src/gallium/drivers/llvmpipe/lp_state_vs.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29
  30 #include "pipe/p_defines.h"
  31 #include "tgsi/tgsi_dump.h"
  32 #include "tgsi/tgsi_parse.h"
  33 #include "util/u_memory.h"
  34 #include "draw/draw_context.h"
  35
  36 #include "lp_context.h"
  37 #include "lp_debug.h"
  38 #include "lp_state.h"
  39
  40
  41 static void *
  42 llvmpipe_create_vs_state(struct pipe_context *pipe,
  43                          const struct pipe_shader_state *templ)
  44 {
  45    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  46    struct lp_vertex_shader *state;
  47
  48    state = CALLOC_STRUCT(lp_vertex_shader);
  49    if (state == NULL )
  50       goto fail;
  51
  52    /* copy shader tokens, the ones passed in will go away.
  53     */
  54    state->shader.tokens = tgsi_dup_tokens(templ->tokens);
  55    if (state->shader.tokens == NULL)
  56       goto fail;
  57
  58    state->draw_data = draw_create_vertex_shader(llvmpipe->draw, templ);
  59    if (state->draw_data == NULL)
  60       goto fail;
  61
  62    if (LP_DEBUG & DEBUG_TGSI) {
  63       debug_printf("llvmpipe: Create vertex shader %p:\n", (void *) state);
  64       tgsi_dump(templ->tokens, 0);
  65    }
  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_vs_state(struct pipe_context *pipe, void *_vs)
  81 {
  82    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  83    const struct lp_vertex_shader *vs = (const struct lp_vertex_shader *)_vs;
  84
  85    if (llvmpipe->vs == vs)
  86       return;
  87
  88    draw_bind_vertex_shader(llvmpipe->draw,
  89                            vs ? vs->draw_data : NULL);
  90
  91    llvmpipe->vs = vs;
  92
  93    llvmpipe->dirty |= LP_NEW_VS;
  94 }
  95
  96
  97 static void
  98 llvmpipe_delete_vs_state(struct pipe_context *pipe, void *vs)
  99 {
 100    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 101
 102    struct lp_vertex_shader *state =
 103       (struct lp_vertex_shader *)vs;
 104
 105    draw_delete_vertex_shader(llvmpipe->draw, state->draw_data);
 106    FREE( (void *)state->shader.tokens );
 107    FREE( state );
 108 }
 109
 110
 111
 112 void
 113 llvmpipe_init_vs_funcs(struct llvmpipe_context *llvmpipe)
 114 {
 115    llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
 116    llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
 117    llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
 118 }