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Aurora procedural wallpaper.

This commit is contained in:
Jonas 'Sortie' Termansen 2023-03-15 00:15:12 +01:00
parent 632b3ba422
commit d2c98889bd
3 changed files with 134 additions and 12 deletions
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92
display/display-code.c
View File

@ -218,6 +218,58 @@ void display_remove_window(struct display* display, struct window* window)
assert(!display->top_window || display->active_window);
}
union c { struct { uint8_t b; uint8_t g; uint8_t r; }; uint32_t v; };
static void wallpaper(struct framebuffer fb)
{
static uint32_t s;
static uint32_t t;
static bool seeded = false;
if ( !seeded )
{
s = arc4random();
t = arc4random();
seeded = true;
}
for ( size_t y = 0; y < fb.yres; y++ )
{
for ( size_t x = 0; x < fb.xres; x++ )
{
uint32_t r = 3793 * x + 6959 * y + 1889 * t + 7901 * s;
r ^= (5717 * x * 2953 * y) ^ s ^ t;
r = (r >> 24) ^ (r >> 16) ^ (r >> 8) ^ r;
union c c;
if ( x && (r & 0x3) == 2 )
c.v = framebuffer_get_pixel(fb, x - 1, y);
else if ( y && (r & 0x3) == 1 )
c.v = framebuffer_get_pixel(fb, x, y - 1);
else if ( x && y )
c.v = framebuffer_get_pixel(fb, x - 1, y - 1);
else
{
c.v = t;
c.r = (c.r & 0xc0) | (r >> 0 & 0x3f);
c.g = (c.g & 0xc0) | (r >> 4 & 0x3f);
c.b = (c.b & 0xc0) | (r >> 8 & 0x3f);
}
if ( (r & 0xf0) == 0x10 && c.r ) c.r--;
if ( (r & 0xf0) == 0x20 && c.g ) c.g--;
if ( (r & 0xf0) == 0x30 && c.b ) c.b--;
if ( (r & 0xf0) == 0x40 && c.r != 255 ) c.r++;
if ( (r & 0xf0) == 0x50 && c.g != 255 ) c.g++;
if ( (r & 0xf0) == 0x60 && c.b != 255 ) c.b++;
union c tc = {.v = t};
if ( c.r && c.r - tc.r > (int8_t) (r >> 0) + 64 ) c.r--;
if ( c.r != 255 && tc.r - c.r > (int8_t) (r >> 4) + 240 ) c.r++;
if ( c.g && c.g - tc.g > (int8_t) (r >> 8) + 64) c.g--;
if ( c.g != 255 && tc.g - c.g > (int8_t) (r >> 12) + 240 ) c.g++;
if ( c.b && c.b - tc.b > (int8_t) (r >> 16) + 64 ) c.b--;
if ( c.b != 255 && tc.b - c.b > (int8_t) (r >> 20) + 240 ) c.b++;
framebuffer_set_pixel(fb, x, y, c.v);
}
}
}
void display_composit(struct display* display, struct framebuffer fb)
{
struct damage_rect damage_rect = display->damage_rect;
@ -228,10 +280,14 @@ void display_composit(struct display* display, struct framebuffer fb)
if ( !damage_rect.width || !damage_rect.height )
return;
#if 0
uint32_t bg_color = make_color(0x89 * 2/3, 0xc7 * 2/3, 0xff * 2/3);
for ( size_t y = 0; y < damage_rect.height; y++ )
for ( size_t x = 0; x < damage_rect.width; x++ )
framebuffer_set_pixel(fb, damage_rect.left + x, damage_rect.top + y, bg_color);
#endif
framebuffer_copy_to_framebuffer(fb, display->wallpaper);
for ( struct window* window = display->bottom_window;
window;
@ -343,17 +399,31 @@ void display_render(struct display* display)
if ( mode.fb_format != 32 )
errx(1, "A 32-bit video mode wasn't set");
struct framebuffer fb;
fb.xres = mode.view_xres;
fb.yres = mode.view_yres;
fb.pitch = mode.view_xres;
size_t framebuffer_length = fb.xres * fb.yres;
fb.buffer = (uint32_t*) malloc(sizeof(uint32_t) * framebuffer_length);
size_t framebuffer_size = framebuffer_length * sizeof(fb.buffer[0]);
size_t framebuffer_length = mode.view_xres * mode.view_yres;
size_t framebuffer_size = sizeof(uint32_t) * framebuffer_length;
if ( display->fb_size != framebuffer_size )
{
display->fb.buffer = realloc(display->fb.buffer, framebuffer_size);
display->fb.xres = mode.view_xres;
display->fb.yres = mode.view_yres;
display->fb.pitch = mode.view_xres;
display->fb_size = framebuffer_size;
}
if ( display->wallpaper_size != framebuffer_size )
{
display->wallpaper.buffer =
realloc(display->wallpaper.buffer, framebuffer_size);
display->wallpaper.xres = mode.view_xres;
display->wallpaper.yres = mode.view_yres;
display->wallpaper.pitch = mode.view_xres;
display->wallpaper_size = framebuffer_size;
}
display_on_resolution_change(display, mode.view_xres, mode.view_yres);
display_composit(display, fb);
display_composit(display, display->fb);
{
struct dispmsg_write_memory msg;
@ -362,14 +432,11 @@ void display_render(struct display* display)
msg.device = 0; // TODO: Multi-screen support!
msg.offset = 0; // TODO: mode.fb_location!
msg.size = framebuffer_size;
msg.src = (uint8_t*) fb.buffer;
msg.src = (uint8_t*) display->fb.buffer;
if ( dispmsg_issue(&msg, sizeof(msg)) != 0 )
err(1, "dispmsg_issue: dispmsg_write_memory");
}
// TODO: This could be recycled if the resolution did not change.
free(fb.buffer);
}
void display_keyboard_event(struct display* display, uint32_t codepoint)
@ -677,4 +744,5 @@ void display_on_resolution_change(struct display* display, size_t width, size_t
display->pointer_y = height / 2;
for ( struct window* window = display->bottom_window; window; window = window->above_window )
window_on_display_resolution_change(window, display);
wallpaper(display->wallpaper);
}

