src/intel/vulkan/anv_pass.c - third_party/mesa - Git at Google

 /*
  * Copyright © 2015 Intel Corporation
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  * IN THE SOFTWARE.
  */

 #include "anv_private.h"

 #include "vk_util.h"

 static unsigned
 num_subpass_attachments(const VkSubpassDescription *desc)
 {
    return desc->inputAttachmentCount +
           desc->colorAttachmentCount +
           (desc->pResolveAttachments ? desc->colorAttachmentCount : 0) +
           (desc->pDepthStencilAttachment != NULL);
 }

 static void
 init_first_subpass_layout(struct anv_render_pass_attachment * const att,
                           const VkAttachmentReference att_ref)
 {
    if (att->first_subpass_layout == VK_IMAGE_LAYOUT_UNDEFINED) {
       att->first_subpass_layout = att_ref.layout;
       assert(att->first_subpass_layout != VK_IMAGE_LAYOUT_UNDEFINED);
    }
 }

 VkResult anv_CreateRenderPass(
     VkDevice                                    _device,
     const VkRenderPassCreateInfo*               pCreateInfo,
     const VkAllocationCallbacks*                pAllocator,
     VkRenderPass*                               pRenderPass)
 {
    ANV_FROM_HANDLE(anv_device, device, _device);

    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO);

    struct anv_render_pass *pass;
    struct anv_subpass *subpasses;
    struct anv_render_pass_attachment *attachments;
    enum anv_pipe_bits *subpass_flushes;

    ANV_MULTIALLOC(ma);
    anv_multialloc_add(&ma, &pass, 1);
    anv_multialloc_add(&ma, &subpasses, pCreateInfo->subpassCount);
    anv_multialloc_add(&ma, &attachments, pCreateInfo->attachmentCount);
    anv_multialloc_add(&ma, &subpass_flushes, pCreateInfo->subpassCount + 1);

    VkAttachmentReference *subpass_attachments;
    uint32_t subpass_attachment_count = 0;
    for (uint32_t i = 0; i < pCreateInfo->subpassCount; i++) {
       subpass_attachment_count +=
          num_subpass_attachments(&pCreateInfo->pSubpasses[i]);
    }
    anv_multialloc_add(&ma, &subpass_attachments, subpass_attachment_count);

    if (!anv_multialloc_alloc2(&ma, &device->alloc, pAllocator,
                               VK_SYSTEM_ALLOCATION_SCOPE_OBJECT))
       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);

    /* Clear the subpasses along with the parent pass. This required because
     * each array member of anv_subpass must be a valid pointer if not NULL.
     */
    memset(pass, 0, ma.size);
    pass->attachment_count = pCreateInfo->attachmentCount;
    pass->subpass_count = pCreateInfo->subpassCount;
    pass->attachments = attachments;
    pass->subpass_flushes = subpass_flushes;

    for (uint32_t i = 0; i < pCreateInfo->attachmentCount; i++) {
       struct anv_render_pass_attachment *att = &pass->attachments[i];

       att->format = pCreateInfo->pAttachments[i].format;
       att->samples = pCreateInfo->pAttachments[i].samples;
       att->usage = 0;
       att->load_op = pCreateInfo->pAttachments[i].loadOp;
       att->store_op = pCreateInfo->pAttachments[i].storeOp;
       att->stencil_load_op = pCreateInfo->pAttachments[i].stencilLoadOp;
       att->initial_layout = pCreateInfo->pAttachments[i].initialLayout;
       att->final_layout = pCreateInfo->pAttachments[i].finalLayout;
       att->first_subpass_layout = VK_IMAGE_LAYOUT_UNDEFINED;
    }

    bool has_color = false, has_depth = false, has_input = false;
    for (uint32_t i = 0; i < pCreateInfo->subpassCount; i++) {
       const VkSubpassDescription *desc = &pCreateInfo->pSubpasses[i];
       struct anv_subpass *subpass = &pass->subpasses[i];

       subpass->input_count = desc->inputAttachmentCount;
       subpass->color_count = desc->colorAttachmentCount;
       subpass->attachment_count = num_subpass_attachments(desc);
       subpass->attachments = subpass_attachments;
       subpass->view_mask = 0;

       if (desc->inputAttachmentCount > 0) {
          subpass->input_attachments = subpass_attachments;
          subpass_attachments += desc->inputAttachmentCount;

