0032208: Tests - refactor visualization tests to cover several graphic drivers

Removed testgrids 'bugs/vis' and '3rdparty'; tests have been redistributed across other grids.
Moved testgrid 'v3d/ivtk' into dedicated 'vtk/ivtk'.

Added testgrid 'vselect' dedicated to 3D viewer picking/selection functionality
and filled with tests from 'v3d/vertex', 'v3d/face' and similar groups.

Added testgrid 'opengl' dedicated to OpenGL driver low-level functionality (GLSL programs and similar)
and filled with tests from 'v3d/glsl', 'v3d/raytrace', '3rdparty/fonts', 'bugs/vis' (portion) and similar.

Added testgrid 'opengles3' dedicated to OpenGL ES 3.0 driver low-level functionality
and reusing tests from 'opengl' testgrid.
Subgroup 'opengles3/raytrace' is disabled on Windows, as Ray-Tracing currently requires OpenGL ES 3.2.
while ANGLE library implements only OpenGL ES 3.0.

Added testgrid 'opengles2' dedicated to OpenGL ES 2.0 driver low-level functionality
and reusing a limited subset of passing tests from 'opengl' testgrid.
Currently testgrid is activated only on Windows platform when using ANGLE library
(properietary OpenGL ES drivers do not allow creation of restricted 2.0 context).

Test cases have been cleaned out to put bug description into log,
to properly load necessary plugins and to explicitly dump viewer.

tests/opengl/data/shadows/buggy

@@ -0,0 +1,32 @@
+puts "========"
+puts "0032039: Visualization, TKOpenGl - implement simple shadow mapping for a direct light source"
+puts "Test shadow map from single directional light source on a buggy."
+puts "========"
+
+pload MODELING VISUALIZATION XDE OCAF
+if { $::tcl_platform(os) == "Darwin" } { vcaps -core }
+Close D -silent
+ReadGltf D [locate_data_file bug30691_Buggy.glb]
+vclear
+vinit View1
+vzbufftrihedron
+XDisplay -dispMode 1 D
+vfit
+vzoom 0.75
+box bb -500000 -500000 -10875 1000000 1000000 0 -preview
+vdisplay -dispMode 1 bb
+vaspects bb -material STONE
+vlight -change 0 -head 0 -dir -1 -1 -1 -castShadows 1
+
+if { ![string match "OpenGL ES 2.0*" [vglinfo VERSION]] && ![string match "OpenGL ES 3.0*" [vglinfo VERSION]] } {
+  vraytrace 1
+  vdump $::imagedir/${::casename}_raytrace.png
+}
+
+vraytrace 0
+vrenderparams -shadingModel phong
+vrenderparams -shadowMapResolution 2048
+vdump $::imagedir/${::casename}_phong.png
+
+vrenderparams -shadingModel pbr
+vdump $::imagedir/${::casename}_pbr.png

tests/opengl/data/shadows/dir1

@@ -0,0 +1,32 @@
+puts "========"
+puts "0032039: Visualization, TKOpenGl - implement simple shadow mapping for a direct light source"
+puts "Test shadow map from a single directional light source on a box geometry."
+puts "========"
+
+pload MODELING VISUALIZATION
+if { $::tcl_platform(os) == "Darwin" } { vcaps -core }
+box b 1 2 3
+box bb -5 -5 0 10 10 0 -preview
+vgldebug 1
+vcaps -core
+vcaps -vsync 0
+vclear
+vinit View1
+vrenderparams -shadingModel PHONG
+vdisplay -dispMode 1 b bb
+vaspects bb -material STONE
+vfit
+vlight -change 0 -castShadows 1 -direction 1 1 -1 -head 0
+
+if { ![string match "OpenGL ES 2.0*" [vglinfo VERSION]] && ![string match "OpenGL ES 3.0*" [vglinfo VERSION]] } {
+  vraytrace 1
+  vdump $::imagedir/${::casename}_raytrace.png
+}
+
+vraytrace 0
+vrenderparams -shadingModel phong
+vrenderparams -shadowMapBias 0.01
+vdump $::imagedir/${::casename}_phong.png
+
+vrenderparams -shadingModel pbr
+vdump $::imagedir/${::casename}_pbr.png

