src/gallium/drivers/svga/svga_pipe_gs.c

   1 /**********************************************************
   2  * Copyright 2014 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "draw/draw_context.h"
  27 #include "util/u_inlines.h"
  28 #include "util/u_memory.h"
  29 #include "util/u_bitmask.h"
  30 #include "tgsi/tgsi_parse.h"
  31 #include "tgsi/tgsi_text.h"
  32
  33 #include "svga_context.h"
  34 #include "svga_cmd.h"
  35 #include "svga_debug.h"
  36 #include "svga_shader.h"
  37 #include "svga_streamout.h"
  38
  39 static void *
  40 svga_create_gs_state(struct pipe_context *pipe,
  41                      const struct pipe_shader_state *templ)
  42 {
  43    struct svga_context *svga = svga_context(pipe);
  44    struct svga_geometry_shader *gs = CALLOC_STRUCT(svga_geometry_shader);
  45
  46    if (!gs)
  47       return NULL;
  48
  49    gs->base.tokens = tgsi_dup_tokens(templ->tokens);
  50
  51    /* Collect basic info that we'll need later:
  52     */
  53    tgsi_scan_shader(gs->base.tokens, &gs->base.info);
  54
  55    gs->draw_shader = draw_create_geometry_shader(svga->swtnl.draw, templ);
  56
  57    gs->base.id = svga->debug.shader_id++;
  58
  59    gs->generic_outputs = svga_get_generic_outputs_mask(&gs->base.info);
  60
  61    /* check for any stream output declarations */
  62    if (templ->stream_output.num_outputs) {
  63       gs->base.stream_output = svga_create_stream_output(svga, &gs->base,
  64                                                          &templ->stream_output);
  65    }
  66
  67    return gs;
  68 }
  69
  70
  71 static void
  72 svga_bind_gs_state(struct pipe_context *pipe, void *shader)
  73 {
  74    struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
  75    struct svga_context *svga = svga_context(pipe);
  76
  77    svga->curr.user_gs = gs;
  78    svga->dirty |= SVGA_NEW_GS;
  79 }
  80
  81
  82 static void
  83 svga_delete_gs_state(struct pipe_context *pipe, void *shader)
  84 {
  85    struct svga_context *svga = svga_context(pipe);
  86    struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
  87    struct svga_geometry_shader *next_gs;
  88    struct svga_shader_variant *variant, *tmp;
  89    enum pipe_error ret;
  90
  91    svga_hwtnl_flush_retry(svga);
  92
  93    /* Start deletion from the original geometry shader state */
  94    if (gs->base.parent != NULL)
  95       gs = (struct svga_geometry_shader *)gs->base.parent;
  96
  97    /* Free the list of geometry shaders */
  98    while (gs) {
  99       next_gs = (struct svga_geometry_shader *)gs->base.next;
 100
 101       if (gs->base.stream_output != NULL)
 102          svga_delete_stream_output(svga, gs->base.stream_output);
 103
 104       draw_delete_geometry_shader(svga->swtnl.draw, gs->draw_shader);
 105
 106       for (variant = gs->base.variants; variant; variant = tmp) {
 107          tmp = variant->next;
 108
 109          /* Check if deleting currently bound shader */
 110          if (variant == svga->state.hw_draw.gs) {
 111             ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_GS, NULL);
 112             if (ret != PIPE_OK) {
 113                svga_context_flush(svga, NULL);
 114                ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_GS, NULL);
 115                assert(ret == PIPE_OK);
 116             }
 117             svga->state.hw_draw.gs = NULL;
 118          }
 119
 120          ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_GS, variant);
 121          if (ret != PIPE_OK) {
 122             svga_context_flush(svga, NULL);
 123             ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_GS,
 124                                               variant);
 125             assert(ret == PIPE_OK);
 126          }
 127       }
 128
 129       FREE((void *)gs->base.tokens);
 130       FREE(gs);
 131       gs = next_gs;
 132    }
 133 }
 134
 135
 136 void
 137 svga_init_gs_functions(struct svga_context *svga)
 138 {
 139    svga->pipe.create_gs_state = svga_create_gs_state;
 140    svga->pipe.bind_gs_state = svga_bind_gs_state;
 141    svga->pipe.delete_gs_state = svga_delete_gs_state;
 142 }