mirrors/foot
1
0
Fork 0
mirror of https://codeberg.org/dnkl/foot.git synced 2026-02-08 10:06:22 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge branch 'pixman'

Browse source
This commit is contained in:
Daniel Eklöf 2019-08-17 11:59:52 +02:00
commit d21c4a02a0
No known key found for this signature in database
GPG key ID: 5BBD4992C116573F
12 changed files with 205 additions and 209 deletions
Download patch file Download diff file Expand all files Collapse all files

3
PKGBUILD
View file

@ -9,7 +9,7 @@ makedepends=('meson' 'ninja' 'scdoc')
depends=(
'libxkbcommon'
'wayland'
'freetype2' 'fontconfig' 'cairo')
'freetype2' 'fontconfig' 'pixman')
source=()
pkgver() {
@ -25,4 +25,3 @@ build() {
package() {
DESTDIR="${pkgdir}/" ninja install
}

2
README.md
View file

@ -7,7 +7,7 @@
* fontconfig
* freetype
* cairo
* pixman
* wayland (_client_ and _cursor_ libraries)
* wayland protocols
* xkbcommon

4
config.c
View file

@ -224,7 +224,7 @@ parse_section_colors(const char *key, const char *value, struct config *conf,
return false;
}
conf->colors.alpha = alpha;
conf->colors.alpha = alpha * 65535.;
return true;
}
@ -466,7 +466,7 @@ config_load(struct config *conf)
default_bright[6],
default_bright[7],
},
.alpha = 1.,
.alpha = 0xffff,
},
.cursor = {

2
config.h
View file

@ -18,7 +18,7 @@ struct config {
uint32_t bg;
uint32_t regular[8];
uint32_t bright[8];
double alpha;
uint16_t alpha;
} colors;
struct {

54
font.c
View file

@ -367,19 +367,26 @@ glyph_for_wchar(struct font *font, wchar_t wc, struct glyph *glyph)
if (bitmap->width == 0)
goto err;
/* Map FT pixel format to cairo surface format */
cairo_format_t cr_format =
bitmap->pixel_mode == FT_PIXEL_MODE_MONO ? CAIRO_FORMAT_A1 :
bitmap->pixel_mode == FT_PIXEL_MODE_GRAY ? CAIRO_FORMAT_A8 :
bitmap->pixel_mode == FT_PIXEL_MODE_BGRA ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_INVALID;
/* Map FT pixel format to pixman format */
pixman_format_code_t pix_format =
bitmap->pixel_mode == FT_PIXEL_MODE_MONO ? PIXMAN_a1 :
bitmap->pixel_mode == FT_PIXEL_MODE_GRAY ? PIXMAN_a8 :
bitmap->pixel_mode == FT_PIXEL_MODE_BGRA ? PIXMAN_a8r8g8b8 : -1;
int stride = cairo_format_stride_for_width(cr_format, bitmap->width);
/* Calculate stride. Copied from cairoint.h:CAIRO_STRIDE_FOR_WIDTH_BPP */
int bpp =
pix_format == PIXMAN_a1 ? 1 :
pix_format == PIXMAN_a8 ? 8 :
pix_format == PIXMAN_a8r8g8b8 ? 32 : -1;
assert(bpp >= 0);
int stride = (((bpp * bitmap->width + 7) / 8 + 4 - 1) & -4);
assert(stride >= bitmap->pitch);
uint8_t *data = malloc(bitmap->rows * stride);
assert(bitmap->pitch >= 0);
/* Convert FT bitmap to cairo surface (well, the backing image) */
/* Convert FT bitmap to pixman image */
switch (bitmap->pixel_mode) {
case FT_PIXEL_MODE_MONO:
for (size_t r = 0; r < bitmap->rows; r++) {
@ -413,22 +420,31 @@ glyph_for_wchar(struct font *font, wchar_t wc, struct glyph *glyph)
goto err;
}
cairo_surface_t *surf = cairo_image_surface_create_for_data(
data, cr_format, bitmap->width, bitmap->rows, stride);
pixman_image_t *pix = pixman_image_create_bits_no_clear(
pix_format, bitmap->width, bitmap->rows, (uint32_t *)data, stride);
if (cairo_surface_status(surf) != CAIRO_STATUS_SUCCESS) {
if (pix == NULL) {
free(data);
cairo_surface_destroy(surf);
goto err;
}
if (font->pixel_size_fixup != 1.) {
struct pixman_transform scale;
pixman_transform_init_scale(
&scale,
pixman_double_to_fixed(1. / font->pixel_size_fixup),
pixman_double_to_fixed(1. / font->pixel_size_fixup));
pixman_image_set_transform(pix, &scale);
}
*glyph = (struct glyph){
.wc = wc,
.width = wcwidth(wc),
.surf = surf,
.left = font->face->glyph->bitmap_left,
.top = font->face->glyph->bitmap_top,
.pixel_size_fixup = font->pixel_size_fixup,
.cols = wcwidth(wc),
.pix = pix,
.x = font->face->glyph->bitmap_left / font->pixel_size_fixup,
.y = font->face->glyph->bitmap_top * font->pixel_size_fixup,
.width = bitmap->width,
.height = bitmap->rows,
.valid = true,
};
@ -506,10 +522,8 @@ font_destroy(struct font *font)
if (!it->item.valid)
continue;
cairo_surface_flush(it->item.surf);
void *image = cairo_image_surface_get_data(it->item.surf);
cairo_surface_destroy(it->item.surf);
void *image = pixman_image_get_data(it->item.pix);
pixman_image_unref(it->item.pix);
free(image);
}

