mesa: glsl: add usage tracking for uniform vars

Unused uniforms are no longer included in the active uniforms list.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mesa/shader/prog_parameter.h b/src/mesa/shader/prog_parameter.h
index ac5c629fabc..e8d3e9ec336 100644
--- a/src/mesa/shader/prog_parameter.h
+++ b/src/mesa/shader/prog_parameter.h
@@ -48,6 +48,7 @@ struct gl_program_parameter
    enum register_file Type; /**< PROGRAM_NAMED_PARAM, CONSTANT or STATE_VAR */
    GLenum DataType;         /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
    GLuint Size;             /**< Number of components (1..4) */
+   GLboolean Used;          /**< Helper flag for GLSL uniform tracking */
    /**
     * A sequence of STATE_* tokens and integers to identify GL state.
     */
@@ -112,6 +113,10 @@ extern GLint
 _mesa_add_uniform(struct gl_program_parameter_list *paramList,
                   const char *name, GLuint size, GLenum datatype);
 
+extern void
+_mesa_use_uniform(struct gl_program_parameter_list *paramList,
+                  const char *name);
+
 extern GLint
 _mesa_add_sampler(struct gl_program_parameter_list *paramList,
                   const char *name, GLenum datatype);