9 files changed, 204 insertions, 0 deletions
diff --git a/advanced_lighting/6.hdr/shaders/blinn.frag b/advanced_lighting/6.hdr/shaders/blinn.frag
new file mode 100644
index 0000000..5dca1f7
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/blinn.frag
@@ -0,0 +1,54 @@
+#version 330 core
+
+in VS_OUT {
+	vec3		fpos;
+	vec3		fn;
+	vec2		texc;
+} fsin;
+
+out vec4		fcolor;
+
+uniform sampler2D	diftex;
+
+const int		lmax = 30;
+
+uniform int		lcount;
+uniform	vec3		lpos[lmax];
+uniform vec3		vpos;
+
+void main(void)
+{
+	vec3	l, v, n, difcolor, lcolor, ambient, halfdir, result;
+	float	diff, spec, specf, dist, attenuation;
+	int	i;
+
+	n = normalize(fsin.fn);
+	v = normalize(vpos-fsin.fpos);
+
+	ambient = vec3(0.001);
+
+	difcolor = vec3(texture(diftex, fsin.texc));
+
+	/* lcolor = vec3(0.3, 0.0, 0.1); */
+	lcolor = vec3(1.0);
+
+	specf = 0.2;
+
+	result = vec3(0.0);
+
+	for (i = 0; i < lcount; i++) {
+		l = normalize(lpos[i]-fsin.fpos);
+		halfdir = normalize(l+v);
+
+		diff = max(dot(n, l), 0.0);
+
+		spec = pow(max(dot(n, halfdir), 0.0), 16.0)*specf;
+
+		dist = length(lpos[i]-fsin.fpos);
+		attenuation = 1.0/dist;
+
+		result += (diff+spec)*difcolor*lcolor*attenuation;
+	}
+
+	fcolor = vec4(ambient+result, 1.0);
+}
diff --git a/advanced_lighting/6.hdr/shaders/blinn.vert b/advanced_lighting/6.hdr/shaders/blinn.vert
new file mode 100644
index 0000000..f08f38e
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/blinn.vert
@@ -0,0 +1,34 @@
+#version 330 core
+layout(location = 0) in vec3 apos;
+layout(location = 1) in vec3 anormal;
+layout(location = 2) in vec2 atexc;
+
+out VS_OUT {
+	vec3	fpos;
+	vec3	fn;
+	vec2	texc;
+} vsout;
+
+uniform mat4	proj;
+uniform mat4	view;
+uniform mat4	model;
+
+uniform bool	invert_normals;
+
+void main(void)
+{
+	mat3	normtransf;
+
+	vsout.fpos = vec3(model*vec4(apos, 1.0));
+
+	normtransf = mat3(transpose(inverse(model)));
+
+	if (invert_normals)
+		vsout.fn = normtransf*(-anormal);
+	else
+		vsout.fn = normtransf*anormal;
+
+	vsout.texc = atexc;
+
+	gl_Position = proj*view*model*vec4(apos, 1.0);
+}
diff --git a/advanced_lighting/6.hdr/shaders/hdr.frag b/advanced_lighting/6.hdr/shaders/hdr.frag
new file mode 100644
index 0000000..f12c6a8
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/hdr.frag
@@ -0,0 +1,29 @@
+#version 330 core
+
+in VSOUT {
+	vec2		texc;
+} vsout;
+
+out vec4		fcolor;
+
+uniform sampler2D	hdrbuf;
+uniform float		exposure;
+
+void main(void)
+{
+	const float	gamma = 2.2;
+
+	vec3		hdrcolor, mapped;
+
+	hdrcolor = vec3(texture(hdrbuf, vsout.texc));
+
+	/* NOTE(pryazha): Reinhard tone mapping */
+	/* mapped = hdrcolor/(hdrcolor+vec3(1.0)); */
+
+	/* NOTE(pryazha): Tone mapping with exposure (i guess) */
+	mapped = vec3(1.0)-exp(-hdrcolor*exposure);
+
+	mapped = pow(mapped, vec3(1.0/gamma));
+
+	fcolor = vec4(mapped, 1.0);