21
font.h
View file

@ -7,7 +7,7 @@
#include FT_FREETYPE_H
#include FT_LCD_FILTER_H
#include <fontconfig/fontconfig.h>
#include <cairo.h>
#include <pixman.h>
#include "tllist.h"
//#include "terminal.h"
@ -16,13 +16,14 @@ typedef tll(const char *) font_list_t;
struct glyph {
wchar_t wc;
int cols;
pixman_image_t *pix;
int x;
int y;
int width;
int height;
cairo_surface_t *surf;
int left;
int top;
double pixel_size_fixup;
bool valid;
};
@ -40,13 +41,13 @@ struct font {
double pixel_size_fixup; /* Scale factor - should only be used with ARGB32 glyphs */
struct {
double position;
double thickness;
int position;
int thickness;
} underline;
struct {
double position;
double thickness;
int position;
int thickness;
} strikeout;
bool is_fallback;

6
main.c
View file

@ -555,8 +555,8 @@ main(int argc, char *const *argv)
LOG_DBG("ft: x-scale: %f, height: %f, descent: %f",
x_scale, height, descent);
f->underline.position = ft_face->underline_position * x_scale / 64.;
f->underline.thickness = ft_face->underline_thickness * x_scale / 64.;
f->underline.position = round(ft_face->underline_position * x_scale / 64.);
f->underline.thickness = ceil(ft_face->underline_thickness * x_scale / 64.);
if (f->underline.position == 0.) {
f->underline.position = descent / 2.;
@ -1085,8 +1085,6 @@ out:
tll_free(term.render.workers.queue);
config_free(conf);
cairo_debug_reset_static_data();
return ret;
}

5
meson.build
View file

@ -42,8 +42,9 @@ cc = meson.get_compiler('c')
math = cc.find_library('m')
threads = dependency('threads')
freetype = dependency('freetype2')
fontconfig = dependency('fontconfig')
cairo = dependency('cairo')
pixman = dependency('pixman-1')
wayland_protocols = dependency('wayland-protocols')
wayland_client = dependency('wayland-client')
wayland_cursor = dependency('wayland-cursor')
@ -99,7 +100,7 @@ executable(
'tllist.h',
'vt.c', 'vt.h',
wl_proto_src + wl_proto_headers,
dependencies: [threads, math, cairo, fontconfig, wayland_client, wayland_cursor, xkb],
dependencies: [threads, math, freetype, fontconfig, pixman, wayland_client, wayland_cursor, xkb],
install: true)
custom_target(

