prog_parameter.h

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/*
 * Mesa 3-D graphics library
 * Version:  7.3
 *
 * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef PROG_PARAMETER_H
#define PROG_PARAMETER_H

#include "main/mtypes.h"
#include "prog_statevars.h"


#define PROG_PARAM_BIT_CENTROID   0x1  
#define PROG_PARAM_BIT_INVARIANT  0x2  
#define PROG_PARAM_BIT_FLAT       0x4  
#define PROG_PARAM_BIT_LINEAR     0x8  



struct gl_program_parameter
{
   const char *Name;        
   enum register_file Type; 
   GLenum DataType;         
   GLuint Size;             
   GLboolean Used;          
   GLboolean Initialized;   
   GLbitfield Flags;        
   gl_state_index StateIndexes[STATE_LENGTH];
};


struct gl_program_parameter_list
{
   GLuint Size;           
   GLuint NumParameters;  
   struct gl_program_parameter *Parameters; 
   GLfloat (*ParameterValues)[4];        
   GLbitfield StateFlags; 
};


extern struct gl_program_parameter_list *
_mesa_new_parameter_list(void);

extern void
_mesa_free_parameter_list(struct gl_program_parameter_list *paramList);

extern struct gl_program_parameter_list *
_mesa_clone_parameter_list(const struct gl_program_parameter_list *list);

extern struct gl_program_parameter_list *
_mesa_combine_parameter_lists(const struct gl_program_parameter_list *a,
                              const struct gl_program_parameter_list *b);

static INLINE GLuint
_mesa_num_parameters(const struct gl_program_parameter_list *list)
{
   return list ? list->NumParameters : 0;
}

extern GLint
_mesa_add_parameter(struct gl_program_parameter_list *paramList,
                    enum register_file type, const char *name,
                    GLuint size, GLenum datatype, const GLfloat *values,
                    const gl_state_index state[STATE_LENGTH],
                    GLbitfield flags);

extern GLint
_mesa_add_named_parameter(struct gl_program_parameter_list *paramList,
                          const char *name, const GLfloat values[4]);

extern GLint
_mesa_add_named_constant(struct gl_program_parameter_list *paramList,
                         const char *name, const GLfloat values[4],
                         GLuint size);

extern GLint
_mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList,
                           const GLfloat values[4], GLuint size,
                           GLuint *swizzleOut);

extern GLint
_mesa_add_uniform(struct gl_program_parameter_list *paramList,
                  const char *name, GLuint size, GLenum datatype,
                  const GLfloat *values);

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);

extern GLint
_mesa_add_varying(struct gl_program_parameter_list *paramList,
                  const char *name, GLuint size, GLbitfield flags);

extern GLint
_mesa_add_attribute(struct gl_program_parameter_list *paramList,
                    const char *name, GLint size, GLenum datatype, GLint attrib);

extern GLint
_mesa_add_state_reference(struct gl_program_parameter_list *paramList,
                          const gl_state_index stateTokens[STATE_LENGTH]);

extern GLfloat *
_mesa_lookup_parameter_value(const struct gl_program_parameter_list *paramList,
                             GLsizei nameLen, const char *name);

extern GLint
_mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList,
                             GLsizei nameLen, const char *name);

extern GLboolean
_mesa_lookup_parameter_constant(const struct gl_program_parameter_list *list,
                                const GLfloat v[], GLuint vSize,
                                GLint *posOut, GLuint *swizzleOut);

extern GLuint
_mesa_longest_parameter_name(const struct gl_program_parameter_list *list,
                             enum register_file type);

extern GLuint
_mesa_num_parameters_of_type(const struct gl_program_parameter_list *list,
                             enum register_file type);


#endif /* PROG_PARAMETER_H */