4 files changed, 133 insertions, 33 deletions
diff --git a/res/sdr/mdl_foliage.vs b/res/sdr/mdl_foliage.vs
new file mode 100644
index 0000000..db9d7b6
--- /dev/null
+++ b/res/sdr/mdl_foliage.vs
@@ -0,0 +1,43 @@
+#version 330
+
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+uniform mat4 mvp;
+uniform mat4 matNormal;
+
+uniform vec3 sun_direction;
+uniform vec3 sun_colour;
+uniform float sun_intensity;
+
+uniform vec3 moon_direction;
+uniform vec3 moon_colour;
+uniform float moon_intensity;
+
+uniform vec3 ambient_colour;
+uniform float ambient_intensity;
+
+uniform vec2 uv_tiling;
+uniform vec2 uv_offset;
+
+out vec2 frag_texcoord;
+out vec4 frag_colour;
+out vec3 frag_lighting;
+
+void main() {
+	vec3 world_normal = normalize((matNormal * vec4(vertexNormal, 0.0)).xyz);
+	float sun_diffuse = abs(dot(world_normal, sun_direction));
+	float moon_diffuse = abs(dot(world_normal, moon_direction));
+
+	vec3 ambient_light = ambient_colour * ambient_intensity;
+	vec3 sun_light = sun_colour * sun_intensity * sun_diffuse;
+	vec3 moon_light = moon_colour * moon_intensity * moon_diffuse;
+
+	frag_lighting = ambient_light + sun_light + moon_light;
+	frag_texcoord = vertexTexCoord * uv_tiling + uv_offset;
+	frag_colour = vertexColor;
+
+	gl_Position = mvp * vec4(vertexPosition, 1.0);
+}
diff --git a/res/sdr/mdl_two_sided_cutoff.fs b/res/sdr/mdl_two_sided_cutoff.fs
new file mode 100644
index 0000000..c4ac07e
--- /dev/null
+++ b/res/sdr/mdl_two_sided_cutoff.fs
@@ -0,0 +1,51 @@
+#version 330
+
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+uniform vec3 sun_direction;
+uniform vec3 sun_colour;
+uniform float sun_intensity;
+
+uniform vec3 moon_direction;
+uniform vec3 moon_colour;
+uniform float moon_intensity;
+
+uniform vec3 ambient_colour;
+uniform float ambient_intensity;
+
+in vec2 frag_texcoord;
+in vec4 frag_colour;
+in vec3 frag_normal;
+
+out vec4 finalColor;
+
+void main() {
+	vec4 texel = texture(texture0, frag_texcoord) * frag_colour;
+
+	if (texel.a < 0.5) {
+		discard;
+	}
+
+	texel.rgb += colDiffuse.rgb;
+
+	vec3 normal = normalize(frag_normal);
+
+	if (!gl_FrontFacing) {
+		normal = -normal;
+	}
+
+	float sun_diffuse = max(dot(normal, sun_direction), 0.0);
+	float moon_diffuse = max(dot(normal, moon_direction), 0.0);
+
+	vec3 ambient_light = ambient_colour * ambient_intensity;
+	vec3 sun_light = sun_colour * sun_intensity * sun_diffuse;
+	vec3 moon_light = moon_colour * moon_intensity * moon_diffuse;
+
+	vec3 lighting = max(
+		ambient_light + sun_light + moon_light,
+		vec3(0.0)
+	);
+
+	finalColor = vec4(texel.rgb * lighting, 1.0);
+}
diff --git a/res/sdr/mdl_vtx_lit.vs b/res/sdr/mdl_vtx_lit.vs
index c69cb3d..d9b2bce 100644
--- a/res/sdr/mdl_vtx_lit.vs
+++ b/res/sdr/mdl_vtx_lit.vs
@@ -19,46 +19,27 @@ uniform float moon_intensity;
 uniform vec3 ambient_colour;
 uniform float ambient_intensity;
 
+uniform vec2 uv_tiling;
+uniform vec2 uv_offset;
+
 out vec2 frag_texcoord;
 out vec4 frag_colour;
 out vec3 frag_lighting;
+out vec3 frag_normal;
 
-void
-main() {
-	vec3 world_normal = normalize(
-		(matNormal * vec4(vertexNormal, 0.0)).xyz
-	);
-
-	float sun_diffuse = max(
-		dot(world_normal, sun_direction),
-		0.0
-	);
-
-	float moon_diffuse = max(
-		dot(world_normal, moon_direction),
-		0.0
-	);
-
-	vec3 ambient_light =
-		ambient_colour * ambient_intensity;
-
-	vec3 sun_light =
-		sun_colour *
-		sun_intensity *
-		sun_diffuse;
-
-	vec3 moon_light =
-		moon_colour *
-		moon_intensity *
-		moon_diffuse;
+void main() {
+	vec3 world_normal = normalize((matNormal * vec4(vertexNormal, 0.0)).xyz);
+	float sun_diffuse = max(dot(world_normal, sun_direction), 0.0);
+	float moon_diffuse = max(dot(world_normal, moon_direction), 0.0);
 
-	frag_lighting =
-		ambient_light +
-		sun_light +
-		moon_light;
+	vec3 ambient_light = ambient_colour * ambient_intensity;
+	vec3 sun_light = sun_colour * sun_intensity * sun_diffuse;
+	vec3 moon_light = moon_colour * moon_intensity * moon_diffuse;
 
-	frag_texcoord = vertexTexCoord;
+	frag_lighting = ambient_light + sun_light + moon_light;
+	frag_texcoord = vertexTexCoord * uv_tiling + uv_offset;
 	frag_colour = vertexColor;
+	frag_normal = world_normal;
 
 	gl_Position = mvp * vec4(vertexPosition, 1.0);
 }
diff --git a/res/sdr/mdl_vtx_lit_cutoff.fs b/res/sdr/mdl_vtx_lit_cutoff.fs
new file mode 100644
index 0000000..79b3ce2
--- /dev/null
+++ b/res/sdr/mdl_vtx_lit_cutoff.fs
@@ -0,0 +1,25 @@
+#version 330
+
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+in vec2 frag_texcoord;
+in vec4 frag_colour;
+in vec3 frag_lighting;
+
+out vec4 finalColor;
+
+void
+main() {
+	vec4 texel = texture(texture0, frag_texcoord) * frag_colour;
+
+	if (texel.a < 0.5) {
+		discard;
+	}
+
+	texel.rgb += colDiffuse.rgb;
+
+	vec3 lighting = max(frag_lighting, vec3(0.0));
+
+	finalColor = vec4(texel.rgb * lighting, 1.0);
+}