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Diffstat (limited to 'mesalib/src/glsl/glsl_types.h')
| -rw-r--r-- | mesalib/src/glsl/glsl_types.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/mesalib/src/glsl/glsl_types.h b/mesalib/src/glsl/glsl_types.h index 87f57e7c7..048696693 100644 --- a/mesalib/src/glsl/glsl_types.h +++ b/mesalib/src/glsl/glsl_types.h @@ -224,6 +224,41 @@ struct glsl_type { */ unsigned component_slots() const; + /** + * \brief Can this type be implicitly converted to another? + * + * \return True if the types are identical or if this type can be converted + * to \c desired according to Section 4.1.10 of the GLSL spec. + * + * \verbatim + * From page 25 (31 of the pdf) of the GLSL 1.50 spec, Section 4.1.10 + * Implicit Conversions: + * + * In some situations, an expression and its type will be implicitly + * converted to a different type. The following table shows all allowed + * implicit conversions: + * + * Type of expression | Can be implicitly converted to + * -------------------------------------------------- + * int float + * uint + * + * ivec2 vec2 + * uvec2 + * + * ivec3 vec3 + * uvec3 + * + * ivec4 vec4 + * uvec4 + * + * There are no implicit array or structure conversions. For example, + * an array of int cannot be implicitly converted to an array of float. + * There are no implicit conversions between signed and unsigned + * integers. + * \endverbatim + */ + bool can_implicitly_convert_to(const glsl_type *desired) const; /** * Query whether or not a type is a scalar (non-vector and non-matrix). |