Update all book 1 rendered images

This also adds a new image illustrating the results of removing shadow
acne.

All images have been renumbered accordingly.

Resolves #875
Resolves #914
Resolves #978
Resolves #1013
Resolves #1182

Author: hollasch

books/RayTracingInOneWeekend.html

@@ -2393,7 +2393,7 @@
 For this very simple scene we should get basically the same result:
 
   ![<span class='num'>Image 8:</span> Second render of a diffuse sphere with limited bounces
-  ](../images/img-1.07-first-diffuse.png class='pixel')
+  ](../images/img-1.08-second-diffuse.png class='pixel')
 
 </div>
 
@@ -2439,7 +2439,13 @@
     [Listing [reflect-tolerance]: <kbd>[camera.h]</kbd>
         Calculating reflected ray origins with tolerance]
 
-This gets rid of the shadow acne problem. Yes it is really called that.
+<div class='together'>
+This gets rid of the shadow acne problem. Yes it is really called that. Here's result:
+
+  ![<span class='num'>Image 9:</span> Diffuse sphere with no shadow acne
+  ](../images/img-1.09-no-acne.png class='pixel')
+
+</div>
 
 
 True Lambertian Reflection
@@ -2508,8 +2514,8 @@
 <div class='together'>
 After rendering we get a similar image:
 
-  ![<span class='num'>Image 9:</span> Correct rendering of Lambertian spheres
-  ](../images/img-1.09-correct-lambertian.png class='pixel')
+  ![<span class='num'>Image 10:</span> Correct rendering of Lambertian spheres
+  ](../images/img-1.10-correct-lambertian.png class='pixel')
 
 </div>
 
@@ -2569,8 +2575,8 @@
 editor of your choice and you should get a very nice visual representation of the increasing
 brightness of your chosen gamut. This is the one that we've been working with so far: 
 
-![<span class='num'>Image 10:</span> The gamut of our renderer so far
-](../images/img-1.10-linear-gamut.png class='pixel')
+![<span class='num'>Image 11:</span> The gamut of our renderer so far
+](../images/img-1.11-linear-gamut.png class='pixel')
 
 If you look closely, or if you use a color picker, you should notice that the 50% reflectance
 render (the one in the middle) is far too dark to be half-way between white and black (middle-gray).
@@ -2628,8 +2634,8 @@
 <div class='together'>
 Using this gamma correction, we now get a much more consistent ramp from darkness to lightness:
 
-  ![<span class='num'>Image 11:</span> The gamma-corrected render of two diffuse spheres
-  ](../images/img-1.11-gamma-gamut.png class='pixel')
+  ![<span class='num'>Image 12:</span> The gamma-corrected render of two diffuse spheres
+  ](../images/img-1.12-gamma-gamut.png class='pixel')
 
 </div>
 
@@ -3001,8 +3007,8 @@
 <div class='together'>
 Which gives:
 
-  ![<span class='num'>Image 12:</span> Shiny metal
-  ](../images/img-1.12-metal-shiny.png class='pixel')
+  ![<span class='num'>Image 13:</span> Shiny metal
+  ](../images/img-1.13-metal-shiny.png class='pixel')
 
 </div>
 
@@ -3064,8 +3070,8 @@
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     [Listing [metal-fuzz-spheres]: <kbd>[main.cc]</kbd> Metal spheres with fuzziness]
 
-  ![<span class='num'>Image 13:</span> Fuzzed metal
-  ](../images/img-1.13-metal-fuzz.png class='pixel')
+  ![<span class='num'>Image 14:</span> Fuzzed metal
+  ](../images/img-1.14-metal-fuzz.png class='pixel')
 
 </div>
 
@@ -3083,8 +3089,8 @@
 there is a refraction ray at all. For this project, I tried to put two glass balls in our scene, and
 I got this (I have not told you how to do this right or wrong yet, but soon!):
 
-  ![<span class='num'>Image 14:</span> Glass first
-  ](../images/img-1.14-glass-first.png class='pixel')
+  ![<span class='num'>Image 15:</span> Glass first
+  ](../images/img-1.15-glass-first.png class='pixel')
 
 Is that right? Glass balls look odd in real life. But no, it isn’t right. The world should be
 flipped upside down and no weird black stuff. I just printed out the ray straight through the middle
@@ -3213,8 +3219,8 @@
 <div class='together'>
 This gives us the following result:
 
-  ![<span class='num'>Image 15:</span> Glass sphere that always refracts
-  ](../images/img-1.15-glass-always-refract.png class='pixel')
+  ![<span class='num'>Image 16:</span> Glass sphere that always refracts
+  ](../images/img-1.16-glass-always-refract.png class='pixel')
 
 </div>
 
@@ -3334,8 +3340,8 @@
 <div class='together'>
 We get:
 
-  ![<span class='num'>Image 16:</span> Glass sphere that sometimes refracts
-  ](../images/img-1.16-glass-sometimes-refract.png class='pixel')
+  ![<span class='num'>Image 17:</span> Glass sphere that sometimes refracts
+  ](../images/img-1.17-glass-sometimes-refract.png class='pixel')
 
 </div>
 
@@ -3414,8 +3420,8 @@
 <div class='together'>
 This gives:
 
-  ![<span class='num'>Image 17:</span> A hollow glass sphere
-  ](../images/img-1.17-glass-hollow.png class='pixel')
+  ![<span class='num'>Image 18:</span> A hollow glass sphere
+  ](../images/img-1.18-glass-hollow.png class='pixel')
 
 </div>
 
@@ -3538,8 +3544,8 @@
 <div class='together'>
 This gives us the rendering:
 
-  ![<span class='num'>Image 18:</span> A wide-angle view
-  ](../images/img-1.18-wide-view.png class='pixel')
+  ![<span class='num'>Image 19:</span> A wide-angle view
+  ](../images/img-1.19-wide-view.png class='pixel')
 
 </div>
 
@@ -3698,8 +3704,8 @@
 <div class='together'>
 to get:
 
-  ![<span class='num'>Image 19:</span> A distant view
-  ](../images/img-1.19-view-distant.png class='pixel')
+  ![<span class='num'>Image 20:</span> A distant view
+  ](../images/img-1.20-view-distant.png class='pixel')
 
 </div>
 
@@ -3716,7 +3722,7 @@
 <div class='together'>
 to get:
 
-  ![<span class='num'>Image 20:</span> Zooming in](../images/img-1.20-view-zoom.png class='pixel')
+  ![<span class='num'>Image 21:</span> Zooming in](../images/img-1.21-view-zoom.png class='pixel')
 
 </div>
 
@@ -3972,8 +3978,8 @@
 <div class='together'>
 We get:
 
-  ![<span class='num'>Image 21:</span> Spheres with depth-of-field
-  ](../images/img-1.21-depth-of-field.png class='pixel')
+  ![<span class='num'>Image 22:</span> Spheres with depth-of-field
+  ](../images/img-1.22-depth-of-field.png class='pixel')
 
 </div>
 
@@ -4064,7 +4070,7 @@
 <div class='together'>
 This gives:
 
-  ![<span class='num'>Image 22:</span> Final scene](../images/img-1.22-book1-final.jpg)
+  ![<span class='num'>Image 23:</span> Final scene](../images/img-1.23-book1-final.jpg)
 
 </div>