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[MSDF] Add font variation to control outline roundness. #109629

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[MSDF] Add font variation to control outline roundness. #109629

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3 changes: 3 additions & 0 deletions doc/classes/BaseMaterial3D.xml
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Expand Up @@ -297,6 +297,9 @@
<member name="msdf_pixel_range" type="float" setter="set_msdf_pixel_range" getter="get_msdf_pixel_range" default="4.0">
The width of the range around the shape between the minimum and maximum representable signed distance.
</member>
<member name="msdf_rounded_outline" type="float" setter="set_msdf_rounded_outline" getter="get_msdf_rounded_outline" default="1.0">
MSDF outline rounding factor. [code]0.0[/code] is a sharp outline, while [code]1.0[/code] is a rounded outline. Values between result in a slightly rounded outline.
</member>
<member name="no_depth_test" type="bool" setter="set_flag" getter="get_flag" default="false">
If [code]true[/code], depth testing is disabled and the object will be drawn in render order.
</member>
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1 change: 1 addition & 0 deletions doc/classes/CanvasItem.xml
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Expand Up @@ -206,6 +206,7 @@
<param index="4" name="outline" type="float" default="0.0" />
<param index="5" name="pixel_range" type="float" default="4.0" />
<param index="6" name="scale" type="float" default="1.0" />
<param index="7" name="msdf_rounded_outline" type="float" default="1.0" />
<description>
Draws a textured rectangle region of the multichannel signed distance field texture at a given position, optionally modulated by a color. The [param rect] is defined in local space. See [member FontFile.multichannel_signed_distance_field] for more information and caveats about MSDF font rendering.
If [param outline] is positive, each alpha channel value of pixel in region is set to maximum value of true distance in the [param outline] radius.
Expand Down
1 change: 1 addition & 0 deletions doc/classes/Font.xml
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Expand Up @@ -125,6 +125,7 @@
<param index="6" name="spacing_space" type="int" default="0" />
<param index="7" name="spacing_glyph" type="int" default="0" />
<param index="8" name="baseline_offset" type="float" default="0.0" />
<param index="9" name="msdf_rounded_outline" type="float" default="1.0" />
<description>
Returns [TextServer] RID of the font cache for specific variation.
</description>
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15 changes: 15 additions & 0 deletions doc/classes/FontFile.xml
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Expand Up @@ -138,6 +138,13 @@
Returns extra baseline offset (as a fraction of font height).
</description>
</method>
<method name="get_extra_msdf_rounded_outline" qualifiers="const">
<return type="float" />
<param index="0" name="cache_index" type="int" />
<description>
Returns the MSDF outline rounding factor.
</description>
</method>
<method name="get_extra_spacing" qualifiers="const">
<return type="int" />
<param index="0" name="cache_index" type="int" />
Expand Down Expand Up @@ -460,6 +467,14 @@
Sets extra baseline offset (as a fraction of font height).
</description>
</method>
<method name="set_extra_msdf_rounded_outline">
<return type="void" />
<param index="0" name="cache_index" type="int" />
<param index="1" name="msdf_rounded_outline" type="float" />
<description>
Sets the MSDF outline rounding factor. [code]0.0[/code] is a sharp outline, while [code]1.0[/code] is a rounded outline. Values between result in a slightly rounded outline.
</description>
</method>
<method name="set_extra_spacing">
<return type="void" />
<param index="0" name="cache_index" type="int" />
Expand Down
3 changes: 3 additions & 0 deletions doc/classes/FontVariation.xml
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Expand Up @@ -49,6 +49,9 @@
<member name="baseline_offset" type="float" setter="set_baseline_offset" getter="get_baseline_offset" default="0.0">
Extra baseline offset (as a fraction of font height).
</member>
<member name="msdf_rounded_outline" type="float" setter="set_msdf_rounded_outline" getter="get_msdf_rounded_outline" default="1.0">
MSDF outline rounding factor. [code]0.0[/code] is a sharp outline, while [code]1.0[/code] is a rounded outline. Values between result in a slightly rounded outline.
</member>
<member name="opentype_features" type="Dictionary" setter="set_opentype_features" getter="get_opentype_features" default="{}">
