src/gallium/drivers/i915/i915_query.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2011 The Chromium OS authors.
   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
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  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL GOOGLE AND/OR ITS SUPPLIERS BE LIABLE FOR
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /* Fake occlusion queries which return 0, it's better than crashing */
  29
  30 #include "pipe/p_compiler.h"
  31
  32 #include "util/u_memory.h"
  33
  34 #include "i915_context.h"
  35 #include "i915_query.h"
  36
  37 struct i915_query
  38 {
  39    unsigned query;
  40 };
  41
  42 static struct pipe_query *i915_create_query(struct pipe_context *ctx,
  43                                             unsigned query_type,
  44                                             unsigned index)
  45 {
  46    struct i915_query *query = CALLOC_STRUCT( i915_query );
  47
  48    return (struct pipe_query *)query;
  49 }
  50
  51 static void i915_destroy_query(struct pipe_context *ctx,
  52                                struct pipe_query *query)
  53 {
  54    FREE(query);
  55 }
  56
  57 static boolean i915_begin_query(struct pipe_context *ctx,
  58                              struct pipe_query *query)
  59 {
  60    return true;
  61 }
  62
  63 static bool i915_end_query(struct pipe_context *ctx, struct pipe_query *query)
  64 {
  65    return true;
  66 }
  67
  68 static boolean i915_get_query_result(struct pipe_context *ctx,
  69                                      struct pipe_query *query,
  70                                      boolean wait,
  71                                      union pipe_query_result *vresult)
  72 {
  73    uint64_t *result = (uint64_t*)vresult;
  74
  75    /* 2* viewport Max */
  76    *result = 512*1024*1024;
  77    return TRUE;
  78 }
  79
  80 static void
  81 i915_set_active_query_state(struct pipe_context *pipe, boolean enable)
  82 {
  83 }
  84
  85 void
  86 i915_init_query_functions(struct i915_context *i915)
  87 {
  88    i915->base.create_query = i915_create_query;
  89    i915->base.destroy_query = i915_destroy_query;
  90    i915->base.begin_query = i915_begin_query;
  91    i915->base.end_query = i915_end_query;
  92    i915->base.get_query_result = i915_get_query_result;
  93    i915->base.set_active_query_state = i915_set_active_query_state;
  94 }
  95