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render/vulkan: add more YCbCr formats 

The Vulkan spec states:

> For the purposes of range expansion and Y′CBCR model conversion,
> the R and B components contain color difference (chroma) values
> and the G component contains luma.

The equations below that sentence also help understand the mapping.
This commit is contained in:
Simon Ser 2023-05-05 13:36:00 +02:00
parent a682fa6c21
commit 16dea12dae
1 changed files with 35 additions and 0 deletions
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35
render/vulkan/pixel_format.c
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@ -145,11 +145,46 @@ static const struct wlr_vk_format formats[] = {
#endif
// YCbCr formats
// R -> V, G -> Y, B -> U
// 420 -> 2x2 subsampled, 422 -> 2x1 subsampled, 444 -> non-subsampled
{
.drm = DRM_FORMAT_UYVY,
.vk = VK_FORMAT_B8G8R8G8_422_UNORM,
.is_ycbcr = true,
},
{
.drm = DRM_FORMAT_YUYV,
.vk = VK_FORMAT_G8B8G8R8_422_UNORM,
.is_ycbcr = true,
},
{
.drm = DRM_FORMAT_NV12,
.vk = VK_FORMAT_G8_B8R8_2PLANE_420_UNORM,
.is_ycbcr = true,
},
{
.drm = DRM_FORMAT_NV16,
.vk = VK_FORMAT_G8_B8R8_2PLANE_422_UNORM,
.is_ycbcr = true,
},
{
.drm = DRM_FORMAT_YUV420,
.vk = VK_FORMAT_G8_B8_R8_3PLANE_420_UNORM,
.is_ycbcr = true,
},
{
.drm = DRM_FORMAT_YUV422,
.vk = VK_FORMAT_G8_B8_R8_3PLANE_422_UNORM,
.is_ycbcr = true,
},
{
.drm = DRM_FORMAT_YUV444,
.vk = VK_FORMAT_G8_B8_R8_3PLANE_444_UNORM,
.is_ycbcr = true,
},
// TODO: add 10, 12 and 16 bit formats
// TODO: add DRM_FORMAT_NV24/VK_FORMAT_G8_B8R8_2PLANE_444_UNORM (requires
// Vulkan 1.3 or VK_EXT_ycbcr_2plane_444_formats)
};
const struct wlr_vk_format *vulkan_get_format_list(size_t *len) {