prog_parameter: Document the fact that Size may be > 4
Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>
diff --git a/src/mesa/shader/prog_parameter.h b/src/mesa/shader/prog_parameter.h
index d1fcf47..699cb0c 100644
--- a/src/mesa/shader/prog_parameter.h
+++ b/src/mesa/shader/prog_parameter.h
@@ -56,7 +56,13 @@
const char *Name; /**< Null-terminated string */
gl_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) */
+ /**
+ * Number of components (1..4), or more.
+ * If the number of components is greater than 4,
+ * this parameter is part of a larger uniform like a GLSL matrix or array.
+ * The next program parameter's Size will be Size-4 of this parameter.
+ */
+ GLuint Size;
GLboolean Used; /**< Helper flag for GLSL uniform tracking */
GLboolean Initialized; /**< Has the ParameterValue[] been set? */
GLbitfield Flags; /**< Bitmask of PROG_PARAM_*_BIT */