mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2026-03-06 01:40:52 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

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

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

8
render/gles2/renderer.c
View file

@ -464,6 +464,10 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
const struct wlr_pixel_format_info *drm_fmt =
drm_get_pixel_format_info(fmt->drm_format);
assert(drm_fmt);
if (pixel_format_info_pixels_per_block(drm_fmt) != 1) {
wlr_log(WLR_ERROR, "Cannot read pixels: block formats are not supported");
return false;
}
push_gles2_debug(renderer);
@ -474,7 +478,7 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
unsigned char *p = (unsigned char *)data + dst_y * stride;
glPixelStorei(GL_PACK_ALIGNMENT, 1);
uint32_t pack_stride = width * drm_fmt->bpp / 8;
uint32_t pack_stride = pixel_format_info_min_stride(drm_fmt, width);
if (pack_stride == stride && dst_x == 0) {
// Under these particular conditions, we can read the pixels with only
// one glReadPixels call
@ -486,7 +490,7 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
for (size_t i = 0; i < height; ++i) {
uint32_t y = src_y + i;
glReadPixels(src_x, y, width, 1, fmt->gl_format,
fmt->gl_type, p + i * stride + dst_x * drm_fmt->bpp / 8);
fmt->gl_type, p + i * stride + dst_x * drm_fmt->bytes_per_block);
}
}