          for (uint32_t j = 0; j < desc->inputAttachmentCount; j++) {
             uint32_t a = desc->pInputAttachments[j].attachment;
             subpass->input_attachments[j] = desc->pInputAttachments[j];
             if (a != VK_ATTACHMENT_UNUSED) {
                has_input = true;
                pass->attachments[a].usage |= VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
                pass->attachments[a].last_subpass_idx = i;

                init_first_subpass_layout(&pass->attachments[a],
                                          desc->pInputAttachments[j]);
                if (desc->pDepthStencilAttachment &&
                    a == desc->pDepthStencilAttachment->attachment)
                   subpass->has_ds_self_dep = true;
             }
          }
       }

       if (desc->colorAttachmentCount > 0) {
          subpass->color_attachments = subpass_attachments;
          subpass_attachments += desc->colorAttachmentCount;

          for (uint32_t j = 0; j < desc->colorAttachmentCount; j++) {
             uint32_t a = desc->pColorAttachments[j].attachment;
             subpass->color_attachments[j] = desc->pColorAttachments[j];
             if (a != VK_ATTACHMENT_UNUSED) {
                has_color = true;
                pass->attachments[a].usage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
                pass->attachments[a].last_subpass_idx = i;

                init_first_subpass_layout(&pass->attachments[a],
                                          desc->pColorAttachments[j]);
             }
          }
       }

       subpass->has_resolve = false;
       if (desc->pResolveAttachments) {
          subpass->resolve_attachments = subpass_attachments;
          subpass_attachments += desc->colorAttachmentCount;

          for (uint32_t j = 0; j < desc->colorAttachmentCount; j++) {
             uint32_t a = desc->pResolveAttachments[j].attachment;
             subpass->resolve_attachments[j] = desc->pResolveAttachments[j];
             if (a != VK_ATTACHMENT_UNUSED) {
                subpass->has_resolve = true;
                uint32_t color_att = desc->pColorAttachments[j].attachment;
                pass->attachments[color_att].usage |=
                   VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
                pass->attachments[a].usage |= VK_IMAGE_USAGE_TRANSFER_DST_BIT;
                pass->attachments[a].last_subpass_idx = i;

                init_first_subpass_layout(&pass->attachments[a],
                                          desc->pResolveAttachments[j]);
             }
          }
       }

       if (desc->pDepthStencilAttachment) {
          uint32_t a = desc->pDepthStencilAttachment->attachment;
          *subpass_attachments++ = subpass->depth_stencil_attachment =
             *desc->pDepthStencilAttachment;
          if (a != VK_ATTACHMENT_UNUSED) {
             has_depth = true;
             pass->attachments[a].usage |=
                VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
             pass->attachments[a].last_subpass_idx = i;

             init_first_subpass_layout(&pass->attachments[a],
                                       *desc->pDepthStencilAttachment);
          }
       } else {
          subpass->depth_stencil_attachment.attachment = VK_ATTACHMENT_UNUSED;
          subpass->depth_stencil_attachment.layout = VK_IMAGE_LAYOUT_UNDEFINED;
       }
    }

    for (uint32_t i = 0; i < pCreateInfo->dependencyCount; i++) {
       const VkSubpassDependency *dep = &pCreateInfo->pDependencies[i];
       if (dep->dstSubpass == VK_SUBPASS_EXTERNAL) {
          pass->subpass_flushes[pass->subpass_count] |=
             anv_pipe_invalidate_bits_for_access_flags(dep->dstAccessMask);
       } else {
          assert(dep->dstSubpass < pass->subpass_count);
          pass->subpass_flushes[dep->dstSubpass] |=
             anv_pipe_invalidate_bits_for_access_flags(dep->dstAccessMask);
       }

       if (dep->srcSubpass == VK_SUBPASS_EXTERNAL) {
          pass->subpass_flushes[0] |=
             anv_pipe_flush_bits_for_access_flags(dep->srcAccessMask);
       } else {
          assert(dep->srcSubpass < pass->subpass_count);
          pass->subpass_flushes[dep->srcSubpass + 1] |=
             anv_pipe_flush_bits_for_access_flags(dep->srcAccessMask);
       }
    }

