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@@ -266,7 +266,7 @@ You can declare arrays at global space like:
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const lowp vec3 v[1] = lowp vec3[1] ( vec3(0, 0, 1) );
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void fragment() {
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- ALBEDO = v[0];
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+ ALBEDO = v[0];
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}
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.. note::
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@@ -676,7 +676,7 @@ When vec_type (float), vec_int_type, vec_uint_type, vec_bool_type nomenclature i
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:ref:`Differences between GLES2 and GLES3 doc <doc_gles2_gles3_differences>`.
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| Function | Description |
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+| Function | Description / Return value |
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+========================================================================+===============================================================+
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| vec_type **radians** (vec_type degrees) | Convert degrees to radians |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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@@ -722,55 +722,61 @@ When vec_type (float), vec_int_type, vec_uint_type, vec_bool_type nomenclature i
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| vec_type **inversesqrt** (vec_type x) | Inverse square root |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **abs** (vec_type x) | Absolute |
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+| vec_type **abs** (vec_type x) | Absolute value (returns positive value if negative) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| ivec_type **abs** (ivec_type x) | Absolute |
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+| ivec_type **abs** (ivec_type x) | Absolute value (returns positive value if negative) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **sign** (vec_type x) | Sign |
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+| vec_type **sign** (vec_type x) | Sign (returns ``1.0`` if positive, ``-1.0`` if negative, |
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+| | ``0.0`` if zero) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| ivec_type **sign** (ivec_type x) | Sign |
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+| ivec_type **sign** (ivec_type x) | Sign (returns ``1`` if positive, ``-1`` if negative, |
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+| | ``0`` if zero) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **floor** (vec_type x) | Floor |
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+| vec_type **floor** (vec_type x) | Round to the integer below |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **round** (vec_type x) | Round |
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+| vec_type **round** (vec_type x) | Round to the nearest integer |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **roundEven** (vec_type x) | Round to the nearest even number |
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+| vec_type **roundEven** (vec_type x) | Round to the nearest even integer |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| vec_type **trunc** (vec_type x) | Truncation |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **ceil** (vec_type x) | Ceil |
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+| vec_type **ceil** (vec_type x) | Round to the integer above |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| vec_type **fract** (vec_type x) | Fractional |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **mod** (vec_type x, vec_type y) | Remainder |
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+| vec_type **mod** (vec_type x, vec_type y) | Modulo (division remainder) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **mod** (vec_type x , float y) | Remainder |
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+| vec_type **mod** (vec_type x, float y) | Modulo (division remainder) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| vec_type **modf** (vec_type x, out vec_type i) | Fractional of ``x``, with ``i`` as integer part |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **min** (vec_type a, vec_type b) | Minimum |
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+| vec_type **min** (vec_type a, vec_type b) | Lowest value between ``a`` and ``b`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **max** (vec_type a, vec_type b) | Maximum |
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+| vec_type **max** (vec_type a, vec_type b) | Highest value between ``a`` and ``b`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **clamp** (vec_type x, vec_type min, vec_type max) | Clamp to ``min..max`` |
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+| vec_type **clamp** (vec_type x, vec_type min, vec_type max) | Clamp ``x`` between ``min`` and ``max`` (inclusive) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| float **mix** (float a, float b, float c) | Linear interpolate |
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+| float **mix** (float a, float b, float c) | Linear interpolate between ``a`` and ``b`` by ``c`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **mix** (vec_type a, vec_type b, float c) | Linear interpolate (scalar coefficient) |
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+| vec_type **mix** (vec_type a, vec_type b, float c) | Linear interpolate between ``a`` and ``b`` by ``c`` |
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+| | (scalar coefficient) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **mix** (vec_type a, vec_type b, vec_type c) | Linear interpolate (vector coefficient) |
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+| vec_type **mix** (vec_type a, vec_type b, vec_type c) | Linear interpolate between ``a`` and ``b`` by ``c`` |
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+| | (vector coefficient) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **mix** (vec_type a, vec_type b, bvec_type c) | Linear interpolate (boolean-vector selection) |
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+| vec_type **mix** (vec_type a, vec_type b, bvec_type c) | Linear interpolate between ``a`` and ``b`` by ``c`` |
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+| | (boolean-vector selection) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| vec_type **fma** (vec_type a, vec_type b, vec_type c) | Performs a fused multiply-add operation: ``(a * b + c)`` |
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+| | (faster than doing it manually) |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| vec_type **step** (vec_type a, vec_type b) | ``b[i] < a[i] ? 0.0 : 1.0`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| vec_type **step** (float a, vec_type b) | ``b[i] < a ? 0.0 : 1.0`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **smoothstep** (vec_type a, vec_type b, vec_type c) | Hermite interpolate |
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+| vec_type **smoothstep** (vec_type a, vec_type b, vec_type c) | Hermite interpolate between ``a`` and ``b`` by ``c`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| vec_type **smoothstep** (float a, float b, vec_type c) | Hermite interpolate |
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+| vec_type **smoothstep** (float a, float b, vec_type c) | Hermite interpolate between ``a`` and ``b`` by ``c`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| bvec_type **isnan** (vec_type x) | Returns ``true`` if scalar or vector component is ``NaN`` |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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@@ -822,9 +828,9 @@ When vec_type (float), vec_int_type, vec_uint_type, vec_bool_type nomenclature i
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| bvec_type **notEqual** (vec_type x, vec_type y) | Bool vector comparison on != int/uint/float vectors |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| bool **any** (bvec_type x) | Any component is ``true`` |
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+| bool **any** (bvec_type x) | ``true`` if any component is ``true``, ``false`` otherwise |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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-| bool **all** (bvec_type x) | All components are ``true`` |
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+| bool **all** (bvec_type x) | ``true`` if all components are ``true``, ``false`` otherwise |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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| bvec_type **not** (bvec_type x) | Invert boolean vector |
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+------------------------------------------------------------------------+---------------------------------------------------------------+
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Nathan Lovato