From e1f4bc5996b1c77c7fa8536b7c03d9eb4140227d Mon Sep 17 00:00:00 2001
From: William McKinnon <contact@willmckinnon.com>
Date: Mon, 15 Apr 2024 01:32:22 -0400
Subject: feat: add functions required by SwayFX (#35)

---
 include/scenefx/render/pass.h | 126 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 include/scenefx/render/pass.h

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

diff --git a/include/scenefx/render/pass.h b/include/scenefx/render/pass.h
new file mode 100644
index 0000000..d005c37
--- /dev/null
+++ b/include/scenefx/render/pass.h
@@ -0,0 +1,126 @@
+#ifndef SCENE_FX_RENDER_PASS_H
+#define SCENE_FX_RENDER_PASS_H
+
+#include <stdbool.h>
+#include <wlr/render/pass.h>
+#include <wlr/render/interface.h>
+#include "scenefx/types/fx/shadow_data.h"
+
+struct fx_gles_render_pass {
+	struct wlr_render_pass base;
+	struct fx_framebuffer *buffer;
+	struct fx_effect_framebuffers *fx_effect_framebuffers;
+	struct wlr_output *output;
+	float projection_matrix[9];
+	struct fx_render_timer *timer;
+};
+
+enum corner_location { TOP_LEFT, TOP_RIGHT, BOTTOM_RIGHT, BOTTOM_LEFT, ALL };
+
+/**
+ * Begin a new render pass with the supplied destination buffer.
+ *
+ * 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 *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;
+	const struct wlr_box *clip_box; // Used to clip csd. Ignored if NULL
+	int corner_radius;
+	bool has_titlebar;
+	bool discard_transparent;
+	float dim;
+	struct wlr_render_color dim_color;
+};
+
+struct fx_render_rect_options {
+	struct wlr_render_rect_options base;
+	// TODO: Add effects here in the future
+};
+
+struct fx_render_box_shadow_options {
+	struct wlr_box shadow_box;
+	struct wlr_box clip_box;
+	/* Clip region, leave NULL to disable clipping */
+	const pixman_region32_t *clip;
+
+	struct shadow_data *shadow_data;
+	int corner_radius;
+};
+
+struct fx_render_rounded_rect_options {
+	struct wlr_render_rect_options base;
+	int corner_radius;
+	enum corner_location corner_location;
+};
+
+struct fx_render_rounded_border_corner_options {
+	struct wlr_render_rect_options base;
+	int corner_radius;
+	int border_thickness;
+	enum corner_location corner_location;
+};
+
+struct fx_render_blur_pass_options {
+	struct fx_render_texture_options tex_options;
+	pixman_region32_t *opaque_region;
+	struct fx_framebuffer *current_buffer;
+	struct blur_data *blur_data;
+	bool use_optimized_blur;
+	bool ignore_transparent;
+};
+
+/**
+ * Render a fx texture.
+ */
+void fx_render_pass_add_texture(struct fx_gles_render_pass *render_pass,
+	const struct fx_render_texture_options *options);
+
+/**
+ * Render a rectangle.
+ */
+void fx_render_pass_add_rect(struct fx_gles_render_pass *render_pass,
+	const struct fx_render_rect_options *options);
+
+/**
+ * Render a rounded rectangle.
+ */
+void fx_render_pass_add_rounded_rect(struct fx_gles_render_pass *render_pass,
+	const struct fx_render_rounded_rect_options *options);
+
+/**
+ * Render a border corner.
+ */
+void fx_render_pass_add_rounded_border_corner(struct fx_gles_render_pass *render_pass,
+	const struct fx_render_rounded_border_corner_options *options);
+
+/**
+ * Render a box shadow.
+ */
+void fx_render_pass_add_box_shadow(struct fx_gles_render_pass *pass,
+		const struct fx_render_box_shadow_options *options);
+
+/**
+ * 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, bool transformed_region);
+
+#endif
-- 
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