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https://github.com/Open-Cascade-SAS/OCCT.git
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be39f6f6be
Port of commit 1e1584357 adapted to the new source layout and modern NCollection_Mat3/NCollection_Mat4 types. - Graphic3d_ShaderVariable: register NCollection_Mat3<float> and NCollection_Mat4<float> type IDs; add template instantiations and Graphic3d_UniformMat3/Graphic3d_UniformMat4 typedefs. - Graphic3d_ShaderProgram: add PushVariableMat3() and PushVariableMat4() convenience methods. - OpenGl_ShaderProgram: add single-value SetUniform() for mat3 (wrapping glUniformMatrix3fv); register mat3/mat4 in OpenGl_VariableSetterSelector so custom uniforms are dispatched. - ViewerTest (vshader command): add -vec2, -vec3, -vec4, -mat3, -mat4 argument parsing for setting custom uniform variables from Draw Harness. - Add Draw Harness test exercising the new uniform types.
66 lines
1.9 KiB
Plaintext
66 lines
1.9 KiB
Plaintext
puts "========"
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puts "Test custom uniform variables: -vec2, -vec3, -vec4, -mat3, -mat4"
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puts "========"
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pload MODELING VISUALIZATION
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# draw a box
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box b 1 2 3
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vclear
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vclose ALL
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vinit View1
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vsetdispmode 1
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vaxo
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vdisplay b
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vfit
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vrotate 0.2 0.0 0.0
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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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# vertex shader applying a mat4 uniform transform and passing a vec4 color to fragment
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set aShaderVert "
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uniform mat4 uModelTrsf;
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uniform mat3 uNormTrsf;
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uniform vec4 uColor;
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uniform vec3 uLightDir;
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uniform vec2 uScale;
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THE_SHADER_OUT vec4 vColor;
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THE_SHADER_OUT vec3 vNormal;
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void main() {
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vec4 aPos = uModelTrsf * occVertex;
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aPos.xy *= uScale;
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vNormal = normalize(uNormTrsf * occNormal.xyz);
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vColor = uColor;
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gl_Position = occProjectionMatrix * occWorldViewMatrix * aPos;
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}"
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# fragment shader using the passed color and simple diffuse lighting
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set aShaderFrag "
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uniform vec3 uLightDir;
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THE_SHADER_IN vec4 vColor;
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THE_SHADER_IN vec3 vNormal;
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void main() {
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float aNdotL = max(dot(normalize(vNormal), normalize(uLightDir)), 0.2);
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occSetFragColor(vec4(vColor.rgb * aNdotL, vColor.a));
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}"
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# identity mat4 (row-major: 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1)
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# identity mat3 (row-major: 1 0 0 0 1 0 0 0 1)
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vshaderprog b -vert $aShaderVert -frag $aShaderFrag -header "$aGlslVer" \
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-mat4 uModelTrsf 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 \
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-mat3 uNormTrsf 1 0 0 0 1 0 0 0 1 \
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-vec4 uColor 0.2 0.6 1.0 1.0 \
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-vec3 uLightDir 0.0 0.0 1.0 \
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-vec2 uScale 1.0 1.0
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vdump $::imagedir/${::casename}_identity.png
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# apply a non-identity mat4 (translation by 0.5 in X)
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vshaderprog b -vert $aShaderVert -frag $aShaderFrag -header "$aGlslVer" \
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-mat4 uModelTrsf 1 0 0 0.5 0 1 0 0 0 0 1 0 0 0 0 1 \
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-mat3 uNormTrsf 1 0 0 0 1 0 0 0 1 \
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-vec4 uColor 1.0 0.4 0.2 1.0 \
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-vec3 uLightDir 1.0 1.0 1.0 \
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-vec2 uScale 0.8 0.8
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vdump $::imagedir/${::casename}_translated.png
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