Implement mipmap generation for the Vulkan backend

[libs/gl.git] / source / backends / vulkan / texture1d_backend.cpp

diff --git a/source/backends/vulkan/texture1d_backend.cpp b/source/backends/vulkan/texture1d_backend.cpp
index 91c6252a85d1544597f7a273e3e7e40a0fa8a381..d66732bf6b7c62056058b38abf7cfa6e9d01e74d 100644 (file)
--- a/source/backends/vulkan/texture1d_backend.cpp
+++ b/source/backends/vulkan/texture1d_backend.cpp
@@ -27,10 +27,14 @@ void VulkanTexture1D::sub_image(unsigned level, int x, unsigned wd, const void *
        const Texture1D &self = *static_cast<const Texture1D *>(this);
 
        unsigned level_size = self.get_level_size(level);
-       change_layout(self.levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, (x==0 && wd==level_size));
+       bool discard = (x==0 && wd==level_size);
 
        size_t data_size = wd*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 Texture1D *>(this)->levels;
+                       change_layout(n_levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
+               },
                [this, level, x, wd](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
                        const VulkanFunctions &vk = device.get_functions();
 
@@ -49,6 +53,23 @@ void VulkanTexture1D::sub_image(unsigned level, int x, unsigned wd, const void *
        copy(src, src+data_size, static_cast<char *>(staging));
 }
 
+void VulkanTexture1D::generate_mipmap()
+{
+       generate_mipmap_levels(static_cast<const Texture1D *>(this)->levels);
+}
+
+void VulkanTexture1D::fill_mipmap_blit(unsigned level, void *b)
+{
+       const Texture1D &self = *static_cast<const Texture1D *>(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.srcOffsets[1] = { src_size, 1, 1 };
+       blit.dstOffsets[1] = { dst_size, 1, 1 };
+}
+
 size_t VulkanTexture1D::get_data_size() const
 {
        return 0;