src/gallium/drivers/llvmpipe/lp_state_gs.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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 VMWARE 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    if (!state) {
 104       return;
 105    }
 106
 107    draw_delete_geometry_shader(llvmpipe->draw, state->draw_data);
 108    FREE( (void *)state->shader.tokens );
 109    FREE(state);
 110 }
 111
 112
 113 void
 114 llvmpipe_init_gs_funcs(struct llvmpipe_context *llvmpipe)
 115 {
 116    llvmpipe->pipe.create_gs_state = llvmpipe_create_gs_state;
 117    llvmpipe->pipe.bind_gs_state   = llvmpipe_bind_gs_state;
 118    llvmpipe->pipe.delete_gs_state = llvmpipe_delete_gs_state;
 119 }