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
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGLVertexArray.h"
#include "GrGLBuffer.h"
#include "GrGLGpu.h"
struct AttribLayout {
bool fNormalized; // Only used by floating point types.
uint8_t fCount;
uint16_t fType;
};
GR_STATIC_ASSERT(4 == sizeof(AttribLayout));
static AttribLayout attrib_layout(GrVertexAttribType type) {
switch (type) {
case kFloat_GrVertexAttribType:
return {false, 1, GR_GL_FLOAT};
case kVec2f_GrVertexAttribType:
return {false, 2, GR_GL_FLOAT};
case kVec3f_GrVertexAttribType:
return {false, 3, GR_GL_FLOAT};
case kVec4f_GrVertexAttribType:
return {false, 4, GR_GL_FLOAT};
case kVec2i_GrVertexAttribType:
return {false, 2, GR_GL_INT};
case kVec3i_GrVertexAttribType:
return {false, 3, GR_GL_INT};
case kVec4i_GrVertexAttribType:
return {false, 4, GR_GL_INT};
case kUByte_GrVertexAttribType:
return {true, 1, GR_GL_UNSIGNED_BYTE};
case kVec4ub_GrVertexAttribType:
return {true, 4, GR_GL_UNSIGNED_BYTE};
case kVec2us_GrVertexAttribType:
return {true, 2, GR_GL_UNSIGNED_SHORT};
case kInt_GrVertexAttribType:
return {false, 1, GR_GL_INT};
case kUint_GrVertexAttribType:
return {false, 1, GR_GL_UNSIGNED_INT};
}
SkFAIL("Unknown vertex attrib type");
return {false, 0, 0};
};
void GrGLAttribArrayState::set(GrGLGpu* gpu,
int index,
const GrBuffer* vertexBuffer,
GrVertexAttribType type,
GrGLsizei stride,
GrGLvoid* offset) {
SkASSERT(index >= 0 && index < fAttribArrayStates.count());
AttribArrayState* array = &fAttribArrayStates[index];
if (!array->fEnableIsValid || !array->fEnabled) {
GR_GL_CALL(gpu->glInterface(), EnableVertexAttribArray(index));
array->fEnableIsValid = true;
array->fEnabled = true;
}
if (array->fVertexBufferUniqueID != vertexBuffer->uniqueID() ||
array->fType != type ||
array->fStride != stride ||
array->fOffset != offset) {
gpu->bindBuffer(kVertex_GrBufferType, vertexBuffer);
const AttribLayout& layout = attrib_layout(type);
if (!GrVertexAttribTypeIsIntType(type)) {
GR_GL_CALL(gpu->glInterface(), VertexAttribPointer(index,
layout.fCount,
layout.fType,
layout.fNormalized,
stride,
offset));
} else {
SkASSERT(gpu->caps()->shaderCaps()->integerSupport());
SkASSERT(!layout.fNormalized);
GR_GL_CALL(gpu->glInterface(), VertexAttribIPointer(index,
layout.fCount,
layout.fType,
stride,
offset));
}
array->fVertexBufferUniqueID = vertexBuffer->uniqueID();
array->fType = type;
array->fStride = stride;
array->fOffset = offset;
}
}
void GrGLAttribArrayState::disableUnusedArrays(const GrGLGpu* gpu, uint64_t usedMask) {
int count = fAttribArrayStates.count();
for (int i = 0; i < count; ++i) {
if (!(usedMask & 0x1)) {
if (!fAttribArrayStates[i].fEnableIsValid || fAttribArrayStates[i].fEnabled) {
GR_GL_CALL(gpu->glInterface(), DisableVertexAttribArray(i));
fAttribArrayStates[i].fEnableIsValid = true;
fAttribArrayStates[i].fEnabled = false;
}
} else {
SkASSERT(fAttribArrayStates[i].fEnableIsValid && fAttribArrayStates[i].fEnabled);
}
// if the count is greater than 64 then this will become 0 and we will disable arrays 64+.
usedMask >>= 1;
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
GrGLVertexArray::GrGLVertexArray(GrGLint id, int attribCount)
: fID(id)
, fAttribArrays(attribCount)
, fIndexBufferUniqueID(SK_InvalidUniqueID) {
}
GrGLAttribArrayState* GrGLVertexArray::bind(GrGLGpu* gpu) {
if (0 == fID) {
return nullptr;
}
gpu->bindVertexArray(fID);
return &fAttribArrays;
}
GrGLAttribArrayState* GrGLVertexArray::bindWithIndexBuffer(GrGLGpu* gpu, const GrBuffer* ibuff) {
GrGLAttribArrayState* state = this->bind(gpu);
if (state && fIndexBufferUniqueID != ibuff->uniqueID()) {
if (ibuff->isCPUBacked()) {
GR_GL_CALL(gpu->glInterface(), BindBuffer(GR_GL_ELEMENT_ARRAY_BUFFER, 0));
} else {
const GrGLBuffer* glBuffer = static_cast<const GrGLBuffer*>(ibuff);
GR_GL_CALL(gpu->glInterface(), BindBuffer(GR_GL_ELEMENT_ARRAY_BUFFER,
glBuffer->bufferID()));
}
fIndexBufferUniqueID = ibuff->uniqueID();
}
return state;
}
void GrGLVertexArray::invalidateCachedState() {
fAttribArrays.invalidate();
fIndexBufferUniqueID.makeInvalid();
}
|
