[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

1 files changed, 7 insertions, 7 deletions

diff --git a/render/fx_renderer/gles2/shaders/stencil_mask.frag b/render/fx_renderer/gles2/shaders/stencil_mask.frag
index 523adc8..e1fd76a 100644
--- a/render/fx_renderer/gles2/shaders/stencil_mask.frag
+++ b/render/fx_renderer/gles2/shaders/stencil_mask.frag
@@ -11,12 +11,12 @@ uniform vec2 position;
 uniform float radius;
 
 void main() {
-    vec2 q = abs(gl_FragCoord.xy - position - half_size) - half_size + radius;
-    float dist = min(max(q.x,q.y), 0.0) + length(max(q, 0.0)) - radius;
-    float smoothedAlpha = 1.0 - smoothstep(-1.0, 0.5, dist);
-    gl_FragColor = mix(vec4(0.0), vec4(1.0), smoothedAlpha);
+	vec2 q = abs(gl_FragCoord.xy - position - half_size) - half_size + radius;
+	float dist = min(max(q.x,q.y), 0.0) + length(max(q, 0.0)) - radius;
+	float smoothedAlpha = 1.0 - smoothstep(-1.0, 0.5, dist);
+	gl_FragColor = mix(vec4(0.0), vec4(1.0), smoothedAlpha);
 
-    if (gl_FragColor.a < 1.0) {
-        discard;
-    }
+	if (gl_FragColor.a < 1.0) {
+		discard;
+	}
 }