宝爷Debug小记——Cocos2d-x(3.13之前的版本)底层BUG导致Spine渲染花屏
最近在工作中碰到不少棘手的BUG,其中的一个是Spine骨骼的渲染花屏,在战斗中派发出大量士兵之后有概率出现花屏闪烁(如下图所示),这种莫名奇妙且难以重现的BUG最为蛋疼。
static int skiptype = ;
void SkeletonRenderer::draw (Renderer* renderer, const Mat4& transform, uint32_t transformFlags) {
SkeletonBatch* batch = SkeletonBatch::getInstance(); for (auto t : _curTriangles)
{
TrianglesMgr::getInstance()->freeTriangles(t);
}
_curTriangles.clear();
_triCmds.clear(); Color3B nodeColor = getColor();
_skeleton->r = nodeColor.r / (float);
_skeleton->g = nodeColor.g / (float);
_skeleton->b = nodeColor.b / (float);
_skeleton->a = getDisplayedOpacity() / (float); Color4F color;
AttachmentVertices* attachmentVertices = nullptr;
for (int i = , n = _skeleton->slotsCount; i < n; ++i) {
spSlot* slot = _skeleton->drawOrder[i];
if (!slot->attachment) continue;
if (slot->attachment->type == skiptype) continue;
switch (slot->attachment->type) {
case SP_ATTACHMENT_REGION: {
spRegionAttachment* attachment = (spRegionAttachment*)slot->attachment;
spRegionAttachment_computeWorldVertices(attachment, slot->bone, _worldVertices);
attachmentVertices = getAttachmentVertices(attachment);
color.r = attachment->r;
color.g = attachment->g;
color.b = attachment->b;
color.a = attachment->a;
break;
}
case SP_ATTACHMENT_MESH: {
spMeshAttachment* attachment = (spMeshAttachment*)slot->attachment;
spMeshAttachment_computeWorldVertices(attachment, slot, _worldVertices);
attachmentVertices = getAttachmentVertices(attachment);
color.r = attachment->r;
color.g = attachment->g;
color.b = attachment->b;
color.a = attachment->a;
break;
}
default:
void Renderer::processRenderCommand(RenderCommand* command)
{
auto commandType = command->getType();
if( RenderCommand::Type::TRIANGLES_COMMAND == commandType)
{
// flush other queues
flush3D(); auto cmd = static_cast<TrianglesCommand*>(command); // flush own queue when buffer is full
if(_filledVertex + cmd->getVertexCount() > VBO_SIZE || _filledIndex + cmd->getIndexCount() > INDEX_VBO_SIZE)
{
CCASSERT(cmd->getVertexCount()>= && cmd->getVertexCount() < VBO_SIZE, "VBO for vertex is not big enough, please break the data down or use customized render command");
CCASSERT(cmd->getIndexCount()>= && cmd->getIndexCount() < INDEX_VBO_SIZE, "VBO for index is not big enough, please break the data down or use customized render command");
drawBatchedTriangles();
} // queue it
_queuedTriangleCommands.push_back(cmd);
_filledIndex += cmd->getIndexCount();
_filledVertex += cmd->getVertexCount();
}
// 增加一些调试用的静态变量
static bool __dbg = false;
static bool __deepDbg = false;
static int __cmdCount = ;
static int __curCmdCount = ;
static int __idxCount = ;
static int __vexCount = ;
static int __maxidx = ;
void Renderer::fillVerticesAndIndices(const TrianglesCommand* cmd)
{
memcpy(&_verts[_filledVertex], cmd->getVertices(), sizeof(V3F_C4B_T2F) * cmd->getVertexCount()); // fill vertex, and convert them to world coordinates
const Mat4& modelView = cmd->getModelView();
for(ssize_t i=; i < cmd->getVertexCount(); ++i)
{
modelView.transformPoint(&(_verts[i + _filledVertex].vertices));
// 打印所有顶点的xyz和纹理uv
if(__dbg && __deepDbg)
{
CCLOG("vertex %d is xyz %.2f,%.2f,%.2f uv %.2f,%.2f", i + _filledVertex - __vexCount,_verts[i + _filledVertex].vertices.x,
