GLint
+_mesa_add_sampler(struct gl_program_parameter_list *paramList,
+ const char *name)
+{
+ GLint i = _mesa_lookup_parameter_index(paramList, -1, name);
+ if (i >= 0 && paramList->Parameters[i].Type == PROGRAM_SAMPLER) {
+ /* already in list */
+ return i;
+ }
+ else {
+ const GLint size = 1;
+ i = _mesa_add_parameter(paramList, name, NULL, size, PROGRAM_SAMPLER);
+ return i;
+ }
+}
+
+
+GLint
_mesa_add_varying(struct gl_program_parameter_list *paramList,
const char *name, GLuint size)
{
/**
- * Named program parameters
- * Used for NV_fragment_program "DEFINE"d constants and "DECLARE"d parameters,
- * and ARB_fragment_program global state references. For the later, Name
- * might be "state.light[0].diffuse", for example.
+ * Program parameter.
+ * Used for NV_fragment_program for "DEFINE"d constants and "DECLARE"d
+ * parameters.
+ * Also used by ARB_vertex/fragment_programs for state variables, etc.
+ * Used by shaders for uniforms, constants, varying vars, etc.
*/
struct gl_program_parameter
{
/**
- * A list of the above program_parameter instances.
+ * List of gl_program_parameter instances.
*/
struct gl_program_parameter_list
{
const char *name, GLuint size);
extern GLint
+_mesa_add_sampler(struct gl_program_parameter_list *paramList,
+ const char *name);
+
+extern GLint
_mesa_add_varying(struct gl_program_parameter_list *paramList,
const char *name, GLuint size);