232
render.c
View file

@ -37,6 +37,25 @@ color_hex_to_rgb(uint32_t color)
};
}
static inline pixman_color_t
color_hex_to_pixman_with_alpha(uint32_t color, uint16_t alpha)
{
int alpha_div = 0xffff / alpha;
return (pixman_color_t){
.red = ((color >> 16 & 0xff) | (color >> 8 & 0xff00)) / alpha_div,
.green = ((color >> 8 & 0xff) | (color >> 0 & 0xff00)) / alpha_div,
.blue = ((color >> 0 & 0xff) | (color << 8 & 0xff00)) / alpha_div,
.alpha = alpha,
};
}
static inline pixman_color_t
color_hex_to_pixman(uint32_t color)
{
/* Count on the compiler optimizing this */
return color_hex_to_pixman_with_alpha(color, 0xffff);
}
static inline void
color_dim(struct rgb *rgb)
{
@ -45,48 +64,50 @@ color_dim(struct rgb *rgb)
rgb->b /= 2.;
}
static void
draw_underline(const struct terminal *term, cairo_t *cr, const struct font *font,
struct rgb color, double x, double y, int cols)
static inline void
pixman_color_dim(pixman_color_t *color)
{
double baseline = y + term->fextents.height - term->fextents.descent;
double width = font->underline.thickness;
double y_under = baseline - font->underline.position - width / 2.;
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgb(cr, color.r, color.g, color.b);
cairo_set_line_width(cr, width);
cairo_move_to(cr, x, round(y_under) + 0.5);
cairo_rel_line_to(cr, cols * term->cell_width, 0);
cairo_stroke(cr);
color->red /= 2;
color->green /= 2;
color->blue /= 2;
}
static void
draw_bar(const struct terminal *term, cairo_t *cr, struct rgb color,
double x, double y)
draw_bar(const struct terminal *term, pixman_image_t *pix,
const pixman_color_t *color, int x, int y)
{
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgb(cr, color.r, color.g, color.b);
cairo_set_line_width(cr, 1.0);
cairo_move_to(cr, x + 0.5, y);
cairo_rel_line_to(cr, 0, term->cell_height);
cairo_stroke(cr);
/* TODO: investigate if this is the best way */
pixman_image_fill_rectangles(
PIXMAN_OP_SRC, pix, color,
1, &(pixman_rectangle16_t){x, y, 1, term->cell_height});
}
static void
draw_strikeout(const struct terminal *term, cairo_t *cr, const struct font *font,
struct rgb color, double x, double y, int cols)
draw_underline(const struct terminal *term, pixman_image_t *pix,
const struct font *font,
const pixman_color_t *color, int x, int y, int cols)
{
double baseline = y + term->fextents.height - term->fextents.descent;
double width = font->strikeout.thickness;
double y_strike = baseline - font->strikeout.position - width / 2.;
int baseline = y + term->fextents.height - term->fextents.descent;
int width = font->underline.thickness;
int y_under = baseline - font->underline.position - width / 2;
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgb(cr, color.r, color.g, color.b);
cairo_set_line_width(cr, width);
cairo_move_to(cr, x, round(y_strike) + 0.5);
cairo_rel_line_to(cr, cols * term->cell_width, 0);
cairo_stroke(cr);
pixman_image_fill_rectangles(
PIXMAN_OP_SRC, pix, color,
1, &(pixman_rectangle16_t){x, y_under, cols * term->cell_width, width});
}
static void
draw_strikeout(const struct terminal *term, pixman_image_t *pix,
const struct font *font,
const pixman_color_t *color, int x, int y, int cols)
{
int baseline = y + term->fextents.height - term->fextents.descent;
int width = font->strikeout.thickness;
int y_strike = baseline - font->strikeout.position - width / 2;
pixman_image_fill_rectangles(
PIXMAN_OP_SRC, pix, color,
