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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
#include "egg/gfx/eggTextureBuffer.h"
#include "common.h"
#include "egg/gfx/eggCpuTexture.h"
#include "egg/gfx/eggStateGX.h"
#include "rvl/GX/GXTexture.h"
#include "rvl/GX/GXTypes.h"
namespace EGG {
TextureBuffer *TextureBuffer::spBufferTable[NUM_BUFFERS];
TextureBuffer::TextureBuffer() : mSize(0), mState(STATE_FREE), mpNext(nullptr), mpPrev(nullptr) {}
void TextureBuffer::configure() {
CapTexture::configure();
setClearColor(StateGX::getClearEfb());
setWrap(GX_CLAMP, GX_CLAMP);
setFilt(GX_LINEAR, GX_LINEAR);
setPixModeSync(true);
}
// Allow buffer to be reclaimed
void TextureBuffer::free() {
mState = STATE_FREE;
sBufferSize += mSize;
// Check if previous buffer is reclaimable
if (mpPrev != nullptr && mpPrev->mState == STATE_FREE) {
// Merge with previous buffer
mSize += mpPrev->mSize;
setBuffer((u8 *)getBuffer() - mpPrev->mSize);
// Append reusable buffer
TextureBuffer *beforeAppend = mpPrev->mpPrev;
append(mpPrev);
// Repair mpPrev link
mpPrev = beforeAppend;
if (beforeAppend != nullptr) {
beforeAppend->mpNext = this;
} else {
spHead = this;
}
}
// Check if next buffer is reclaimable
if (mpNext != nullptr && mpNext->mState == STATE_FREE) {
// Merge with next buffer
mSize += mpNext->mSize;
// Append reusable buffer
TextureBuffer *afterAppend = mpNext->mpNext;
append(mpNext);
// Repair mpNext link
mpNext = afterAppend;
if (afterAppend != nullptr) {
afterAppend->mpPrev = this;
}
}
}
// Alloc list buffer
void TextureBuffer::initialize(u32 size, Heap *heap_) {
Heap *heap = heap_ == nullptr ? Heap::getCurrentHeap() : heap_;
if (includesHeader()) {
size += 0x20;
}
sBufferAllSize = size;
spBufferAll = new (heap, 32) char[size];
if (includesHeader()) {
spBufferAll += 0x20;
}
sBufferSize = size;
sBufferRestSizeMin = size;
spTailNotJoin = nullptr;
for (int i = 0; i < NUM_BUFFERS; i++) {
spBufferTable[i] = new TextureBuffer();
spBufferTable[i]->configure();
append(spBufferTable[i]);
}
// Initialize head
spHead = getNotJoin();
spHead->mState = STATE_FREE;
spHead->mSize = size;
spHead->setBuffer(spBufferAll);
}
// Remove and return buffer at list end
TextureBuffer *TextureBuffer::getNotJoin() {
TextureBuffer *p_buffer = spTailNotJoin;
// Move list tail back
spTailNotJoin = spTailNotJoin->mpPrev;
if (spTailNotJoin != nullptr) {
spTailNotJoin->mpNext = nullptr;
}
// Pop old tail
p_buffer->mpPrev = nullptr;
return p_buffer;
}
// Attempt to alloc buffer of specified size
void TextureBuffer::alloc(u32 size) {
size = ROUND_UP(size, 0x20);
sBufferSize -= size;
if (sBufferSize < sBufferRestSizeMin) {
sBufferRestSizeMin = sBufferSize;
}
// Try to find a free buffer with at least the requested size
for (TextureBuffer *p_list = spHead; p_list != nullptr; p_list = p_list->mpNext) {
if (p_list->mState == STATE_FREE && p_list->mSize >= size) {
// Assign free buffer data to new buffer
mState = STATE_ALLOCED;
mSize = size;
u8 *buffer = (u8 *)p_list->getBuffer();
if (includesHeader()) {
setBuffer(buffer);
if (buffer != nullptr) {
setFlag(HAS_HEADER);
}
} else {
setBuffer(buffer);
}
// Prepend new buffer before old buffer
mpNext = p_list;
TextureBuffer *oldPrev = p_list->mpPrev;
mpPrev = oldPrev;
// Fix this->prev link
if (oldPrev != nullptr) {
oldPrev->mpNext = this;
} else {
// nullptr prev buffer must be list head
spHead = this;
}
// Remove requested size from old buffer
p_list->mSize -= size;
// Free old buffer if now empty
if (p_list->mSize == 0) {
if (p_list->mpNext != nullptr) {
p_list->mpNext->mpPrev = this;
}
mpNext = p_list->mpNext;
append(p_list);
}
// Adjust old buffer by requested size
else {
p_list->setBuffer(buffer + size);
p_list->mpPrev = this;
}
return;
}
}
}
TextureBuffer *TextureBuffer::alloc(u16 width, u16 height, GXTexFmt fmt) {
if (width == 0 || height == 0) {
return nullptr;
}
TextureBuffer *tex = getNotJoin();
tex->setWidth(width);
tex->setHeight(height);
tex->setFormat(fmt);
tex->configure();
tex->alloc(GXGetTexBufferSize(tex->getWidth(), tex->getHeight(), tex->getFormat(), false, 1));
return tex;
}
void TextureBuffer::setIncludesHeader(bool b) {
sIncludesHeader = b;
}
bool TextureBuffer::includesHeader() {
return sIncludesHeader;
}
TextureBuffer *TextureBuffer::spHead;
TextureBuffer *TextureBuffer::spTailNotJoin;
char *TextureBuffer::spBufferAll;
u32 TextureBuffer::sBufferAllSize;
u32 TextureBuffer::sBufferSize;
u32 TextureBuffer::sBufferRestSizeMin;
bool TextureBuffer::sIncludesHeader;
} // namespace EGG
|
