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glsl: Add simple vector type accessor helpers.

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This patch introduces new functions to quickly grab a pointer to a
vector type.  For example:

   glsl_type::bvec(4)   returns   glsl_type::bvec4_type
   glsl_type::ivec(3)   returns   glsl_type::ivec3_type
   glsl_type::uvec(2)   returns   glsl_type::uvec2_type
   glsl_type::vec(1)    returns   glsl_type::float_type

This is less wordy than glsl_type::get_instance(GLSL_TYPE_BOOL, 4, 1),
which can help avoid extra word wrapping.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke 2013-06-18 04:22:30 -07:00
parent 9a14e412d6
commit d367a1cbdb
2 changed files with 61 additions and 0 deletions
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52
src/glsl/glsl_types.cpp
View file

@ -534,6 +534,58 @@ glsl_type::glsl_type(const glsl_type *array, unsigned length) :
}
const glsl_type *const
glsl_type::vec(unsigned components)
{
if (components == 0 || components > 4)
return error_type;
static const glsl_type *const ts[] = {
float_type, vec2_type, vec3_type, vec4_type
};
return ts[components - 1];
}
const glsl_type *const
glsl_type::ivec(unsigned components)
{
if (components == 0 || components > 4)
return error_type;
static const glsl_type *const ts[] = {
int_type, ivec2_type, ivec3_type, ivec4_type
};
return ts[components - 1];
}
const glsl_type *const
glsl_type::uvec(unsigned components)
{
if (components == 0 || components > 4)
return error_type;
static const glsl_type *const ts[] = {
uint_type, uvec2_type, uvec3_type, uvec4_type
};
return ts[components - 1];
}
const glsl_type *const
glsl_type::bvec(unsigned components)
{
if (components == 0 || components > 4)
return error_type;
static const glsl_type *const ts[] = {
bool_type, bvec2_type, bvec3_type, bvec4_type
};
return ts[components - 1];
}
const glsl_type *
glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns)
{

9
src/glsl/glsl_types.h
View file

@ -187,6 +187,15 @@ struct glsl_type {
static const glsl_type *const mat4_type;
/*@}*/
/**
* Convenience accessors for vector types (shorter than get_instance()).
* @{
*/
static const glsl_type *const vec(unsigned components);
static const glsl_type *const ivec(unsigned components);
static const glsl_type *const uvec(unsigned components);
static const glsl_type *const bvec(unsigned components);
/**@}*/
/**
* For numeric and boolean derrived types returns the basic scalar type