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/*
* Vertex Shader for dashed lines with 3D coordinates,
* with uniform multi-colors or uniform single-color, and unary thickness.
*
* Dashed is performed in screen space.
*/
uniform mat4 ModelViewProjectionMatrix;
#ifdef USE_WORLD_CLIP_PLANES
uniform mat4 ModelMatrix;
#endif
uniform vec4 color;
uniform vec2 viewport_size;
in vec3 pos;
flat out vec4 color_vert;
/* We leverage hardware interpolation to compute distance along the line. */
noperspective out vec2 stipple_pos; /* In screen space */
flat out vec2 stipple_start; /* In screen space */
void main()
{
vec4 pos_4d = vec4(pos, 1.0);
gl_Position = ModelViewProjectionMatrix * pos_4d;
stipple_start = stipple_pos = viewport_size * 0.5 * (gl_Position.xy / gl_Position.w);
color_vert = color;
#ifdef USE_WORLD_CLIP_PLANES
world_clip_planes_calc_clip_distance((ModelMatrix * pos_4d).xyz);
#endif
}
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