From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 16 Oct 2021 16:01:44 +0000 (+0300)
Subject: Add a moving point light to the night phase of desertpillars
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=33577fd6ef75f1c3af77720fde351459727ca68c

Add a moving point light to the night phase of desertpillars
---

diff --git a/demos/desertpillars/data/billboard.glsl b/demos/desertpillars/data/billboard.glsl
new file mode 100644
index 00000000..959c4630
--- /dev/null
+++ b/demos/desertpillars/data/billboard.glsl
@@ -0,0 +1,7 @@
+import unlit;
+
+#pragma MSP stage(vertex)
+vec4 get_vertex_position() override
+{
+	return vec4(mat3(world_eye_matrix)*vertex.xyz, 1.0);
+}
diff --git a/demos/desertpillars/data/exported/Desert.lightn b/demos/desertpillars/data/exported/Desert.lightn
index 25144b2e..2747c787 100644
--- a/demos/desertpillars/data/exported/Desert.lightn
+++ b/demos/desertpillars/data/exported/Desert.lightn
@@ -1,2 +1,3 @@
 ambient 0.320000 0.480000 0.880000;
 light "Sun.light";
+light "Wisp.light";
diff --git a/demos/desertpillars/data/exported/Desert.scene b/demos/desertpillars/data/exported/Desert.scene
index bdf14015..f46a621b 100644
--- a/demos/desertpillars/data/exported/Desert.scene
+++ b/demos/desertpillars/data/exported/Desert.scene
@@ -13,3 +13,16 @@ scene
 		};
 	};
 };
+scene
+{
+	type zsorted;
+	object "Flare.object" "Flare"
+	{
+		transform
+		{
+			position 0.0409660 -1.87497 3.35741;
+			euler 0.00000 -0.00000 0.00000;
+			scale 1.00000 1.00000 1.00000;
+		};
+	};
+};
diff --git a/demos/desertpillars/data/exported/Desert.seq b/demos/desertpillars/data/exported/Desert.seq
index 34213785..be6377e9 100644
--- a/demos/desertpillars/data/exported/Desert.seq
+++ b/demos/desertpillars/data/exported/Desert.seq
@@ -10,6 +10,12 @@ step "" "content"
 	lighting "Desert.lightn";
 	scene "Desert.scene";
 };
+step "blended" "content"
+{
+	depth_test LEQUAL;
+	lighting "Desert.lightn";
+	scene "Desert.scene";
+};
 ambient_occlusion
 {
 	occlusion_radius 0.500000;
diff --git a/demos/desertpillars/data/exported/Flare.mat b/demos/desertpillars/data/exported/Flare.mat
new file mode 100644
index 00000000..7b318175
--- /dev/null
+++ b/demos/desertpillars/data/exported/Flare.mat
@@ -0,0 +1,3 @@
+type unlit;
+texture "flare.png.tex";
+sampler "linear_mip.samp";
diff --git a/demos/desertpillars/data/exported/Flare.mesh b/demos/desertpillars/data/exported/Flare.mesh
new file mode 100644
index 00000000..b77a058e
--- /dev/null
+++ b/demos/desertpillars/data/exported/Flare.mesh
@@ -0,0 +1,16 @@
+vertices NORMAL3_BYTE TEXCOORD2_USHORT VERTEX3_FLOAT
+{
+	normal 0.00000 0.00000 1.00000;
+	texcoord 1.00000 0.00000;
+	vertex 0.150000 -0.150000 0.00000;
+	texcoord 1.00000 1.00000;
+	vertex 0.150000 0.150000 0.00000;
+	texcoord 0.00000 0.00000;
+	vertex -0.150000 -0.150000 0.00000;
+	texcoord 0.00000 1.00000;
+	vertex -0.150000 0.150000 0.00000;
+};
+batch TRIANGLE_STRIP
+{
+	indices 0 1 2 3;
+};
diff --git a/demos/desertpillars/data/exported/Flare.object b/demos/desertpillars/data/exported/Flare.object
new file mode 100644
index 00000000..f8aa36d7
--- /dev/null
+++ b/demos/desertpillars/data/exported/Flare.object
@@ -0,0 +1,3 @@
+bounding_sphere_hint 0.00000 0.00000 0.00000 0.212132;
+mesh "Flare.mesh";
+technique "Flare.tech";
diff --git a/demos/desertpillars/data/exported/Flare.tech b/demos/desertpillars/data/exported/Flare.tech
new file mode 100644
index 00000000..c04117ed
--- /dev/null
+++ b/demos/desertpillars/data/exported/Flare.tech
@@ -0,0 +1,6 @@
+method "blended"
+{
+	material "Flare.mat";
+	blend SRC_ALPHA ONE;
+	shader "flare.glsl.shader";
+};
