24 lines
785 B
Plaintext
24 lines
785 B
Plaintext
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#version 110
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const vec3 ZERO = vec3(0.0, 0.0, 0.0);
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uniform mat4 volume_world_matrix;
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// Clipping plane, x = min z, y = max z. Used by the FFF and SLA previews to clip with a top / bottom plane.
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uniform vec2 z_range;
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// Clipping plane - general orientation. Used by the SLA gizmo.
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uniform vec4 clipping_plane;
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varying vec3 clipping_planes_dots;
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varying vec4 model_pos;
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void main()
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{
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model_pos = gl_Vertex;
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// Point in homogenous coordinates.
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vec4 world_pos = volume_world_matrix * gl_Vertex;
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gl_Position = ftransform();
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// Fill in the scalars for fragment shader clipping. Fragments with any of these components lower than zero are discarded.
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clipping_planes_dots = vec3(dot(world_pos, clipping_plane), world_pos.z - z_range.x, z_range.y - world_pos.z);
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}
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