1, &(pixman_rectangle16_t){x, y_strike, cols * term->cell_width, width});
}
static bool
@ -136,7 +157,7 @@ arm_blink_timer(struct terminal *term)
}
static int
render_cell(struct terminal *term, cairo_t *cr,
render_cell(struct terminal *term, pixman_image_t *pix,
struct cell *cell, int col, int row, bool has_cursor)
{
if (cell->attrs.clean)
@ -144,10 +165,10 @@ render_cell(struct terminal *term, cairo_t *cr,
cell->attrs.clean = 1;
double width = term->cell_width;
double height = term->cell_height;
double x = col * width;
double y = row * height;
int width = term->cell_width;
int height = term->cell_height;
int x = col * width;
int y = row * height;
bool block_cursor = has_cursor && term->cursor_style == CURSOR_BLOCK;
bool is_selected = coord_is_selected(term, col, row);
@ -169,41 +190,42 @@ render_cell(struct terminal *term, cairo_t *cr,
if (cell->attrs.blink && term->blink.state == BLINK_OFF)
_fg = _bg;
struct rgb fg = color_hex_to_rgb(_fg);
struct rgb bg = color_hex_to_rgb(_bg);
pixman_color_t fg = color_hex_to_pixman(_fg);
pixman_color_t bg = color_hex_to_pixman_with_alpha(
_bg, block_cursor ? 0xffff : term->colors.alpha);
if (cell->attrs.dim)
color_dim(&fg);
pixman_color_dim(&fg);
if (block_cursor && term->cursor_color.text >> 31) {
/* User configured cursor color overrides all attributes */
assert(term->cursor_color.cursor >> 31);
fg = color_hex_to_rgb(term->cursor_color.text);
bg = color_hex_to_rgb(term->cursor_color.cursor);
fg = color_hex_to_pixman(term->cursor_color.text);
bg = color_hex_to_pixman(term->cursor_color.cursor);
}
struct font *font = attrs_to_font(term, &cell->attrs);
const struct glyph *glyph = font_glyph_for_wc(font, cell->wc);
int cell_cols = glyph != NULL ? max(1, glyph->width) : 1;
int cell_cols = glyph != NULL ? max(1, glyph->cols) : 1;
/* Background */
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, bg.r, bg.g, bg.b, block_cursor ? 1.0 : term->colors.alpha);
cairo_rectangle(cr, x, y, cell_cols * width, height);
cairo_fill(cr);
pixman_image_fill_rectangles(
PIXMAN_OP_SRC, pix, &bg, 1,
&(pixman_rectangle16_t){x, y, cell_cols * width, height});
/* Non-block cursors */
if (has_cursor) {
struct rgb cursor_color = term->cursor_color.text >> 31
? color_hex_to_rgb(term->cursor_color.cursor)
: fg;
pixman_color_t cursor_color = term->cursor_color.text >> 31
? color_hex_to_pixman(term->cursor_color.cursor)
: color_hex_to_pixman(_fg);
if (term->cursor_style == CURSOR_BAR)
draw_bar(term, cr, cursor_color, x, y);
draw_bar(term, pix, &cursor_color, x, y);
else if (term->cursor_style == CURSOR_UNDERLINE)
draw_underline(
term, cr, attrs_to_font(term, &cell->attrs), cursor_color, x, y, cell_cols);
term, pix, attrs_to_font(term, &cell->attrs), &cursor_color,
x, y, cell_cols);
}
if (cell->attrs.blink && !term->blink.active) {
@ -215,36 +237,38 @@ render_cell(struct terminal *term, cairo_t *cr,
return cell_cols;
if (glyph != NULL) {
cairo_save(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
double fixup = glyph->pixel_size_fixup;
cairo_translate(
cr,
x + glyph->left / fixup,
y + term->fextents.ascent - glyph->top * fixup);
cairo_scale(cr, fixup, fixup);
if (cairo_image_surface_get_format(glyph->surf) == CAIRO_FORMAT_ARGB32) {
if (pixman_image_get_format(glyph->pix) == PIXMAN_a8r8g8b8) {
/* Glyph surface is a pre-rendered image (typically a color emoji...) */
if (!(cell->attrs.blink && term->blink.state == BLINK_OFF)) {
