From 03137086dbb341052121e798ef7895ace19dd685 Mon Sep 17 00:00:00 2001 From: ameerj <52414509+ameerj@users.noreply.github.com> Date: Tue, 7 Mar 2023 22:33:11 -0500 Subject: [PATCH] OpenGL: Prefer glClientWaitSync for OGLSync objects At least on Nvidia, glClientWaitSync with a timeout of 0 (non-blocking) is faster than glGetSynciv of GL_SYNC_STATUS. --- src/video_core/renderer_opengl/gl_fence_manager.cpp | 4 +--- .../renderer_opengl/gl_graphics_pipeline.cpp | 5 +---- src/video_core/renderer_opengl/gl_resource_manager.cpp | 10 ++++++++++ src/video_core/renderer_opengl/gl_resource_manager.h | 3 +++ src/video_core/renderer_opengl/gl_texture_cache.cpp | 4 +--- 5 files changed, 16 insertions(+), 10 deletions(-) diff --git a/src/video_core/renderer_opengl/gl_fence_manager.cpp b/src/video_core/renderer_opengl/gl_fence_manager.cpp index 91463f854..5326172af 100644 --- a/src/video_core/renderer_opengl/gl_fence_manager.cpp +++ b/src/video_core/renderer_opengl/gl_fence_manager.cpp @@ -27,9 +27,7 @@ bool GLInnerFence::IsSignaled() const { return true; } ASSERT(sync_object.handle != 0); - GLint sync_status; - glGetSynciv(sync_object.handle, GL_SYNC_STATUS, 1, nullptr, &sync_status); - return sync_status == GL_SIGNALED; + return sync_object.IsSignaled(); } void GLInnerFence::Wait() { diff --git a/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp b/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp index 29491e762..89000d6e0 100644 --- a/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp +++ b/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp @@ -621,10 +621,7 @@ bool GraphicsPipeline::IsBuilt() noexcept { if (built_fence.handle == 0) { return false; } - // Timeout of zero means this is non-blocking - const auto sync_status = glClientWaitSync(built_fence.handle, 0, 0); - ASSERT(sync_status != GL_WAIT_FAILED); - is_built = sync_status != GL_TIMEOUT_EXPIRED; + is_built = built_fence.IsSignaled(); return is_built; } diff --git a/src/video_core/renderer_opengl/gl_resource_manager.cpp b/src/video_core/renderer_opengl/gl_resource_manager.cpp index 3a664fdec..eae8fd110 100644 --- a/src/video_core/renderer_opengl/gl_resource_manager.cpp +++ b/src/video_core/renderer_opengl/gl_resource_manager.cpp @@ -3,6 +3,7 @@ #include #include +#include "common/assert.h" #include "common/microprofile.h" #include "video_core/renderer_opengl/gl_resource_manager.h" #include "video_core/renderer_opengl/gl_shader_util.h" @@ -158,6 +159,15 @@ void OGLSync::Release() { handle = 0; } +bool OGLSync::IsSignaled() const noexcept { + // At least on Nvidia, glClientWaitSync with a timeout of 0 + // is faster than glGetSynciv of GL_SYNC_STATUS. + // Timeout of 0 means this check is non-blocking. + const auto sync_status = glClientWaitSync(handle, 0, 0); + ASSERT(sync_status != GL_WAIT_FAILED); + return sync_status != GL_TIMEOUT_EXPIRED; +} + void OGLFramebuffer::Create() { if (handle != 0) return; diff --git a/src/video_core/renderer_opengl/gl_resource_manager.h b/src/video_core/renderer_opengl/gl_resource_manager.h index bc05ba4bd..77362acd2 100644 --- a/src/video_core/renderer_opengl/gl_resource_manager.h +++ b/src/video_core/renderer_opengl/gl_resource_manager.h @@ -263,6 +263,9 @@ public: /// Deletes the internal OpenGL resource void Release(); + /// Checks if the sync has been signaled + bool IsSignaled() const noexcept; + GLsync handle = 0; }; diff --git a/src/video_core/renderer_opengl/gl_texture_cache.cpp b/src/video_core/renderer_opengl/gl_texture_cache.cpp index b047e7b3d..acff3b8ec 100644 --- a/src/video_core/renderer_opengl/gl_texture_cache.cpp +++ b/src/video_core/renderer_opengl/gl_texture_cache.cpp @@ -714,9 +714,7 @@ std::optional TextureCacheRuntime::StagingBuffers::FindBuffer(size_t req continue; } if (syncs[index].handle != 0) { - GLint status; - glGetSynciv(syncs[index].handle, GL_SYNC_STATUS, 1, nullptr, &status); - if (status != GL_SIGNALED) { + if (!syncs[index].IsSignaled()) { continue; } syncs[index].Release();