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output-layer: add cropping support

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Add a src_box state field. Use the SRC_* KMS props in the DRM
backend, reject the layers in the Wayland backend (for now, we can
support it later via viewporter).
This commit is contained in:
Simon Ser 2023-04-20 10:39:46 +02:00
parent d795824346
commit 44069dfd5e
4 changed files with 23 additions and 4 deletions
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16
backend/drm/libliftoff.c
View file

@ -201,10 +201,18 @@ static bool set_layer_props(struct wlr_drm_backend *drm,
uint64_t crtc_w = (uint64_t)state->dst_box.width;
uint64_t crtc_h = (uint64_t)state->dst_box.height;
uint64_t src_x = to_fp16(0);
uint64_t src_y = to_fp16(0);
uint64_t src_w = to_fp16(width);
uint64_t src_h = to_fp16(height);
struct wlr_fbox src_box = state->src_box;
if (wlr_fbox_empty(&src_box)) {
src_box = (struct wlr_fbox){
.width = width,
.height = height,
};
}
uint64_t src_x = to_fp16(src_box.x);
uint64_t src_y = to_fp16(src_box.y);
uint64_t src_w = to_fp16(src_box.width);
uint64_t src_h = to_fp16(src_box.height);
return
liftoff_layer_set_property(layer->liftoff, "zpos", zpos) == 0 &&

7
backend/wayland/output.c
View file

@ -294,6 +294,13 @@ static bool output_test(struct wlr_output *wlr_output,
height != layer_state->dst_box.height) {
supported = false;
}
if (!wlr_fbox_empty(&layer_state->src_box)) {
supported = supported &&
layer_state->src_box.x == 0 &&
layer_state->src_box.y == 0 &&
layer_state->src_box.width == width &&
layer_state->src_box.height == height;
}
supported = supported &&
test_buffer(output->backend, layer_state->buffer);
}