1 /* 2 * Copyright © 2014 Broadcom 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 /** 25 * Stub support for occlusion queries. 26 * 27 * Since we expose support for GL 2.0, we have to expose occlusion queries, 28 * but the spec allows you to expose 0 query counter bits, so we just return 0 29 * as the result of all our queries. 30 */ 31 #include "vc4_context.h" 32 33 struct vc4_query 34 { 35 uint8_t pad; 36 }; 37 38 static struct pipe_query * 39 vc4_create_query(struct pipe_context *ctx, unsigned query_type, unsigned index) 40 { 41 struct vc4_query *query = calloc(1, sizeof(*query)); 42 43 /* Note that struct pipe_query isn't actually defined anywhere. */ 44 return (struct pipe_query *)query; 45 } 46 47 static void 48 vc4_destroy_query(struct pipe_context *ctx, struct pipe_query *query) 49 { 50 free(query); 51 } 52 53 static boolean 54 vc4_begin_query(struct pipe_context *ctx, struct pipe_query *query) 55 { 56 return true; 57 } 58 59 static bool 60 vc4_end_query(struct pipe_context *ctx, struct pipe_query *query) 61 { 62 return true; 63 } 64 65 static boolean 66 vc4_get_query_result(struct pipe_context *ctx, struct pipe_query *query, 67 boolean wait, union pipe_query_result *vresult) 68 { 69 uint64_t *result = &vresult->u64; 70 71 *result = 0; 72 73 return true; 74 } 75 76 static void 77 vc4_set_active_query_state(struct pipe_context *pipe, boolean enable) 78 { 79 } 80 81 void 82 vc4_query_init(struct pipe_context *pctx) 83 { 84 pctx->create_query = vc4_create_query; 85 pctx->destroy_query = vc4_destroy_query; 86 pctx->begin_query = vc4_begin_query; 87 pctx->end_query = vc4_end_query; 88 pctx->get_query_result = vc4_get_query_result; 89 pctx->set_active_query_state = vc4_set_active_query_state; 90 } 91 92