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weston_buffer: Add pixel format and modifier info

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Promote these to weston_buffer rather than burying them in the renderers
and backends.

Signed-off-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Daniel Stone
2022-01-14 01:55:50 +00:00
parent fef8bb275c
commit 6dcf3eac1f
3 changed files with 56 additions and 1 deletions
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libweston/renderer-gl/gl-renderer.c
+34 -1
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@@ -2158,6 +2158,8 @@ gl_renderer_fill_buffer_info(struct weston_compositor *ec,
struct weston_buffer *buffer)
{
struct gl_renderer *gr = get_renderer(ec);
EGLint format;
uint32_t fourcc;
bool ret = true;
buffer->legacy_buffer = (struct wl_buffer *)buffer->resource;
@@ -2165,6 +2167,37 @@ gl_renderer_fill_buffer_info(struct weston_compositor *ec,
EGL_WIDTH, &buffer->width);
ret &= gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_HEIGHT, &buffer->height);
ret &= gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_TEXTURE_FORMAT, &format);
if (!ret)
return false;
/* The legacy EGL buffer interface only describes the channels we can
* sample from; not their depths or order. Take a stab at something
* which might be representative. Pessimise extremely hard for
* TEXTURE_EXTERNAL_OES. */
switch (format) {
case EGL_TEXTURE_RGB:
fourcc = DRM_FORMAT_XRGB8888;
break;
case EGL_TEXTURE_EXTERNAL_WL:
case EGL_TEXTURE_RGBA:
fourcc = DRM_FORMAT_ARGB8888;
break;
case EGL_TEXTURE_Y_XUXV_WL:
fourcc = DRM_FORMAT_YUYV;
break;
case EGL_TEXTURE_Y_UV_WL:
fourcc = DRM_FORMAT_NV12;
break;
case EGL_TEXTURE_Y_U_V_WL:
fourcc = DRM_FORMAT_YUV420;
break;
}
buffer->pixel_format = pixel_format_get_info(fourcc);
assert(buffer->pixel_format);
buffer->format_modifier = DRM_FORMAT_MOD_INVALID;
/* Assume scanout co-ordinate space i.e. (0,0) is top-left
* if the query fails */
@@ -2172,7 +2205,7 @@ gl_renderer_fill_buffer_info(struct weston_compositor *ec,
gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_WAYLAND_Y_INVERTED_WL, &buffer->y_inverted);
return ret;
return true;
}
static void