Implement mipmap generation for the Vulkan backend

[libs/gl.git] / source / backends / vulkan / texturecube_backend.cpp

diff --git a/source/backends/vulkan/texturecube_backend.cpp b/source/backends/vulkan/texturecube_backend.cpp
index 38348f34b8636abd0b09e0e3c478fd694abccaea..98f000447c8a2f3aef69cacdfe20e929719d73dc 100644 (file)
--- a/source/backends/vulkan/texturecube_backend.cpp
+++ b/source/backends/vulkan/texturecube_backend.cpp
@@ -30,10 +30,14 @@ void VulkanTextureCube::sub_image(unsigned face, unsigned level, int x, int y, u
        const TextureCube &self = *static_cast<const TextureCube *>(this);
 
        unsigned level_size = self.get_level_size(level);
-       change_layout(self.levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, (x==0 && y==0 && wd==level_size && ht==level_size));
+       bool discard = (x==0 && y==0 && wd==level_size && ht==level_size);
 
        size_t data_size = wd*ht*get_pixel_size(storage_fmt);
-       void *staging = device.get_transfer_queue().prepare_transfer(data_size,
+       void *staging = device.get_transfer_queue().prepare_transfer(this, false, data_size,
+               [this, level, discard](){
+                       unsigned n_levels = static_cast<const TextureCube *>(this)->levels;
+                       change_layout(n_levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
+               },
                [this, face, level, x, y, wd, ht](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
                        const VulkanFunctions &vk = device.get_functions();
 
@@ -52,6 +56,25 @@ void VulkanTextureCube::sub_image(unsigned face, unsigned level, int x, int y, u
        copy(src, src+data_size, static_cast<char *>(staging));
 }
 
+void VulkanTextureCube::generate_mipmap()
+{
+       generate_mipmap_levels(static_cast<const TextureCube *>(this)->levels);
+}
+
+void VulkanTextureCube::fill_mipmap_blit(unsigned level, void *b)
+{
+       const TextureCube &self = *static_cast<const TextureCube *>(this);
+       VkImageBlit &blit = *static_cast<VkImageBlit *>(b);
+
+       int src_size = self.get_level_size(level);
+       int dst_size = self.get_level_size(level+1);
+
+       blit.srcSubresource.layerCount = 6;
+       blit.dstSubresource.layerCount = 6;
+       blit.srcOffsets[1] = { src_size, src_size, 1 };
+       blit.dstOffsets[1] = { dst_size, dst_size, 1 };
+}
+
 size_t VulkanTextureCube::get_data_size() const
 {
        return 0;