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      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    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATEGS);
     50 
     51    gs->base.tokens = tgsi_dup_tokens(templ->tokens);
     52 
     53    /* Collect basic info that we'll need later:
     54     */
     55    tgsi_scan_shader(gs->base.tokens, &gs->base.info);
     56 
     57    gs->draw_shader = draw_create_geometry_shader(svga->swtnl.draw, templ);
     58 
     59    gs->base.id = svga->debug.shader_id++;
     60 
     61    gs->generic_outputs = svga_get_generic_outputs_mask(&gs->base.info);
     62 
     63    /* check for any stream output declarations */
     64    if (templ->stream_output.num_outputs) {
     65       gs->base.stream_output = svga_create_stream_output(svga, &gs->base,
     66                                                          &templ->stream_output);
     67    }
     68 
     69    SVGA_STATS_TIME_POP(svga_sws(svga));
     70    return gs;
     71 }
     72 
     73 
     74 static void
     75 svga_bind_gs_state(struct pipe_context *pipe, void *shader)
     76 {
     77    struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
     78    struct svga_context *svga = svga_context(pipe);
     79 
     80    svga->curr.user_gs = gs;
     81    svga->dirty |= SVGA_NEW_GS;
     82 }
     83 
     84 
     85 static void
     86 svga_delete_gs_state(struct pipe_context *pipe, void *shader)
     87 {
     88    struct svga_context *svga = svga_context(pipe);
     89    struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
     90    struct svga_geometry_shader *next_gs;
     91    struct svga_shader_variant *variant, *tmp;
     92    enum pipe_error ret;
     93 
     94    svga_hwtnl_flush_retry(svga);
     95 
     96    /* Start deletion from the original geometry shader state */
     97    if (gs->base.parent != NULL)
     98       gs = (struct svga_geometry_shader *)gs->base.parent;
     99 
    100    /* Free the list of geometry shaders */
    101    while (gs) {
    102       next_gs = (struct svga_geometry_shader *)gs->base.next;
    103 
    104       if (gs->base.stream_output != NULL)
    105          svga_delete_stream_output(svga, gs->base.stream_output);
    106 
    107       draw_delete_geometry_shader(svga->swtnl.draw, gs->draw_shader);
    108 
    109       for (variant = gs->base.variants; variant; variant = tmp) {
    110          tmp = variant->next;
    111 
    112          /* Check if deleting currently bound shader */
    113          if (variant == svga->state.hw_draw.gs) {
    114             ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_GS, NULL);
    115             if (ret != PIPE_OK) {
    116                svga_context_flush(svga, NULL);
    117                ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_GS, NULL);
    118                assert(ret == PIPE_OK);
    119             }
    120             svga->state.hw_draw.gs = NULL;
    121          }
    122 
    123          ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_GS, variant);
    124          if (ret != PIPE_OK) {
    125             svga_context_flush(svga, NULL);
    126             ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_GS,
    127                                               variant);
    128             assert(ret == PIPE_OK);
    129          }
    130       }
    131 
    132       FREE((void *)gs->base.tokens);
    133       FREE(gs);
    134       gs = next_gs;
    135    }
    136 }
    137 
    138 
    139 void
    140 svga_init_gs_functions(struct svga_context *svga)
    141 {
    142    svga->pipe.create_gs_state = svga_create_gs_state;
    143    svga->pipe.bind_gs_state = svga_bind_gs_state;
    144    svga->pipe.delete_gs_state = svga_delete_gs_state;
    145 }
    146