From 7f0883b383b73af7bc68dcf8c2ee845c5eab5807 Mon Sep 17 00:00:00 2001
From: Erik Reider <35975961+ErikReider@users.noreply.github.com>
Date: Tue, 27 Feb 2024 18:05:58 +0100
Subject: [FX Renderer] Add blur (#30)

* Initial blur implementation

* Added additional blur effects from SwayFX

* Simplified blur pass functions to match the other pass functions

* Minor fixes

* Added support for optimized blur

* tinywl: Don't set decoration values every frame

* Updated public blur function docs

* Simplified blur buffer management

* Moved ignore transparent bool into a per buffer option

* Clip the scene_buffer when blur is enabled

* Added back corner and shadow checks in opaque_region function

* Renamed fx_render_blur_options to fx_render_blur_pass_options

* Fixed nits

* Removed unused fx_framebuffer_bind_wlr_fbo function

* Removed wlr_scene impl. Should be moved into future PR instead

* Made blur impl independent of wlr_scene

* Moved shader init back into fx_renderer.c

* Renamed fx_framebuffer_get_or_create_bufferless to fx_framebuffer_get_or_create_custom
---
 include/render/pass.h | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

(limited to 'include/render/pass.h')

diff --git a/include/render/pass.h b/include/render/pass.h
index 52666fe..db33ff6 100644
--- a/include/render/pass.h
+++ b/include/render/pass.h
@@ -20,14 +20,16 @@ struct fx_gles_render_pass {
  * Callers must call wlr_render_pass_submit() once they are done with the
  * render pass.
  */
-struct fx_gles_render_pass *fx_renderer_begin_buffer_pass(struct wlr_renderer *renderer,
-	struct wlr_buffer *buffer, const struct wlr_buffer_pass_options *options);
+struct fx_gles_render_pass *fx_renderer_begin_buffer_pass(struct wlr_renderer *wlr_renderer,
+		struct wlr_buffer *wlr_buffer, struct wlr_output *output,
+		const struct wlr_buffer_pass_options *options);
 
 struct fx_render_texture_options {
 	struct wlr_render_texture_options base;
 	float scale;
 	struct wlr_box *clip_box; // Used to clip csd. Ignored if NULL
 	int corner_radius;
+	bool discard_transparent;
 };
 
 struct fx_render_texture_options fx_render_texture_options_default(
@@ -41,6 +43,17 @@ struct fx_render_rect_options {
 struct fx_render_rect_options fx_render_rect_options_default(
 		const struct wlr_render_rect_options *base);
 
+struct fx_render_blur_pass_options {
+	struct fx_render_texture_options tex_options;
+	pixman_region32_t *opaque_region;
+	struct wlr_output *output;
+	struct wlr_box monitor_box;
+	struct fx_framebuffer *current_buffer;
+	struct blur_data *blur_data;
+	bool use_optimized_blur;
+	bool ignore_transparent;
+};
+
 /**
  * Render a fx texture.
  */
@@ -66,4 +79,23 @@ void fx_render_pass_add_box_shadow(struct fx_gles_render_pass *pass,
 		const struct fx_render_rect_options *fx_options,
 		int corner_radius, struct shadow_data *shadow_data);
 
+/**
+ * Render blur.
+ */
+void fx_render_pass_add_blur(struct fx_gles_render_pass *pass,
+		struct fx_render_blur_pass_options *fx_options);
+
+/**
+ * Render optimized blur.
+ */
+void fx_render_pass_add_optimized_blur(struct fx_gles_render_pass *pass,
+		struct fx_render_blur_pass_options *fx_options);
+
+/**
+ * Render from one buffer to another
+ */
+void fx_renderer_read_to_buffer(struct fx_gles_render_pass *pass,
+		pixman_region32_t *region, struct fx_framebuffer *dst_buffer,
+		struct fx_framebuffer *src_buffer);
+
 #endif
-- 
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