diff --git a/demos/desertpillars/data/exported/Iron.tech b/demos/desertpillars/data/exported/Iron.tech
index 1e55ffba..7fa4e39b 100644
--- a/demos/desertpillars/data/exported/Iron.tech
+++ b/demos/desertpillars/data/exported/Iron.tech
@@ -7,3 +7,7 @@ method "shadow"
 {
 	shader "sphere_shadow.glsl.shader";
 };
+method "shadow_thsm"
+{
+	shader "sphere_shadow_thsm.glsl.shader";
+};
diff --git a/demos/desertpillars/data/exported/Wisp.light b/demos/desertpillars/data/exported/Wisp.light
new file mode 100644
index 00000000..a2964c64
--- /dev/null
+++ b/demos/desertpillars/data/exported/Wisp.light
@@ -0,0 +1,4 @@
+type point;
+position 0.0409660 -1.87497 3.35741;
+attenuation 1.00000 0.00000 1.00000;
+color 10.0000 10.0000 10.0000;
diff --git a/demos/desertpillars/data/exported/flare.png.tex b/demos/desertpillars/data/exported/flare.png.tex
new file mode 100644
index 00000000..58018fc7
--- /dev/null
+++ b/demos/desertpillars/data/exported/flare.png.tex
@@ -0,0 +1,3 @@
+type \2d;
+generate_mipmap true;
+external_image_srgb "flare.png";
diff --git a/demos/desertpillars/data/flare.glsl b/demos/desertpillars/data/flare.glsl
new file mode 100644
index 00000000..dd287581
--- /dev/null
+++ b/demos/desertpillars/data/flare.glsl
@@ -0,0 +1,12 @@
+import billboard;
+
+uniform Flare
+{
+	int flare_light_index;
+};
+
+#pragma MSP stage(fragment)
+vec4 get_color() override
+{
+	return texture(color_tex, texcoord.xy)*vec4(light_sources[flare_light_index].color, 1.0);
+}
diff --git a/demos/desertpillars/data/flare.png b/demos/desertpillars/data/flare.png
new file mode 100644
index 00000000..aadc9f24
Binary files /dev/null and b/demos/desertpillars/data/flare.png differ
diff --git a/demos/desertpillars/data/sphere.shader b/demos/desertpillars/data/sphere.shader
index d203cd1b..48fd74ae 100644
--- a/demos/desertpillars/data/sphere.shader
+++ b/demos/desertpillars/data/sphere.shader
@@ -1,4 +1,5 @@
 module "sphere.glsl"
 {
 	specialize "use_image_based_lighting" true;
+	specialize "use_shadow_map" true;
 };
diff --git a/demos/desertpillars/data/sphere_shadow_thsm.glsl b/demos/desertpillars/data/sphere_shadow_thsm.glsl
new file mode 100644
index 00000000..1a401736
--- /dev/null
+++ b/demos/desertpillars/data/sphere_shadow_thsm.glsl
@@ -0,0 +1,2 @@
+import occluder_thsm;
+import sphere_morph;
diff --git a/demos/desertpillars/scene.blend b/demos/desertpillars/scene.blend
index 2a73dd58..e452b8b7 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 513d8174..432c9166 100644
--- a/demos/desertpillars/source/desertpillars.cpp
+++ b/demos/desertpillars/source/desertpillars.cpp
@@ -1,6 +1,8 @@
 #include <msp/fs/dir.h>
 #include <msp/gl/directionallight.h>
+#include <msp/gl/lighting.h>
 #include <msp/gl/sequencebuilder.h>
+#include <msp/gl/pointlight.h>
 #include <msp/gl/renderer.h>
 #include <msp/gl/tests.h>
 #include <msp/input/keys.h>
@@ -25,12 +27,15 @@ DesertPillars::DesertPillars(int, char **):
 	keyboard(window),
 	view(window, gl_ctx),
 	camera(resources.get<GL::Camera>("Camera.camera")),
+	lighting(resources.get<GL::Lighting>("Desert.lightn")),
 	sphere(resources.get<GL::Object>("Sphere.object")),
 	sphere_morph(0.0f),
 	sphere_frozen(false),
 	sphere_stopped(false),
 	sun(resources.get<GL::DirectionalLight>("Sun.light")),
 	sun_angle(Geometry::Angle<float>::from_turns(0.1f)),
+	wisp(resources.get<GL::PointLight>("Wisp.light")),
+	flare(resources.get<GL::Object>("Flare.object"), lighting.find_light_index(wisp)),
 	camera_stopped(false)
 {
 	window.set_title("Desert Pillars");
@@ -54,8 +59,16 @@ DesertPillars::DesertPillars(int, char **):
 	GL::Sequence::Step *step = &shadow_seq->add_step("shadow", content);
 	step->set_depth_test(GL::LEQUAL);
 
