/**************************************************************************
 * 
 * Copyright 2007 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.
 * 
 **************************************************************************/

#include "sp_context.h"
#include "sp_state.h"

#include "pipe/p_defines.h"
#include "pipe/p_winsys.h"
#include "pipe/draw/draw_context.h"
#include "pipe/tgsi/exec/tgsi_core.h"


void * softpipe_create_fs_state(struct pipe_context *pipe,
                                const struct pipe_shader_state *templ)
{
   struct softpipe_context *softpipe = softpipe_context(pipe);

   /* Decide whether we'll be codegenerating this shader and if so do
    * that now.
    */

   struct pipe_shader_state *state = malloc(sizeof(struct pipe_shader_state));
   memcpy(state, templ, sizeof(struct pipe_shader_state));

#if defined(__i386__) || defined(__386__)
   if (softpipe->use_sse) {
      x86_init_func( &state->sse2_program );

      tgsi_emit_sse2_fs( state->tokens, &state->sse2_program );

      state->executable = (void *)x86_get_func( &state->sse2_program );
   }
#endif

   return state;
}

void softpipe_bind_fs_state(struct pipe_context *pipe, void *fs)
{
   struct softpipe_context *softpipe = softpipe_context(pipe);

   softpipe->fs = (struct pipe_shader_state *)fs;

   softpipe->dirty |= SP_NEW_FS;
}

void softpipe_delete_fs_state(struct pipe_context *pipe,
                              void *shader)
{
#if defined(__i386__) || defined(__386__)
   struct pipe_shader_state *state = shader;

   x86_release_func( &state->sse2_program );
#endif

   free(shader);
}


void * softpipe_create_vs_state(struct pipe_context *pipe,
                                const struct pipe_shader_state *templ)
{
   struct softpipe_context *softpipe = softpipe_context(pipe);
   struct sp_vertex_shader_state *state =
      malloc(sizeof(struct sp_vertex_shader_state));
   struct pipe_shader_state *templ_copy =
      malloc(sizeof(struct pipe_shader_state));
   memcpy(templ_copy, templ, sizeof(struct pipe_shader_state));

   state->state = templ_copy;
   state->draw_data = draw_create_vertex_shader(softpipe->draw,
                                                state->state);

   return state;
}

void softpipe_bind_vs_state(struct pipe_context *pipe, void *vs)
{
   struct softpipe_context *softpipe = softpipe_context(pipe);

   softpipe->vs = (const struct sp_vertex_shader_state *)vs;

   draw_bind_vertex_shader(softpipe->draw, softpipe->vs->draw_data);

   softpipe->dirty |= SP_NEW_VS;
}

void softpipe_delete_vs_state(struct pipe_context *pipe,
                              void *vs)
{
   struct softpipe_context *softpipe = softpipe_context(pipe);

   struct sp_vertex_shader_state *state =
      (struct sp_vertex_shader_state *)vs;

   draw_delete_vertex_shader(softpipe->draw, state->draw_data);
   free(state->state);
   free(state);
}



void softpipe_set_constant_buffer(struct pipe_context *pipe,
                                  uint shader, uint index,
                                  const struct pipe_constant_buffer *buf)
{
   struct softpipe_context *softpipe = softpipe_context(pipe);
   struct pipe_winsys *ws = pipe->winsys;

   assert(shader < PIPE_SHADER_TYPES);
   assert(index == 0);

   /* note: reference counting */
   ws->buffer_reference(ws,
                        &softpipe->constants[shader].buffer,
                        buf->buffer);
   softpipe->constants[shader].size = buf->size;

   softpipe->dirty |= SP_NEW_CONSTANTS;
}