[Mesa-dev] [PATCH 4/8] radv: Implement sparse buffer creation.

[Bas Nieuwenhuizen]

Signed-off-by: Bas Nieuwenhuizen <ba...@google.com>
---
 src/amd/vulkan/radv_device.c  | 22 ++++++++++++++++++++--
 src/amd/vulkan/radv_private.h |  1 +
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 3f9a452ddf3..1e92046d62c 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -1702,8 +1702,12 @@ void radv_GetBufferMemoryRequirements(
 
        pMemoryRequirements->memoryTypeBits = (1u << RADV_MEM_TYPE_COUNT) - 1;
 
-       pMemoryRequirements->size = buffer->size;
-       pMemoryRequirements->alignment = 16;
+       if (buffer->flags & VK_BUFFER_CREATE_SPARSE_BINDING_BIT)
+               pMemoryRequirements->alignment = 4096;
+       else
+               pMemoryRequirements->alignment = 16;
+
+       pMemoryRequirements->size = align64(buffer->size, 
pMemoryRequirements->alignment);
 }
 
 void radv_GetImageMemoryRequirements(
@@ -2030,6 +2034,17 @@ VkResult radv_CreateBuffer(
        buffer->usage = pCreateInfo->usage;
        buffer->bo = NULL;
        buffer->offset = 0;
+       buffer->flags = pCreateInfo->flags;
+
+       if (pCreateInfo->flags & VK_BUFFER_CREATE_SPARSE_BINDING_BIT) {
+               buffer->bo = device->ws->buffer_create(device->ws,
+                                                      align64(buffer->size, 
4096),
+                                                      4096, 0, 
RADEON_FLAG_VIRTUAL);
+               if (!buffer->bo) {
+                       vk_free2(&device->alloc, pAllocator, buffer);
+                       return vk_error(VK_ERROR_OUT_OF_DEVICE_MEMORY);
+               }
+       }
 
        *pBuffer = radv_buffer_to_handle(buffer);
 
@@ -2047,6 +2062,9 @@ void radv_DestroyBuffer(
        if (!buffer)
                return;
 
+       if (buffer->flags & VK_BUFFER_CREATE_SPARSE_BINDING_BIT)
+               device->ws->buffer_destroy(buffer->bo);
+
        vk_free2(&device->alloc, pAllocator, buffer);
 }
 
diff --git a/src/amd/vulkan/radv_private.h b/src/amd/vulkan/radv_private.h
index 69ff3578e34..72560f6a972 100644
--- a/src/amd/vulkan/radv_private.h
+++ b/src/amd/vulkan/radv_private.h
@@ -568,6 +568,7 @@ struct radv_buffer {
        VkDeviceSize                                 size;
 
        VkBufferUsageFlags                           usage;
+       VkBufferCreateFlags                          flags;
 
        /* Set when bound */
        struct radeon_winsys_bo *                      bo;
-- 
2.11.0

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