diff options
| author | raven <citrons@mondecitronne.com> | 2026-04-11 19:41:05 -0500 |
|---|---|---|
| committer | raven <citrons@mondecitronne.com> | 2026-04-11 19:41:05 -0500 |
| commit | c62bef0fc853750fb23d1a610b26fed48bbcd1f0 (patch) | |
| tree | 507d6a3ba1e9e1428e045dc63a8d7285e9fb4f9e | |
| parent | f6c30f0acf44969646b2c895bd2672c0ebc85d66 (diff) | |
transpose bytes
| -rw-r--r-- | src/memory.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/memory.c b/src/memory.c index 373ca27..23c6350 100644 --- a/src/memory.c +++ b/src/memory.c @@ -16,8 +16,7 @@ uintptr_t to_addr(int x, int y) { memcpy(&ux, &x, sizeof(unsigned int)); memcpy(&uy, &y, sizeof(unsigned int)); uintptr_t page = zorder(ux / PAGE_WIDTH, uy / PAGE_HEIGHT); - int offset = - x % PAGE_WIDTH / CHAR_BIT + y % PAGE_HEIGHT * PAGE_WIDTH / CHAR_BIT; + int offset = x % PAGE_WIDTH / CHAR_BIT * PAGE_HEIGHT + y % PAGE_HEIGHT; return page * PAGE_SIZE + offset; } @@ -102,9 +101,16 @@ SDL_Texture *get_texture(page *p) { } uint32_t hash = fnv(data, PAGE_SIZE); if (p->hash != hash) { + static char pixels[PAGE_SIZE]; + for (int col = 0; col < PAGE_WIDTH / 8; col++) { + for (int row = 0; row < PAGE_HEIGHT; row++) { + pixels[row * PAGE_WIDTH / 8 + col] = + data[col * PAGE_HEIGHT + row]; + } + } if (p->tex) SDL_DestroyTexture(p->tex); SDL_Surface *surface = must(SDL_CreateSurfaceFrom( - PAGE_WIDTH, PAGE_HEIGHT, SDL_PIXELFORMAT_INDEX1LSB, data, + PAGE_WIDTH, PAGE_HEIGHT, SDL_PIXELFORMAT_INDEX1LSB, pixels, PAGE_WIDTH / 8 )); p->tex = must(SDL_CreateTextureFromSurface(renderer, surface)); |