src/gallium/drivers/llvmpipe/lp_state_tess.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2019 Red Hat.
   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 "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **************************************************************************/
  25
  26 #include "lp_context.h"
  27 #include "lp_state.h"
  28 #include "lp_texture.h"
  29 #include "lp_debug.h"
  30
  31 #include "pipe/p_defines.h"
  32 #include "util/u_memory.h"
  33 #include "util/u_inlines.h"
  34 #include "draw/draw_context.h"
  35 #include "tgsi/tgsi_dump.h"
  36 #include "tgsi/tgsi_scan.h"
  37 #include "tgsi/tgsi_parse.h"
  38
  39
  40 static void *
  41 llvmpipe_create_tcs_state(struct pipe_context *pipe,
  42                           const struct pipe_shader_state *templ)
  43 {
  44    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  45    struct lp_tess_ctrl_shader *state;
  46
  47    state = CALLOC_STRUCT(lp_tess_ctrl_shader);
  48    if (!state)
  49       goto no_state;
  50
  51    /* debug */
  52    if (LP_DEBUG & DEBUG_TGSI) {
  53       debug_printf("llvmpipe: Create tess ctrl shader %p:\n", (void *)state);
  54       tgsi_dump(templ->tokens, 0);
  55    }
  56
  57    /* copy stream output info */
  58    state->no_tokens = !templ->tokens;
  59    memcpy(&state->stream_output, &templ->stream_output, sizeof state->stream_output);
  60
  61    if (templ->tokens || templ->type == PIPE_SHADER_IR_NIR) {
  62       state->dtcs = draw_create_tess_ctrl_shader(llvmpipe->draw, templ);
  63       if (state->dtcs == NULL) {
  64          goto no_dgs;
  65       }
  66    }
  67
  68    return state;
  69
  70 no_dgs:
  71    FREE( state );
  72 no_state:
  73    return NULL;
  74 }
  75
  76
  77 static void
  78 llvmpipe_bind_tcs_state(struct pipe_context *pipe, void *tcs)
  79 {
  80    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  81
  82    llvmpipe->tcs = (struct lp_tess_ctrl_shader *)tcs;
  83
  84    draw_bind_tess_ctrl_shader(llvmpipe->draw,
  85                               (llvmpipe->tcs ? llvmpipe->tcs->dtcs : NULL));
  86
  87    llvmpipe->dirty |= LP_NEW_TCS;
  88 }
  89
  90
  91 static void
  92 llvmpipe_delete_tcs_state(struct pipe_context *pipe, void *tcs)
  93 {
  94    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  95
  96    struct lp_tess_ctrl_shader *state =
  97       (struct lp_tess_ctrl_shader *)tcs;
  98
  99    if (!state) {
 100       return;
 101    }
 102
 103    draw_delete_tess_ctrl_shader(llvmpipe->draw, state->dtcs);
 104    FREE(state);
 105 }
 106
 107
 108 static void *
 109 llvmpipe_create_tes_state(struct pipe_context *pipe,
 110                           const struct pipe_shader_state *templ)
 111 {
 112    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 113    struct lp_tess_eval_shader *state;
 114
 115    state = CALLOC_STRUCT(lp_tess_eval_shader);
 116    if (!state)
 117       goto no_state;
 118
 119    /* debug */
 120    if (LP_DEBUG & DEBUG_TGSI) {
 121       debug_printf("llvmpipe: Create tess eval shader %p:\n", (void *)state);
 122       tgsi_dump(templ->tokens, 0);
 123    }
 124
 125    /* copy stream output info */
 126    state->no_tokens = !templ->tokens;
 127    memcpy(&state->stream_output, &templ->stream_output, sizeof state->stream_output);
 128
 129    if (templ->tokens || templ->type == PIPE_SHADER_IR_NIR) {
 130       state->dtes = draw_create_tess_eval_shader(llvmpipe->draw, templ);
 131       if (state->dtes == NULL) {
 132          goto no_dgs;
 133       }
 134    }
 135
 136    return state;
 137
 138 no_dgs:
 139    FREE( state );
 140 no_state:
 141    return NULL;
 142 }
 143
 144
 145 static void
 146 llvmpipe_bind_tes_state(struct pipe_context *pipe, void *tes)
 147 {
 148    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 149
 150    llvmpipe->tes = (struct lp_tess_eval_shader *)tes;
 151
 152    draw_bind_tess_eval_shader(llvmpipe->draw,
 153                               (llvmpipe->tes ? llvmpipe->tes->dtes : NULL));
 154
 155    llvmpipe->dirty |= LP_NEW_TES;
 156 }
 157
 158
 159 static void
 160 llvmpipe_delete_tes_state(struct pipe_context *pipe, void *tes)
 161 {
 162    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 163
 164    struct lp_tess_eval_shader *state =
 165       (struct lp_tess_eval_shader *)tes;
 166
 167    if (!state) {
 168       return;
 169    }
 170
 171    draw_delete_tess_eval_shader(llvmpipe->draw, state->dtes);
 172    FREE(state);
 173 }
 174
 175 static void
 176 llvmpipe_set_tess_state(struct pipe_context *pipe,
 177                         const float default_outer_level[4],
 178                         const float default_inner_level[2])
 179 {
 180    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 181    draw_set_tess_state(llvmpipe->draw, default_outer_level, default_inner_level);
 182 }
 183
 184 void
 185 llvmpipe_init_tess_funcs(struct llvmpipe_context *llvmpipe)
 186 {
 187    llvmpipe->pipe.create_tcs_state = llvmpipe_create_tcs_state;
 188    llvmpipe->pipe.bind_tcs_state   = llvmpipe_bind_tcs_state;
 189    llvmpipe->pipe.delete_tcs_state = llvmpipe_delete_tcs_state;
 190
 191    llvmpipe->pipe.create_tes_state = llvmpipe_create_tes_state;
 192    llvmpipe->pipe.bind_tes_state   = llvmpipe_bind_tes_state;
 193    llvmpipe->pipe.delete_tes_state = llvmpipe_delete_tes_state;
 194
 195    llvmpipe->pipe.set_tess_state = llvmpipe_set_tess_state;
 196 }