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#pragma BLENDER_REQUIRE(common_view_clipping_lib.glsl)
#pragma BLENDER_REQUIRE(common_view_lib.glsl)
void discard_vert()
{
/* We set the vertex at the camera origin to generate 0 fragments. */
gl_Position = vec4(0.0, 0.0, -3e36, 0.0);
}
#ifdef USE_POINTS
# define gp_colorUnselect colorGpencilVertex
# define gp_colorSelect colorGpencilVertexSelect
#else
# define gp_colorUnselect gpEditColor
# define gp_colorSelect (hideSelect ? gp_colorUnselect : colorGpencilVertexSelect)
#endif
vec3 weight_to_rgb(float t)
{
if (t < 0.0) {
/* No weight */
return gp_colorUnselect.rgb;
}
else if (t > 1.0) {
/* Error color */
return vec3(1.0, 0.0, 1.0);
}
else {
return texture(weightTex, t).rgb;
}
}
void main()
{
GPU_INTEL_VERTEX_SHADER_WORKAROUND
vec3 world_pos = point_object_to_world(pos);
gl_Position = point_world_to_ndc(world_pos);
bool is_multiframe = (vflag & GP_EDIT_MULTIFRAME) != 0u;
bool is_stroke_sel = (vflag & GP_EDIT_STROKE_SELECTED) != 0u;
bool is_point_sel = (vflag & GP_EDIT_POINT_SELECTED) != 0u;
bool is_point_dimmed = (vflag & GP_EDIT_POINT_DIMMED) != 0u;
if (doWeightColor) {
finalColor.rgb = weight_to_rgb(weight);
finalColor.a = gpEditOpacity;
}
else {
finalColor = (is_point_sel) ? gp_colorSelect : gp_colorUnselect;
finalColor.a *= gpEditOpacity;
}
#ifdef USE_POINTS
gl_PointSize = sizeVertexGpencil * 2.0;
if (is_point_dimmed) {
finalColor.rgb = clamp(gp_colorUnselect.rgb + vec3(0.3), 0.0, 1.0);
}
if (doStrokeEndpoints && !doWeightColor) {
bool is_stroke_start = (vflag & GP_EDIT_STROKE_START) != 0u;
bool is_stroke_end = (vflag & GP_EDIT_STROKE_END) != 0u;
if (is_stroke_start) {
gl_PointSize *= 2.0;
finalColor.rgb = vec3(0.0, 1.0, 0.0);
}
else if (is_stroke_end) {
gl_PointSize *= 1.5;
finalColor.rgb = vec3(1.0, 0.0, 0.0);
}
}
if ((!is_stroke_sel && !doWeightColor) || (!doMultiframe && is_multiframe)) {
discard_vert();
}
#endif
/* Discard unwanted padding vertices. */
if (ma == -1 || (is_multiframe && !doMultiframe)) {
discard_vert();
}
view_clipping_distances(world_pos);
}
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