-	shadow_map = make_unique<GL::ShadowMap>(8192, *sky, sun, *shadow_seq);
+	shadow_seq_thsm = make_unique<GL::Sequence>();
+	shadow_seq_thsm->set_clear_enabled(true);
+	shadow_seq_thsm->set_debug_name("Shadow sequence");
+	step = &shadow_seq_thsm->add_step("shadow_thsm", content);
+	step->set_depth_test(GL::LEQUAL);
+
+	shadow_map = make_unique<GL::ShadowMap>(6144, 4096, *sky, lighting);
 	shadow_map->set_debug_name("Shadow map");
+	shadow_map->add_light(sun, 4096, *shadow_seq);
+	shadow_map->add_light(resources.get<GL::PointLight>("Wisp.light"), 2048, *shadow_seq_thsm);
 	shadow_map->set_target(GL::Vector3(0.0f, 0.0f, 0.0f), 20.0f);
 
 	GL::SequenceBuilder seq_bld(resources.get<GL::SequenceTemplate>("Desert.seq"));
@@ -64,7 +77,7 @@ DesertPillars::DesertPillars(int, char **):
 	sequence.reset(seq_bld.build(view));
 
 	step = &env_seq->add_step("", *shadow_map);
-	step->set_lighting(&resources.get<GL::Lighting>("Desert.lightn"));
+	step->set_lighting(&lighting);
 	step->set_depth_test(GL::LEQUAL);
 
 	env_map = make_unique<GL::EnvironmentMap>(256, GL::RGB16F, 7, sphere, *env_seq);
@@ -73,6 +86,7 @@ DesertPillars::DesertPillars(int, char **):
 
 	content.add(resources.get<GL::Scene>("Background.scene"));
 	content.add(*env_map);
+	content.add(flare);
 
 	camera.set_debug_name("Main camera");
 
@@ -83,6 +97,8 @@ DesertPillars::DesertPillars(int, char **):
 	sun_node = normalize(GL::Vector3(sun_direction.y, -sun_direction.x, 0.0f));
 	sun_axis = normalize(cross(sun_direction, sun_node));
 
