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 5b7bd368760f257698765aeff638ce8a427188ff..98f000447c8a2f3aef69cacdfe20e929719d73dc 100644 (file)
--- a/source/backends/vulkan/texturecube_backend.cpp
+++ b/source/backends/vulkan/texturecube_backend.cpp
@@ -56,6 +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;