source/backends/vulkan/texture3d_backend.cpp

   1 #include "device.h"
   2 #include "texture3d.h"
   3 #include "texture3d_backend.h"
   4 #include "vulkan.h"
   5
   6 using namespace std;
   7
   8 namespace Msp {
   9 namespace GL {
  10
  11 VulkanTexture3D::VulkanTexture3D():
  12         Texture(VK_IMAGE_VIEW_TYPE_3D)
  13 { }
  14
  15 VulkanTexture3D::VulkanTexture3D(unsigned t):
  16         Texture(t)
  17 { }
  18
  19 void VulkanTexture3D::fill_image_info(void *ii) const
  20 {
  21         const Texture3D &self = *static_cast<const Texture3D *>(this);
  22
  23         VkImageCreateInfo *image_info = static_cast<VkImageCreateInfo *>(ii);
  24         image_info->imageType = VK_IMAGE_TYPE_3D;
  25         image_info->extent.width = self.width;
  26         image_info->extent.height = self.height;
  27         image_info->extent.depth = self.depth;
  28         image_info->mipLevels = self.levels;
  29 }
  30
  31 void VulkanTexture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, const void *data)
  32 {
  33         const Texture3D &self = *static_cast<const Texture3D *>(this);
  34
  35         auto level_size = self.get_level_size(level);
  36         bool discard = (x==0 && y==0 && z==0 && wd==level_size.x && ht==level_size.y && dp==level_size.z);
  37
  38         size_t data_size = wd*ht*dp*get_pixel_size(storage_fmt);
  39         void *staging = device.get_transfer_queue().prepare_transfer(data_size,
  40                 [this, level, discard](){
  41                         unsigned n_levels = static_cast<const Texture3D *>(this)->levels;
  42                         change_layout(n_levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
  43                 },
  44                 [this, level, x, y, z, wd, ht, dp](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  45                         const VulkanFunctions &vk = device.get_functions();
  46
  47                         VkBufferImageCopy region = { };
  48                         region.bufferOffset = src_off;
  49                         region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  50                         region.imageSubresource.mipLevel = level;
  51                         region.imageSubresource.baseArrayLayer = (is_array() ? z : 0);
  52                         region.imageSubresource.layerCount = (is_array() ? dp : 1);
  53                         region.imageOffset = { x, y, (is_array() ? 0 : z) };
  54                         region.imageExtent = { wd, ht, (is_array() ? 1 : dp) };
  55                         vk.CmdCopyBufferToImage(cmd_buf, staging_buf, handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
  56                 });
  57
  58         const char *src = static_cast<const char *>(data);
  59         copy(src, src+data_size, static_cast<char *>(staging));
  60 }
  61
  62 bool VulkanTexture3D::is_array() const
  63 {
  64         return view_type==VK_IMAGE_VIEW_TYPE_2D_ARRAY;
  65 }
  66
  67 size_t VulkanTexture3D::get_data_size() const
  68 {
  69         return 0;
  70 }
  71
  72 } // namespace GL
  73 } // namespace Msp