diff options
Diffstat (limited to 'indra/llrender/llvertexbuffer.cpp')
| -rw-r--r-- | indra/llrender/llvertexbuffer.cpp | 326 |
1 files changed, 210 insertions, 116 deletions
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp index e1352691d4..c1ffe6957a 100644 --- a/indra/llrender/llvertexbuffer.cpp +++ b/indra/llrender/llvertexbuffer.cpp @@ -273,7 +273,189 @@ static GLWorkQueue* sQueue = nullptr; #endif //============================================================================ +// Pool of reusable VertexBuffer state +// batch calls to glGenBuffers +static GLuint gen_buffer() +{ + LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; + constexpr U32 pool_size = 4096; + + thread_local static GLuint sNamePool[pool_size]; + thread_local static U32 sIndex = 0; + + if (sIndex == 0) + { + LL_PROFILE_ZONE_NAMED_CATEGORY_VERTEX("gen buffer"); + sIndex = pool_size; + glGenBuffers(pool_size, sNamePool); + } + + return sNamePool[--sIndex]; +} + +class LLVBOPool +{ +public: + typedef std::chrono::steady_clock::time_point Time; + + struct Entry + { + U8* mData; + GLuint mGLName; + Time mAge; + }; + + ~LLVBOPool() + { + clear(); + } + + typedef std::unordered_map<U32, std::list<Entry>> Pool; + + Pool mVBOPool; + Pool mIBOPool; + + U32 mMissCount = 0; + + void allocate(GLenum type, U32 size, GLuint& name, U8*& data) + { + LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; + + size = nhpo2(size); + + auto& pool = type == GL_ELEMENT_ARRAY_BUFFER ? mIBOPool : mVBOPool; + + auto& iter = pool.find(size); + if (iter == pool.end()) + { // cache miss, allocate a new buffer + LL_PROFILE_ZONE_NAMED_CATEGORY_VERTEX("vbo pool miss"); + LL_PROFILE_GPU_ZONE("vbo alloc"); + + ++mMissCount; + if (mMissCount > 1024) + { //clean cache on every 1024 misses + mMissCount = 0; + clean(); + } + + name = gen_buffer(); + glBindBuffer(type, name); + glBufferData(type, size, nullptr, GL_DYNAMIC_DRAW); + if (type == GL_ELEMENT_ARRAY_BUFFER) + { + LLVertexBuffer::sGLRenderIndices = name; + } + else + { + LLVertexBuffer::sGLRenderBuffer = name; + } + + data = (U8*)ll_aligned_malloc_16(size); + } + else + { + std::list<Entry>& entries = iter->second; + Entry& entry = entries.back(); + name = entry.mGLName; + data = entry.mData; + + entries.pop_back(); + if (entries.empty()) + { + pool.erase(iter); + } + } + } + + void free(GLenum type, U32 size, GLuint name, U8* data) + { + size = nhpo2(size); + + auto& pool = type == GL_ELEMENT_ARRAY_BUFFER ? mIBOPool : mVBOPool; + + auto& iter = pool.find(size); + + if (iter == pool.end()) + { + std::list<Entry> newlist; + newlist.push_front({ data, name, std::chrono::steady_clock::now() }); + pool[size] = newlist; + } + else + { + iter->second.push_front({ data, name, std::chrono::steady_clock::now() }); + } + } + + void clean() + { + LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; + + std::unordered_map<U32, std::list<Entry>>* pools[] = { &mVBOPool, &mIBOPool }; + + using namespace std::chrono_literals; + + Time cutoff = std::chrono::steady_clock::now() - 5s; + + for (auto* pool : pools) + { + for (Pool::iterator iter = pool->begin(); iter != pool->end(); ) + { + auto& entries = iter->second; + + while (!entries.empty() && entries.back().mAge < cutoff) + { + LL_PROFILE_ZONE_NAMED_CATEGORY_VERTEX("vbo cache timeout"); + auto& entry = entries.back(); + ll_aligned_free_16(entry.mData); + glDeleteBuffers(1, &entry.mGLName); + entries.pop_back(); + } + + if (entries.empty()) + { + iter = pool->erase(iter); + } + else + { + ++iter; + } + } + } + } + + void clear() + { + for (auto& entries : mIBOPool) + { + for (auto& entry : entries.second) + { + ll_aligned_free_16(entry.mData); + glDeleteBuffers(1, &entry.mGLName); + } + } + + for (auto& entries : mVBOPool) + { + for (auto& entry : entries.second) + { + ll_aligned_free_16(entry.mData); + glDeleteBuffers(1, &entry.mGLName); + } + } + + mIBOPool.clear(); + mVBOPool.clear(); + } + + +}; + +static LLVBOPool* sVBOPool = nullptr; + +//============================================================================ +// //static std::list<U32> LLVertexBuffer::sAvailableVAOName; U32 LLVertexBuffer::sCurVAOName = 1; @@ -643,6 +825,8 @@ void LLVertexBuffer::initClass(LLWindow* window) sEnableVBOs = true; sDisableVBOMapping = true; + sVBOPool = new LLVBOPool(); + #if ENABLE_GL_WORK_QUEUE sQueue = new GLWorkQueue(); @@ -687,6 +871,9 @@ void LLVertexBuffer::cleanupClass() { unbind(); + delete sVBOPool; + sVBOPool = nullptr; + #if