♻️ Pull out shader source code to text files

shaders/pumpkin-frag.glsl

@@ -0,0 +1,27 @@
+#define lowp
+#define mediump
+#define highp
+#line 0
+uniform lowp sampler2D uni_texture;
+uniform lowp vec3 uni_albedo;
+uniform lowp vec3 uni_object_space_light;
+uniform lowp vec3 uni_min_bright;
+uniform lowp vec3 uni_min_albedo;
+
+//varying lowp vec4 vary_color;
+varying lowp vec3 vary_normal;
+varying mediump vec2 vary_uv;
+
+void main (void) {
+	lowp vec3 normal = normalize (vary_normal);
+	
+	lowp vec3 albedo = uni_albedo * max (uni_min_albedo, texture2D (uni_texture, vary_uv).rgb);
+	//lowp vec3 albedo = vec3 (vary_uv, 0.0);
+	
+	lowp float diffuse_factor = dot (normal, uni_object_space_light);
+	lowp vec3 sun = max (diffuse_factor, 0.0) * vec3 (0.95, 0.9, 0.85);
+	lowp vec3 sky = (diffuse_factor * 0.45 + 0.55) * vec3 (0.05, 0.1, 0.15);
+	lowp vec3 diffuse_color = albedo * max (uni_min_bright, (sun + sky));
+	
+	gl_FragColor = vec4 (sqrt (diffuse_color), 1.0);
+}

shaders/pumpkin-vert.glsl

@@ -0,0 +1,22 @@
+#define lowp
+#define mediump
+#define highp
+#line 0
+uniform highp mat4 uni_mvp;
+
+attribute highp vec4 attr_pos;
+attribute mediump vec2 attr_uv;
+attribute lowp vec3 attr_normal;
+
+varying mediump vec2 vary_uv;
+varying lowp vec3 vary_normal;
+
+void main (void) {
+	vary_uv = attr_uv;
+	
+	lowp vec4 light_color = vec4 (1.0);
+	
+	vary_normal = attr_normal;
+	
+	gl_Position = uni_mvp * attr_pos;
+}

src/bin/pumpkin.rs

@@ -26,62 +26,6 @@ where V: Into <Vec3>
 	))
 }
 
-const VERT_SHADER_SRC: &str = 
-"
-#define lowp
-#define mediump
-#define highp
-#line 0
-uniform highp mat4 uni_mvp;
-
-attribute highp vec4 attr_pos;
-attribute mediump vec2 attr_uv;
-attribute lowp vec3 attr_normal;
-
-varying mediump vec2 vary_uv;
-varying lowp vec3 vary_normal;
-
-void main (void) {
-	vary_uv = attr_uv;
-	
-	lowp vec4 light_color = vec4 (1.0);
-	
-	vary_normal = attr_normal;
-	
-	gl_Position = uni_mvp * attr_pos;
-}";
-
-const FRAG_SHADER_SRC: &str = 
-"
-#define lowp
-#define mediump
-#define highp
-#line 0
-uniform lowp sampler2D uni_texture;
-uniform lowp vec3 uni_albedo;
-uniform lowp vec3 uni_object_space_light;
-uniform lowp vec3 uni_min_bright;
-uniform lowp vec3 uni_min_albedo;
-
-//varying lowp vec4 vary_color;
-varying lowp vec3 vary_normal;
-varying mediump vec2 vary_uv;
-
-void main (void) {
-	lowp vec3 normal = normalize (vary_normal);
-	
-	lowp vec3 albedo = uni_albedo * max (uni_min_albedo, texture2D (uni_texture, vary_uv).rgb);
-	//lowp vec3 albedo = vec3 (vary_uv, 0.0);
-	
-	lowp float diffuse_factor = dot (normal, uni_object_space_light);
-	lowp vec3 sun = max (diffuse_factor, 0.0) * vec3 (0.95, 0.9, 0.85);
-	lowp vec3 sky = (diffuse_factor * 0.45 + 0.55) * vec3 (0.05, 0.1, 0.15);
-	lowp vec3 diffuse_color = albedo * max (uni_min_bright, (sun + sky));
-	
-	gl_FragColor = vec4 (sqrt (diffuse_color), 1.0);
-}
-";
-
 const KEY_LEFT: usize = 0;
 const KEY_RIGHT: usize = KEY_LEFT + 1;
 const KEY_UP: usize = KEY_RIGHT + 1;
@@ -183,8 +127,8 @@ fn main () {
 	// And I'm still not actually checking errors - Just checkmarking
 	// that I know where they are.
 	
-	let vert_shader = ShaderObject::new (gl::VERTEX_SHADER, VERT_SHADER_SRC).unwrap ();
-	let frag_shader = ShaderObject::new (gl::FRAGMENT_SHADER, FRAG_SHADER_SRC).unwrap ();
+	let vert_shader = ShaderObject::from_file (gl::VERTEX_SHADER, "shaders/pumpkin-vert.glsl").unwrap ();
+	let frag_shader = ShaderObject::from_file (gl::FRAGMENT_SHADER, "shaders/pumpkin-frag.glsl").unwrap ();
 	
 	let shader_program = ShaderProgram::new (&vert_shader, &frag_shader).unwrap ();
 	

src/shader.rs

@@ -11,7 +11,8 @@ impl ShaderObject {
 		self.id
 	}
 	
-	pub fn new (shader_type: u32, source: &str) -> Result <ShaderObject, String>
+	pub fn from_source (shader_type: u32, source: &[u8])
+	-> Result <ShaderObject, String>
 	{
 		let id = unsafe {
 			gl::CreateShader (shader_type)
@@ -54,6 +55,14 @@ impl ShaderObject {
 			Err (info)
 		}
 	}
+	
+	pub fn from_file <P> (shader_type: u32, filename: P)
+	-> Result <ShaderObject, String>
+	where P: AsRef <std::path::Path>
+	{
+		let src = crate::file::load_small_file (filename, 1024 * 1024);
+		Self::from_source (shader_type, &src)
+	}
 }
 
 impl Drop for ShaderObject {