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render/pixel-format: add support for block-based formats

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Some formats like sub-sampled YCbCr use a block of bytes to
store the color values for more than one pixel. Update our format
table to be able to handle such formats.
This commit is contained in:
Simon Ser 2023-05-08 22:17:26 +02:00
parent 78a1ac540e
commit 96f3f3c92e
9 changed files with 117 additions and 56 deletions
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7
render/vulkan/renderer.c
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@ -1671,6 +1671,9 @@ static bool vulkan_read_pixels(struct wlr_renderer *wlr_renderer,
wlr_log(WLR_ERROR, "vulkan_read_pixels: could not find pixel format info "
"for DRM format 0x%08x", drm_format);
return false;
} else if (pixel_format_info_pixels_per_block(pixel_format_info) != 1) {
wlr_log(WLR_ERROR, "vulkan_read_pixels: block formats are not supported");
return false;
}
const struct wlr_vk_format *wlr_vk_format = vulkan_get_format_from_drm(drm_format);
@ -1864,13 +1867,13 @@ static bool vulkan_read_pixels(struct wlr_renderer *wlr_renderer,
const char *d = (const char *)v + img_sub_layout.offset;
unsigned char *p = (unsigned char *)data + dst_y * stride;
uint32_t bpp = pixel_format_info->bpp;
uint32_t bytes_per_pixel = pixel_format_info->bytes_per_block;
uint32_t pack_stride = img_sub_layout.rowPitch;
if (pack_stride == stride && dst_x == 0) {
memcpy(p, d, height * stride);
} else {
for (size_t i = 0; i < height; ++i) {
memcpy(p + i * stride + dst_x * bpp / 8, d + i * pack_stride, width * bpp / 8);
memcpy(p + i * stride + dst_x * bytes_per_pixel, d + i * pack_stride, width * bytes_per_pixel);
}
}