From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 8 May 2021 11:45:28 +0000 (+0300)
Subject: Use PBR with IBL for the sphere in desert pillars
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=e03a752116ab28283bf89dddf1228804cc853a7b

Use PBR with IBL for the sphere in desert pillars
---

diff --git a/demos/desertpillars/data/exported/Iron.tech b/demos/desertpillars/data/exported/Iron.tech
index 57d0f12d..d3852af9 100644
--- a/demos/desertpillars/data/exported/Iron.tech
+++ b/demos/desertpillars/data/exported/Iron.tech
@@ -5,12 +5,12 @@ pass ""
 		type pbr;
 		base_color 0.550000 0.570000 0.570000 1.00000;
 		metalness 1.00000;
-		roughness 0.0500000;
+		roughness 0.200000;
 		emission 0.00000 0.00000 0.00000;
 	};
-	receive_shadows true;
+	shader "sphere.shader";
 };
 pass "shadow"
 {
-	shader "_occluder.glsl.shader";
+	shader "sphere_shadow.glsl.shader";
 };
diff --git a/demos/desertpillars/data/sphere.glsl b/demos/desertpillars/data/sphere.glsl
index 6144acaa..0dd872bd 100644
--- a/demos/desertpillars/data/sphere.glsl
+++ b/demos/desertpillars/data/sphere.glsl
@@ -1,38 +1,2 @@
-import phong;
-
-uniform Morph
-{
-	float morph;
-};
-
-const float PI = 3.1415926535;
-const float OFFSET = 0.001;
-
-#pragma MSP stage(vertex)
-vec3 deform(vec3 p)
-{
-	vec3 d = cos(p*(2.0*PI)+morph)*0.05;
-	return p*(1.0+(d.x+d.y+d.z)*sin(morph*0.2));
-}
-
-vec4 get_vertex_position() override
-{
-	return vec4(deform(vertex.xyz), 1.0);
-}
-
-vec3 get_vertex_normal() override
-{
-	vec3 tangent;
-	if(abs(normal.x)>abs(normal.y))
-		tangent = normalize(vec3(-normal.z, 0.0, normal.x));
-	else
-		tangent = normalize(vec3(0.0, -normal.z, normal.y));
-	vec3 binormal = cross(normal, tangent);
-
-	vec3 xn = deform(vertex.xyz-tangent*OFFSET);
-	vec3 xp = deform(vertex.xyz+tangent*OFFSET);
-	vec3 yn = deform(vertex.xyz-binormal*OFFSET);
-	vec3 yp = deform(vertex.xyz+binormal*OFFSET);
-
-	return normalize(cross(xp-xn, yp-yn));
-}
+import cooktorrance;
+import sphere_morph;
diff --git a/demos/desertpillars/data/sphere.shader b/demos/desertpillars/data/sphere.shader
index ba938ff3..d203cd1b 100644
--- a/demos/desertpillars/data/sphere.shader
+++ b/demos/desertpillars/data/sphere.shader
@@ -1,5 +1,4 @@
 module "sphere.glsl"
 {
-	specialize "use_specular" true;
-	specialize "use_reflectivity" true;
+	specialize "use_image_based_lighting" true;
 };
diff --git a/demos/desertpillars/data/sphere_morph.glsl b/demos/desertpillars/data/sphere_morph.glsl
new file mode 100644
index 00000000..e020ed68
--- /dev/null
+++ b/demos/desertpillars/data/sphere_morph.glsl
@@ -0,0 +1,36 @@
+uniform Morph
+{
+	float morph;
+};
+
+const float PI = 3.1415926535;
+const float OFFSET = 0.001;
+
+#pragma MSP stage(vertex)
+vec3 deform(vec3 p)
+{
+	vec3 d = cos(p*(2.0*PI)+morph)*0.05;
+	return p*(1.0+(d.x+d.y+d.z)*sin(morph*0.2));
+}
+
+vec4 get_vertex_position() override
+{
