From 9296706f7b2b60aabff64727cb134410880e997b Mon Sep 17 00:00:00 2001 From: Yuxuan Shui Date: Sun, 10 Mar 2019 19:56:55 +0000 Subject: [PATCH] backend: fix rendering shadow with opacity Shadow opacity should be multiplied with the window's opacity. Signed-off-by: Yuxuan Shui --- src/backend/backend.c | 21 ++++++++++++++++----- src/backend/xrender.c | 23 +++++++++-------------- 2 files changed, 25 insertions(+), 19 deletions(-) diff --git a/src/backend/backend.c b/src/backend/backend.c index 84ab62e..ad37a4f 100644 --- a/src/backend/backend.c +++ b/src/backend/backend.c @@ -134,9 +134,21 @@ void paint_all_new(session_t *ps, win *const t, bool ignore_damage) { } assert(w->shadow_image); - ps->backend_data->ops->compose( - ps->backend_data, w->shadow_image, w->g.x + w->shadow_dx, - w->g.y + w->shadow_dy, ®_shadow, ®_visible); + if (w->opacity == 1) { + ps->backend_data->ops->compose( + ps->backend_data, w->shadow_image, w->g.x + w->shadow_dx, + w->g.y + w->shadow_dy, ®_shadow, ®_visible); + } else { + auto new_img = ps->backend_data->ops->copy( + ps->backend_data, w->shadow_image, ®_visible); + ps->backend_data->ops->image_op( + ps->backend_data, IMAGE_OP_APPLY_ALPHA_ALL, new_img, + NULL, ®_visible, (double[]){w->opacity}); + ps->backend_data->ops->compose( + ps->backend_data, new_img, w->g.x + w->shadow_dx, + w->g.y + w->shadow_dy, ®_shadow, ®_visible); + ps->backend_data->ops->release_image(ps->backend_data, new_img); + } pixman_region32_fini(®_shadow); } @@ -244,8 +256,7 @@ void paint_all_new(session_t *ps, win *const t, bool ignore_damage) { if (ps->o.monitor_repaint) { reg_damage = get_damage(ps, false); - ps->backend_data->ops->fill( - ps->backend_data, 0.5, 0, 0, 0.5, ®_damage); + ps->backend_data->ops->fill(ps->backend_data, 0.5, 0, 0, 0.5, ®_damage); pixman_region32_fini(®_damage); } diff --git a/src/backend/xrender.c b/src/backend/xrender.c index e2cf3e8..4b67aec 100644 --- a/src/backend/xrender.c +++ b/src/backend/xrender.c @@ -348,12 +348,10 @@ static bool image_op(backend_t *base, enum image_operations op, void *image, struct _xrender_data *xd = (void *)base; struct _xrender_image_data *img = image; region_t reg; - double dim_opacity; - double alpha_multiplier; + double *dargs = arg; int *iargs = arg; if (op == IMAGE_OP_APPLY_ALPHA_ALL) { - alpha_multiplier = *(double *)arg; - img->opacity *= alpha_multiplier; + img->opacity *= dargs[0]; img->has_alpha = true; return true; } @@ -388,10 +386,9 @@ static bool image_op(backend_t *base, enum image_operations op, void *image, break; case IMAGE_OP_DIM_ALL: x_set_picture_clip_region(base->c, img->pict, 0, 0, reg_visible); - dim_opacity = *(double *)arg; xcb_render_color_t color = { - .red = 0, .green = 0, .blue = 0, .alpha = 0xffff * dim_opacity}; + .red = 0, .green = 0, .blue = 0, .alpha = 0xffff * dargs[0]}; // Dim the actually content of window xcb_rectangle_t rect = { @@ -411,12 +408,11 @@ static bool image_op(backend_t *base, enum image_operations op, void *image, break; } - alpha_multiplier = *(double *)arg; - if (alpha_multiplier == 1) { + if (dargs[0] == 1) { break; } - auto alpha_pict = xd->alpha_pict[(int)(alpha_multiplier * 255)]; + auto alpha_pict = xd->alpha_pict[(int)(dargs[0] * 255)]; x_set_picture_clip_region(base->c, img->pict, 0, 0, ®); xcb_render_composite(base->c, XCB_RENDER_PICT_OP_IN, img->pict, XCB_NONE, alpha_pict, 0, 0, 0, 0, 0, 0, img->width, img->height); @@ -438,22 +434,21 @@ static void *copy(backend_t *base, const void *image, const region_t *reg) { auto new_img = ccalloc(1, struct _xrender_image_data); assert(img->visual != XCB_NONE); log_trace("xrender: copying %#010x visual %#x", img->pixmap, img->visual); + *new_img = *img; x_set_picture_clip_region(base->c, img->pict, 0, 0, reg); - new_img->has_alpha = img->has_alpha; - new_img->width = img->width; - new_img->height = img->height; - new_img->visual = img->visual; new_img->pixmap = x_create_pixmap(base->c, img->depth, base->root, img->width, img->height); new_img->opacity = 1; new_img->owned = true; if (new_img->pixmap == XCB_NONE) { + log_error("Failed to create pixmap for copy"); free(new_img); return NULL; } new_img->pict = x_create_picture_with_visual_and_pixmap(base->c, img->visual, new_img->pixmap, 0, NULL); - if (new_img->pixmap == XCB_NONE) { + if (new_img->pict == XCB_NONE) { + log_error("Failed to create picture for copy"); xcb_free_pixmap(base->c, new_img->pixmap); free(new_img); return NULL;