    /* From the Vulkan 1.0.39 spec:
     *
     *    If there is no subpass dependency from VK_SUBPASS_EXTERNAL to the
     *    first subpass that uses an attachment, then an implicit subpass
     *    dependency exists from VK_SUBPASS_EXTERNAL to the first subpass it is
     *    used in. The subpass dependency operates as if defined with the
     *    following parameters:
     *
     *    VkSubpassDependency implicitDependency = {
     *        .srcSubpass = VK_SUBPASS_EXTERNAL;
     *        .dstSubpass = firstSubpass; // First subpass attachment is used in
     *        .srcStageMask = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
     *        .dstStageMask = VK_PIPELINE_STAGE_ALL_COMMANDS_BIT;
     *        .srcAccessMask = 0;
     *        .dstAccessMask = VK_ACCESS_INPUT_ATTACHMENT_READ_BIT |
     *                         VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
     *                         VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
     *                         VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
     *                         VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
     *        .dependencyFlags = 0;
     *    };
     *
     *    Similarly, if there is no subpass dependency from the last subpass
     *    that uses an attachment to VK_SUBPASS_EXTERNAL, then an implicit
     *    subpass dependency exists from the last subpass it is used in to
     *    VK_SUBPASS_EXTERNAL. The subpass dependency operates as if defined
     *    with the following parameters:
     *
     *    VkSubpassDependency implicitDependency = {
     *        .srcSubpass = lastSubpass; // Last subpass attachment is used in
     *        .dstSubpass = VK_SUBPASS_EXTERNAL;
     *        .srcStageMask = VK_PIPELINE_STAGE_ALL_COMMANDS_BIT;
     *        .dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
     *        .srcAccessMask = VK_ACCESS_INPUT_ATTACHMENT_READ_BIT |
     *                         VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
     *                         VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
     *                         VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
     *                         VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
     *        .dstAccessMask = 0;
     *        .dependencyFlags = 0;
     *    };
     *
     * We could implement this by walking over all of the attachments and
     * subpasses and checking to see if any of them don't have an external
     * dependency.  Or, we could just be lazy and add a couple extra flushes.
     * We choose to be lazy.
     */
    if (has_input) {
       pass->subpass_flushes[0] |=
          ANV_PIPE_TEXTURE_CACHE_INVALIDATE_BIT;
    }
    if (has_color) {
       pass->subpass_flushes[pass->subpass_count] |=
          ANV_PIPE_RENDER_TARGET_CACHE_FLUSH_BIT;
    }
    if (has_depth) {
       pass->subpass_flushes[pass->subpass_count] |=
          ANV_PIPE_DEPTH_CACHE_FLUSH_BIT;
    }

    vk_foreach_struct(ext, pCreateInfo->pNext) {
       switch (ext->sType) {
       case VK_STRUCTURE_TYPE_RENDER_PASS_MULTIVIEW_CREATE_INFO_KHR: {
          VkRenderPassMultiviewCreateInfoKHR *mv = (void *)ext;

          for (uint32_t i = 0; i < mv->subpassCount; i++) {
             pass->subpasses[i].view_mask = mv->pViewMasks[i];
          }
          break;
       }

       default:
          anv_debug_ignored_stype(ext->sType);
       }
    }

    *pRenderPass = anv_render_pass_to_handle(pass);

    return VK_SUCCESS;
 }

 void anv_DestroyRenderPass(
     VkDevice                                    _device,
     VkRenderPass                                _pass,
     const VkAllocationCallbacks*                pAllocator)
 {
    ANV_FROM_HANDLE(anv_device, device, _device);
    ANV_FROM_HANDLE(anv_render_pass, pass, _pass);

    vk_free2(&device->alloc, pAllocator, pass);
 }

 void anv_GetRenderAreaGranularity(
     VkDevice                                    device,
     VkRenderPass                                renderPass,
     VkExtent2D*                                 pGranularity)
 {
    ANV_FROM_HANDLE(anv_render_pass, pass, renderPass);

    /* This granularity satisfies HiZ fast clear alignment requirements
     * for all sample counts.
     */
    for (unsigned i = 0; i < pass->subpass_count; ++i) {
       if (pass->subpasses[i].depth_stencil_attachment.attachment !=
           VK_ATTACHMENT_UNUSED) {
          *pGranularity = (VkExtent2D) { .width = 8, .height = 4 };
          return;
       }
    }

