ref: c40a1238f24534b5f433308d92308e1481464141
parent: f1ebb9143a4f095574d806677cc1c64d3df79c24
author: rodri <rgl@antares-labs.eu>
date: Wed Apr 24 08:36:41 EDT 2024
doc: add some schematics about the overall architecture.
--- a/doc/libgraphics.ms
+++ b/doc/libgraphics.ms
@@ -2,33 +2,152 @@
libgraphics
.AU
Rodrigo G. López
-.sp
rgl@antares-labs.eu
-.AI
-Antares Telecom Laboratories
-Albatera, Alicante
-.FS
-ACHTUNG! this is a
-.B "WORK IN PROGRESS"
-.FE
-.NH 1
-Data Structures
-.NH 2
-Camera
-.P1
-struct Camera {- RFrame3; /* VCS */
- Image *viewport;
- double fov; /* vertical FOV */
- struct {- double n, f; /* near and far clipping planes */
- } clip;
- Projection ptype;
- Matrix3 proj; /* VCS to viewport xform */
-};
-.P2
+.AB
+To be determined.
+.AE
+.SH
+Rendering graph
.PP
-A camera is an image capturing entity, analog to the real world device
-we all know, that allows us to see the virtual 3-D world by projecting
-it into a viewport we can attach to a screen or window for real-time
-visualization or write out into a file.
+.PS
+.ps 7
+circlerad = 0.3
+moveht = 0.1
+box "Renderjob"
+arrow
+R: circle "renderer"
+arrow
+E: circle "entityproc"
+move
+Tiler: [
+ down
+ T0: circle "tiler 0"
+ move
+ T1: circle "tiler 1"
+ move
+ Td: circle "…"
+ move
+ Tn: circle "tiler n"
+]
+move
+Raster: [
+ down
+ R0: circle "rasterizer 0"
+ move
+ R1: circle "rasterizer 1"
+ move
+ Rd: circle "…"
+ move
+ Rn: circle "rasterizer n"
+]
+arrow from E to Tiler.T0 chop
+arrow from E to Tiler.T1 chop
+arrow from E to Tiler.Td chop
+arrow from E to Tiler.Tn chop
+arrow from Tiler.T0 to Raster.R0 chop
+arrow from Tiler.T0 to Raster.R1 chop
+arrow from Tiler.T0 to Raster.Rd chop
+arrow from Tiler.T0 to Raster.Rn chop
+arrow from Tiler.T1 to Raster.R0 chop
+arrow from Tiler.T1 to Raster.R1 chop
+arrow from Tiler.T1 to Raster.Rd chop
+arrow from Tiler.T1 to Raster.Rn chop
+.ps 10
+.PE
+.B "Figure 1" :
+For a
+.B 2(n+1)
+processor machine.
+.SH
+The scene
+.PP
+.PS
+.ps 7
+boxwid = 0.5
+boxht = 0.2
+linewid = 0.1
+lineht = 0.2
+box "Scene"
+down; line from last box.s; right; line
+box "Entity"
+down; line from last box.s; right; line
+box "Model"
+down; line from last box.s; right; line
+box "Mesh"
+down; line from last box.s; right; line
+box "Primitive"
+down
+line from 2nd last line.s; line; right; line
+box "Material"
+.ps 10
+.PE
+.SH
+Tile-based rendering
+.PP
+.PS
+.ps 7
+Tiles: [
+ boxht = 0.2
+ boxwid = 1.25
+ down
+ T0: box dashed "tile 0"
+ T1: box dashed "tile 1"
+ Td: box dashed "…"
+ Tn: box dashed "tile n"
+]
+box ht last [].ht+0.1 wid last [].wid+0.1 at last []
+"Screen" rjust with .se at last [].nw - (0.1,0)
+Raster: [
+ moveht = 0.1
+ down
+ R0: circle "rasterizer 0"
+ move
+ R1: circle "rasterizer 1"
+ move
+ Rd: circle "…"
+ move
+ Rn: circle "rasterizer n"
+] with .w at Tiles.e + (0.5,0)
+line from Tiles.T0.e to Raster.R0.w
+line from Tiles.T1.e to Raster.R1.w
+line from Tiles.Td.e to Raster.Rd.w
+line from Tiles.Tn.e to Raster.Rn.w
+.ps 10
+.PE
+.B "Figure 2" :
+Per tile rasterizers.
