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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. #include "lp_context.h"
  29. #include "lp_state.h"
  30. #include "lp_texture.h"
  31.  
  32. #include "pipe/p_defines.h"
  33. #include "util/u_memory.h"
  34. #include "util/u_inlines.h"
  35. #include "draw/draw_context.h"
  36. #include "tgsi/tgsi_dump.h"
  37. #include "tgsi/tgsi_scan.h"
  38. #include "tgsi/tgsi_parse.h"
  39.  
  40.  
  41. static void *
  42. llvmpipe_create_gs_state(struct pipe_context *pipe,
  43.                          const struct pipe_shader_state *templ)
  44. {
  45.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  46.    struct lp_geometry_shader *state;
  47.  
  48.    state = CALLOC_STRUCT(lp_geometry_shader);
  49.    if (state == NULL )
  50.       goto fail;
  51.  
  52.    /* debug */
  53.    if (0)
  54.       tgsi_dump(templ->tokens, 0);
  55.  
  56.    /* copy stream output info */
  57.    state->shader = *templ;
  58.    if (templ->tokens) {
  59.       /* copy shader tokens, the ones passed in will go away. */
  60.       state->shader.tokens = tgsi_dup_tokens(templ->tokens);
  61.       if (state->shader.tokens == NULL)
  62.          goto fail;
  63.  
  64.       state->draw_data = draw_create_geometry_shader(llvmpipe->draw, templ);
  65.       if (state->draw_data == NULL)
  66.          goto fail;
  67.    }
  68.  
  69.    return state;
  70.  
  71. fail:
  72.    if (state) {
  73.       FREE( (void *)state->shader.tokens );
  74.       FREE( state->draw_data );
  75.       FREE( state );
  76.    }
  77.    return NULL;
  78. }
  79.  
  80.  
  81. static void
  82. llvmpipe_bind_gs_state(struct pipe_context *pipe, void *gs)
  83. {
  84.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  85.  
  86.    llvmpipe->gs = (struct lp_geometry_shader *)gs;
  87.  
  88.    draw_bind_geometry_shader(llvmpipe->draw,
  89.                              (llvmpipe->gs ? llvmpipe->gs->draw_data : NULL));
  90.  
  91.    llvmpipe->dirty |= LP_NEW_GS;
  92. }
  93.  
  94.  
  95. static void
  96. llvmpipe_delete_gs_state(struct pipe_context *pipe, void *gs)
  97. {
  98.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  99.  
  100.    struct lp_geometry_shader *state =
  101.       (struct lp_geometry_shader *)gs;
  102.  
  103.    draw_delete_geometry_shader(llvmpipe->draw,
  104.                                (state) ? state->draw_data : 0);
  105.    FREE( (void *)state->shader.tokens );
  106.    FREE(state);
  107. }
  108.  
  109.  
  110. void
  111. llvmpipe_init_gs_funcs(struct llvmpipe_context *llvmpipe)
  112. {
  113.    llvmpipe->pipe.create_gs_state = llvmpipe_create_gs_state;
  114.    llvmpipe->pipe.bind_gs_state   = llvmpipe_bind_gs_state;
  115.    llvmpipe->pipe.delete_gs_state = llvmpipe_delete_gs_state;
  116. }
  117.