4
display/display.h
View File

@ -46,6 +46,10 @@ struct window;
struct display
{
struct framebuffer fb;
struct framebuffer wallpaper;
size_t fb_size;
size_t wallpaper_size;
struct damage_rect damage_rect;
struct window* top_window;
struct window* bottom_window;

50
login/graphical.c
View File

@ -195,12 +195,62 @@ void render_right_text_if_needed(struct framebuffer fb, const char* str, uint32_
render_right_text(fb, str, color);
}
union c { struct { uint8_t b; uint8_t g; uint8_t r; }; uint32_t v; };
static void render_background(struct framebuffer fb)
{
#if 0
uint32_t bg_color = make_color(0x89 * 2/3, 0xc7 * 2/3, 0xff * 2/3);
for ( size_t y = 0; y < fb.yres; y++ )
for ( size_t x = 0; x < fb.xres; x++ )
framebuffer_set_pixel(fb, x, y, bg_color);
#endif
static uint32_t s;
static uint32_t t;
static bool seeded = false;
if ( !seeded )
{
s = arc4random();
t = arc4random();
seeded = true;
}
for ( size_t y = 0; y < fb.yres; y++ )
{
for ( size_t x = 0; x < fb.xres; x++ )
{
uint32_t r = 3793 * x + 6959 * y + 1889 * t + 7901 * s;
r ^= (5717 * x * 2953 * y) ^ s ^ t;
r = (r >> 24) ^ (r >> 16) ^ (r >> 8) ^ r;
union c c;
if ( x && (r & 0x3) == 2 )
c.v = framebuffer_get_pixel(fb, x - 1, y);
else if ( y && (r & 0x3) == 1 )
c.v = framebuffer_get_pixel(fb, x, y - 1);
else if ( x && y )
c.v = framebuffer_get_pixel(fb, x - 1, y - 1);
else
{
c.v = t;
c.r = (c.r & 0xc0) | (r >> 0 & 0x3f);
c.g = (c.g & 0xc0) | (r >> 4 & 0x3f);
c.b = (c.b & 0xc0) | (r >> 8 & 0x3f);
}
if ( (r & 0xf0) == 0x10 && c.r ) c.r--;
if ( (r & 0xf0) == 0x20 && c.g ) c.g--;
if ( (r & 0xf0) == 0x30 && c.b ) c.b--;
if ( (r & 0xf0) == 0x40 && c.r != 255 ) c.r++;
if ( (r & 0xf0) == 0x50 && c.g != 255 ) c.g++;
if ( (r & 0xf0) == 0x60 && c.b != 255 ) c.b++;
union c tc = {.v = t};
if ( c.r && c.r - tc.r > (int8_t) (r >> 0) + 64 ) c.r--;
if ( c.r != 255 && tc.r - c.r > (int8_t) (r >> 4) + 240 ) c.r++;
if ( c.g && c.g - tc.g > (int8_t) (r >> 8) + 64) c.g--;
if ( c.g != 255 && tc.g - c.g > (int8_t) (r >> 12) + 240 ) c.g++;
if ( c.b && c.b - tc.b > (int8_t) (r >> 16) + 64 ) c.b--;
if ( c.b != 255 && tc.b - c.b > (int8_t) (r >> 20) + 240 ) c.b++;
framebuffer_set_pixel(fb, x, y, c.v);
}
}
}
static void render_pointer(struct framebuffer fb)