1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
* Mesa 3-D graphics library
* Version: 7.8
*
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
*
* 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.
*/
/**
* \file condrender.c
* Conditional rendering functions
*
* \author Brian Paul
*/
#include "glheader.h"
#include "condrender.h"
#include "enums.h"
#include "queryobj.h"
GLAPI void GLAPIENTRY
_mesa_BeginConditionalRender(GLuint queryId, GLenum mode)
{
struct gl_query_object *q;
GET_CURRENT_CONTEXT(ctx);
if (!ctx->Extensions.NV_conditional_render || ctx->Query.CondRenderQuery) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBeginConditionalRender()");
return;
}
ASSERT(ctx->Query.CondRenderMode == GL_NONE);
switch (mode) {
case GL_QUERY_WAIT:
case GL_QUERY_NO_WAIT:
case GL_QUERY_BY_REGION_WAIT:
case GL_QUERY_BY_REGION_NO_WAIT:
/* OK */
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glBeginConditionalRender(mode=%s)",
_mesa_lookup_enum_by_nr(mode));
return;
}
q = _mesa_lookup_query_object(ctx, queryId);
if (!q) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glBeginConditionalRender(bad queryId=%u)", queryId);
return;
}
ASSERT(q->Id == queryId);
if (q->Target != GL_SAMPLES_PASSED) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBeginConditionalRender()");
return;
}
ctx->Query.CondRenderQuery = q;
ctx->Query.CondRenderMode = mode;
if (ctx->Driver.BeginConditionalRender)
ctx->Driver.BeginConditionalRender(ctx, q, mode);
}
GLAPI void APIENTRY
_mesa_EndConditionalRender(void)
{
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0x0);
if (!ctx->Extensions.NV_conditional_render || !ctx->Query.CondRenderQuery) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glEndConditionalRender()");
return;
}
if (ctx->Driver.EndConditionalRender)
ctx->Driver.EndConditionalRender(ctx, ctx->Query.CondRenderQuery);
ctx->Query.CondRenderQuery = NULL;
ctx->Query.CondRenderMode = GL_NONE;
}
/**
* This function is called by software rendering commands (all point,
* line triangle drawing, glClear, glDrawPixels, glCopyPixels, and
* glBitmap, glBlitFramebuffer) to determine if subsequent drawing
* commands should be
* executed or discarded depending on the current conditional
* rendering state. Ideally, this check would be implemented by the
* GPU when doing hardware rendering. XXX should this function be
* called via a new driver hook?
*
* \return GL_TRUE if we should render, GL_FALSE if we should discard
*/
GLboolean
_mesa_check_conditional_render(GLcontext *ctx)
{
struct gl_query_object *q = ctx->Query.CondRenderQuery;
if (!q) {
/* no query in progress - draw normally */
return GL_TRUE;
}
switch (ctx->Query.CondRenderMode) {
case GL_QUERY_BY_REGION_WAIT:
/* fall-through */
case GL_QUERY_WAIT:
if (!q->Ready) {
ctx->Driver.WaitQuery(ctx, q);
}
return q->Result > 0;
case GL_QUERY_BY_REGION_NO_WAIT:
/* fall-through */
case GL_QUERY_NO_WAIT:
return q->Ready ? (q->Result > 0) : GL_TRUE;
default:
_mesa_problem(ctx, "Bad cond render mode %s in "
" _mesa_check_conditional_render()",
_mesa_lookup_enum_by_nr(ctx->Query.CondRenderMode));
return GL_TRUE;
}
}
|
