From a93fc8afd60646243ee635b443fc2a17e2d97a18 Mon Sep 17 00:00:00 2001 From: Simon Ser Date: Tue, 2 May 2023 21:32:51 +0200 Subject: render: introduce blend mode Allow callers to pick the blend mode when rendering a rect. The "none" mode can be used to disable blending and clear rects. --- render/pixman/pass.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'render/pixman/pass.c') diff --git a/render/pixman/pass.c b/render/pixman/pass.c index f6e7db0d..3f0927ee 100644 --- a/render/pixman/pass.c +++ b/render/pixman/pass.c @@ -143,6 +143,17 @@ static void render_pass_add_rect(struct wlr_render_pass *wlr_pass, struct wlr_pixman_buffer *buffer = pass->buffer; struct wlr_box box = options->box; + pixman_op_t op = 0; + switch (options->blend_mode) { + case WLR_RENDER_BLEND_MODE_PREMULTIPLIED: + op = options->color.a == 1 ? PIXMAN_OP_SRC : PIXMAN_OP_OVER; + break; + case WLR_RENDER_BLEND_MODE_NONE: + op = PIXMAN_OP_SRC; + break; + } + assert(op != 0); + struct pixman_color color = { .red = options->color.r * 0xFFFF, .green = options->color.g * 0xFFFF, @@ -153,7 +164,7 @@ static void render_pass_add_rect(struct wlr_render_pass *wlr_pass, pixman_image_t *fill = pixman_image_create_solid_fill(&color); pixman_image_set_clip_region32(buffer->image, (pixman_region32_t *)options->clip); - pixman_image_composite32(PIXMAN_OP_OVER, fill, NULL, buffer->image, + pixman_image_composite32(op, fill, NULL, buffer->image, 0, 0, 0, 0, box.x, box.y, box.width, box.height); pixman_image_set_clip_region32(buffer->image, NULL); -- cgit v1.2.3