From 2770107d87ccfd558480c44cd90a75524bdea738 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Sun, 10 May 2009 09:45:43 -0700 Subject: intel: Map write-only buffer objects through the GTT when possible. This looks to be a win of a few percent in cairogears with new vbo code, thanks to not polluting caches. (cherry picked from commit aa422b262509bc0763a50f63a51a1730139ea52f) --- src/mesa/drivers/dri/intel/intel_buffer_objects.c | 16 ++++++++++++++-- src/mesa/drivers/dri/intel/intel_buffer_objects.h | 1 + 2 files changed, 15 insertions(+), 2 deletions(-) (limited to 'src/mesa/drivers/dri') diff --git a/src/mesa/drivers/dri/intel/intel_buffer_objects.c b/src/mesa/drivers/dri/intel/intel_buffer_objects.c index c849e4869e..1b64c68157 100644 --- a/src/mesa/drivers/dri/intel/intel_buffer_objects.c +++ b/src/mesa/drivers/dri/intel/intel_buffer_objects.c @@ -205,6 +205,7 @@ intel_bufferobj_map(GLcontext * ctx, struct intel_context *intel = intel_context(ctx); struct intel_buffer_object *intel_obj = intel_buffer_object(obj); GLboolean read_only = (access == GL_READ_ONLY_ARB); + GLboolean write_only = (access == GL_WRITE_ONLY_ARB); assert(intel_obj); @@ -216,7 +217,14 @@ intel_bufferobj_map(GLcontext * ctx, return NULL; } - dri_bo_map(intel_obj->buffer, !read_only); + if (write_only && intel->intelScreen->kernel_exec_fencing) { + drm_intel_gem_bo_map_gtt(intel_obj->buffer); + intel_obj->mapped_gtt = GL_TRUE; + } else { + drm_intel_bo_map(intel_obj->buffer, !read_only); + intel_obj->mapped_gtt = GL_FALSE; + } + obj->Pointer = intel_obj->buffer->virtual; return obj->Pointer; } @@ -234,7 +242,11 @@ intel_bufferobj_unmap(GLcontext * ctx, assert(intel_obj); if (intel_obj->buffer != NULL) { assert(obj->Pointer); - dri_bo_unmap(intel_obj->buffer); + if (intel_obj->mapped_gtt) { + drm_intel_gem_bo_unmap_gtt(intel_obj->buffer); + } else { + drm_intel_bo_unmap(intel_obj->buffer); + } obj->Pointer = NULL; } return GL_TRUE; diff --git a/src/mesa/drivers/dri/intel/intel_buffer_objects.h b/src/mesa/drivers/dri/intel/intel_buffer_objects.h index bf6dbd58f2..7ef723833c 100644 --- a/src/mesa/drivers/dri/intel/intel_buffer_objects.h +++ b/src/mesa/drivers/dri/intel/intel_buffer_objects.h @@ -46,6 +46,7 @@ struct intel_buffer_object struct intel_region *region; /* Is there a zero-copy texture associated with this (pixel) buffer object? */ + GLboolean mapped_gtt; }; -- cgit v1.2.3