A set of OpenType feature tags. More info: [url=https://docs.microsoft.com/en-us/typography/opentype/spec/featuretags]OpenType feature tags[/url].
</member>
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1 change: 1 addition & 0 deletions doc/classes/RenderingServer.xml
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Expand Up @@ -283,6 +283,7 @@
<param index="5" name="outline_size" type="int" default="0" />
<param index="6" name="px_range" type="float" default="1.0" />
<param index="7" name="scale" type="float" default="1.0" />
<param index="8" name="msdf_rounded_outline" type="float" default="1.0" />
<description>
See also [method CanvasItem.draw_msdf_texture_rect_region].
</description>
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15 changes: 15 additions & 0 deletions doc/classes/TextServer.xml
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Expand Up @@ -371,6 +371,13 @@
Returns the width of the range around the shape between the minimum and maximum representable signed distance.
</description>
</method>
<method name="font_get_msdf_rounded_outline" qualifiers="const">
<return type="float" />
<param index="0" name="font_rid" type="RID" />
<description>
Returns the MSDF outline rounding factor.
</description>
</method>
<method name="font_get_msdf_size" qualifiers="const">
<return type="int" />
<param index="0" name="font_rid" type="RID" />
Expand Down Expand Up @@ -895,6 +902,14 @@
Sets the width of the range around the shape between the minimum and maximum representable signed distance.
</description>
</method>
<method name="font_set_msdf_rounded_outline">
<return type="void" />
<param index="0" name="font_rid" type="RID" />
<param index="1" name="msdf_rounded_outline" type="float" />
<description>
Sets the MSDF outline rounding factor. [code]0.0[/code] is a sharp outline, while [code]1.0[/code] is a rounded outline. Values between result in a slightly rounded outline.
</description>
</method>
<method name="font_set_msdf_size">
<return type="void" />
<param index="0" name="font_rid" type="RID" />
Expand Down
15 changes: 15 additions & 0 deletions doc/classes/TextServerExtension.xml
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Expand Up @@ -349,6 +349,13 @@
Returns the width of the range around the shape between the minimum and maximum representable signed distance.
</description>
</method>
<method name="_font_get_msdf_rounded_outline" qualifiers="virtual const">
<return type="float" />
<param index="0" name="font_rid" type="RID" />
<description>
Returns the MSDF outline rounding factor.
</description>
</method>
<method name="_font_get_msdf_size" qualifiers="virtual const">
<return type="int" />
<param index="0" name="font_rid" type="RID" />
Expand Down Expand Up @@ -879,6 +886,14 @@
Sets the width of the range around the shape between the minimum and maximum representable signed distance.
</description>
</method>
<method name="_font_set_msdf_rounded_outline" qualifiers="virtual">
<return type="void" />
<param index="0" name="font_rid" type="RID" />
<param index="1" name="msdf_rounded_outline" type="float" />
<description>
Sets the MSDF outline rounding factor. [code]0.0[/code] is a sharp outline, while [code]1.0[/code] is a rounded outline. Values between result in a slightly rounded outline.
</description>
</method>
<method name="_font_set_msdf_size" qualifiers="virtual">
<return type="void" />
<param index="0" name="font_rid" type="RID" />
Expand Down
2 changes: 1 addition & 1 deletion drivers/gles3/rasterizer_canvas_gles3.cpp
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Expand Up @@ -1000,7 +1000,7 @@ void RasterizerCanvasGLES3::_record_item_commands(const Item *p_item, RID p_rend
state.instance_data_array[r_index].flags |= INSTANCE_FLAGS_USE_MSDF;
state.instance_data_array[r_index].msdf[0] = rect->px_range; // Pixel range.
state.instance_data_array[r_index].msdf[1] = rect->outline; // Outline size.
state.instance_data_array[r_index].msdf[2] = 0.f; // Reserved.
state.instance_data_array[r_index].msdf[2] = rect->msdf_rounded_outline; // Outline true distance blending.
state.instance_data_array[r_index].msdf[3] = 0.f; // Reserved.
} else if (rect->flags & CANVAS_RECT_LCD) {
state.instance_data_array[r_index].flags |= INSTANCE_FLAGS_USE_LCD;
Expand Down
4 changes: 3 additions & 1 deletion drivers/gles3/shaders/canvas.glsl
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Expand Up @@ -601,6 +601,8 @@ void main() {
if (bool(read_draw_data_flags & INSTANCE_FLAGS_USE_MSDF)) {
float px_range = read_draw_data_ninepatch_margins.x;
float outline_thickness = read_draw_data_ninepatch_margins.y;
float msdf_rounded_outline = read_draw_data_ninepatch_margins.z;
//float reserved = read_draw_data_ninepatch_margins.w;