cairo_set_source_surface(cr, glyph->surf, 0, 0);
cairo_paint(cr);
pixman_image_composite(
PIXMAN_OP_OVER, glyph->pix, NULL, pix, 0, 0, 0, 0,
x + glyph->x, y + term->fextents.ascent - glyph->y,
glyph->width, glyph->height);
}
} else {
/* Glyph surface is an alpha mask */
cairo_set_source_rgb(cr, fg.r, fg.g, fg.b);
cairo_mask_surface(cr, glyph->surf, 0, 0);
/* TODO: cache */
pixman_image_t *src = pixman_image_create_solid_fill(&fg);
pixman_image_composite(
PIXMAN_OP_OVER, src, glyph->pix, pix, 0, 0, 0, 0,
x + glyph->x, y + term->fextents.ascent - glyph->y,
glyph->width, glyph->height);
pixman_image_unref(src);
}
cairo_restore(cr);
}
/* Underline */
if (cell->attrs.underline)
draw_underline(term, cr, attrs_to_font(term, &cell->attrs), fg, x, y, cell_cols);
if (cell->attrs.underline) {
pixman_color_t color = color_hex_to_pixman(_fg);
draw_underline(term, pix, attrs_to_font(term, &cell->attrs),
&color, x, y, cell_cols);
}
if (cell->attrs.strikethrough)
draw_strikeout(term, cr, attrs_to_font(term, &cell->attrs), fg, x, y, cell_cols);
if (cell->attrs.strikethrough) {
pixman_color_t color = color_hex_to_pixman(_fg);
draw_strikeout(term, pix, attrs_to_font(term, &cell->attrs),
&color, x, y, cell_cols);
}
return cell_cols;
}
@ -258,21 +282,18 @@ grid_render_scroll(struct terminal *term, struct buffer *buf,
int width = buf->width;
int height = (dmg->scroll.region.end - dmg->scroll.region.start - dmg->scroll.lines) * term->cell_height;
const uint32_t stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
LOG_DBG("damage: SCROLL: %d-%d by %d lines (dst-y: %d, src-y: %d, "
"height: %d, stride: %d, mmap-size: %zu)",
dmg->scroll.region.start, dmg->scroll.region.end,
dmg->scroll.lines,
dst_y, src_y, height, stride,
dst_y, src_y, height, buf->stride,
buf->size);
if (height > 0) {
cairo_surface_flush(buf->cairo_surface[0]);
uint8_t *raw = cairo_image_surface_get_data(buf->cairo_surface[0]);
memmove(raw + dst_y * stride, raw + src_y * stride, height * stride);
cairo_surface_mark_dirty(buf->cairo_surface[0]);
uint8_t *raw = buf->mmapped;
memmove(raw + dst_y * buf->stride,
raw + src_y * buf->stride,
height * buf->stride);
wl_surface_damage_buffer(term->wl.surface, 0, dst_y, width, height);
}
@ -287,31 +308,28 @@ grid_render_scroll_reverse(struct terminal *term, struct buffer *buf,
int width = buf->width;
int height = (dmg->scroll.region.end - dmg->scroll.region.start - dmg->scroll.lines) * term->cell_height;
const uint32_t stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
LOG_DBG("damage: SCROLL REVERSE: %d-%d by %d lines (dst-y: %d, src-y: %d, "
"height: %d, stride: %d, mmap-size: %zu)",
dmg->scroll.region.start, dmg->scroll.region.end,
dmg->scroll.lines,
dst_y, src_y, height, stride,
dst_y, src_y, height, buf->stride,
buf->size);
if (height > 0) {
cairo_surface_flush(buf->cairo_surface[0]);
uint8_t *raw = cairo_image_surface_get_data(buf->cairo_surface[0]);
memmove(raw + dst_y * stride, raw + src_y * stride, height * stride);
cairo_surface_mark_dirty(buf->cairo_surface[0]);
uint8_t *raw = buf->mmapped;
memmove(raw + dst_y * buf->stride,
raw + src_y * buf->stride,
height * buf->stride);
wl_surface_damage_buffer(term->wl.surface, 0, dst_y, width, height);
}
}
static void
render_row(struct terminal *term, cairo_t *cr, struct row *row, int row_no)
render_row(struct terminal *term, pixman_image_t *pix, struct row *row, int row_no)
{