ENABLE_GL_WORK_QUEUE sQueue->close(); for (int i = 0; i < THREAD_COUNT; ++i) @@ -720,15 +907,8 @@ S32 LLVertexBuffer::determineUsage(S32 usage) ret_usage = 0; } - if (ret_usage == GL_DYNAMIC_DRAW && sPreferStreamDraw) - { - ret_usage = GL_STREAM_DRAW; - } - - if (ret_usage == 0 && LLRender::sGLCoreProfile) - { //MUST use VBOs for all rendering - ret_usage = GL_STREAM_DRAW; - } + // dynamic draw or nothing + ret_usage = GL_DYNAMIC_DRAW; return ret_usage; } @@ -830,62 +1010,17 @@ LLVertexBuffer::~LLVertexBuffer() //---------------------------------------------------------------------------- -// batch glGenBuffers -static GLuint gen_buffer() -{ - LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; - constexpr U32 pool_size = 4096; - - thread_local static GLuint sNamePool[pool_size]; - thread_local static U32 sIndex = 0; - - if (sIndex == 0) - { - LL_PROFILE_ZONE_NAMED_CATEGORY_VERTEX("gen ibo"); - sIndex = pool_size; - glGenBuffers(pool_size, sNamePool); - } - - return sNamePool[--sIndex]; -} - -// batch glDeleteBuffers -static void release_buffer(U32 buff) -{ - LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; -#if 0 - - constexpr U32 pool_size = 4096; - - thread_local static GLuint sNamePool[pool_size]; - thread_local static U32 sIndex = 0; - - if (sIndex == pool_size) - { - LL_PROFILE_ZONE_NAMED_CATEGORY_VERTEX("gen ibo"); - sIndex = 0; - glDeleteBuffers(pool_size, sNamePool); - } - - sNamePool[sIndex++] = buff; -#else - glDeleteBuffers(1, &buff); -#endif -} - void LLVertexBuffer::genBuffer(U32 size) { LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; mSize = size; - mMappedData = (U8*) ll_aligned_malloc_16(size); - mGLBuffer = gen_buffer(); - - glBindBuffer(GL_ARRAY_BUFFER, mGLBuffer); - glBufferData(GL_ARRAY_BUFFER, mSize, nullptr, mUsage); - glBindBuffer(GL_ARRAY_BUFFER, 0); - sGLRenderBuffer = 0; + if (sVBOPool) + { + sVBOPool->allocate(GL_ARRAY_BUFFER, size, mGLBuffer, mMappedData); + } + sGLCount++; } @@ -894,25 +1029,24 @@ void LLVertexBuffer::genIndices(U32 size) LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; mIndicesSize = size; - mMappedIndexData = (U8*) ll_aligned_malloc_16(size); - - mGLIndices = gen_buffer(); - - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mGLIndices); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, mIndicesSize, nullptr, mUsage); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - sGLRenderIndices = 0; + if (sVBOPool) + { + sVBOPool->allocate(GL_ELEMENT_ARRAY_BUFFER, size, mGLIndices, mMappedIndexData); + } sGLCount++; } void LLVertexBuffer::releaseBuffer() { LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; - release_buffer(mGLBuffer); - mGLBuffer = 0; - ll_aligned_free_16(mMappedData); + if (sVBOPool) + { + sVBOPool->free(GL_ARRAY_BUFFER, mSize, mGLBuffer, mMappedData); + } + + mGLBuffer = 0; mMappedData = nullptr; sGLCount--; @@ -921,10 +1055,12 @@ void LLVertexBuffer::releaseBuffer() void LLVertexBuffer::releaseIndices() { LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX; - release_buffer(mGLIndices); - mGLIndices = 0; + + if (sVBOPool) + { + sVBOPool->free(GL_ELEMENT_ARRAY_BUFFER, mIndicesSize, mGLIndices, mMappedIndexData); + } - ll_aligned_free_16(mMappedIndexData); mMappedIndexData = nullptr; sGLCount--; @@ -1604,49 +1740,7 @@ void LLVertexBuffer::flush(bool discard) { if (useVBOs()) { - if (discard) - { // discard existing VBO data if the buffer must be updated - - if (!mMappedVertexRegions.empty()) - { - LL_PROFILE_ZONE_NAMED_CATEGORY_VERTEX("flush discard vbo"); - LL_PROFILE_ZONE_NUM(mSize); - release_buffer(mGLBuffer); - mGLBuffer = gen_buffer(); - bindGLBuffer(); - { - LL_PROFILE_GPU_ZONE("glBufferData"); - glBufferData(GL_ARRAY_BUFFER, mSize, nullptr, mUsage); - - for (int i = 0; i < mSize; i += 65536) - { - LL_PROFILE_GPU_ZONE("glBufferSubData"); - S32 end = llmin(i + 65536, mSize); - S32 count = end - i; - glBufferSubData(GL_ARRAY_BUFFER, i, count, mMappedData + i); - } - } - mMappedVertexRegions.clear(); - } - if (!mMappedIndexRegions.empty()) - { - LL_PROFILE_ZONE_NAMED_CATEGORY_VERTEX("flush discard ibo"); - LL_PROFILE_ZONE_NUM(mIndicesSize); - release_buffer(mGLIndices); - mGLIndices = gen_buffer(); - bindGLIndices(); - { - LL_PROFILE_GPU_ZONE("glBufferData (ibo)"); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, mIndicesSize, mMappedIndexData, mUsage); - } - mMappedIndexRegions.clear(); - } - } - else - { - unmapBuffer(); - } - + unmapBuffer(); } } |