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
|
//
// Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Implementation of the state class for mananging GLES 3 Vertex Array Objects.
//
#include "libANGLE/VertexArray.h"
#include "libANGLE/Buffer.h"
#include "libANGLE/renderer/ImplFactory.h"
#include "libANGLE/renderer/VertexArrayImpl.h"
namespace gl
{
VertexArray::Data::Data(size_t maxAttribs)
: mLabel(), mVertexAttributes(maxAttribs), mMaxEnabledAttribute(0)
{
}
VertexArray::Data::~Data()
{
for (size_t i = 0; i < getMaxAttribs(); i++)
{
mVertexAttributes[i].buffer.set(nullptr);
}
mElementArrayBuffer.set(nullptr);
}
VertexArray::VertexArray(rx::ImplFactory *factory, GLuint id, size_t maxAttribs)
: mId(id),
mVertexArray(factory->createVertexArray(mData)),
mData(maxAttribs)
{
}
VertexArray::~VertexArray()
{
SafeDelete(mVertexArray);
}
GLuint VertexArray::id() const
{
return mId;
}
void VertexArray::setLabel(const std::string &label)
{
mData.mLabel = label;
}
const std::string &VertexArray::getLabel() const
{
return mData.mLabel;
}
void VertexArray::detachBuffer(GLuint bufferName)
{
for (size_t attribute = 0; attribute < getMaxAttribs(); attribute++)
{
if (mData.mVertexAttributes[attribute].buffer.id() == bufferName)
{
mData.mVertexAttributes[attribute].buffer.set(nullptr);
}
}
if (mData.mElementArrayBuffer.id() == bufferName)
{
mData.mElementArrayBuffer.set(nullptr);
}
}
const VertexAttribute &VertexArray::getVertexAttribute(size_t attributeIndex) const
{
ASSERT(attributeIndex < getMaxAttribs());
return mData.mVertexAttributes[attributeIndex];
}
void VertexArray::setVertexAttribDivisor(size_t index, GLuint divisor)
{
ASSERT(index < getMaxAttribs());
mData.mVertexAttributes[index].divisor = divisor;
mDirtyBits.set(DIRTY_BIT_ATTRIB_0_DIVISOR + index);
}
void VertexArray::enableAttribute(size_t attributeIndex, bool enabledState)
{
ASSERT(attributeIndex < getMaxAttribs());
mData.mVertexAttributes[attributeIndex].enabled = enabledState;
mDirtyBits.set(DIRTY_BIT_ATTRIB_0_ENABLED + attributeIndex);
// Update state cache
if (enabledState)
{
mData.mMaxEnabledAttribute = std::max(attributeIndex + 1, mData.mMaxEnabledAttribute);
}
else if (mData.mMaxEnabledAttribute == attributeIndex + 1)
{
while (mData.mMaxEnabledAttribute > 0 &&
!mData.mVertexAttributes[mData.mMaxEnabledAttribute - 1].enabled)
{
--mData.mMaxEnabledAttribute;
}
}
}
void VertexArray::setAttributeState(size_t attributeIndex, gl::Buffer *boundBuffer, GLint size, GLenum type,
bool normalized, bool pureInteger, GLsizei stride, const void *pointer)
{
ASSERT(attributeIndex < getMaxAttribs());
VertexAttribute *attrib = &mData.mVertexAttributes[attributeIndex];
attrib->buffer.set(boundBuffer);
attrib->size = size;
attrib->type = type;
attrib->normalized = normalized;
attrib->pureInteger = pureInteger;
attrib->stride = stride;
attrib->pointer = pointer;
mDirtyBits.set(DIRTY_BIT_ATTRIB_0_POINTER + attributeIndex);
}
void VertexArray::setElementArrayBuffer(Buffer *buffer)
{
mData.mElementArrayBuffer.set(buffer);
mDirtyBits.set(DIRTY_BIT_ELEMENT_ARRAY_BUFFER);
}
void VertexArray::syncImplState()
{
if (mDirtyBits.any())
{
mVertexArray->syncState(mDirtyBits);
mDirtyBits.reset();
}
}
}
|
