diff options
| -rw-r--r-- | src/glsl/ir.cpp | 15 | ||||
| -rw-r--r-- | src/glsl/ir.h | 11 |
2 files changed, 26 insertions, 0 deletions
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp index 9aad0fcd42f..ef7300e6535 100644 --- a/src/glsl/ir.cpp +++ b/src/glsl/ir.cpp @@ -1354,6 +1354,21 @@ ir_variable::interpolation_string() const } +glsl_interp_qualifier +ir_variable::determine_interpolation_mode(bool flat_shade) +{ + if (this->interpolation != INTERP_QUALIFIER_NONE) + return (glsl_interp_qualifier) this->interpolation; + int location = this->location; + bool is_gl_Color = + location == FRAG_ATTRIB_COL0 || location == FRAG_ATTRIB_COL1; + if (flat_shade && is_gl_Color) + return INTERP_QUALIFIER_FLAT; + else + return INTERP_QUALIFIER_SMOOTH; +} + + ir_function_signature::ir_function_signature(const glsl_type *return_type) : return_type(return_type), is_defined(false), _function(NULL) { diff --git a/src/glsl/ir.h b/src/glsl/ir.h index 0c0cccbd034..404d4cffa91 100644 --- a/src/glsl/ir.h +++ b/src/glsl/ir.h @@ -292,6 +292,17 @@ public: const char *interpolation_string() const; /** + * Determine how this variable should be interpolated based on its + * interpolation qualifier (if present), whether it is gl_Color or + * gl_SecondaryColor, and whether flatshading is enabled in the current GL + * state. + * + * The return value will always be either INTERP_QUALIFIER_SMOOTH, + * INTERP_QUALIFIER_NOPERSPECTIVE, or INTERP_QUALIFIER_FLAT. + */ + glsl_interp_qualifier determine_interpolation_mode(bool flat_shade); + + /** * Delcared name of the variable */ const char *name; |