From 1ab3e5a123109704789c2768e11a4f9af515821d Mon Sep 17 00:00:00 2001 From: Berke Güzel Date: Wed, 14 Oct 2026 13:13:52 +0300 Subject: Redefine public and rendering APIs with explicit contracts --- examples/tablet.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) (limited to 'examples/tablet.c') diff --git a/examples/tablet.c b/examples/tablet.c index 176a82b..ce796a4 100644 --- a/examples/tablet.c +++ b/examples/tablet.c @@ -24,10 +24,11 @@ static void stamp(uint32_t *pixels, int w, int h, double x, double y, double rad } /* Paints paper over the area a resize added, or everything when clear is set. */ -static uint32_t *canvas(yasl_surface *s, int *w, int *h, int *painted_w, int *painted_h, bool clear) +static uint32_t *canvas(yasl_surface *s, int *w, int *h, int *painted_w, int *painted_h, bool clear, struct yasl_cpu_buffer *buffer) { - uint32_t *pixels = yasl_cpu_pixels(s, w, h); - if (!pixels) return NULL; + if (yasl_cpu_acquire(s, buffer) < 0) return NULL; + *w = buffer->width; *h = buffer->height; + uint32_t *pixels = buffer->pixels; if (clear) *painted_w = *painted_h = 0; for (int y = 0; y < *h; y++) for (int x = y < *painted_h ? *painted_w : 0; x < *w; x++) pixels[(size_t)y * *w + x] = PAPER; @@ -43,11 +44,11 @@ int main(int argc, char **argv) if (!strcmp(argv[i], "--smoke-test")) smoke = true; else if (!strcmp(argv[i], "--backend") && i + 1 < argc) { const char *b = argv[++i]; - if (!yasl_set_backend(!strcmp(b, "wayland") ? YASL_BACKEND_WAYLAND : - !strcmp(b, "x11") ? YASL_BACKEND_X11 : YASL_BACKEND_COCOA)) return 1; + if (!(yasl_init(&(struct yasl_options){.backend=!strcmp(b, "wayland") ? YASL_BACKEND_WAYLAND : + !strcmp(b, "x11") ? YASL_BACKEND_X11 : YASL_BACKEND_COCOA}) == 0)) return 1; } else return 1; } - yasl_surface *s = yasl_surface_create("YASL pen canvas — C clears, Escape exits", 800, 600, YASL_SURFACE_CPU); + yasl_surface *s = yasl_surface_create(&(struct yasl_surface_options){.title="YASL pen canvas — C clears, Escape exits", .width=800, .height=600, .type=YASL_SURFACE_CPU, .flags=0}); if (!s) return 1; int painted_w = 0, painted_h = 0, frames = 0, result = 1; bool contact = false; @@ -87,7 +88,8 @@ int main(int argc, char **argv) if (draw || present) { int w, h; int old_w = painted_w, old_h = painted_h; - uint32_t *pixels = canvas(s, &w, &h, &painted_w, &painted_h, clear); + struct yasl_cpu_buffer buffer; + uint32_t *pixels = canvas(s, &w, &h, &painted_w, &painted_h, clear, &buffer); if (!pixels) break; if (w != old_w || h != old_h) contact = false; if (draw) { @@ -99,7 +101,7 @@ int main(int argc, char **argv) for (int i = 1; i <= steps; i++) stamp(pixels, w, h, x - dx + dx * i / steps, y - dy + dy * i / steps, radius, erase); last_x = x; last_y = y; } - if (!yasl_cpu_present(s)) break; + if ((yasl_cpu_present(s, &buffer) < 0)) break; frames++; } if (e.type == YASL_EVENT_PEN || e.type == YASL_EVENT_POINTER) contact = down; -- cgit v1.2.3