From 482a2f85f96cc1db0fcea508cae5c276874b05e1 Mon Sep 17 00:00:00 2001
From: Mikulas Florek <mikulas.florek@gamedev.sk>
Date: Fri, 27 Sep 2019 00:28:12 +0200
Subject: [PATCH] editor icons are darker when they are behind some scene geom

---
 data/pipelines/editor_icon.shd | 14 ++++++++++++--
 data/pipelines/main.pln        | 14 ++++++++++----
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/data/pipelines/editor_icon.shd b/data/pipelines/editor_icon.shd
index 8202ae980..1f4f7ba77 100644
--- a/data/pipelines/editor_icon.shd
+++ b/data/pipelines/editor_icon.shd
@@ -1,3 +1,5 @@
+include "pipelines/common.glsl"
+
 texture_slot {
 	name = "Albedo",
 	default_texture = "textures/common/white.tga"
@@ -16,10 +18,13 @@ vertex_shader [[
 		const vec2 a_uv = vec2(0, 0);
 	#endif
 	layout (location = 0) out vec2 v_uv;
+	layout (location = 1) out vec3 v_wpos;
 	
 	void main() {
 		v_uv = a_uv;
-		gl_Position = u_camera_projection * u_camera_view * u_model * vec4(a_position,  1);
+		vec4 p = u_camera_view * u_model * vec4(a_position,  1);
+		v_wpos = p.xyz;
+		gl_Position = u_camera_projection * p;
 	}
 ]]
 
@@ -27,15 +32,20 @@ vertex_shader [[
 
 fragment_shader [[
 	layout (binding=0) uniform sampler2D u_albedomap;
+	layout (binding=1) uniform sampler2D u_gbuffer_depth;
 	layout (location = 0) in vec2 v_uv;
+	layout (location = 1) in vec3 v_wpos;
 	layout(location = 0) out vec4 o_color;
 
 	void main() {
+		vec2 screen_uv = gl_FragCoord.xy / u_framebuffer_size;
+		vec3 wpos = getViewPosition(u_gbuffer_depth, u_camera_inv_view_projection, screen_uv);
 		vec4 albedo = texture(u_albedomap, v_uv);
 		#ifdef ALPHA_CUTOUT
 			if(albedo.a < 0.5) discard;
 		#endif
 		o_color.rgb = albedo.rgb;
-		o_color.w = 1;
+		o_color.a = 1;
+		if(length(wpos) < length(v_wpos)) o_color.rgb *= 0.25;
 	}
 ]]
\ No newline at end of file
diff --git a/data/pipelines/main.pln b/data/pipelines/main.pln
index b0a02161b..1a3dee0d7 100644
--- a/data/pipelines/main.pln
+++ b/data/pipelines/main.pln
@@ -270,9 +270,11 @@ function main()
 	end
 
 	debugPass(res, shadowmap)
+	local icon_ds = -1
 	if SCENE_VIEW ~= nil then
+		icon_ds = createRenderbuffer(1, 1, true, "depth24stencil8", "icon_ds")
 		pass(getCameraParams())
-			setRenderTargets(res, gbuffer_depth)
+			setRenderTargets(res, icon_ds)
 			clear(CLEAR_DEPTH, 0, 0, 0, 1, 0)
 			renderGizmos()
 	end
@@ -280,11 +282,15 @@ function main()
 	render2D()
 
 	if SCENE_VIEW ~= nil then
-		if enable_icons then 
-			renderIcons()
-		end
 		renderDebugShapes()
 		renderSelectionOutline(res)
+		if enable_icons then 
+			setRenderTargets(res, icon_ds)
+			bindRenderbuffers({
+				gbuffer_depth,
+			}, 1)
+			renderIcons()
+		end
 	end
 
 	setOutput(res)