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Update canvas_item_shader.rst

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I tested it and it is upper left, not lower left.
This is the CanvasItem shader I used to test it:

shader_type canvas_item;

void fragment() {

	if(distance(FRAGCOORD.xy, vec2(40, 40)) < 30.0)
		COLOR = vec4(1,0,0,1);
	else
		COLOR = vec4(0,0,0,1);
}

(cherry picked from commit b71cec668a)
This commit is contained in:
Samuel Ammonius
2024-02-02 13:46:44 -03:30
committed by Max Hilbrunner
parent 7df8fe736f
commit 4b8fbb8939
1 changed files with 1 additions and 1 deletions
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tutorials/shaders/shader_reference/canvas_item_shader.rst
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@@ -159,7 +159,7 @@ it to the ``NORMALMAP`` property. Godot will handle converting it for use in 2D
| Built-in | Description |
+=============================================+===============================================================+
| in vec4 **FRAGCOORD** | Coordinate of pixel center. In screen space. ``xy`` specifies |
| | position in window. Origin is lower-left. |
| | position in window. Origin is upper-left. |
+---------------------------------------------+---------------------------------------------------------------+
| in vec2 **SCREEN_PIXEL_SIZE** | Size of individual pixels. Equal to inverse of resolution. |
+---------------------------------------------+---------------------------------------------------------------+