tests/opengl/data/shadows/dir2

@@ -0,0 +1,36 @@
+puts "========"
+puts "0032039: Visualization, TKOpenGl - implement simple shadow mapping for a direct light source"
+puts "Test shadow map from two directional light sources on a box geometry."
+puts "========"
+
+pload MODELING VISUALIZATION
+if { $::tcl_platform(os) == "Darwin" } { vcaps -core }
+box b 1 2 3
+box bb -5 -5 0 10 10 0 -preview
+vgldebug 1
+vcaps -core
+vcaps -vsync 0
+vclear
+vinit View1
+vrenderparams -shadingModel PHONG
+vdisplay -dispMode 1 b bb
+vaspects bb -material STONE
+vfit
+
+vlight -clear
+vlight -add AMBIENT
+vlight -add DIRECTIONAL -direction  0.2  0.2 -1 -head 0 -castShadows 1 -color RED
+vlight -add DIRECTIONAL -direction -0.2 -0.2 -1 -head 0 -castShadows 1 -color GREEN
+
+if { ![string match "OpenGL ES 2.0*" [vglinfo VERSION]] && ![string match "OpenGL ES 3.0*" [vglinfo VERSION]] } {
+  vraytrace 1
+  vdump $::imagedir/${::casename}_raytrace.png
+}
+
+vraytrace 0
+vrenderparams -shadingModel phong
+vrenderparams -shadowMapBias 0.01
+vdump $::imagedir/${::casename}_phong.png
+
+vrenderparams -shadingModel pbr
+vdump $::imagedir/${::casename}_pbr.png

tests/opengl/data/shadows/dir3

@@ -0,0 +1,34 @@
+puts "========"
+puts "0030640: Visualization, Graphic3d_Camera - add option creating Projection matrix with 0 to 1 depth range"
+puts "Test shadow map from a single directional light source on a box geometry."
+puts "========"
+
+pload MODELING VISUALIZATION
+if { $::tcl_platform(os) == "Darwin" } { vcaps -core }
+vcaps -depthZeroToOne 1
+box b 1 2 3
+box bb -5 -5 0 10 10 0 -preview
+vgldebug 1
+vcaps -core
+vcaps -vsync 0
+vclear
+vinit View1
+vrenderparams -shadingModel PHONG
+vdisplay -dispMode 1 b bb
+vaspects bb -material STONE
+vfit
+vselect 250 200
+vlight -change 0 -castShadows 1 -direction 1 1 -1 -head 0
+
+if { ![string match "OpenGL ES 2.0*" [vglinfo VERSION]] && ![string match "OpenGL ES 3.0*" [vglinfo VERSION]] } {
+  vraytrace 1
+  vdump $::imagedir/${::casename}_raytrace.png
+}
+
+vraytrace 0
+vrenderparams -shadingModel phong
+vrenderparams -shadowMapBias 0.01
+vdump $::imagedir/${::casename}_phong.png
+
+vrenderparams -shadingModel pbr
+vdump $::imagedir/${::casename}_pbr.png

tests/opengl/data/shadows/dirhead

@@ -0,0 +1,33 @@
+puts "========"
+puts "0032039: Visualization, TKOpenGl - implement simple shadow mapping for a direct light source"
+puts "Test shadow map from a single directional light source with headlight flag."
+puts "========"
+
+pload MODELING VISUALIZATION
+if { $::tcl_platform(os) == "Darwin" } { vcaps -core }
+box b 1 2 3
+box bb -5 -5 0 10 10 0 -preview
+vgldebug 1
+vcaps -core
+vcaps -vsync 0
+vclear
+vinit View1
+vcamera -persp
+vrenderparams -shadingModel PHONG
+vdisplay -dispMode 1 b bb
+vaspects bb -material STONE
+vfit
+vlight -change 0 -castShadows 1 -direction -0.2 0.2 -1 -head 1
+
+if { ![string match "OpenGL ES 2.0*" [vglinfo VERSION]] && ![string match "OpenGL ES 3.0*" [vglinfo VERSION]] } {
+  vraytrace 1
+  vdump $::imagedir/${::casename}_raytrace.png
+}
+
+vraytrace 0
+vrenderparams -shadingModel phong
+vrenderparams -shadowMapBias 0.01
+vdump $::imagedir/${::casename}_phong.png
+
+vrenderparams -shadingModel pbr
+vdump $::imagedir/${::casename}_pbr.png

tests/opengl/data/shadows/double_precision

@@ -0,0 +1,23 @@
+puts "========"
+puts "0032129: Visualization, TKOpenGl - shadowmap is broken for ZLayer having non-zero origin"
+puts "========"
+
+pload MODELING VISUALIZATION
+box b  0 0 1 100 200 300
+box bb -500 -500 0 1000 1000 0 -preview
+vinit View1
+vrenderparams -shadingModel PHONG
+vdisplay -dispMode 1 b bb
+vaspects bb -material STONE
+vfit
+vlight -change 0 -castShadows 1 -head 0 -dir 1 1 -1
+vdump $::imagedir/${::casename}_1.png
+vzlayer DEFAULT -origin 200 0 0
+vdump $::imagedir/${::casename}_2.png
+
+vlocation b  -setLocation 1000000000 0 0
+vlocation bb -setLocation 1000000000 0 0
+vfit
+vdump $::imagedir/${::casename}_3.png
+vzlayer DEFAULT   -origin 1000000000 0 0
+vdump $::imagedir/${::casename}_4.png