From fa0066ae2b2d304065ee8d93d9b5ecc8b457425a Mon Sep 17 00:00:00 2001 From: Paul Berry Date: Tue, 25 Oct 2011 16:24:03 -0700 Subject: [PATCH] mesa: Add glsl_type::get_scalar_type() function. This function is similar to get_base_type(), but when called on arrays, it returns the scalar type composing the array. For example, glsl_type(vec4[]) => float_type. Acked-by: Kenneth Graunke --- src/glsl/glsl_types.cpp | 23 +++++++++++++++++++++++ src/glsl/glsl_types.h | 11 +++++++++++ 2 files changed, 34 insertions(+) diff --git a/src/glsl/glsl_types.cpp b/src/glsl/glsl_types.cpp index c94aec0..03e9987 100644 --- a/src/glsl/glsl_types.cpp +++ b/src/glsl/glsl_types.cpp @@ -258,6 +258,29 @@ const glsl_type *glsl_type::get_base_type() const } +const glsl_type *glsl_type::get_scalar_type() const +{ + const glsl_type *type = this; + + /* Handle arrays */ + while (type->base_type == GLSL_TYPE_ARRAY) + type = type->fields.array; + + /* Handle vectors and matrices */ + switch (type->base_type) { + case GLSL_TYPE_UINT: + return uint_type; + case GLSL_TYPE_INT: + return int_type; + case GLSL_TYPE_FLOAT: + return float_type; + default: + /* Handle everything else */ + return type; + } +} + + void _mesa_glsl_release_types(void) { diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h index 0486966..2f849af 100644 --- a/src/glsl/glsl_types.h +++ b/src/glsl/glsl_types.h @@ -178,6 +178,17 @@ struct glsl_type { const glsl_type *get_base_type() const; /** + * Get the basic scalar type which this type aggregates. + * + * If the type is a numeric or boolean scalar, vector, or matrix, or an + * array of any of those, this function gets the scalar type of the + * individual components. For structs and arrays of structs, this function + * returns the struct type. For samplers and arrays of samplers, this + * function returns the sampler type. + */ + const glsl_type *get_scalar_type() const; + + /** * Query the type of elements in an array * * \return -- 2.7.4