source/backends/vulkan/texture2d_backend.cpp

   1 #include "device.h"
   2 #include "texture2d.h"
   3 #include "texture2d_backend.h"
   4 #include "vulkan.h"
   5
   6 using namespace std;
   7
   8 namespace Msp {
   9 namespace GL {
  10
  11 VulkanTexture2D::VulkanTexture2D():
  12         Texture(VK_IMAGE_VIEW_TYPE_2D)
  13 { }
  14
  15 void VulkanTexture2D::fill_image_info(void *ii) const
  16 {
  17         const Texture2D &self = *static_cast<const Texture2D *>(this);
  18
  19         VkImageCreateInfo *image_info = static_cast<VkImageCreateInfo *>(ii);
  20         image_info->imageType = VK_IMAGE_TYPE_2D;
  21         image_info->extent.width = self.width;
  22         image_info->extent.height = self.height;
  23         image_info->mipLevels = self.levels;
  24 }
  25
  26 void VulkanTexture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
  27 {
  28         const Texture2D &self = *static_cast<const Texture2D *>(this);
  29
  30         auto level_size = self.get_level_size(level);
  31         bool discard = (x==0 && y==0 && wd==level_size.x && ht==level_size.y);
  32
  33         size_t data_size = wd*ht*get_pixel_size(storage_fmt);
  34         void *staging = device.get_transfer_queue().prepare_transfer(this, false, data_size,
  35                 [this, level, discard](){
  36                         unsigned n_levels = static_cast<const Texture2D *>(this)->levels;
  37                         change_layout(n_levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
  38                 },
  39                 [this, level, x, y, wd, ht](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  40                         const VulkanFunctions &vk = device.get_functions();
  41
  42                         VkBufferImageCopy region = { };
  43                         region.bufferOffset = src_off;
  44                         region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  45                         region.imageSubresource.mipLevel = level;
  46                         region.imageSubresource.baseArrayLayer = 0;
  47                         region.imageSubresource.layerCount = 1;
  48                         region.imageOffset = { x, y, 0 };
  49                         region.imageExtent = { wd, ht, 1 };
  50                         vk.CmdCopyBufferToImage(cmd_buf, staging_buf, handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
  51                 });
  52
  53         const char *src = static_cast<const char *>(data);
  54         copy(src, src+data_size, static_cast<char *>(staging));
  55 }
  56
  57 Resource::AsyncLoader *VulkanTexture2D::load(IO::Seekable &, const Resources *)
  58 {
  59         throw logic_error("Texture2D::load is unimplemented");
  60 }
  61
  62 uint64_t VulkanTexture2D::get_data_size() const
  63 {
  64         return 0;
  65 }
  66
  67 void VulkanTexture2D::unload()
  68 {
  69 }
  70
  71 } // namespace GL
  72 } // namespace Msp