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viewporter: fix src buffer bounds check
The surface scale and transform are applied before the viewport. Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3766
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7dcb045176
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1 changed files with 11 additions and 4 deletions
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@ -3,6 +3,7 @@
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#include <wlr/types/wlr_compositor.h>
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#include <wlr/types/wlr_compositor.h>
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#include <wlr/types/wlr_viewporter.h>
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#include <wlr/types/wlr_viewporter.h>
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#include <wlr/util/log.h>
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#include <wlr/util/log.h>
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#include <wlr/util/transform.h>
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#include "viewporter-protocol.h"
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#include "viewporter-protocol.h"
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#define VIEWPORTER_VERSION 1
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#define VIEWPORTER_VERSION 1
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@ -131,6 +132,15 @@ static void viewport_handle_resource_destroy(struct wl_resource *resource) {
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viewport_destroy(viewport);
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viewport_destroy(viewport);
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}
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}
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static bool check_src_buffer_bounds(const struct wlr_surface_state *state) {
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int width = state->buffer_width / state->scale;
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int height = state->buffer_height / state->scale;
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wlr_output_transform_coords(state->transform, &width, &height);
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struct wlr_fbox box = state->viewport.src;
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return box.x + box.width <= width && box.y + box.height <= height;
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}
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static void viewport_handle_surface_client_commit(struct wl_listener *listener,
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static void viewport_handle_surface_client_commit(struct wl_listener *listener,
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void *data) {
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void *data) {
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struct wlr_viewport *viewport =
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struct wlr_viewport *viewport =
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@ -148,10 +158,7 @@ static void viewport_handle_surface_client_commit(struct wl_listener *listener,
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}
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}
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if (state->viewport.has_src && state->buffer != NULL &&
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if (state->viewport.has_src && state->buffer != NULL &&
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(state->viewport.src.x + state->viewport.src.width >
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!check_src_buffer_bounds(state)) {
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state->buffer_width ||
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state->viewport.src.y + state->viewport.src.height >
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state->buffer_height)) {
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wl_resource_post_error(viewport->resource, WP_VIEWPORT_ERROR_OUT_OF_BUFFER,
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wl_resource_post_error(viewport->resource, WP_VIEWPORT_ERROR_OUT_OF_BUFFER,
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"source rectangle out of buffer bounds");
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"source rectangle out of buffer bounds");
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return;
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return;
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