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Diffstat (limited to '')
-rw-r--r-- | src/video_core/renderer_opengl/gl_query_cache.cpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/gl_query_cache.cpp b/src/video_core/renderer_opengl/gl_query_cache.cpp new file mode 100644 index 000000000..f12e9f55f --- /dev/null +++ b/src/video_core/renderer_opengl/gl_query_cache.cpp @@ -0,0 +1,120 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <algorithm> +#include <cstring> +#include <memory> +#include <unordered_map> +#include <utility> +#include <vector> + +#include <glad/glad.h> + +#include "common/assert.h" +#include "core/core.h" +#include "video_core/engines/maxwell_3d.h" +#include "video_core/memory_manager.h" +#include "video_core/renderer_opengl/gl_query_cache.h" +#include "video_core/renderer_opengl/gl_rasterizer.h" + +namespace OpenGL { + +namespace { + +constexpr std::array<GLenum, VideoCore::NumQueryTypes> QueryTargets = {GL_SAMPLES_PASSED}; + +constexpr GLenum GetTarget(VideoCore::QueryType type) { + return QueryTargets[static_cast<std::size_t>(type)]; +} + +} // Anonymous namespace + +QueryCache::QueryCache(Core::System& system, RasterizerOpenGL& gl_rasterizer) + : VideoCommon::QueryCacheBase< + QueryCache, CachedQuery, CounterStream, HostCounter, + std::vector<OGLQuery>>{system, + static_cast<VideoCore::RasterizerInterface&>(gl_rasterizer)}, + gl_rasterizer{gl_rasterizer} {} + +QueryCache::~QueryCache() = default; + +OGLQuery QueryCache::AllocateQuery(VideoCore::QueryType type) { + auto& reserve = query_pools[static_cast<std::size_t>(type)]; + OGLQuery query; + if (reserve.empty()) { + query.Create(GetTarget(type)); + return query; + } + + query = std::move(reserve.back()); + reserve.pop_back(); + return query; +} + +void QueryCache::Reserve(VideoCore::QueryType type, OGLQuery&& query) { + query_pools[static_cast<std::size_t>(type)].push_back(std::move(query)); +} + +bool QueryCache::AnyCommandQueued() const noexcept { + return gl_rasterizer.AnyCommandQueued(); +} + +HostCounter::HostCounter(QueryCache& cache, std::shared_ptr<HostCounter> dependency, + VideoCore::QueryType type) + : VideoCommon::HostCounterBase<QueryCache, HostCounter>{std::move(dependency)}, cache{cache}, + type{type}, query{cache.AllocateQuery(type)} { + glBeginQuery(GetTarget(type), query.handle); +} + +HostCounter::~HostCounter() { + cache.Reserve(type, std::move(query)); +} + +void HostCounter::EndQuery() { + if (!cache.AnyCommandQueued()) { + // There are chances a query waited on without commands (glDraw, glClear, glDispatch). Not + // having any of these causes a lock. glFlush is considered a command, so we can safely wait + // for this. Insert to the OpenGL command stream a flush. + glFlush(); + } + glEndQuery(GetTarget(type)); +} + +u64 HostCounter::BlockingQuery() const { + GLint64 value; + glGetQueryObjecti64v(query.handle, GL_QUERY_RESULT, &value); + return static_cast<u64>(value); +} + +CachedQuery::CachedQuery(QueryCache& cache, VideoCore::QueryType type, VAddr cpu_addr, u8* host_ptr) + : VideoCommon::CachedQueryBase<HostCounter>{cpu_addr, host_ptr}, cache{&cache}, type{type} {} + +CachedQuery::CachedQuery(CachedQuery&& rhs) noexcept + : VideoCommon::CachedQueryBase<HostCounter>(std::move(rhs)), cache{rhs.cache}, type{rhs.type} {} + +CachedQuery& CachedQuery::operator=(CachedQuery&& rhs) noexcept { + VideoCommon::CachedQueryBase<HostCounter>::operator=(std::move(rhs)); + cache = rhs.cache; + type = rhs.type; + return *this; +} + +void CachedQuery::Flush() { + // Waiting for a query while another query of the same target is enabled locks Nvidia's driver. + // To avoid this disable and re-enable keeping the dependency stream. + // But we only have to do this if we have pending waits to be done. + auto& stream = cache->Stream(type); + const bool slice_counter = WaitPending() && stream.IsEnabled(); + if (slice_counter) { + stream.Update(false); + } + + VideoCommon::CachedQueryBase<HostCounter>::Flush(); + + if (slice_counter) { + stream.Update(true); + } +} + +} // namespace OpenGL |