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/**************************************************************************

 *

 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.

 * 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, sub license, 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 (including the

 * next paragraph) 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 NON-INFRINGEMENT.

 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.

 *

 **************************************************************************/

 /*

  * Authors:

  *   Keith Whitwell 

  */

#include "main/glheader.h"

#include "main/macros.h"

#include "main/enums.h"

#include "main/shaderapi.h"

#include "program/prog_instruction.h"

#include "program/program.h"

#include "cso_cache/cso_context.h"

#include "draw/draw_context.h"

#include "st_context.h"

#include "st_program.h"

#include "st_mesa_to_tgsi.h"

#include "st_cb_program.h"

static GLuint SerialNo = 1;

/**

 * Called via ctx->Driver.BindProgram() to bind an ARB vertex or

 * fragment program.

 */

static void st_bind_program( struct gl_context *ctx,

			     GLenum target,

			     struct gl_program *prog )

{

   struct st_context *st = st_context(ctx);

   switch (target) {

   case GL_VERTEX_PROGRAM_ARB:

      st->dirty.st |= ST_NEW_VERTEX_PROGRAM;

      break;

   case GL_FRAGMENT_PROGRAM_ARB:

      st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;

      break;

   case MESA_GEOMETRY_PROGRAM:

      st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;

      break;

   }

}

/**

 * Called via ctx->Driver.UseProgram() to bind a linked GLSL program

 * (vertex shader + fragment shader).

 */

static void st_use_program( struct gl_context *ctx, struct gl_shader_program *shProg)

{

   struct st_context *st = st_context(ctx);

   st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;

   st->dirty.st |= ST_NEW_VERTEX_PROGRAM;

   st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;

}

/**

 * Called via ctx->Driver.NewProgram() to allocate a new vertex or

 * fragment program.

 */

static struct gl_program *st_new_program( struct gl_context *ctx,

					  GLenum target,

					  GLuint id )

{

   switch (target) {

   case GL_VERTEX_PROGRAM_ARB: {

      struct st_vertex_program *prog = ST_CALLOC_STRUCT(st_vertex_program);

      prog->serialNo = SerialNo++;

      return _mesa_init_vertex_program( ctx,

					&prog->Base,

					target,

					id );

   }

   case GL_FRAGMENT_PROGRAM_ARB:

   case GL_FRAGMENT_PROGRAM_NV: {

      struct st_fragment_program *prog = ST_CALLOC_STRUCT(st_fragment_program);

      prog->serialNo = SerialNo++;

      return _mesa_init_fragment_program( ctx,

					  &prog->Base,

					  target,

					  id );

   }

   case MESA_GEOMETRY_PROGRAM: {

      struct st_geometry_program *prog = ST_CALLOC_STRUCT(st_geometry_program);

      prog->serialNo = SerialNo++;

      return _mesa_init_geometry_program( ctx,

                                          &prog->Base,

                                          target,

                                          id );

   }

   default:

      assert(0);

      return NULL;

   }

}

void

st_delete_program(struct gl_context *ctx, struct gl_program *prog)

{

   struct st_context *st = st_context(ctx);

   switch( prog->Target ) {

   case GL_VERTEX_PROGRAM_ARB:

      {

         struct st_vertex_program *stvp = (struct st_vertex_program *) prog;

         st_vp_release_varients( st, stvp );

      }

      break;

   case MESA_GEOMETRY_PROGRAM:

      {

         struct st_geometry_program *stgp = (struct st_geometry_program *) prog;

         if (stgp->driver_shader) {

            cso_delete_geometry_shader(st->cso_context, stgp->driver_shader);

            stgp->driver_shader = NULL;

         }

         if (stgp->tgsi.tokens) {

            st_free_tokens((void *) stgp->tgsi.tokens);

            stgp->tgsi.tokens = NULL;

         }

      }

      break;

   case GL_FRAGMENT_PROGRAM_ARB:

      {

         struct st_fragment_program *stfp = (struct st_fragment_program *) prog;

         if (stfp->driver_shader) {

            cso_delete_fragment_shader(st->cso_context, stfp->driver_shader);

            stfp->driver_shader = NULL;

         }

         if (stfp->tgsi.tokens) {

            st_free_tokens(stfp->tgsi.tokens);

            stfp->tgsi.tokens = NULL;

         }

         if (stfp->bitmap_program) {

            struct gl_program *prg = &stfp->bitmap_program->Base.Base;

            _mesa_reference_program(ctx, &prg, NULL);

            stfp->bitmap_program = NULL;

         }

      }

      break;

   default:

      assert(0); /* problem */

   }

   /* delete base class */

   _mesa_delete_program( ctx, prog );

}

static GLboolean st_is_program_native( struct gl_context *ctx,

				       GLenum target,

				       struct gl_program *prog )

{

   return GL_TRUE;

}

static GLboolean st_program_string_notify( struct gl_context *ctx,

                                           GLenum target,

                                           struct gl_program *prog )

{

   struct st_context *st = st_context(ctx);

   if (target == GL_FRAGMENT_PROGRAM_ARB) {

      struct st_fragment_program *stfp = (struct st_fragment_program *) prog;

      stfp->serialNo++;

      if (stfp->driver_shader) {

         cso_delete_fragment_shader(st->cso_context, stfp->driver_shader);

         stfp->driver_shader = NULL;

      }

      if (stfp->tgsi.tokens) {

         st_free_tokens(stfp->tgsi.tokens);

         stfp->tgsi.tokens = NULL;

      }

      if (st->fp == stfp)

	 st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;

   }

   else if (target == MESA_GEOMETRY_PROGRAM) {

      struct st_geometry_program *stgp = (struct st_geometry_program *) prog;

      stgp->serialNo++;

      if (stgp->driver_shader) {

         cso_delete_geometry_shader(st->cso_context, stgp->driver_shader);

         stgp->driver_shader = NULL;

      }

      if (stgp->tgsi.tokens) {

         st_free_tokens((void *) stgp->tgsi.tokens);

         stgp->tgsi.tokens = NULL;

      }

      if (st->gp == stgp)

	 st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;

   }

   else if (target == GL_VERTEX_PROGRAM_ARB) {

      struct st_vertex_program *stvp = (struct st_vertex_program *) prog;

      stvp->serialNo++;

      st_vp_release_varients( st, stvp );

      if (st->vp == stvp)

	 st->dirty.st |= ST_NEW_VERTEX_PROGRAM;

   }

   /* XXX check if program is legal, within limits */

   return GL_TRUE;

}

void st_init_program_functions(struct dd_function_table *functions)

{

   functions->BindProgram = st_bind_program;

   functions->UseProgram = st_use_program;

   functions->NewProgram = st_new_program;

   functions->DeleteProgram = st_delete_program;

   functions->IsProgramNative = st_is_program_native;

   functions->ProgramStringNotify = st_program_string_notify;

}