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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 shader tokens, the ones passed in will go away.
     57     */
     58    state->shader.tokens = tgsi_dup_tokens(templ->tokens);
     59    if (state->shader.tokens == NULL)
     60       goto fail;
     61 
     62    state->draw_data = draw_create_geometry_shader(llvmpipe->draw, templ);
     63    if (state->draw_data == NULL)
     64       goto fail;
     65 
     66    return state;
     67 
     68 fail:
     69    if (state) {
     70       FREE( (void *)state->shader.tokens );
     71       FREE( state->draw_data );
     72       FREE( state );
     73    }
     74    return NULL;
     75 }
     76 
     77 
     78 static void
     79 llvmpipe_bind_gs_state(struct pipe_context *pipe, void *gs)
     80 {
     81    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
     82 
     83    llvmpipe->gs = (struct lp_geometry_shader *)gs;
     84 
     85    draw_bind_geometry_shader(llvmpipe->draw,
     86                              (llvmpipe->gs ? llvmpipe->gs->draw_data : NULL));
     87 
     88    llvmpipe->dirty |= LP_NEW_GS;
     89 }
     90 
     91 
     92 static void
     93 llvmpipe_delete_gs_state(struct pipe_context *pipe, void *gs)
     94 {
     95    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
     96 
     97    struct lp_geometry_shader *state =
     98       (struct lp_geometry_shader *)gs;
     99 
    100    draw_delete_geometry_shader(llvmpipe->draw,
    101                                (state) ? state->draw_data : 0);
    102    FREE(state);
    103 }
    104 
    105 
    106 void
    107 llvmpipe_init_gs_funcs(struct llvmpipe_context *llvmpipe)
    108 {
    109    llvmpipe->pipe.create_gs_state = llvmpipe_create_gs_state;
    110    llvmpipe->pipe.bind_gs_state   = llvmpipe_bind_gs_state;
    111    llvmpipe->pipe.delete_gs_state = llvmpipe_delete_gs_state;
    112 }
    113