feat: improve

Presentation/slides.md

@@ -107,7 +107,7 @@ level: 2
 transition: slide-up
 ---
 
-# A simple blur algorithm
+# A Simple Blur Algorithm
 
 ````md magic-move
 ```cpp {all|3|4|all} twoslash
@@ -186,11 +186,11 @@ alloc out[2046][3072]
 for each ty in 0..2048/32:
   for each tx in 0..3072/32:
     alloc blurx[-1..33][32]
-    for y in -1..33:
+    for each y in -1..33:
-      for x in 0..32:
+      for each x in 0..32:
         blurx[y][x] = in[ty*32+y][tx*32+x-1] + in[ty*32+y][tx*32+x] + in[ty*32+y][tx*32+x+1]
-    for y in 0..32:
+    for each y in 0..32:
-      for x in 0..32:
+      for each x in 0..32:
         out[ty*32+y][tx*32+x] = blurx[y-1][x] + blurx[y ][x] + blurx[y+1][x]
 ```
 
@@ -199,11 +199,11 @@ for each ty in 0..2048/32:
 alloc out[2046][3072]
 for each ty in 0..2048/8:
   alloc blurx[-1..1][3072]
-  for y in -2..8:
+  for each y in -2..8:
-    for x in 0..3072:
+    for each x in 0..3072:
       blurx[(y+1)%3][x] = in[ty*8+y+1][tx*32+x-1] + in[ty*8+y+1][tx*32+x] + in[ty*8+y+1][tx*32+x+1]
-    if y < 0: continue
+    if each y < 0: continue
-    for x in 0..3072:
+    for each x in 0..3072:
       out[ty*8+y][x] = blurx[(y-1)%3][x] + blurx[ y % 3][x] + blurx[(y+1)%3][x]
 ```
 
@@ -237,10 +237,13 @@ hideInToc: true
 | Local Laplacian | 21               | 189*             | 9×      | 52           | 262*         | 5×             |
 
 ---
-transition: slide-left
+
----
 # References
 - [Halide: a language and compiler for optimizing parallelism, locality, and recomputation in image processing pipelines](https://dl.acm.org/doi/10.1145/2491956.2462176)
 - [CPU die shot](https://www.computerhope.com/issues/pictures/cpu-cache-die.png)
 - [Memory Hierarchy](https://www.cs.swarthmore.edu/~kwebb/cs31/f18/memhierarchy/figures/MemoryHierarchy.png)
 - [Moore's Law](https://image3.slideserve.com/6552767/moore-s-law-l.jpg)
+
+---
+
+# Questions?