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[libs/gl.git] / 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