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Merge pull request #11441 from Calinou/shader-reference-avoid-texturesize

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Document `textureSize()` should be avoided in Built-in functions
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Max Hilbrunner
2025-11-09 18:26:30 +01:00
committed by GitHub
parent 966554376a aff19fe068
commit c275e9f41b
2 changed files with 4 additions and 4 deletions
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2
tutorials/shaders/shader_reference/canvas_item_shader.rst
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@@ -127,7 +127,7 @@ is usually:
+--------------------------------+----------------------------------------------------------------+
| in vec2 **TEXTURE_PIXEL_SIZE** | Normalized pixel size of the default 2D texture. |
| | For a Sprite2D with a texture of size 64x32px, |
| | **TEXTURE_PIXEL_SIZE** = ``vec2(1/64, 1/32)`` |
| | **TEXTURE_PIXEL_SIZE** = ``vec2(1.0/64.0, 1.0/32.0)`` |
+--------------------------------+----------------------------------------------------------------+
| inout vec2 **VERTEX** | Vertex position, in local space. |
+--------------------------------+----------------------------------------------------------------+

6
tutorials/shaders/shader_reference/shader_functions.rst
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@@ -2254,9 +2254,9 @@ Texture functions
+------------------+---------------------------------------------------------------------------------------------------------+---------------------------------------------------------------------+
| | ivec2 | | :ref:`textureSize<shader_func_textureSize>`\ (\ |gsampler2D| s, int lod) | Get the size of a texture. |
| | ivec2 | | :ref:`textureSize<shader_func_textureSize>`\ (\ samplerCube s, int lod) | |
| | ivec2 | | :ref:`textureSize<shader_func_textureSize>`\ (\ samplerCubeArray s, int lod) | |
| | ivec3 | | :ref:`textureSize<shader_func_textureSize>`\ (\ |gsampler2DArray| s, int lod) | |
| | ivec3 | | :ref:`textureSize<shader_func_textureSize>`\ (\ |gsampler3D| s, int lod) | |
| | ivec2 | | :ref:`textureSize<shader_func_textureSize>`\ (\ samplerCubeArray s, int lod) | For performance reasons, this function should be avoided as it |
| | ivec3 | | :ref:`textureSize<shader_func_textureSize>`\ (\ |gsampler2DArray| s, int lod) | always performs a full texture read. When possible, you should pass |
| | ivec3 | | :ref:`textureSize<shader_func_textureSize>`\ (\ |gsampler3D| s, int lod) | the texture size as a uniform instead. |
+------------------+---------------------------------------------------------------------------------------------------------+---------------------------------------------------------------------+
| | vec2 | | :ref:`textureQueryLod<shader_func_textureQueryLod>`\ (\ |gsampler2D| s, vec2 p) | Compute the level-of-detail that would be used to sample from a |
| | vec3 | | :ref:`textureQueryLod<shader_func_textureQueryLod>`\ (\ |gsampler2DArray| s, vec2 p) | texture. |