doc: changes.

3 files changed, 943 insertions, 897 deletions

diff --git a/doc/libgraphics.ms b/doc/libgraphics.ms
index aedb662..595f53e 100644
--- a/doc/libgraphics.ms
+++ b/doc/libgraphics.ms
@@ -159,7 +159,9 @@ seen in
 spawned with a call to
 .CW initgraphics ,
 each representing a stage of the pipeline:
-.IP "S1:"
+.NH 2
+renderer
+.PP
 The
 .B renderer
 process, the root of the tree, waits on a
@@ -220,25 +222,29 @@ arrow from Tiler.T1 to Raster.Rn chop
 .PE
 .FI "The rendering graph for a \fB2n\fR processor machine."
 .KE
-.IP "S2:"
+.NH 2
+entityproc
+.PP
 The
 .B entityproc
 receives an entity and splits its geometry equitatively among the
 tilers, sending a batch for each of them to process.
-.IP "S3:"
+.NH 2
+tilers
+.PP
 Next, each
 .B tiler
-gets to work on their subset of the geometry (potentially in
-parallel)—see
+gets to work on their subset of the geometry, potentially in
+parallel—see
 .B "Figure 3" .
 They walk the list of primitives, then for each of them
 apply the
 .B "vertex shader"
 to its vertices (which expects clip space coordinates in return),
 perform frustum culling and clipping, back-face culling, and then
-project them into the viewport (screen space).  Following this step,
-they build a bounding box, used to allocate each primitive into a
-rasterization bucket, or
+project them into the viewport to obtain their screen space
+coordinates.  Following this step, they build a bounding box, used to
+allocate each primitive into a rasterization bucket, or
 .B tile ,
 managed by one of the rasterizers; as illustrated in
 .B "Figure 4" .
@@ -277,7 +283,9 @@ line from Tiles.Tn.e to Raster.Rn.w
 .PE
 .FI "Per tile rasterizers."
 .KE
-.IP "S4:"
+.NH 2
+rasterizers
+.PP
 Finally, the
 .B rasterizers
 receive the primitive in screen space, slice it to fit their tile, and
diff --git a/doc/libgraphics.pdf b/doc/libgraphics.pdf
index 6566ab3..09f2cb1 100644
--- a/doc/libgraphics.pdf
+++ b/doc/libgraphics.pdf
diff --git a/doc/libgraphics.ps b/doc/libgraphics.ps
index a5b6b46..ffbfbca 100644
--- a/doc/libgraphics.ps
+++ b/doc/libgraphics.ps
@@ -794,7 +794,7 @@ mark
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 cleartomark
 showpage
 saveobj restore
@@ -927,7 +927,7 @@ mark
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 cleartomark
 showpage
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 cleartomark
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-7 /LucidaSansUnicode00 f
-(tile 1) 2435 1892 w
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-(2) 3698 1856 w
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-(rasterizer) 3351 2864 w
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 10 /LucidaSans-Demi f
-(Figure 3) 2305 3264 w
+(Figure) 1376 1116 w
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 10 /LucidaSansUnicode00 f
-(: Per tile rasterizers.) 2727 3264 w
-(S4:) 720 3420 w
-(Finally,) 970 3420 w
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 10 /LucidaSans-Demi f
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 10 /LucidaSansUnicode00 f
-(receive) 2128 3420 w
-(the) 2503 3420 w
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-(it) 4225 3420 w
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 10 /LucidaSans-Demi f
-(depth) 4742 3540 w
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 10 /LucidaSansUnicode00 f
-(is) 1215 3660 w
-(performed,) 1343 3660 w
-(discarding) 1934 3660 w
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 10 /LucidaSans-Demi f
-(fragment) 4566 3660 w
-(shader) 970 3780 w
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 10 /LucidaSansUnicode00 f
-(is applied and the result written to the framebuffer after blending.) 1354 3780 w
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 7 /LucidaSansUnicode00 f
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 7 /LucidaSansUnicode20 f
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 7 /LucidaSansUnicode00 f
-(n) 2499 5180 w
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-(Framebuf) 1675 4676 w
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-(rasterizer) 3350 4208 w
-(1) 3698 4208 w
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-(rasterizer) 3350 4712 w
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+(tile n) 2435 3200 w
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+(Framebuf) 1675 2696 w
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+(rasterizer) 3350 2228 w
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+(rasterizer) 3350 2732 w
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 7 /LucidaSansUnicode20 f
-(&) 3511 5216 w
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+(&) 3511 3236 w
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 7 /LucidaSansUnicode00 f
-(rasterizer) 3351 5720 w
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-3304 5636 3329 5705 Dl
+(rasterizer) 3351 3740 w
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+10 /LucidaSans-Demi f
+(Figure 3) 2180 4140 w
+10 /LucidaSansUnicode00 f
+(: Per tile rasterizers.) 2602 4140 w
 10 /LucidaSans-Demi f
-(Figure 4) 2073 6120 w
+(3.4.) 720 4380 w
+(rasterizers) 962 4380 w
 10 /LucidaSansUnicode00 f
-(: Raster task scheduling.) 2495 6120 w
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+(the) 1346 4536 w
 10 /LucidaSans-Demi f
-(4.) 720 6360 w
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 10 /LucidaSansUnicode00 f
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 saveobj restore
@@ -1855,208 +1687,414 @@ mark
 5 pagesetup
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 10 /LucidaSans-Demi f
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 10 /LucidaSansUnicode00 f
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 10 /LucidaSansUnicode00 f
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 10 /LucidaSansUnicode00 f
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 10 /LucidaTypewriter f
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 10 /LucidaSansUnicode00 f
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 10 /LucidaTypewriter f
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 10 /LucidaSans-Demi f
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 10 /LucidaSansUnicode00 f
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 10 /LucidaSans-Demi f
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 10 /LucidaSansUnicode00 f
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-(August 3, 2024) 2503 7680 w
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 cleartomark
 showpage
 saveobj restore
-%%EndPage: 5 5
+%%EndPage: 6 6
 %%Trailer
 done
 %%DocumentFonts: LucidaSansUnicode20 LucidaSansUnicode00 LucidaSans-Demi LucidaSans-Italic LucidaTypewriter
-%%Pages: 5
+%%Pages: 6