-#if 0
- /*
- * TODO:
- * - use packed mode here as well, instead of writing each pixel separately
- * - see if we can trick the chip into doing the alpha blending for us
- */
- x = x >> 2;
- wi = (wi + 3) >> 2;
-#endif
+ pm2fb_wait(sc, 7);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_MODE, 0);
+ /*
+ * XXX
+ * we *chould* be able to get away without reading the framebuffer
+ * since our background colour is always constant, but for some reason
+ * that produces random, mostly black background
+ */
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_CONFIG,
- PM2RECFG_WRITE_EN /*| PM2RECFG_PACKED*/);
- bus_space_write_4(sc->sc_memt, sc->sc_regh,
- PM2_RE_RECT_START, (y << 16) | x);
- bus_space_write_4(sc->sc_memt, sc->sc_regh,
- PM2_RE_RECT_SIZE, (he << 16) | wi);
- bus_space_write_4(sc->sc_memt, sc->sc_regh,
- PM2_RE_RENDER,
- PM2RE_RECTANGLE | PM2RE_SYNC_ON_HOST |
- PM2RE_INC_X | PM2RE_INC_Y);
+ PM2RECFG_WRITE_EN | PM2RECFG_READ_DST);
+
+ /* enable alpha blending and R3G3B2 output */
+ bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_ALPHA_MODE,
+ PM2AL_ENABLE |
+ PM2AL_OP_SRC_IS_SRC_ALPHA |
+ PM2AL_OP_DST_IS_ONE_MINUS_SRC_ALPHA |
+ PM2AL_332F | PM2AL_RGB);
+ bus_space_write_4(sc->sc_memt, sc->sc_regh, PM2_RE_DITHER_MODE,
+ PM2DM_ENABLE |
+ PM2DM_332F | PM2DM_RGB);
+
/*
* we need the RGB colours here, so get offsets into rasops_cmap
*/
fgo = ((attr >> 24) & 0xf) * 3;
- bgo = ((attr >> 16) & 0xf) * 3;
- r0 = rasops_cmap[bgo];
r1 = rasops_cmap[fgo];
- g0 = rasops_cmap[bgo + 1];
g1 = rasops_cmap[fgo + 1];
- b0 = rasops_cmap[bgo + 2];
b1 = rasops_cmap[fgo + 2];
-#define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
- bg8 = R3G3B2(r0, g0, b0);
- fg8 = R3G3B2(r1, g1, b1);
+
+ fg32 = ( r1 << 16) | (g1 << 8) | b1;
+
+ bus_space_write_4(sc->sc_memt, sc->sc_regh,
+ PM2_RE_RECT_START, (y << 16) | x);
+ bus_space_write_4(sc->sc_memt, sc->sc_regh,
+ PM2_RE_RECT_SIZE, (he << 16) | wi);
- pm2fb_wait(sc, 200);
+ bus_space_write_4(sc->sc_memt, sc->sc_regh,
+ PM2_RE_RENDER,
+ PM2RE_RECTANGLE | PM2RE_SYNC_ON_HOST |
+ PM2RE_INC_X | PM2RE_INC_Y);
+ pm2fb_wait(sc, min(200, ri->ri_fontscale));
+
+ /*
+ * and now we just hammer the forground colour and alpha values into
+ * the upload port
+ */
for (i = 0; i < ri->ri_fontscale; i++) {
aval = *data8;
- if (aval == 0) {
- pixel = bg8;
- } else if (aval == 255) {
- pixel = fg8;
- } else {
- r = aval * r1 + (255 - aval) * r0;
- g = aval * g1 + (255 - aval) * g0;
- b = aval * b1 + (255 - aval) * b0;
- pixel = ((r & 0xe000) >> 8) |
- ((g & 0xe000) >> 11) |
- ((b & 0xc000) >> 14);
- }
-#if 0
- latch = (latch << 8) | pixel;
- /* write in 32bit chunks */
- if ((i & 3) == 3) {
- bus_space_write_stream_4(sc->sc_memt, sc->sc_regh,
- PM2_RE_DATA, latch);
- /*
- * not strictly necessary, old data should be shifted
- * out
- */
- latch = 0;
- cnt++;
- if (cnt > 190) {
- pm2fb_wait(sc, 200);
- cnt = 0;
- }
- }
-#else
+ pixel = fg32 | (aval << 24);
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM2_RE_COLOUR, pixel);
@@ -1244,17 +1233,8 @@
pm2fb_wait(sc, 200);
cnt = 0;
}
-#endif
data8++;
}
-#if 0
- /* if we have pixels left in latch write them out */
- if ((i & 3) != 0) {
- latch = latch << ((4 - (i & 3)) << 3);
- bus_space_write_stream_4(sc->sc_memt, sc->sc_regh,
- PM2_RE_DATA, latch);
- }
-#endif
/*
* XXX
* occasionally characters end up in the cache only partially drawn
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