    *pGranularity = (VkExtent2D) { 1, 1 };
 }
	/*
	* Copyright © 2015 Intel Corporation
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice (including the next
	* paragraph) shall be included in all copies or substantial portions of the
	* Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	* IN THE SOFTWARE.
	*/

	#include "anv_private.h"

	#include "vk_util.h"

	static unsigned
	num_subpass_attachments(const VkSubpassDescription *desc)
	{
	return desc->inputAttachmentCount +
	desc->colorAttachmentCount +
	(desc->pResolveAttachments ? desc->colorAttachmentCount : 0) +
	(desc->pDepthStencilAttachment != NULL);
	}

	static void
	init_first_subpass_layout(struct anv_render_pass_attachment * const att,
	const VkAttachmentReference att_ref)
	{
	if (att->first_subpass_layout == VK_IMAGE_LAYOUT_UNDEFINED) {
	att->first_subpass_layout = att_ref.layout;
	assert(att->first_subpass_layout != VK_IMAGE_LAYOUT_UNDEFINED);
	}
	}

	VkResult anv_CreateRenderPass(
	VkDevice _device,
	const VkRenderPassCreateInfo* pCreateInfo,
	const VkAllocationCallbacks* pAllocator,
	VkRenderPass* pRenderPass)
	{
	ANV_FROM_HANDLE(anv_device, device, _device);

	assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO);

	struct anv_render_pass *pass;
	struct anv_subpass *subpasses;
	struct anv_render_pass_attachment *attachments;
	enum anv_pipe_bits *subpass_flushes;

	ANV_MULTIALLOC(ma);
	anv_multialloc_add(&ma, &pass, 1);
	anv_multialloc_add(&ma, &subpasses, pCreateInfo->subpassCount);
	anv_multialloc_add(&ma, &attachments, pCreateInfo->attachmentCount);
	anv_multialloc_add(&ma, &subpass_flushes, pCreateInfo->subpassCount + 1);

	VkAttachmentReference *subpass_attachments;
	uint32_t subpass_attachment_count = 0;
	for (uint32_t i = 0; i < pCreateInfo->subpassCount; i++) {
	subpass_attachment_count +=
	num_subpass_attachments(&pCreateInfo->pSubpasses[i]);
	}
	anv_multialloc_add(&ma, &subpass_attachments, subpass_attachment_count);

	if (!anv_multialloc_alloc2(&ma, &device->alloc, pAllocator,
	VK_SYSTEM_ALLOCATION_SCOPE_OBJECT))
	return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);

	/* Clear the subpasses along with the parent pass. This required because
	* each array member of anv_subpass must be a valid pointer if not NULL.
	*/
	memset(pass, 0, ma.size);
	pass->attachment_count = pCreateInfo->attachmentCount;
	pass->subpass_count = pCreateInfo->subpassCount;
	pass->attachments = attachments;
	pass->subpass_flushes = subpass_flushes;

	for (uint32_t i = 0; i < pCreateInfo->attachmentCount; i++) {
	struct anv_render_pass_attachment *att = &pass->attachments[i];

	att->format = pCreateInfo->pAttachments[i].format;
	att->samples = pCreateInfo->pAttachments[i].samples;
	att->usage = 0;
	att->load_op = pCreateInfo->pAttachments[i].loadOp;
	att->store_op = pCreateInfo->pAttachments[i].storeOp;
	att->stencil_load_op = pCreateInfo->pAttachments[i].stencilLoadOp;
	att->initial_layout = pCreateInfo->pAttachments[i].initialLayout;
	att->final_layout = pCreateInfo->pAttachments[i].finalLayout;
	att->first_subpass_layout = VK_IMAGE_LAYOUT_UNDEFINED;
	}

	bool has_color = false, has_depth = false, has_input = false;
	for (uint32_t i = 0; i < pCreateInfo->subpassCount; i++) {
	const VkSubpassDescription *desc = &pCreateInfo->pSubpasses[i];
	struct anv_subpass *subpass = &pass->subpasses[i];

	subpass->input_count = desc->inputAttachmentCount;
	subpass->color_count = desc->colorAttachmentCount;
	subpass->attachment_count = num_subpass_attachments(desc);
	subpass->attachments = subpass_attachments;
	subpass->view_mask = 0;

	if (desc->inputAttachmentCount > 0) {
	subpass->input_attachments = subpass_attachments;
	subpass_attachments += desc->inputAttachmentCount;

