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
|
#include "UnityPrefix.h"
#include "NullVBO.h"
#include "UnityGL.h"
#include "Runtime/GfxDevice/GfxDevice.h"
#include "ChannelsGL.h"
extern GLenum kTopologyGL[kPrimitiveTypeCount];
DynamicNullVBO::DynamicNullVBO()
: DynamicVBO()
, m_VBChunk(NULL)
, m_VBChunkSize(0)
, m_IBChunk(NULL)
, m_IBChunkSize(0)
{
}
DynamicNullVBO::~DynamicNullVBO ()
{
delete[] m_VBChunk;
delete[] m_IBChunk;
}
void DynamicNullVBO::DrawChunk (const ChannelAssigns& channels)
{
// just return if nothing to render
if( !m_LastChunkShaderChannelMask )
return;
Assert(m_LastChunkShaderChannelMask && m_LastChunkStride);
Assert(!m_LendedChunk);
// setup VBO
UnbindVertexBuffersGL();
ClearActiveChannelsGL();
UInt32 targetMap = channels.GetTargetMap();
for( int i = 0; i < kVertexCompCount; ++i )
{
if( !( targetMap & (1<<i) ) )
continue;
ShaderChannel src = channels.GetSourceForTarget( (VertexComponent)i );
if( !( m_LastChunkShaderChannelMask & (1<<src) ) )
continue;
SetChannelDataGL( src, (VertexComponent)i, (UInt8*)m_BufferChannel[src], m_LastChunkStride );
}
GfxDevice& device = GetRealGfxDevice();
ActivateChannelsGL();
device.BeforeDrawCall( false );
// draw
int primCount = 0;
if( m_LastRenderMode == kDrawTriangleStrip )
{
Assert(m_LastChunkIndices == 0);
OGL_CALL(glDrawArrays( GL_TRIANGLE_STRIP, 0, m_LastChunkVertices ));
primCount = m_LastChunkVertices-2;
}
else if (m_LastRenderMode == kDrawQuads)
{
Assert(m_LastChunkIndices == 0);
OGL_CALL(glDrawArrays( GL_QUADS, 0, m_LastChunkVertices ));
primCount = m_LastChunkVertices/2;
}
else if (m_LastRenderMode == kDrawIndexedTriangleStrip)
{
DebugAssert(m_LastChunkIndices > 0);
OGL_CALL(glDrawElements( GL_TRIANGLE_STRIP, m_LastChunkIndices, GL_UNSIGNED_SHORT, m_IBChunk ));
primCount = m_LastChunkIndices-2;
}
else if (m_LastRenderMode == kDrawIndexedLines)
{
DebugAssert(m_LastChunkIndices > 0);
OGL_CALL(glDrawElements( GL_LINES, m_LastChunkIndices, GL_UNSIGNED_SHORT, m_IBChunk ));
primCount = m_LastChunkIndices/2;
}
else if (m_LastRenderMode == kDrawIndexedPoints)
{
DebugAssert(m_LastChunkIndices > 0);
OGL_CALL(glDrawElements( GL_POINTS, m_LastChunkIndices, GL_UNSIGNED_SHORT, m_IBChunk ));
primCount = m_LastChunkIndices;
}
else
{
DebugAssert(m_LastChunkIndices > 0);
OGL_CALL(glDrawElements( GL_TRIANGLES, m_LastChunkIndices, GL_UNSIGNED_SHORT, m_IBChunk ));
primCount = m_LastChunkIndices/3;
}
device.GetFrameStats().AddDrawCall (primCount, m_LastChunkVertices);
}
bool DynamicNullVBO::GetChunk( UInt32 shaderChannelMask, UInt32 maxVertices, UInt32 maxIndices, RenderMode renderMode, void** outVB, void** outIB )
{
Assert( !m_LendedChunk );
Assert( maxVertices < 65536 && maxIndices < 65536*3 );
DebugAssert( outVB != NULL && maxVertices > 0 );
DebugAssert(
(renderMode == kDrawIndexedQuads && (outIB != NULL && maxIndices > 0)) ||
(renderMode == kDrawIndexedPoints && (outIB != NULL && maxIndices > 0)) ||
(renderMode == kDrawIndexedLines && (outIB != NULL && maxIndices > 0)) ||
(renderMode == kDrawIndexedTriangles && (outIB != NULL && maxIndices > 0)) ||
(renderMode == kDrawIndexedTriangleStrip && (outIB != NULL && maxIndices > 0)) ||
(renderMode == kDrawTriangleStrip && (outIB == NULL && maxIndices == 0)) ||
(renderMode == kDrawQuads && (outIB == NULL && maxIndices == 0)));
m_LendedChunk = true;
m_LastChunkShaderChannelMask = shaderChannelMask;
m_LastRenderMode = renderMode;
if( maxVertices == 0 )
maxVertices = 8;
m_LastChunkStride = 0;
for( int i = 0; i < kShaderChannelCount; ++i ) {
if( shaderChannelMask & (1<<i) )
m_LastChunkStride += VBO::GetDefaultChannelByteSize(i);
}
UInt32 vbCapacity = maxVertices * m_LastChunkStride;
if( vbCapacity > m_VBChunkSize )
{
delete[] m_VBChunk;
m_VBChunk = new UInt8[ vbCapacity ];
m_VBChunkSize = vbCapacity;
}
*outVB = m_VBChunk;
const bool indexed = (renderMode != kDrawQuads) && (renderMode != kDrawTriangleStrip);
if( maxIndices && indexed)
{
UInt32 ibCapacity = maxIndices * kVBOIndexSize;
if( ibCapacity > m_IBChunkSize )
{
delete[] m_IBChunk;
m_IBChunk = new UInt8[ ibCapacity ];
m_IBChunkSize = ibCapacity;
}
*outIB = m_IBChunk;
}
return true;
}
void DynamicNullVBO::ReleaseChunk( UInt32 actualVertices, UInt32 actualIndices )
{
Assert( m_LendedChunk );
Assert( m_LastRenderMode == kDrawIndexedTriangleStrip || m_LastRenderMode == kDrawIndexedQuads || m_LastRenderMode == kDrawIndexedPoints || m_LastRenderMode == kDrawIndexedLines || actualIndices % 3 == 0 );
m_LendedChunk = false;
m_LastChunkVertices = actualVertices;
m_LastChunkIndices = actualIndices;
const bool indexed = (m_LastRenderMode != kDrawQuads) && (m_LastRenderMode != kDrawTriangleStrip);
if( !actualVertices || (indexed && !actualIndices) ) {
m_LastChunkShaderChannelMask = 0;
return;
}
UInt8* channelOffset = (UInt8*)m_VBChunk;
for( int i = 0; i < kShaderChannelCount; ++i ) {
if( m_LastChunkShaderChannelMask & (1<<i) ) {
m_BufferChannel[i] = channelOffset;
channelOffset += VBO::GetDefaultChannelByteSize(i);
}
}
}
|
