render/gles2: reword wlr_gles2_texture comments

These comments were a bit misleading:

- "GL_TEXTURE_2D == mutable": not really, imported non-external-only
  DMA-BUFs would also use this target, but are not mutable.
- "Only affects target == GL_TEXTURE_2D": same here.
- "If imported from a wlr_buffer": not really, would be NULL if
  imported from a shm wlr_buffer.

Adjust these comments to better reflect reality and adjust the check
in gles2_texture_update_from_buffer().

1 files changed, 1 insertions, 1 deletions

diff --git a/render/gles2/texture.c b/render/gles2/texture.c
index 51c6290d..3c9720c1 100644
--- a/render/gles2/texture.c
+++ b/render/gles2/texture.c
@@ -32,7 +32,7 @@ static bool gles2_texture_update_from_buffer(struct wlr_texture *wlr_texture,
 		struct wlr_buffer *buffer, const pixman_region32_t *damage) {
 	struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
 
-	if (texture->target != GL_TEXTURE_2D || texture->buffer) {
+	if (texture->drm_format == DRM_FORMAT_INVALID) {
 		return false;
 	}