src/gallium/drivers/llvmpipe/lp_state_gs.c

   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 "draw/draw_vs.h"
  37 #include "tgsi/tgsi_dump.h"
  38 #include "tgsi/tgsi_scan.h"
  39 #include "tgsi/tgsi_parse.h"
  40
  41
  42 static void *
  43 llvmpipe_create_gs_state(struct pipe_context *pipe,
  44                          const struct pipe_shader_state *templ)
  45 {
  46    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  47    struct lp_geometry_shader *state;
  48
  49    state = CALLOC_STRUCT(lp_geometry_shader);
  50    if (state == NULL )
  51       goto fail;
  52
  53    /* debug */
  54    if (0)
  55       tgsi_dump(templ->tokens, 0);
  56
  57    /* copy shader tokens, the ones passed in will go away.
  58     */
  59    state->shader.tokens = tgsi_dup_tokens(templ->tokens);
  60    if (state->shader.tokens == NULL)
  61       goto fail;
  62
  63    state->draw_data = draw_create_geometry_shader(llvmpipe->draw, templ);
  64    if (state->draw_data == NULL)
  65       goto fail;
  66
  67    return state;
  68
  69 fail:
  70    if (state) {
  71       FREE( (void *)state->shader.tokens );
  72       FREE( state->draw_data );
  73       FREE( state );
  74    }
  75    return NULL;
  76 }
  77
  78
  79 static void
  80 llvmpipe_bind_gs_state(struct pipe_context *pipe, void *gs)
  81 {
  82    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  83
  84    llvmpipe->gs = (struct lp_geometry_shader *)gs;
  85
  86    draw_bind_geometry_shader(llvmpipe->draw,
  87                              (llvmpipe->gs ? llvmpipe->gs->draw_data : NULL));
  88
  89    llvmpipe->dirty |= LP_NEW_GS;
  90 }
  91
  92
  93 static void
  94 llvmpipe_delete_gs_state(struct pipe_context *pipe, void *gs)
  95 {
  96    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  97
  98    struct lp_geometry_shader *state =
  99       (struct lp_geometry_shader *)gs;
 100
 101    draw_delete_geometry_shader(llvmpipe->draw,
 102                                (state) ? state->draw_data : 0);
 103    FREE(state);
 104 }
 105
 106
 107 void
 108 llvmpipe_init_gs_funcs(struct llvmpipe_context *llvmpipe)
 109 {
 110    llvmpipe->pipe.create_gs_state = llvmpipe_create_gs_state;
 111    llvmpipe->pipe.bind_gs_state   = llvmpipe_bind_gs_state;
 112    llvmpipe->pipe.delete_gs_state = llvmpipe_delete_gs_state;
 113 }