+	wisp_base_color = wisp.get_color();
+
 	const GL::Vector3 &cam_pos = camera.get_position();
 	camera_distance = cam_pos.norm();
 	camera_angle = Geometry::atan2(cam_pos.y, cam_pos.x);
@@ -126,6 +142,14 @@ void DesertPillars::tick()
 	sun_angle += Geometry::Angle<float>::from_degrees(4*dt/Time::sec);
 	sun.set_direction(GL::Matrix::rotation(sun_angle, sun_axis)*-sun_node);
 
+	wisp_angle += Geometry::Angle<float>::from_degrees(6*dt/Time::sec);
+	float r = 3.1f+1.1f*cos(4.0f*wisp_angle);
+	GL::Vector3 p(cos(wisp_angle)*r, sin(wisp_angle)*r, 3.6f+0.4f*sin(1.6f*wisp_angle));
+	wisp.set_position(p);
+	float twilight = 0.8f-min(max(sin(sun_angle), -0.05f), 0.2f)*4.0f;
+	wisp.set_color(wisp_base_color*((3.0f-2.0f*twilight)*twilight*twilight));
+	flare.set_matrix(GL::Matrix::translation(p));
+
 	display.tick();
 	view.render();
 }
@@ -163,3 +187,16 @@ void DesertPillars::MorphSphere::setup_render(GL::Renderer &renderer, GL::Tag ta
 	ObjectInstance::setup_render(renderer, tag);
 	renderer.add_shader_data(shdata);
 }
+
+
+DesertPillars::LightFlare::LightFlare(const GL::Object &o, unsigned i):
+	ObjectInstance(o)
+{
+	shdata.uniform("flare_light_index", static_cast<int>(i));
+}
+
+void DesertPillars::LightFlare::setup_render(GL::Renderer &renderer, GL::Tag tag) const
+{
+	ObjectInstance::setup_render(renderer, tag);
+	renderer.add_shader_data(shdata);
+}
diff --git a/demos/desertpillars/source/desertpillars.h b/demos/desertpillars/source/desertpillars.h
index 41707381..18522a57 100644
--- a/demos/desertpillars/source/desertpillars.h
+++ b/demos/desertpillars/source/desertpillars.h
@@ -54,6 +54,17 @@ private:
 		virtual void setup_render(Msp::GL::Renderer &, Msp::GL::Tag) const;
 	};
 
+	class LightFlare: public Msp::GL::ObjectInstance
+	{
+	private:
+		Msp::GL::ProgramData shdata;
+
+	public:
+		LightFlare(const Msp::GL::Object &, unsigned);
+
+		virtual void setup_render(Msp::GL::Renderer &, Msp::GL::Tag) const;
+	};
+
 	Msp::Graphics::Display display;
 	Options opts;
 	Msp::Graphics::Window window;
@@ -64,9 +75,11 @@ private:
 	Msp::GL::WindowView view;
 	std::unique_ptr<Msp::GL::Sequence> sequence;
 	Msp::GL::Camera camera;
+	const Msp::GL::Lighting &lighting;
 
 	std::unique_ptr<Msp::GL::Sky> sky;
 	std::unique_ptr<Msp::GL::Sequence> shadow_seq;
+	std::unique_ptr<Msp::GL::Sequence> shadow_seq_thsm;
 	std::unique_ptr<Msp::GL::ShadowMap> shadow_map;
 	std::unique_ptr<Msp::GL::Sequence> env_seq;
 	std::unique_ptr<Msp::GL::EnvironmentMap> env_map;
@@ -83,6 +96,11 @@ private:
 	Msp::GL::Vector3 sun_axis;
 	Msp::Geometry::Angle<float> sun_angle;
 
+	Msp::GL::PointLight &wisp;
+	Msp::GL::Color wisp_base_color;
+	Msp::Geometry::Angle<float> wisp_angle;
+	LightFlare flare;
+
 	float camera_distance;
 	Msp::Geometry::Angle<float> camera_base_height;
 	Msp::Geometry::Angle<float> camera_angle;