diff options
Diffstat (limited to 'src/gallium/drivers/vc4/vc4_query.c')
-rw-r--r-- | src/gallium/drivers/vc4/vc4_query.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_query.c b/src/gallium/drivers/vc4/vc4_query.c new file mode 100644 index 00000000000..1792becb08f --- /dev/null +++ b/src/gallium/drivers/vc4/vc4_query.c @@ -0,0 +1,83 @@ +/* + * Copyright © 2014 Broadcom + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +/** + * Stub support for occlusion queries. + * + * Since we expose support for GL 2.0, we have to expose occlusion queries, + * but the spec allows you to expose 0 query counter bits, so we just return 0 + * as the result of all our queries. + */ +#include "vc4_context.h" + +struct vc4_query +{ + uint8_t pad; +}; + +static struct pipe_query * +vc4_create_query(struct pipe_context *ctx, unsigned query_type, unsigned index) +{ + struct vc4_query *query = calloc(1, sizeof(*query)); + + /* Note that struct pipe_query isn't actually defined anywhere. */ + return (struct pipe_query *)query; +} + +static void +vc4_destroy_query(struct pipe_context *ctx, struct pipe_query *query) +{ + free(query); +} + +static void +vc4_begin_query(struct pipe_context *ctx, struct pipe_query *query) +{ +} + +static void +vc4_end_query(struct pipe_context *ctx, struct pipe_query *query) +{ +} + +static boolean +vc4_get_query_result(struct pipe_context *ctx, struct pipe_query *query, + boolean wait, union pipe_query_result *vresult) +{ + uint64_t *result = &vresult->u64; + + *result = 0; + + return true; +} + +void +vc4_query_init(struct pipe_context *pctx) +{ + pctx->create_query = vc4_create_query; + pctx->destroy_query = vc4_destroy_query; + pctx->begin_query = vc4_begin_query; + pctx->end_query = vc4_end_query; + pctx->get_query_result = vc4_get_query_result; +} + |