+	return vec4(deform(vertex.xyz), 1.0);
+}
+
+vec3 get_vertex_normal() override
+{
+	vec3 tangent;
+	if(abs(normal.x)>abs(normal.y))
+		tangent = normalize(vec3(-normal.z, 0.0, normal.x));
+	else
+		tangent = normalize(vec3(0.0, -normal.z, normal.y));
+	vec3 binormal = cross(normal, tangent);
+
+	vec3 xn = deform(vertex.xyz-tangent*OFFSET);
+	vec3 xp = deform(vertex.xyz+tangent*OFFSET);
+	vec3 yn = deform(vertex.xyz-binormal*OFFSET);
+	vec3 yp = deform(vertex.xyz+binormal*OFFSET);
+
+	return normalize(cross(xp-xn, yp-yn));
+}
diff --git a/demos/desertpillars/data/sphere_phong.object b/demos/desertpillars/data/sphere_phong.object
deleted file mode 100644
index b8f75dcb..00000000
--- a/demos/desertpillars/data/sphere_phong.object
+++ /dev/null
@@ -1,2 +0,0 @@
-mesh "Sphere.mesh";
-technique "sphere_phong.tech";
diff --git a/demos/desertpillars/data/sphere_phong.tech b/demos/desertpillars/data/sphere_phong.tech
deleted file mode 100644
index 638d243c..00000000
--- a/demos/desertpillars/data/sphere_phong.tech
+++ /dev/null
@@ -1,16 +0,0 @@
-pass ""
-{
-	material
-	{
-		type basic;
-		diffuse 0.0 0.0 0.0;
-		specular 0.77 0.78 0.78;
-		reflectivity 0.77;
-	};
-	shader "sphere.shader";
-};
-pass "shadow"
-{
-	//shader "_occluder.glsl.shader";
-	shader "sphere.shader";
-};
diff --git a/demos/desertpillars/data/sphere_shadow.glsl b/demos/desertpillars/data/sphere_shadow.glsl
new file mode 100644
index 00000000..1064389c
--- /dev/null
+++ b/demos/desertpillars/data/sphere_shadow.glsl
@@ -0,0 +1,8 @@
+import common;
+import sphere_morph;
+
+#pragma MSP stage(fragment)
+void main()
+{
+	frag_color = vec4(1.0);
+}
diff --git a/demos/desertpillars/scene.blend b/demos/desertpillars/scene.blend
index e519cfb5..847ef1a4 100644
Binary files a/demos/desertpillars/scene.blend and b/demos/desertpillars/scene.blend differ
diff --git a/demos/desertpillars/source/desertpillars.cpp b/demos/desertpillars/source/desertpillars.cpp
index bdbc069e..6cde69b0 100644
--- a/demos/desertpillars/source/desertpillars.cpp
+++ b/demos/desertpillars/source/desertpillars.cpp
@@ -24,7 +24,7 @@ DesertPillars::DesertPillars(int, char **):
 	keyboard(window),
 	view(window, gl_ctx),
 	camera(resources.get<GL::Camera>("Camera.camera")),
-	sphere(resources.get<GL::Object>("sphere_phong.object")),
+	sphere(resources.get<GL::Object>("Sphere.object")),
 	sphere_morph(0.0f),
 	sphere_frozen(false),
 	sphere_stopped(false),
@@ -55,7 +55,7 @@ DesertPillars::DesertPillars(int, char **):
 	step->set_lighting(&resources.get<GL::Lighting>("Desert.lightn"));
 	step->set_depth_test(&GL::DepthTest::lequal());
 
-	env_map = make_unique<GL::EnvironmentMap>(256, GL::RGB16F, sphere, *env_seq);
+	env_map = make_unique<GL::EnvironmentMap>(256, GL::RGB16F, 7, sphere, *env_seq);
 	sphere.set_matrix(GL::Matrix::translation(GL::Vector3(0.0f, 0.0f, 3.3f)));
 
 	content.add(resources.get<GL::Scene>("Background.scene"));