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
|
/*
* Copyright (C) 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_PROGRAM_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_PROGRAM_H_
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/modules/webgl/webgl_shader.h"
#include "third_party/blink/renderer/modules/webgl/webgl_shared_platform_3d_object.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_member.h"
namespace blink {
class WebGLProgram final : public WebGLSharedPlatform3DObject {
DEFINE_WRAPPERTYPEINFO();
public:
~WebGLProgram() override;
static WebGLProgram* Create(WebGLRenderingContextBase*);
bool LinkStatus(WebGLRenderingContextBase*);
unsigned LinkCount() const { return link_count_; }
// This is to be called everytime after the program is successfully linked.
// We don't deal with integer overflow here, assuming in reality a program
// will never be linked so many times.
// Also, we invalidate the cached program info.
void IncreaseLinkCount();
unsigned ActiveTransformFeedbackCount() const {
return active_transform_feedback_count_;
}
void IncreaseActiveTransformFeedbackCount();
void DecreaseActiveTransformFeedbackCount();
void SetRequiredTransformFeedbackBufferCount(int count) {
required_transform_feedback_buffer_count_after_next_link_ = count;
}
int GetRequiredTransformFeedbackBufferCount(
WebGLRenderingContextBase* context) {
CacheInfoIfNeeded(context);
return required_transform_feedback_buffer_count_;
}
WebGLShader* GetAttachedShader(GLenum);
bool AttachShader(WebGLShader*);
bool DetachShader(WebGLShader*);
void Trace(blink::Visitor*) override;
protected:
explicit WebGLProgram(WebGLRenderingContextBase*);
void DeleteObjectImpl(gpu::gles2::GLES2Interface*) override;
private:
bool IsProgram() const override { return true; }
void CacheInfoIfNeeded(WebGLRenderingContextBase*);
GLint link_status_;
// This is used to track whether a WebGLUniformLocation belongs to this
// program or not.
unsigned link_count_;
// This is used to track the program being used by active transform
// feedback objects.
unsigned active_transform_feedback_count_;
TraceWrapperMember<WebGLShader> vertex_shader_;
TraceWrapperMember<WebGLShader> fragment_shader_;
bool info_valid_;
// The number of transform feedback buffers this program will write to.
int required_transform_feedback_buffer_count_;
int required_transform_feedback_buffer_count_after_next_link_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_PROGRAM_H_
|
