Merge pull request #628 from lexaknyazev/1.0.1-floats

Clarification on min/max float precision
KhronosGroup · Jun 23, 2016 · ffeca56 · ffeca56
2 parents 388ecee + a911348
commit ffeca56
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/specification/2.0/README.md b/specification/2.0/README.md
@@ -1256,13 +1256,17 @@ Specifies if the attribute is a scalar, vector, or matrix, and the number of ele
 
 Maximum value of each component in this attribute.  Both min and max arrays have the same length.  The length is determined by the value of the type property; it can be `1`, `2`, `3`, `4`, `9`, or `16`.
 
+When `componentType` is `5126` (FLOAT) each array value must be stored as double-precision JSON number with numerical value which is equal to buffer-stored single-precision value to avoid extra runtime conversions.
+
 * **Type**: `number[1-16]`
 * **Required**: Yes
 
 ### accessor.min :white_check_mark:
 
 Minimum value of each component in this attribute.  Both min and max arrays have the same length.  The length is determined by the value of the type property; it can be `1`, `2`, `3`, `4`, `9`, or `16`.
 
+When `componentType` is `5126` (FLOAT) each array value must be stored as double-precision JSON number with numerical value which is equal to buffer-stored single-precision value to avoid extra runtime conversions.
+
 * **Type**: `number[1-16]`
 * **Required**: Yes
 

diff --git a/specification/2.0/schema/accessor.schema.json b/specification/2.0/schema/accessor.schema.json
@@ -58,7 +58,7 @@
             "minItems" : 1,
             "maxItems" : 16,
             "required" : true,
-            "gltf_detailedDescription" : "Maximum value of each component in this attribute.  Both min and max arrays have the same length.  The length is determined by the value of the type property; it can be 1, 2, 3, 4, 9, or 16."
+            "gltf_detailedDescription" : "Maximum value of each component in this attribute.  Both min and max arrays have the same length.  The length is determined by the value of the type property; it can be 1, 2, 3, 4, 9, or 16.\n\nWhen `componentType` is `5126` (FLOAT) each array value must be stored as double-precision JSON number with numerical value which is equal to buffer-stored single-precision value to avoid extra runtime conversions."
         },
         "min" : {
             "type" : "array",
@@ -69,7 +69,7 @@
             "minItems" : 1,
             "maxItems" : 16,
             "required" : true,
-            "gltf_detailedDescription" : "Minimum value of each component in this attribute.  Both min and max arrays have the same length.  The length is determined by the value of the type property; it can be 1, 2, 3, 4, 9, or 16."
+            "gltf_detailedDescription" : "Minimum value of each component in this attribute.  Both min and max arrays have the same length.  The length is determined by the value of the type property; it can be 1, 2, 3, 4, 9, or 16.\n\nWhen `componentType` is `5126` (FLOAT) each array value must be stored as double-precision JSON number with numerical value which is equal to buffer-stored single-precision value to avoid extra runtime conversions."
         }
     },
     "additionalProperties" : false