	for (uint32_t j = 0; j < desc->inputAttachmentCount; j++) {
	uint32_t a = desc->pInputAttachments[j].attachment;
	subpass->input_attachments[j] = desc->pInputAttachments[j];
	if (a != VK_ATTACHMENT_UNUSED) {
	has_input = true;
	pass->attachments[a].usage \|= VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
	pass->attachments[a].last_subpass_idx = i;

	init_first_subpass_layout(&pass->attachments[a],
	desc->pInputAttachments[j]);
	if (desc->pDepthStencilAttachment &&
	a == desc->pDepthStencilAttachment->attachment)
	subpass->has_ds_self_dep = true;
	}
	}
	}

	if (desc->colorAttachmentCount > 0) {
	subpass->color_attachments = subpass_attachments;
	subpass_attachments += desc->colorAttachmentCount;

	for (uint32_t j = 0; j < desc->colorAttachmentCount; j++) {
	uint32_t a = desc->pColorAttachments[j].attachment;
	subpass->color_attachments[j] = desc->pColorAttachments[j];
	if (a != VK_ATTACHMENT_UNUSED) {
	has_color = true;
	pass->attachments[a].usage \|= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
	pass->attachments[a].last_subpass_idx = i;

	init_first_subpass_layout(&pass->attachments[a],
	desc->pColorAttachments[j]);
	}
	}
	}

	subpass->has_resolve = false;
	if (desc->pResolveAttachments) {
	subpass->resolve_attachments = subpass_attachments;
	subpass_attachments += desc->colorAttachmentCount;

	for (uint32_t j = 0; j < desc->colorAttachmentCount; j++) {
	uint32_t a = desc->pResolveAttachments[j].attachment;
	subpass->resolve_attachments[j] = desc->pResolveAttachments[j];
	if (a != VK_ATTACHMENT_UNUSED) {
	subpass->has_resolve = true;
	uint32_t color_att = desc->pColorAttachments[j].attachment;
	pass->attachments[color_att].usage \|=
	VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
	pass->attachments[a].usage \|= VK_IMAGE_USAGE_TRANSFER_DST_BIT;
	pass->attachments[a].last_subpass_idx = i;

	init_first_subpass_layout(&pass->attachments[a],
	desc->pResolveAttachments[j]);
	}
	}
	}

	if (desc->pDepthStencilAttachment) {
	uint32_t a = desc->pDepthStencilAttachment->attachment;
	*subpass_attachments++ = subpass->depth_stencil_attachment =
	*desc->pDepthStencilAttachment;
	if (a != VK_ATTACHMENT_UNUSED) {
	has_depth = true;
	pass->attachments[a].usage \|=
	VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
	pass->attachments[a].last_subpass_idx = i;

	init_first_subpass_layout(&pass->attachments[a],
	*desc->pDepthStencilAttachment);
	}
	} else {
	subpass->depth_stencil_attachment.attachment = VK_ATTACHMENT_UNUSED;
	subpass->depth_stencil_attachment.layout = VK_IMAGE_LAYOUT_UNDEFINED;
	}
	}

	for (uint32_t i = 0; i < pCreateInfo->dependencyCount; i++) {
	const VkSubpassDependency *dep = &pCreateInfo->pDependencies[i];
	if (dep->dstSubpass == VK_SUBPASS_EXTERNAL) {
	pass->subpass_flushes[pass->subpass_count] \|=
	anv_pipe_invalidate_bits_for_access_flags(dep->dstAccessMask);
	} else {
	assert(dep->dstSubpass < pass->subpass_count);
	pass->subpass_flushes[dep->dstSubpass] \|=
	anv_pipe_invalidate_bits_for_access_flags(dep->dstAccessMask);
	}

	if (dep->srcSubpass == VK_SUBPASS_EXTERNAL) {
	pass->subpass_flushes[0] \|=
	anv_pipe_flush_bits_for_access_flags(dep->srcAccessMask);
	} else {
	assert(dep->srcSubpass < pass->subpass_count);
	pass->subpass_flushes[dep->srcSubpass + 1] \|=
	anv_pipe_flush_bits_for_access_flags(dep->srcAccessMask);
	}
	}