_verts[i + _filledVertex].vertices.y, _verts[i + _filledVertex].vertices.z,
_verts[i + _filledVertex].texCoords.u, _verts[i + _filledVertex].texCoords.v);
}
} // fill index
const unsigned short* indices = cmd->getIndices();
for(ssize_t i=; i< cmd->getIndexCount(); ++i)
{
_indices[_filledIndex + i] = _filledVertex + indices[i];
if (__dbg)
{
if (__maxidx < _indices[_filledIndex + i])
{
__maxidx = _indices[_filledIndex + i];
}
if (__deepDbg)
{
CCLOG("index %d is %d", _filledIndex + i - __idxCount, _indices[_filledIndex + i] - __vexCount);
}
}
} _filledVertex += cmd->getVertexCount();
_filledIndex += cmd->getIndexCount();
} void Renderer::drawBatchedTriangles()
{
if(_queuedTriangleCommands.empty())
return; CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_BATCH_TRIANGLES"); if (__dbg)
{
__vexCount = ;
__idxCount = ;
__curCmdCount = ;
}
_filledVertex = ;
_filledIndex = ; /************** 1: Setup up vertices/indices *************/ _triBatchesToDraw[].offset = ;
_triBatchesToDraw[].indicesToDraw = ;
_triBatchesToDraw[].cmd = nullptr; int batchesTotal = ;
int prevMaterialID = -;
bool firstCommand = true; for(auto it = std::begin(_queuedTriangleCommands); it != std::end(_queuedTriangleCommands); ++it)
{
const auto& cmd = *it;
auto currentMaterialID = cmd->getMaterialID();
const bool batchable = !cmd->isSkipBatching();
if (__dbg)
{
if (__curCmdCount % __cmdCount == )
{
CCLOG("begin %d =====================================", __curCmdCount / __cmdCount);
__vexCount = _filledVertex;
__idxCount = _filledIndex;
}
++__curCmdCount;
}
fillVerticesAndIndices(cmd); // in the same batch ?
if (batchable && (prevMaterialID == currentMaterialID || firstCommand))
{
CC_ASSERT(firstCommand || _triBatchesToDraw[batchesTotal].cmd->getMaterialID() == cmd->getMaterialID() && "argh... error in logic");
_triBatchesToDraw[batchesTotal].indicesToDraw += cmd->getIndexCount();
_triBatchesToDraw[batchesTotal].cmd = cmd;
}
else
{
// is this the first one?
if (!firstCommand) {
batchesTotal++;
_triBatchesToDraw[batchesTotal].offset = _triBatchesToDraw[batchesTotal-].offset + _triBatchesToDraw[batchesTotal-].indicesToDraw;
} _triBatchesToDraw[batchesTotal].cmd = cmd;
_triBatchesToDraw[batchesTotal].indicesToDraw = (int) cmd->getIndexCount(); // is this a single batch ? Prevent creating a batch group then
if (!batchable)
currentMaterialID = -;
} // capacity full ?
if (batchesTotal + >= _triBatchesToDrawCapacity) {
_triBatchesToDrawCapacity *= 1.4;
_triBatchesToDraw = (TriBatchToDraw*) realloc(_triBatchesToDraw, sizeof(_triBatchesToDraw[]) * _triBatchesToDrawCapacity);
} prevMaterialID = currentMaterialID;
firstCommand = false;
}
batchesTotal++;
if (__dbg)
{
CCLOG("MAX IDX %d", __maxidx);
}
__dbg = false;
for (int i=; i<batchesTotal; ++i)
{
CC_ASSERT(_triBatchesToDraw[i].cmd && "Invalid batch");
_triBatchesToDraw[i].cmd->useMaterial();
glDrawElements(GL_TRIANGLES, (GLsizei) _triBatchesToDraw[i].indicesToDraw, GL_UNSIGNED_SHORT, (GLvoid*) (_triBatchesToDraw[i].offset*sizeof(_indices[])) );
_drawnBatches++;
_drawnVertices += _triBatchesToDraw[i].indicesToDraw;
}
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