vec4 msdf_sample = texture(color_texture, uv);
vec2 msdf_size = vec2(textureSize(color_texture, 0));
Expand All @@ -610,7 +612,7 @@ void main() {

if (outline_thickness > 0.0) {
float cr = clamp(outline_thickness, 0.0, (px_range / 2.0) - 1.0) / px_range;
d = min(d, msdf_sample.a);
d = mix(d, msdf_sample.a, msdf_rounded_outline);
float a = clamp((d - 0.5 + cr) * px_size, 0.0, 1.0);
color.a = a * color.a;
} else {
Expand Down
2 changes: 1 addition & 1 deletion misc/extension_api_validation/4.1-stable_4.2-stable/GH-80954.txt
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@@ -1,5 +1,5 @@
GH-80954
--------
Validate extension JSON: Error: Field 'classes/Font/methods/find_variation/arguments': size changed value in new API, from 4 to 9.
Validate extension JSON: Error: Field 'classes/Font/methods/find_variation/arguments': size changed value in new API, from 4 to 10.

Added optional arguments. Compatibility method registered.
2 changes: 1 addition & 1 deletion misc/extension_api_validation/4.2-stable_4.3-stable/GH-87668.txt
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@@ -1,5 +1,5 @@
GH-87668
--------
Validate extension JSON: Error: Field 'classes/Font/methods/find_variation/arguments': size changed value in new API, from 8 to 9.
Validate extension JSON: Error: Field 'classes/Font/methods/find_variation/arguments': size changed value in new API, from 8 to 10.

Added optional "baseline_offset" argument. Compatibility method registered.
7 changes: 7 additions & 0 deletions misc/extension_api_validation/4.5-stable/GH-109629.txt
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@@ -0,0 +1,7 @@
GH-109629
---------
Validate extension JSON: Error: Field 'classes/CanvasItem/methods/draw_msdf_texture_rect_region/arguments': size changed value in new API, from 7 to 8.
Validate extension JSON: Error: Field 'classes/Font/methods/find_variation/arguments': size changed value in new API, from 9 to 10.
Validate extension JSON: Error: Field 'classes/RenderingServer/methods/canvas_item_add_msdf_texture_rect_region/arguments': size changed value in new API, from 8 to 9.

