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 #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)
  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    if (templ->type == PIPE_SHADER_IR_TGSI)
  61       state->no_tokens = !templ->tokens;
  62    else
  63       state->no_tokens = FALSE;
  64    memcpy(&state->stream_output, &templ->stream_output, sizeof state->stream_output);
  65
  66    if (templ->tokens || templ->type == PIPE_SHADER_IR_NIR) {
  67       state->dgs = draw_create_geometry_shader(llvmpipe->draw, templ);
  68       if (state->dgs == NULL) {
  69          goto no_dgs;
  70       }
  71    }
  72
  73    return state;
  74
  75 no_dgs:
  76    FREE( state );
  77 no_state:
  78    return NULL;
  79 }
  80
  81
  82 static void
  83 llvmpipe_bind_gs_state(struct pipe_context *pipe, void *gs)
  84 {
  85    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  86
  87    llvmpipe->gs = (struct lp_geometry_shader *)gs;
  88
  89    draw_bind_geometry_shader(llvmpipe->draw,
  90                              (llvmpipe->gs ? llvmpipe->gs->dgs : NULL));
  91
  92    llvmpipe->dirty |= LP_NEW_GS;
  93 }
  94
  95
  96 static void
  97 llvmpipe_delete_gs_state(struct pipe_context *pipe, void *gs)
  98 {
  99    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 100
 101    struct lp_geometry_shader *state =
 102       (struct lp_geometry_shader *)gs;
 103
 104    if (!state) {
 105       return;
 106    }
 107
 108    draw_delete_geometry_shader(llvmpipe->draw, state->dgs);
 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 }