source/backends/vulkan/texture1d_backend.cpp

   1 #include "device.h"
   2 #include "texture1d.h"
   3 #include "texture1d_backend.h"
   4 #include "vulkan.h"
   5
   6 using namespace std;
   7
   8 namespace Msp {
   9 namespace GL {
  10
  11 VulkanTexture1D::VulkanTexture1D():
  12         Texture(VK_IMAGE_VIEW_TYPE_1D)
  13 { }
  14
  15 void VulkanTexture1D::fill_image_info(void *ii) const
  16 {
  17         const Texture1D &self = *static_cast<const Texture1D *>(this);
  18
  19         VkImageCreateInfo *image_info = static_cast<VkImageCreateInfo *>(ii);
  20         image_info->imageType = VK_IMAGE_TYPE_1D;
  21         image_info->extent.width = self.width;
  22         image_info->mipLevels = self.levels;
  23 }
  24
  25 void VulkanTexture1D::sub_image(unsigned level, int x, unsigned wd, const void *data)
  26 {
  27         const Texture1D &self = *static_cast<const Texture1D *>(this);
  28
  29         unsigned level_size = self.get_level_size(level);
  30         change_layout(self.levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, (x==0 && wd==level_size));
  31
  32         size_t data_size = wd*get_pixel_size(storage_fmt);
  33         void *staging = device.get_transfer_queue().prepare_transfer(data_size,
  34                 [this, level, x, wd](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  35                         const VulkanFunctions &vk = device.get_functions();
  36
  37                         VkBufferImageCopy region = { };
  38                         region.bufferOffset = src_off;
  39                         region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  40                         region.imageSubresource.mipLevel = level;
  41                         region.imageSubresource.baseArrayLayer = 0;
  42                         region.imageSubresource.layerCount = 1;
  43                         region.imageOffset = { x, 0, 0 };
  44                         region.imageExtent = { wd, 1, 1 };
  45                         vk.CmdCopyBufferToImage(cmd_buf, staging_buf, handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
  46                 });
  47
  48         const char *src = static_cast<const char *>(data);
  49         copy(src, src+data_size, static_cast<char *>(staging));
  50 }
  51
  52 size_t VulkanTexture1D::get_data_size() const
  53 {
  54         return 0;
  55 }
  56
  57 } // namespace GL
  58 } // namespace Msp