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vk: Improve memory locality of anv_render_pass

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Allocate the pass's array of attachments, anv_render_pass::attachments,
in the same allocation as the pass itself.
This commit is contained in:
Chad Versace
2015-08-19 15:10:14 -07:00
parent 4eaf90effb
commit 1c24a191cd
1 changed files with 7 additions and 8 deletions
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src/vulkan/anv_device.c
+7 -8
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@@ -2207,11 +2207,15 @@ VkResult anv_CreateRenderPass(
ANV_FROM_HANDLE(anv_device, device, _device);
struct anv_render_pass *pass;
size_t size;
size_t attachments_offset;
assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO);
size = sizeof(*pass) +
pCreateInfo->subpassCount * sizeof(pass->subpasses[0]);
size = sizeof(*pass);
size += pCreateInfo->subpassCount * sizeof(pass->subpasses[0]);
attachments_offset = size;
size += pCreateInfo->attachmentCount * sizeof(pass->attachments[0]);
pass = anv_device_alloc(device, size, 8,
VK_SYSTEM_ALLOC_TYPE_API_OBJECT);
if (pass == NULL)
@@ -2221,13 +2225,10 @@ VkResult anv_CreateRenderPass(
* each array member of anv_subpass must be a valid pointer if not NULL.
*/
memset(pass, 0, size);
pass->attachment_count = pCreateInfo->attachmentCount;
pass->subpass_count = pCreateInfo->subpassCount;
pass->attachments = (void *) pass + attachments_offset;
size = pCreateInfo->attachmentCount * sizeof(*pass->attachments);
pass->attachments = anv_device_alloc(device, size, 8,
VK_SYSTEM_ALLOC_TYPE_API_OBJECT);
for (uint32_t i = 0; i < pCreateInfo->attachmentCount; i++) {
pass->attachments[i].format =
anv_format_for_vk_format(pCreateInfo->pAttachments[i].format);
@@ -2293,8 +2294,6 @@ VkResult anv_DestroyRenderPass(
ANV_FROM_HANDLE(anv_device, device, _device);
ANV_FROM_HANDLE(anv_render_pass, pass, _pass);
anv_device_free(device, pass->attachments);
for (uint32_t i = 0; i < pass->subpass_count; i++) {
/* In VkSubpassCreateInfo, each of the attachment arrays may be null.
* Don't free the null arrays.