Optional argument added. Compatibility methods registered.
35 changes: 33 additions & 2 deletions modules/text_server_adv/text_server_adv.cpp
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Expand Up @@ -2738,6 +2738,37 @@ double TextServerAdvanced::_font_get_baseline_offset(const RID &p_font_rid) cons
}
}

void TextServerAdvanced::_font_set_msdf_rounded_outline(const RID &p_font_rid, double p_msdf_rounded_outline) {
FontAdvancedLinkedVariation *fdv = font_var_owner.get_or_null(p_font_rid);
if (fdv) {
if (fdv->msdf_rounded_outline != p_msdf_rounded_outline) {
fdv->msdf_rounded_outline = p_msdf_rounded_outline;
}
} else {
FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
ERR_FAIL_NULL(fd);

MutexLock lock(fd->mutex);
if (fd->msdf_rounded_outline != p_msdf_rounded_outline) {
_font_clear_cache(fd);
fd->msdf_rounded_outline = p_msdf_rounded_outline;
}
}
}

double TextServerAdvanced::_font_get_msdf_rounded_outline(const RID &p_font_rid) const {
FontAdvancedLinkedVariation *fdv = font_var_owner.get_or_null(p_font_rid);
if (fdv) {
return fdv->msdf_rounded_outline;
} else {
FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
ERR_FAIL_NULL_V(fd, 0.0);

MutexLock lock(fd->mutex);
return fd->msdf_rounded_outline;
}
}

void TextServerAdvanced::_font_set_transform(const RID &p_font_rid, const Transform2D &p_transform) {
FontAdvanced *fd = _get_font_data(p_font_rid);
ERR_FAIL_NULL(fd);
Expand Down Expand Up @@ -4061,7 +4092,7 @@ void TextServerAdvanced::_font_draw_glyph(const RID &p_font_rid, const RID &p_ca
Point2 cpos = p_pos;
cpos += fgl.rect.position * (double)p_size / (double)fd->msdf_source_size;
Size2 csize = fgl.rect.size * (double)p_size / (double)fd->msdf_source_size;
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, 0, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size);
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, 0, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size, _font_get_msdf_rounded_outline(p_font_rid));
} else {
Point2 cpos = p_pos;
double scale = _font_get_scale(p_font_rid, p_size) / oversampling_factor;
Expand Down Expand Up @@ -4203,7 +4234,7 @@ void TextServerAdvanced::_font_draw_glyph_outline(const RID &p_font_rid, const R
Point2 cpos = p_pos;
cpos += fgl.rect.position * (double)p_size / (double)fd->msdf_source_size;
Size2 csize = fgl.rect.size * (double)p_size / (double)fd->msdf_source_size;
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, p_outline_size, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size);
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, p_outline_size, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size, _font_get_msdf_rounded_outline(p_font_rid));
} else {
Point2 cpos = p_pos;
double scale = _font_get_scale(p_font_rid, p_size) / oversampling_factor;
Expand Down
10 changes: 9 additions & 1 deletion modules/text_server_adv/text_server_adv.h
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Expand Up @@ -323,6 +323,7 @@ class TextServerAdvanced : public TextServerExtension {
RID base_font;
int extra_spacing[4] = { 0, 0, 0, 0 };
double baseline_offset = 0.0;
double msdf_rounded_outline = 1.0;
};

struct FontAdvanced {
Expand Down Expand Up @@ -354,6 +355,7 @@ class TextServerAdvanced : public TextServerExtension {
int stretch = 100;
int extra_spacing[4] = { 0, 0, 0, 0 };
double baseline_offset = 0.0;
double msdf_rounded_outline = 1.0;

HashMap<Vector2i, FontForSizeAdvanced *> cache;

Expand Down Expand Up @@ -620,9 +622,10 @@ class TextServerAdvanced : public TextServerExtension {
Transform2D transform;
int extra_spacing[4] = { 0, 0, 0, 0 };
double baseline_offset = 0.0;
double msdf_rounded_outline = 1.0;