+}
diff --git a/advanced_lighting/6.hdr/shaders/hdr.vert b/advanced_lighting/6.hdr/shaders/hdr.vert
new file mode 100644
index 0000000..4f15c72
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/hdr.vert
@@ -0,0 +1,14 @@
+#version 330 core
+layout(location = 0) in vec3 apos;
+layout(location = 2) in vec2 atexc;
+
+out VSOUT {
+	vec2	texc;
+} vsout;
+
+void main(void)
+{
+	vsout.texc = atexc;
+
+	gl_Position = vec4(apos, 1.0);
+}
diff --git a/advanced_lighting/6.hdr/shaders/light.frag b/advanced_lighting/6.hdr/shaders/light.frag
new file mode 100644
index 0000000..3829c91
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/light.frag
@@ -0,0 +1,8 @@
+#version 330 core
+
+out vec4 fcolor;
+
+void main(void)
+{
+	fcolor = vec4(1.0);
+}
diff --git a/advanced_lighting/6.hdr/shaders/light.vert b/advanced_lighting/6.hdr/shaders/light.vert
new file mode 100644
index 0000000..a24ade5
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/light.vert
@@ -0,0 +1,11 @@
+#version 330 core
+layout(location = 0) in vec3 apos;
+
+uniform mat4 proj;
+uniform mat4 view;
+uniform mat4 model;
+
+void main(void)
+{
+	gl_Position = proj*view*model*vec4(apos, 1.0);
+}
diff --git a/advanced_lighting/6.hdr/shaders/normals_debug.frag b/advanced_lighting/6.hdr/shaders/normals_debug.frag
new file mode 100644
index 0000000..32e36a7
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/normals_debug.frag
@@ -0,0 +1,10 @@
+#version 330 core
+
+in vec3 vcolor;
+
+out vec4 frag_color;
+
+void main(void)
+{
+	frag_color = vec4(vcolor, 1.0);
+}
diff --git a/advanced_lighting/6.hdr/shaders/normals_debug.geom b/advanced_lighting/6.hdr/shaders/normals_debug.geom
new file mode 100644
index 0000000..bdbc1b3
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/normals_debug.geom
@@ -0,0 +1,28 @@
+#version 330 core
+layout(triangles) in;
+layout(line_strip, max_vertices=6) out;
+
+in VS_OUT {
+	vec4 normal;
+} gs_in[];
+
+out vec3 vcolor;
+
+uniform mat4 proj;
+
+void gen_normals(int index)
+{
+	vcolor = vec3(0.0, 1.0, 0.0);
+	gl_Position = proj*(gl_in[index].gl_Position);
+	EmitVertex();
+	gl_Position = proj*(gl_in[index].gl_Position+0.5*gs_in[index].normal);
+	EmitVertex();
+	EndPrimitive();
+}
+
+void main(void)
+{
+	gen_normals(0);
+	gen_normals(1);
+	gen_normals(2);
+}
diff --git a/advanced_lighting/6.hdr/shaders/normals_debug.vert b/advanced_lighting/6.hdr/shaders/normals_debug.vert
new file mode 100644
index 0000000..2d3a4b5
--- /dev/null
+++ b/advanced_lighting/6.hdr/shaders/normals_debug.vert
@@ -0,0 +1,16 @@
+#version 330 core
+layout(location = 0) in vec3 apos;
+layout(location = 1) in vec3 anormal;
+
+out VS_OUT {
+	vec4 normal;
+} vs_out;
+
+uniform mat4 view;
+uniform mat4 model;
+
+void main(void)
+{
+	vs_out.normal = view*model*vec4(normalize(anormal), 0.0);
+	gl_Position = view*model*vec4(apos, 1.0);
+}