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occt/tests/v3d/glsl/phong_couple
kgv 8e0a2b19ab 0029074: Visualization, TKOpenGl - support Geometry Shader definition
Graphic3d_TypeOfShaderObject enumeration has been extended by Geometry shader object type.
OpenGl_ShaderProgram::Initialize() processes new shader object types when supported by OpenGL version.
Declarations.glsl has been fixed so that occFragColor is defined only for
Fragment Shader object only (by handling new FRAGMENT_SHADER macros).

Improved documentation of Graphic3d_ArrayOfPrimitives class.

vshader Draw Harness command has been extended to support definition
of Shader Object types other than Vertex and Fragment shader.
2017-09-22 11:51:36 +03:00

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puts "========"
puts "Per-pixel lighting using GLSL program (Phong shading)"
puts "========"
# import model
restore [locate_data_file occ/fuse.brep] f
tclean f
box b 2 0 0 1 0.5 0.25
# draw box
vclear
vclose ALL
vinit View1
vdefaults -absDefl 0.5
vsetdispmode 1
vaxo
vdisplay f
vfit
vrotate -0.5 0.0 0.0
vdisplay b
vfit
# take snapshot with fixed pipeline
vdump $::imagedir/${::casename}_OFF.png
vshaderprog f phong
vshaderprog b phong
vshaderprog b off
vrotate -0.2 0.0 0.0
vmoveto 100 100
vdump $::imagedir/${::casename}_ph1.png