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  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. #include "lp_debug.h"
  32.  
  33. #include "pipe/p_defines.h"
  34. #include "util/u_memory.h"
  35. #include "util/u_inlines.h"
  36. #include "draw/draw_context.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 no_state;
  52.  
  53.    /* debug */
  54.    if (LP_DEBUG & DEBUG_TGSI) {
  55.       debug_printf("llvmpipe: Create geometry shader %p:\n", (void *)state);
  56.       tgsi_dump(templ->tokens, 0);
  57.    }
  58.  
  59.    /* copy stream output info */
  60.    state->no_tokens = !templ->tokens;
  61.    memcpy(&state->stream_output, &templ->stream_output, sizeof state->stream_output);
  62.  
  63.    if (templ->tokens) {
  64.       state->dgs = draw_create_geometry_shader(llvmpipe->draw, templ);
  65.       if (state->dgs == NULL) {
  66.          goto no_dgs;
  67.       }
  68.    }
  69.  
  70.    return state;
  71.  
  72. no_dgs:
  73.    FREE( state );
  74. no_state:
  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->dgs : 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.    if (!state) {
  102.       return;
  103.    }
  104.  
  105.    draw_delete_geometry_shader(llvmpipe->draw, state->dgs);
  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.