bool operator==(const SystemFontKey &p_b) const {
return (font_name == p_b.font_name) && (antialiasing == p_b.antialiasing) && (italic == p_b.italic) && (disable_embedded_bitmaps == p_b.disable_embedded_bitmaps) && (mipmaps == p_b.mipmaps) && (msdf == p_b.msdf) && (force_autohinter == p_b.force_autohinter) && (weight == p_b.weight) && (stretch == p_b.stretch) && (msdf_range == p_b.msdf_range) && (msdf_source_size == p_b.msdf_source_size) && (fixed_size == p_b.fixed_size) && (hinting == p_b.hinting) && (subpixel_positioning == p_b.subpixel_positioning) && (keep_rounding_remainders == p_b.keep_rounding_remainders) && (variation_coordinates == p_b.variation_coordinates) && (embolden == p_b.embolden) && (transform == p_b.transform) && (extra_spacing[SPACING_TOP] == p_b.extra_spacing[SPACING_TOP]) && (extra_spacing[SPACING_BOTTOM] == p_b.extra_spacing[SPACING_BOTTOM]) && (extra_spacing[SPACING_SPACE] == p_b.extra_spacing[SPACING_SPACE]) && (extra_spacing[SPACING_GLYPH] == p_b.extra_spacing[SPACING_GLYPH]) && (baseline_offset == p_b.baseline_offset);
return (font_name == p_b.font_name) && (antialiasing == p_b.antialiasing) && (italic == p_b.italic) && (disable_embedded_bitmaps == p_b.disable_embedded_bitmaps) && (mipmaps == p_b.mipmaps) && (msdf == p_b.msdf) && (force_autohinter == p_b.force_autohinter) && (weight == p_b.weight) && (stretch == p_b.stretch) && (msdf_range == p_b.msdf_range) && (msdf_source_size == p_b.msdf_source_size) && (fixed_size == p_b.fixed_size) && (hinting == p_b.hinting) && (subpixel_positioning == p_b.subpixel_positioning) && (keep_rounding_remainders == p_b.keep_rounding_remainders) && (variation_coordinates == p_b.variation_coordinates) && (embolden == p_b.embolden) && (transform == p_b.transform) && (extra_spacing[SPACING_TOP] == p_b.extra_spacing[SPACING_TOP]) && (extra_spacing[SPACING_BOTTOM] == p_b.extra_spacing[SPACING_BOTTOM]) && (extra_spacing[SPACING_SPACE] == p_b.extra_spacing[SPACING_SPACE]) && (extra_spacing[SPACING_GLYPH] == p_b.extra_spacing[SPACING_GLYPH]) && (baseline_offset == p_b.baseline_offset) && (msdf_rounded_outline == p_b.msdf_rounded_outline);
}

SystemFontKey(const String &p_font_name, bool p_italic, int p_weight, int p_stretch, RID p_font, const TextServerAdvanced *p_fb) {
Expand All @@ -649,6 +652,7 @@ class TextServerAdvanced : public TextServerExtension {
extra_spacing[SPACING_SPACE] = p_fb->_font_get_spacing(p_font, SPACING_SPACE);
extra_spacing[SPACING_GLYPH] = p_fb->_font_get_spacing(p_font, SPACING_GLYPH);
baseline_offset = p_fb->_font_get_baseline_offset(p_font);
msdf_rounded_outline = p_fb->_font_get_msdf_rounded_outline(p_font);
}
};

Expand Down Expand Up @@ -681,6 +685,7 @@ class TextServerAdvanced : public TextServerExtension {
hash = hash_murmur3_one_32(p_a.extra_spacing[SPACING_SPACE], hash);
hash = hash_murmur3_one_32(p_a.extra_spacing[SPACING_GLYPH], hash);
hash = hash_murmur3_one_double(p_a.baseline_offset, hash);
hash = hash_murmur3_one_double(p_a.msdf_rounded_outline, hash);
return hash_fmix32(hash_murmur3_one_32(((int)p_a.mipmaps) | ((int)p_a.msdf << 1) | ((int)p_a.italic << 2) | ((int)p_a.force_autohinter << 3) | ((int)p_a.hinting << 4) | ((int)p_a.subpixel_positioning << 8) | ((int)p_a.antialiasing << 12) | ((int)p_a.disable_embedded_bitmaps << 14) | ((int)p_a.keep_rounding_remainders << 15), hash));
}
};
Expand Down Expand Up @@ -919,6 +924,9 @@ class TextServerAdvanced : public TextServerExtension {
MODBIND2(font_set_baseline_offset, const RID &, double);
MODBIND1RC(double, font_get_baseline_offset, const RID &);

