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https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-04 18:06:22 +03:00
633084b809
Image_PixMap has been extended to support definition of 3D bitmap (as an array of 2D slices). Graphic3d_TypeOfTexture enumeration values have been renamed to include full enum prefix. Added Graphic3d_TypeOfTexture_3D redirecting to GL_TEXTURE_3D. OpenGl_Texture::Init() has been extended to allow initialization of 3D texture. Graphic3d_Texture2Dmanual merged into Graphic3d_Texture2D and marked as deprecated alias. Graphic3d_TOT_2D_MIPMAP has been deprecated in favor of dedicated Graphic3d_TextureRoot::SetMipMaps(). Added Graphic3d_Texture3D class. vtexture - added argument -3d for uploading 3D texture.
61 lines
1.7 KiB
Plaintext
61 lines
1.7 KiB
Plaintext
puts "========"
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puts "0032862: Visualization, Graphic3d_TextureMap - add 3D texture definition"
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puts "========"
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pload MODELING VISUALIZATION
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set aTex1 [locate_data_file SF_CubeMap_posx.jpg]
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set aTex2 [locate_data_file SF_CubeMap_negx.jpg]
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set aTex3 [locate_data_file SF_CubeMap_posy.jpg]
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set aTex4 [locate_data_file SF_CubeMap_negy.jpg]
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set aTex5 [locate_data_file SF_CubeMap_posz.jpg]
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set aTex6 [locate_data_file SF_CubeMap_negz.jpg]
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set aShaderVert "
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THE_SHADER_OUT vec3 TexCoord;
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uniform float uSlice;
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void main() {
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float aNbSlices = 6.0;
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TexCoord = occVertex.xyz;
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if (uSlice >= 0.0) { TexCoord = vec3(occTexCoord.xy, uSlice * 1.0 / aNbSlices + 0.5 / aNbSlices); }
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if (occTextureTrsf_Scale().y < 0.0) { TexCoord.y = 1.0 - TexCoord.y; }
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gl_Position = occProjectionMatrix * occWorldViewMatrix * occModelWorldMatrix * occVertex;
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}"
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set aShaderFrag "
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#ifdef GL_ES
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uniform mediump sampler3D occSampler0;
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#else
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uniform sampler3D occSampler0;
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#endif
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THE_SHADER_IN vec3 TexCoord;
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void main() {
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occFragColor = occTexture3D(occSampler0, TexCoord);
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}"
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set aGlslVer "#version 110"
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if { [vdriver -default] == "TKOpenGles" } { set aGlslVer "#version 300 es" }
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# draw a box
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box b 1.0 1.0 1.0
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vclear
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vclose ALL
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vinit View1
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vaxo
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vdisplay -dispMode 1 b
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vfit
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vrotate 0.2 0.0 0.0
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# load 3D texture
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vtexture b -3d $aTex1 $aTex2 $aTex3 $aTex4 $aTex5 $aTex6
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# texture slices
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foreach aSliceIter {0 1 2 3 4 5} {
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vshaderprog b -vert $aShaderVert -frag $aShaderFrag -defaultSampler 0 -uniform "uSlice" ${aSliceIter} -header "$aGlslVer"
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vdump $::imagedir/${::casename}_s${aSliceIter}.png
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}
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# texture interpolation
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vshaderprog b -vert $aShaderVert -frag $aShaderFrag -defaultSampler 0 -uniform "uSlice" -1 -header "$aGlslVer"
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vdump $::imagedir/${::casename}_def.png
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