PrusaSlicer-NonPlainar/resources/shaders/140/flat_clip.vs

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#version 140
uniform mat4 view_model_matrix;
uniform mat4 projection_matrix;
uniform mat4 volume_world_matrix;
// Clipping plane, x = min z, y = max z. Used by the FFF and SLA previews to clip with a top / bottom plane.
uniform vec2 z_range;
// Clipping plane - general orientation. Used by the SLA gizmo.
uniform vec4 clipping_plane;
in vec3 v_position;
out vec3 clipping_planes_dots;
void main()
{
// Fill in the scalars for fragment shader clipping. Fragments with any of these components lower than zero are discarded.
vec4 world_pos = volume_world_matrix * vec4(v_position, 1.0);
clipping_planes_dots = vec3(dot(world_pos, clipping_plane), world_pos.z - z_range.x, z_range.y - world_pos.z);
gl_Position = projection_matrix * view_model_matrix * vec4(v_position, 1.0);
}