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
|
#include "UnityPrefix.h"
#include "TrailRenderer.h"
#include "Runtime/Input/TimeManager.h"
#include "Runtime/Graphics/Transform.h"
#include "Runtime/Camera/Camera.h"
#include "Runtime/GameCode/DestroyDelayed.h"
#include "Runtime/Serialize/TransferFunctions/SerializeTransfer.h"
#include "Runtime/BaseClasses/IsPlaying.h"
#include "Runtime/Camera/RenderManager.h"
#include "Runtime/Shaders/VBO.h"
#include "Runtime/GfxDevice/GfxDevice.h"
#include "Runtime/Profiler/Profiler.h"
const float kMinSqrDistance = 0.1f * 0.1f;
IMPLEMENT_CLASS_INIT_ONLY (TrailRenderer)
IMPLEMENT_OBJECT_SERIALIZE (TrailRenderer)
void TrailRenderer::InitializeClass ()
{
REGISTER_MESSAGE (TrailRenderer, kTransformChanged, TransformChanged, int);
}
TrailRenderer::TrailRenderer (MemLabelId label, ObjectCreationMode mode)
: Super(kRendererTrail, label, mode)
, m_TransformChanged(false)
, m_WasRendered(false)
, m_CurrentLength(0)
, m_Time(0)
, m_MinVertexDistance(0)
, m_Autodestruct(false)
{
m_AABB = MinMaxAABB (Vector3f::zero, Vector3f::zero);
}
TrailRenderer::~TrailRenderer ()
{
}
void TrailRenderer::Reset () {
Super::Reset ();
m_Colors[0].Set (255,255,255,255);
m_Colors[1].Set (255,255,255,255);
m_Colors[2].Set (255,255,255,255);
m_Colors[3].Set (255,255,255,255);
m_Colors[4].Set (255,255,255,0);
m_Time = 5.0f;
m_TransformChanged = true;
m_MinVertexDistance = 0.1F;
m_Positions.clear();
m_TimeStamps.clear();
}
void TrailRenderer::UpdateRenderer()
{
Super::UpdateRenderer();
float now = GetCurTime ();
// Remove last vertrices if neccessary
while (!m_TimeStamps.empty() && now > m_TimeStamps.back() + m_Time) {
m_Positions.pop_back();
m_TimeStamps.pop_back();
}
// Add a vertex to the object
if (m_TransformChanged) {
Vector3f position = GetComponent (Transform).GetPosition ();
if( m_Positions.empty () || SqrMagnitude (m_Positions.front () - position) > m_MinVertexDistance*m_MinVertexDistance )
{
m_Positions.push_front (position);
m_TimeStamps.push_front (now);
}
float halfWidth = GetHalfMaxLineWidth ();
AABB newPosAABB (m_Positions.front (), Vector3f(halfWidth, halfWidth, halfWidth));
// Expand the BBox with the new transform position.
m_AABB.Encapsulate (newPosAABB);
BoundsChanged ();
}
if (m_Positions.size() < 2) {
if (m_Autodestruct && m_WasRendered && IsWorldPlaying ())
DestroyObjectDelayed (GetGameObjectPtr());
}
else
m_WasRendered = true;
// Important: update manager state after calling any SetVisible() above. Fixes an issue
// where trails would stop be rendered when object is disabled or stops moving.
UpdateManagerState( true );
m_TransformChanged = false;
}
float TrailRenderer::GetHalfMaxLineWidth () const
{
return std::max (m_LineParameters.endWidth, m_LineParameters.startWidth) * 0.5f;
}
PROFILER_INFORMATION(gTrailRenderProfile, "TrailRenderer.Render", kProfilerRender)
PROFILER_INFORMATION(gSubmitVBOProfileTrail, "Mesh.SubmitVBO", kProfilerRender)
void TrailRenderer::Render (int materialIndex, const ChannelAssigns& channels)
{
PROFILER_AUTO(gTrailRenderProfile, this)
int size = m_Positions.size();
if( size < 2 )
return;
Vector3f* trailInVerts = NULL;
ALLOC_TEMP(trailInVerts, Vector3f, size);
int idx = 0;
for (std::list<Vector3f>::iterator j = m_Positions.begin(); j != m_Positions.end(); ++j, ++idx)
{
trailInVerts[idx] = *j;
}
trailInVerts[0] = GetComponent(Transform).GetPosition();
// Get VBO chunk
int stripCount = size * 2;
GfxDevice& device = GetGfxDevice();
DynamicVBO& vbo = device.GetDynamicVBO();
LineVertex* vbPtr;
if( !vbo.GetChunk( (1<<kShaderChannelVertex) | (1<<kShaderChannelTexCoord0) | (1<<kShaderChannelColor),
stripCount, 0,
DynamicVBO::kDrawTriangleStrip,
(void**)&vbPtr, NULL ) )
{
return;
}
// Generate line into the chunk
MinMaxAABB aabb;
m_LineParameters.outVertices = vbPtr;
m_LineParameters.gradient = &m_Colors;
m_LineParameters.cameraTransform = GetCurrentCamera().GetWorldToCameraMatrix();
m_LineParameters.outAABB = &aabb;
Build3DLine( &m_LineParameters, trailInVerts, size );
vbo.ReleaseChunk( stripCount, 0 );
aabb.Expand (GetHalfMaxLineWidth ());
if (!CompareMemory (m_AABB, aabb))
{
m_AABB = aabb;
BoundsChanged ();
}
// We can't set the view matrix since that breaks shadow maps (case 490315)
// Set the world matrix instead so it cancels out the usual view matrix
// i.e. it transforms from camera space back to world space
device.SetWorldMatrix(GetCurrentCamera().GetCameraToWorldMatrix().GetPtr());
if (m_CustomProperties)
device.SetMaterialProperties (*m_CustomProperties);
PROFILER_BEGIN(gSubmitVBOProfileTrail, this)
vbo.DrawChunk (channels);
GPU_TIMESTAMP();
PROFILER_END
}
void TrailRenderer::TransformChanged (int changeMask)
{
Renderer::TransformChanged (changeMask);
m_TransformChanged = true;
}
void TrailRenderer::UpdateTransformInfo()
{
const Transform& t = GetComponent (Transform);
TransformType type = t.CalculateTransformMatrix (m_TransformInfo.worldMatrix);
m_TransformInfo.transformType = type;
m_TransformInfo.invScale = 1.0f;
m_TransformInfo.worldAABB = m_AABB;
InverseTransformAABB( m_TransformInfo.worldAABB, t.GetPosition(), t.GetRotation(), m_TransformInfo.localAABB );
}
template<class TransferFunction> inline
void TrailRenderer::Transfer (TransferFunction& transfer) {
Super::Transfer (transfer);
transfer.Transfer (m_Time, "m_Time", kSimpleEditorMask);
transfer.Transfer (m_LineParameters.startWidth, "m_StartWidth", kSimpleEditorMask);
transfer.Transfer (m_LineParameters.endWidth, "m_EndWidth", kSimpleEditorMask);
TRANSFER_SIMPLE (m_Colors);
TRANSFER(m_MinVertexDistance);
transfer.Transfer (m_Autodestruct, "m_Autodestruct");
if (transfer.IsReading () && !m_Autodestruct)
m_WasRendered = false;
}
|