for (int col = term->cols - 1; col >= 0; col--)
render_cell(term, cr, &row->cells[col], col, row_no, false);
render_cell(term, pix, &row->cells[col], col, row_no, false);
}
int
@ -349,7 +367,7 @@ render_worker_thread(void *_ctx)
switch (row_no) {
default:
assert(buf != NULL);
render_row(term, buf->cairo[my_id], grid_row_in_view(term->grid, row_no), row_no);
render_row(term, buf->pix, grid_row_in_view(term->grid, row_no), row_no);
break;
case -1:
@ -387,8 +405,7 @@ grid_render(struct terminal *term)
assert(term->height > 0);
struct buffer *buf = shm_get_buffer(term->wl.shm, term->width, term->height, 1 + term->render.workers.count);
cairo_t *cr = buf->cairo[0];
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
pixman_image_t *pix = buf->pix;
bool all_clean = tll_length(term->grid->scroll_damage) == 0;
@ -399,7 +416,7 @@ grid_render(struct terminal *term)
if (cell->attrs.clean) {
cell->attrs.clean = 0;
render_cell(term, cr, cell, at.col, at.row, false);
render_cell(term, pix, cell, at.col, at.row, false);
wl_surface_damage_buffer(
term->wl.surface,
@ -431,12 +448,15 @@ grid_render(struct terminal *term)
int bmargin_height = term->height - bmargin;
uint32_t _bg = !term->reverse ? term->colors.bg : term->colors.fg;
struct rgb bg = color_hex_to_rgb(_bg);
cairo_set_source_rgba(buf->cairo[0], bg.r, bg.g, bg.b, term->colors.alpha);
cairo_rectangle(buf->cairo[0], rmargin, 0, rmargin_width, term->height);
cairo_rectangle(buf->cairo[0], 0, bmargin, term->width, bmargin_height);
cairo_fill(buf->cairo[0]);
pixman_color_t bg = color_hex_to_pixman_with_alpha(_bg, term->colors.alpha);
pixman_image_fill_rectangles(
PIXMAN_OP_SRC, pix, &bg, 1,
&(pixman_rectangle16_t){rmargin, 0, rmargin_width, term->height});
pixman_image_fill_rectangles(
PIXMAN_OP_SRC, pix, &bg, 1,
&(pixman_rectangle16_t){0, bmargin, term->width, bmargin_height});
wl_surface_damage_buffer(
term->wl.surface, rmargin, 0, rmargin_width, term->height);
@ -504,7 +524,7 @@ grid_render(struct terminal *term)
if (!row->dirty)
continue;
render_row(term, cr, row, r);
render_row(term, pix, row, r);
row->dirty = false;
all_clean = false;
@ -590,7 +610,7 @@ grid_render(struct terminal *term)
cell->attrs.clean = 0;
term->render.last_cursor.cell = cell;
int cols_updated = render_cell(
term, cr, cell, term->cursor.col, view_aligned_row, true);
term, pix, cell, term->cursor.col, view_aligned_row, true);
wl_surface_damage_buffer(
term->wl.surface,
@ -605,10 +625,11 @@ grid_render(struct terminal *term)
}
if (term->flash.active) {
cairo_set_source_rgba(buf->cairo[0], 1.0, 1.0, 0.0, 0.5);
cairo_set_operator(buf->cairo[0], CAIRO_OPERATOR_OVER);
cairo_rectangle(buf->cairo[0], 0, 0, term->width, term->height);
cairo_fill(buf->cairo[0]);
/* Note: alpha is pre-computed in each color component */
pixman_image_fill_rectangles(
PIXMAN_OP_OVER, pix,
&(pixman_color_t){.red=0x7fff, .green=0x7fff, .blue=0, .alpha=0x7fff},
1, &(pixman_rectangle16_t){0, 0, term->width, term->height});
wl_surface_damage_buffer(
term->wl.surface, 0, 0, term->width, term->height);
@ -617,7 +638,6 @@ grid_render(struct terminal *term)
assert(term->grid->offset >= 0 && term->grid->offset < term->grid->num_rows);
assert(term->grid->view >= 0 && term->grid->view < term->grid->num_rows);
cairo_surface_flush(buf->cairo_surface[0]);
wl_surface_attach(term->wl.surface, buf->wl_buf, 0, 0);
assert(term->render.frame_callback == NULL);

