From 7f8000db8bd45bb95bda4a4f8535c49b8ef74254 Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Wed, 3 Jun 2009 17:49:05 +0100 Subject: Fast path when rebinding the same texture in single context environment If there is no shared context, there is no purpose in rebinding the same texture. In some artificial tests this improves performance 10% - 30%. --- src/mesa/main/texobj.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'src/mesa/main/texobj.c') diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c index d51e7b76ec..2082f945f1 100644 --- a/src/mesa/main/texobj.c +++ b/src/mesa/main/texobj.c @@ -945,6 +945,7 @@ _mesa_BindTexture( GLenum target, GLuint texName ) struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; struct gl_texture_object *newTexObj = NULL, *defaultTexObj = NULL; GLint targetIndex; + GLboolean early_out = GL_FALSE; ASSERT_OUTSIDE_BEGIN_END(ctx); if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) @@ -998,6 +999,17 @@ _mesa_BindTexture( GLenum target, GLuint texName ) assert(valid_texture_object(newTexObj)); + _glthread_LOCK_MUTEX(ctx->Shared->Mutex); + if ((ctx->Shared->RefCount == 1) + && (newTexObj == texUnit->CurrentTex[targetIndex])) { + early_out = GL_TRUE; + } + _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); + + if (early_out) { + return; + } + /* flush before changing binding */ FLUSH_VERTICES(ctx, _NEW_TEXTURE); -- cgit v1.2.3