+.PS
+.ps 7
+Tiles: [
+ boxht = 0.2
+ boxwid = 1.25
+ down
+ T0: box dashed "0"
+ T1: box dashed "1"
+ Td: box dashed "…"
+ Tn: box dashed "n"
+]
+line from last [].w + (0.1,-0.05) to last [].n - (-0.1,0.25)
+line to last [].se - (0.3,-0.1)
+line to 1st line
+box ht last [].ht+0.1 wid last [].wid+0.1 at last []
+"Screen" rjust with .se at last [].nw - (0.1,0)
+Raster: [
+ moveht = 0.1
+ down
+ R0: circle "rasterizer 0"
+ move
+ R1: circle "rasterizer 1"
+ move
+ Rd: circle "…"
+ move
+ Rn: circle "rasterizer n"
+] with .w at Tiles.e + (0.5,0)
+arrow dashed from Tiles.T0.e to Raster.R0.w
+arrow from Tiles.T1.e to Raster.R1.w
+arrow from Tiles.Td.e to Raster.Rd.w
+arrow from Tiles.Tn.e to Raster.Rn.w
+.ps 10
+.PE
+.B "Figure 3" :
+Raster task scheduling.
binary files a/doc/libgraphics.pdf b/doc/libgraphics.pdf differ
--- a/doc/libgraphics.ps
+++ b/doc/libgraphics.ps
@@ -191,7 +191,7 @@
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/radical [0 0 550 0]
- /radicalex [-50 0 500 0]
+ /radicalex [-50 0 500 1]
/parenleftex [-20 -170 0 0]
/integral [100 -50 500 0]
/infinity [10 -75 730 0]
@@ -202,6 +202,82 @@
/endash [7 90 650 0]
] def
%
+% Version 3.3.2 drawing procedures for dpost. Automatically pulled in when
+% needed.
+%
+
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+/savematrix matrix def
+
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+
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+ /x1 exch 2 div def
+ /savematrix savematrix currentmatrix def
+ neg exch x1 add exch translate
+ x1 y1 scale
+ 0 0 1 0 360
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+} bind def
+
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+ dy1 add neg exch dx1 add exch
+ dx1 dx1 mul dy1 dy1 mul add sqrt
+ dy1 dx1 neg atan
+ dy2 neg dx2 atan
+ inpath
+ {arc}+ {newpath arc stroke}+ ifelse
+} bind def
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+ /dx2 exch def
+ /dy1 exch def
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+ dy1 add neg exch dx1 add exch
+ dx1 dx1 mul dy1 dy1 mul add sqrt
+ dy1 dx1 neg atan
+ dy2 neg dx2 atan
+ inpath
+ {arcn}+ {newpath arcn stroke}+ ifelse
+} bind def
+
+/Ds {+ /y2 exch def
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+ /x1 exch def
+ /y0 exch def
+ /x0 exch def
+ x0 5 x1 mul add 6 div
+ y0 5 y1 mul add -6 div
+ x2 5 x1 mul add 6 div
+ y2 5 y1 mul add -6 div
+ x1 x2 add 2 div
+ y1 y2 add -2 div
+ inpath
+ {curveto}+ {newpath x0 x1 add 2 div y0 y1 add -2 div moveto curveto stroke}+ ifelse
+} bind def
+%
% Tries to round clipping path dimensions, as stored in array pagebbox, so they
% match one of the known sizes in the papersizes array. Lower left coordinates
% are always set to 0.
@@ -543,41 +619,504 @@
mark
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