	/* From the Vulkan 1.0.39 spec:
	*
	* If there is no subpass dependency from VK_SUBPASS_EXTERNAL to the
	* first subpass that uses an attachment, then an implicit subpass
	* dependency exists from VK_SUBPASS_EXTERNAL to the first subpass it is
	* used in. The subpass dependency operates as if defined with the
	* following parameters:
	*
	* VkSubpassDependency implicitDependency = {
	* .srcSubpass = VK_SUBPASS_EXTERNAL;
	* .dstSubpass = firstSubpass; // First subpass attachment is used in
	* .srcStageMask = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
	* .dstStageMask = VK_PIPELINE_STAGE_ALL_COMMANDS_BIT;
	* .srcAccessMask = 0;
	* .dstAccessMask = VK_ACCESS_INPUT_ATTACHMENT_READ_BIT \|
	* VK_ACCESS_COLOR_ATTACHMENT_READ_BIT \|
	* VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT \|
	* VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT \|
	* VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
	* .dependencyFlags = 0;
	* };
	*
	* Similarly, if there is no subpass dependency from the last subpass
	* that uses an attachment to VK_SUBPASS_EXTERNAL, then an implicit
	* subpass dependency exists from the last subpass it is used in to
	* VK_SUBPASS_EXTERNAL. The subpass dependency operates as if defined
	* with the following parameters:
	*
	* VkSubpassDependency implicitDependency = {
	* .srcSubpass = lastSubpass; // Last subpass attachment is used in
	* .dstSubpass = VK_SUBPASS_EXTERNAL;
	* .srcStageMask = VK_PIPELINE_STAGE_ALL_COMMANDS_BIT;
	* .dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
	* .srcAccessMask = VK_ACCESS_INPUT_ATTACHMENT_READ_BIT \|
	* VK_ACCESS_COLOR_ATTACHMENT_READ_BIT \|
	* VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT \|
	* VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT \|
	* VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
	* .dstAccessMask = 0;
	* .dependencyFlags = 0;
	* };
	*
	* We could implement this by walking over all of the attachments and
	* subpasses and checking to see if any of them don't have an external
	* dependency. Or, we could just be lazy and add a couple extra flushes.
	* We choose to be lazy.
	*/
	if (has_input) {
	pass->subpass_flushes[0] \|=
	ANV_PIPE_TEXTURE_CACHE_INVALIDATE_BIT;
	}
	if (has_color) {
	pass->subpass_flushes[pass->subpass_count] \|=
	ANV_PIPE_RENDER_TARGET_CACHE_FLUSH_BIT;
	}
	if (has_depth) {
	pass->subpass_flushes[pass->subpass_count] \|=
	ANV_PIPE_DEPTH_CACHE_FLUSH_BIT;
	}

	vk_foreach_struct(ext, pCreateInfo->pNext) {
	switch (ext->sType) {
	case VK_STRUCTURE_TYPE_RENDER_PASS_MULTIVIEW_CREATE_INFO_KHR: {
	VkRenderPassMultiviewCreateInfoKHR mv = (void )ext;

	for (uint32_t i = 0; i < mv->subpassCount; i++) {
	pass->subpasses[i].view_mask = mv->pViewMasks[i];
	}
	break;
	}

	default:
	anv_debug_ignored_stype(ext->sType);
	}
	}

	*pRenderPass = anv_render_pass_to_handle(pass);

	return VK_SUCCESS;
	}

	void anv_DestroyRenderPass(
	VkDevice _device,
	VkRenderPass _pass,
	const VkAllocationCallbacks* pAllocator)
	{
	ANV_FROM_HANDLE(anv_device, device, _device);
	ANV_FROM_HANDLE(anv_render_pass, pass, _pass);

	vk_free2(&device->alloc, pAllocator, pass);
	}

	void anv_GetRenderAreaGranularity(
	VkDevice device,
	VkRenderPass renderPass,
	VkExtent2D* pGranularity)
	{
	ANV_FROM_HANDLE(anv_render_pass, pass, renderPass);

	/* This granularity satisfies HiZ fast clear alignment requirements
	* for all sample counts.
	*/
	for (unsigned i = 0; i < pass->subpass_count; ++i) {
	if (pass->subpasses[i].depth_stencil_attachment.attachment !=
	VK_ATTACHMENT_UNUSED) {
	*pGranularity = (VkExtent2D) { .width = 8, .height = 4 };
	return;
	}
	}

	*pGranularity = (VkExtent2D) { 1, 1 };
	}