MODBIND2(font_set_msdf_rounded_outline, const RID &, double);
MODBIND1RC(double, font_get_msdf_rounded_outline, const RID &);

MODBIND2(font_set_transform, const RID &, const Transform2D &);
MODBIND1RC(Transform2D, font_get_transform, const RID &);

Expand Down
35 changes: 33 additions & 2 deletions modules/text_server_fb/text_server_fb.cpp
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Expand Up @@ -1691,6 +1691,37 @@ double TextServerFallback::_font_get_baseline_offset(const RID &p_font_rid) cons
}
}

void TextServerFallback::_font_set_msdf_rounded_outline(const RID &p_font_rid, double p_msdf_rounded_outline) {
FontFallbackLinkedVariation *fdv = font_var_owner.get_or_null(p_font_rid);
if (fdv) {
if (fdv->msdf_rounded_outline != p_msdf_rounded_outline) {
fdv->msdf_rounded_outline = p_msdf_rounded_outline;
}
} else {
FontFallback *fd = font_owner.get_or_null(p_font_rid);
ERR_FAIL_NULL(fd);

MutexLock lock(fd->mutex);
if (fd->msdf_rounded_outline != p_msdf_rounded_outline) {
_font_clear_cache(fd);
fd->msdf_rounded_outline = p_msdf_rounded_outline;
}
}
}

double TextServerFallback::_font_get_msdf_rounded_outline(const RID &p_font_rid) const {
FontFallbackLinkedVariation *fdv = font_var_owner.get_or_null(p_font_rid);
if (fdv) {
return fdv->msdf_rounded_outline;
} else {
FontFallback *fd = font_owner.get_or_null(p_font_rid);
ERR_FAIL_NULL_V(fd, 0.0);

MutexLock lock(fd->mutex);
return fd->msdf_rounded_outline;
}
}

void TextServerFallback::_font_set_transform(const RID &p_font_rid, const Transform2D &p_transform) {
FontFallback *fd = _get_font_data(p_font_rid);
ERR_FAIL_NULL(fd);
Expand Down Expand Up @@ -2952,7 +2983,7 @@ void TextServerFallback::_font_draw_glyph(const RID &p_font_rid, const RID &p_ca
Point2 cpos = p_pos;
cpos += fgl.rect.position * (double)p_size / (double)fd->msdf_source_size;
Size2 csize = fgl.rect.size * (double)p_size / (double)fd->msdf_source_size;
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, 0, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size);
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, 0, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size, _font_get_msdf_rounded_outline(p_font_rid));
} else {
Point2 cpos = p_pos;
double scale = _font_get_scale(p_font_rid, p_size) / oversampling_factor;
Expand Down Expand Up @@ -3094,7 +3125,7 @@ void TextServerFallback::_font_draw_glyph_outline(const RID &p_font_rid, const R
Point2 cpos = p_pos;
cpos += fgl.rect.position * (double)p_size / (double)fd->msdf_source_size;
Size2 csize = fgl.rect.size * (double)p_size / (double)fd->msdf_source_size;
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, p_outline_size, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size);
RenderingServer::get_singleton()->canvas_item_add_msdf_texture_rect_region(p_canvas, Rect2(cpos, csize), texture, fgl.uv_rect, modulate, p_outline_size, fd->msdf_range, (double)p_size / (double)fd->msdf_source_size, _font_get_msdf_rounded_outline(p_font_rid));
} else {
Point2 cpos = p_pos;
double scale = _font_get_scale(p_font_rid, p_size) / oversampling_factor;
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