<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Jan 22, 2018 at 10:48 AM, Nanley Chery <<a href="mailto:nanleychery@gmail.com" target="_blank">nanleychery@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Fri, Jan 19, 2018 at 03:47:23PM -0800, Jason Ekstrand wrote: <div><div class="h5">> v2 (Jason Ekstrand): > - Return an enum instead of a boolean > > Reviewed-by: Topi Pohjolainen <<a href="mailto:topi.pohjolainen@intel.com">topi.pohjolainen@intel.com</a>> > --- > src/intel/vulkan/anv_image.c | 70 ++++++++++++++++++++++++++++++++++++++++++ > src/intel/vulkan/anv_private.h | 13 ++++++++ > 2 files changed, 83 insertions(+) > > diff --git a/src/intel/vulkan/anv_image.c b/src/intel/vulkan/anv_image.c > index 1218c00..84e4b96 100644 > --- a/src/intel/vulkan/anv_image.c > +++ b/src/intel/vulkan/anv_image.c > @@ -863,6 +863,76 @@ anv_layout_to_aux_usage(const struct gen_device_info * const devinfo, > unreachable("layout is not a VkImageLayout enumeration member."); > } > > +/** > + * This function returns the level of unresolved fast-clear support of the > + * given image in the given VkImageLayout. > + * > + * @param devinfo The device information of the Intel GPU. > + * @param image The image that may contain a collection of buffers. > + * @param aspect The aspect of the image to be accessed. > + * @param layout The current layout of the image aspect(s). > + */ > +enum anv_fast_clear_type > +anv_layout_to_fast_clear_type(const struct gen_device_info * const devinfo, > + const struct anv_image * const image, > + const VkImageAspectFlagBits aspect, > + const VkImageLayout layout) > +{ > + /* The aspect must be exactly one of the image aspects. */ > + assert(_mesa_bitcount(aspect) == 1 && (aspect & image->aspects)); > + > + uint32_t plane = anv_image_aspect_to_plane(image->aspects, aspect); > + > + /* If there is no auxiliary surface allocated, there are no fast-clears */ > + if (image->planes[plane].aux_surface.isl.size == 0) > + return false; > + > + /* All images that use an auxiliary surface are required to be tiled. */ > + assert(image->tiling == VK_IMAGE_TILING_OPTIMAL); > + > + /* Stencil has no aux */ > + assert(aspect != VK_IMAGE_ASPECT_STENCIL_BIT); > + > + if (aspect == VK_IMAGE_ASPECT_DEPTH_BIT) { > + /* For depth images (with HiZ), the layout supports fast-clears if and > + * only if it supports HiZ. > + */ > + enum isl_aux_usage aux_usage = > + anv_layout_to_aux_usage(devinfo, image, aspect, layout); > + return aux_usage == ISL_AUX_USAGE_HIZ ? > + ANV_FAST_CLEAR_ANY : ANV_FAST_CLEAR_NONE; > + } > + > + assert(image->aspects & VK_IMAGE_ASPECT_ANY_COLOR_BIT_ANV); > + > + /* Multisample fast-clear is not yet supported. */ > + if (image->samples > 1) > + return false; > + > + /* The only layout which actually supports fast-clears today is > + * VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL. Some day in the future > + * this may change if our ability to track clear colors improves. > + */ </div></div>Stale comment. </blockquote><div> </div><div>Removed locally. I think the switch and the one comment below are probably documentation enough.</div><div> </div><div>--Jason </div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> -Nanley <div class="HOEnZb"><div class="h5"> > + switch (layout) { > + case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL: > + return ANV_FAST_CLEAR_ANY; > + > + case VK_IMAGE_LAYOUT_PRESENT_SRC_KHR: > + return ANV_FAST_CLEAR_NONE; > + > + default: > + /* If the image has CCS_E enabled all the time then we can use > + * fast-clear as long as the clear color is zero since this is the > + * default value we program into every surface state used for > + * texturing. > + */ > + if (image->planes[plane].aux_usage == ISL_AUX_USAGE_CCS_E) > + return ANV_FAST_CLEAR_ZERO_ONLY; > + else > + return ANV_FAST_CLEAR_NONE; > + } > +} > + > > static struct anv_state > alloc_surface_state(struct anv_device *device) > diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h > index a837860..f81f8e1 100644 > --- a/src/intel/vulkan/anv_private.h > +++ b/src/intel/vulkan/anv_private.h > @@ -2443,6 +2443,13 @@ struct anv_image { > } planes[3]; > }; > > +/* The ordering of this enum is important */ > +enum anv_fast_clear_type { > + ANV_FAST_CLEAR_NONE = 0, > + ANV_FAST_CLEAR_ZERO_ONLY = 1, > + ANV_FAST_CLEAR_ANY = 2, > +}; > + > /* Returns the number of auxiliary buffer levels attached to an image. */ > static inline uint8_t > anv_image_aux_levels(const struct anv_image * const image, > @@ -2565,6 +2572,12 @@ anv_layout_to_aux_usage(const struct gen_device_info * const devinfo, > const VkImageAspectFlagBits aspect, > const VkImageLayout layout); > > +enum anv_fast_clear_type > +anv_layout_to_fast_clear_type(const struct gen_device_info * const devinfo, > + const struct anv_image * const image, > + const VkImageAspectFlagBits aspect, > + const VkImageLayout layout); > + > /* This is defined as a macro so that it works for both > * VkImageSubresourceRange and VkImageSubresourceLayers > */ > -- > 2.5.0.400.gff86faf > </div></div><div class="HOEnZb"><div class="h5">> _______________________________________________ > mesa-dev mailing list > <a href="mailto:mesa-dev@lists.freedesktop.org">mesa-dev@lists.freedesktop.org</a> > <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </div></div></blockquote></div> </div></div>