render: Don't crash on 0 dimensions
Don't force compositors to check when an empty shape is being renderered. References #2282. This was motivated by dwl crashing when setting window borders to 0 (djpohly/dwl#51).
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@ -99,6 +99,9 @@ bool wlr_render_subtexture_with_matrix(struct wlr_renderer *r,
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void wlr_render_rect(struct wlr_renderer *r, const struct wlr_box *box,
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const float color[static 4], const float projection[static 9]) {
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if (box->width == 0 || box->height == 0) {
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return;
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}
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assert(box->width > 0 && box->height > 0);
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float matrix[9];
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wlr_matrix_project_box(matrix, box, WL_OUTPUT_TRANSFORM_NORMAL, 0,
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@ -115,6 +118,9 @@ void wlr_render_quad_with_matrix(struct wlr_renderer *r,
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void wlr_render_ellipse(struct wlr_renderer *r, const struct wlr_box *box,
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const float color[static 4], const float projection[static 9]) {
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if (box->width == 0 || box->height == 0) {
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return;
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}
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assert(box->width > 0 && box->height > 0);
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float matrix[9];
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wlr_matrix_project_box(matrix, box, WL_OUTPUT_TRANSFORM_NORMAL, 0,
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