73
shm.c
View file

@ -7,6 +7,8 @@
#include <sys/mman.h>
#include <linux/memfd.h>
#include <pixman.h>
#define LOG_MODULE "shm"
#include "log.h"
#include "tllist.h"
@ -45,11 +47,10 @@ shm_get_buffer(struct wl_shm *shm, int width, int height, size_t copies)
* No existing buffer available. Create a new one by:
*
* 1. open a memory backed "file" with memfd_create()
* 2. mmap() the memory file, to be used by the cairo surface
* 2. mmap() the memory file, to be used by the pixman image
* 3. create a wayland shm buffer for the same memory file
*
* The cairo surface and the wayland buffer are now sharing
* memory.
* The pixman image and the wayland buffer are now sharing memory.
*/
int pool_fd = -1;
@ -59,8 +60,7 @@ shm_get_buffer(struct wl_shm *shm, int width, int height, size_t copies)
struct wl_shm_pool *pool = NULL;
struct wl_buffer *buf = NULL;
cairo_surface_t **cairo_surface = NULL;
cairo_t **cairo = NULL;
pixman_image_t *pix = NULL;
/* Backing memory for SHM */
pool_fd = memfd_create("f00sel-wayland-shm-buffer-pool", MFD_CLOEXEC);
@ -69,8 +69,12 @@ shm_get_buffer(struct wl_shm *shm, int width, int height, size_t copies)
goto err;
}
/* TODO: copied from font.c */
/* Calculate stride. Copied from cairoint.h:CAIRO_STRIDE_FOR_WIDTH_BPP */
int bpp = 32;
const int stride = (((bpp * width + 7) / 8 + 4 - 1) & -4);
/* Total size */
const uint32_t stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
size = stride * height;
if (ftruncate(pool_fd, size) == -1) {
LOG_ERRNO("failed to truncate SHM pool");
@ -100,27 +104,9 @@ shm_get_buffer(struct wl_shm *shm, int width, int height, size_t copies)
wl_shm_pool_destroy(pool); pool = NULL;
close(pool_fd); pool_fd = -1;
/* Create a cairo surface around the mmapped memory */
cairo_surface = calloc(copies, sizeof(cairo_surface[0]));
cairo = calloc(copies, sizeof(cairo[0]));
for (size_t i = 0; i < copies; i++) {
cairo_surface[i] = cairo_image_surface_create_for_data(
mmapped, CAIRO_FORMAT_ARGB32, width, height, stride);
if (cairo_surface_status(cairo_surface[i]) != CAIRO_STATUS_SUCCESS) {
LOG_ERR("failed to create cairo surface: %s",
cairo_status_to_string(cairo_surface_status(cairo_surface[i])));
goto err;
}
cairo[i] = cairo_create(cairo_surface[i]);
if (cairo_status(cairo[i]) != CAIRO_STATUS_SUCCESS) {
LOG_ERR("failed to create cairo context: %s",
cairo_status_to_string(cairo_status(cairo[i])));
goto err;
}
}
/* One pixman image for each worker thread (do we really need multiple?) */
pix = pixman_image_create_bits_no_clear(
PIXMAN_a8r8g8b8, width, height, (uint32_t *)mmapped, stride);
/* Push to list of available buffers, but marked as 'busy' */
tll_push_back(
@ -128,13 +114,12 @@ shm_get_buffer(struct wl_shm *shm, int width, int height, size_t copies)
((struct buffer){
.width = width,
.height = height,
.stride = stride,
.busy = true,
.size = size,
.mmapped = mmapped,
.wl_buf = buf,
.copies = copies,
.cairo_surface = cairo_surface,
.cairo = cairo}
.pix = pix}
)
);
@ -143,18 +128,8 @@ shm_get_buffer(struct wl_shm *shm, int width, int height, size_t copies)
return ret;
err:
if (cairo != NULL) {
for (size_t i = 0; i < copies; i++)
if (cairo[i] != NULL)
cairo_destroy(cairo[i]);
free(cairo);
}
if (cairo_surface != NULL) {
for (size_t i = 0; i < copies; i++)
if (cairo_surface[i] != NULL)
cairo_surface_destroy(cairo_surface[i]);
free(cairo_surface);
}
if (pix != NULL)
pixman_image_unref(pix);
if (buf != NULL)
wl_buffer_destroy(buf);
if (pool != NULL)
@ -173,18 +148,8 @@ shm_fini(void)
tll_foreach(buffers, it) {
struct buffer *buf = &it->item;
if (buf->cairo != NULL) {
for (size_t i = 0; i < buf->copies; i++)
if (buf->cairo[i] != NULL)
cairo_destroy(buf->cairo[i]);
free(buf->cairo);
}
if (buf->cairo_surface != NULL) {
for (size_t i = 0; i < buf->copies; i++)
if (buf->cairo_surface[i] != NULL)
cairo_surface_destroy(buf->cairo_surface[i]);
free(buf->cairo_surface);
}
if (buf->pix != NULL)
pixman_image_unref(buf->pix);
wl_buffer_destroy(buf->wl_buf);
munmap(buf->mmapped, buf->size);

11
shm.h
View file

@ -3,23 +3,22 @@
#include <stdbool.h>
#include <stddef.h>
#include <cairo.h>
#include <pixman.h>
#include <wayland-client.h>
struct buffer {
int width;
int height;
int stride;
bool busy;
size_t size;
void *mmapped;
struct wl_buffer *wl_buf;
size_t copies;
cairo_surface_t **cairo_surface;
cairo_t **cairo;
pixman_image_t *pix;
};
struct buffer *shm_get_buffer(struct wl_shm *shm, int width, int height, size_t copies);
struct buffer *shm_get_buffer(
struct wl_shm *shm, int width, int height, size_t copies);
void shm_fini(void);

1
terminal.h
View file

@ -8,7 +8,6 @@
#include <threads.h>
#include <semaphore.h>
#include <cairo.h>
#include <wayland-client.h>
#include <primary-selection-unstable-v1.h>
#include <xkbcommon/xkbcommon.h>