From 45391f3ccaa74be2be93e4b31507f45939afa4b0 Mon Sep 17 00:00:00 2001
From: Bernie Innocenti <bernie@codewiz.org>
Date: Sat, 8 Jul 2017 12:09:00 -0400
Subject: [PATCH] Move text rendering shaders out of line.

---
 release.sh        |  4 +++
 shaders/text.frag | 11 ++++++++
 shaders/text.vert | 20 +++++++++++++++
 text.rs           | 65 ++++++++++++-----------------------------------
 4 files changed, 51 insertions(+), 49 deletions(-)
 create mode 100755 release.sh
 create mode 100644 shaders/text.frag
 create mode 100644 shaders/text.vert

diff --git a/release.sh b/release.sh
new file mode 100755
index 0000000..c2a5883
--- /dev/null
+++ b/release.sh
@@ -0,0 +1,4 @@
+set -e
+cargo build --release --no-default-features
+strip target/release/mandelwow
+upx -9 target/release/mandelwow
diff --git a/shaders/text.frag b/shaders/text.frag
new file mode 100644
index 0000000..ab43bfe
--- /dev/null
+++ b/shaders/text.frag
@@ -0,0 +1,11 @@
+#version 140
+uniform sampler2D tex;
+uniform vec4 bgcolor;
+uniform vec4 fgcolor;
+
+in vec2 v_tex_coords;
+out vec4 f_color;
+
+void main() {
+    f_color = texture(tex, v_tex_coords).x == 0U ? bgcolor : fgcolor;
+}
diff --git a/shaders/text.vert b/shaders/text.vert
new file mode 100644
index 0000000..e3544f7
--- /dev/null
+++ b/shaders/text.vert
@@ -0,0 +1,20 @@
+#version 140
+
+uniform mat4 model;
+uniform mat4 perspview;
+uniform int index;
+
+in vec2 position;
+in vec2 tex_coords;
+
+out vec2 v_tex_coords;
+out ivec4 v_fgcolor;
+
+void main() {
+    gl_Position = perspview * model * vec4(position, 0.0, 1.0);
+
+    // Characters are arranged in a 16x16 square.
+    int xpos = index % 16;
+    int ypos = index / 16;
+    v_tex_coords = (tex_coords + vec2(xpos, ypos)) / 16.;
+}
diff --git a/text.rs b/text.rs
index 14b2633..d1dc7c6 100644
--- a/text.rs
+++ b/text.rs
@@ -1,7 +1,7 @@
 use cgmath::conv::array4x4;
 use cgmath::{Matrix4, Vector3};
 use glium;
-use glium::{Surface, texture};
+use glium::{Display, Program, Surface, texture};
 use std;
 
 fn gamma<T>(x: T) -> f32
@@ -23,20 +23,28 @@ where
 #[cfg(feature = "image")]
 fn c64_font() -> (u32, u32, Vec<u8>) {
     use image;
-    let image =
-        image::load_from_memory_with_format(&include_bytes!("c64-font.png")[..], image::PNG)
-            .unwrap()
-            .to_luma();
+    let image = image::load_from_memory_with_format(
+        &include_bytes!("textures/c64-font.png")[..],
+        image::PNG,
+    ).unwrap()
+        .to_luma();
     let (w, h) = image.dimensions();
     (w, h, image.into_raw())
 }
 
 #[cfg(not(feature = "image"))]
 fn c64_font() -> (u32, u32, Vec<u8>) {
-    let pixels = &include_bytes!("c64-font.gray")[..];
+    let pixels = &include_bytes!("textures/c64-font.gray")[..];
     (128, 128, Vec::from(pixels))
 }
 
+pub fn text_program(display: &Display) -> Program {
+    //load_program(display, "shaders/text.vert", "shaders/text.frag");
+    let vertex_shader_src = include_str!("shaders/text.vert");
+    let fragment_shader_src = include_str!("shaders/text.frag");
+    Program::from_source(display, vertex_shader_src, fragment_shader_src, None).unwrap()
+}
+
 #[derive(Copy, Clone)]
 struct Vertex {
     position: [f32; 2],
@@ -54,7 +62,7 @@ pub struct Text<'a> {
 }
 
 impl<'a> Text<'a> {
-    pub fn new(display: &glium::Display) -> Text {
+    pub fn new(display: &Display) -> Text {
         let (w, h, pixels) = c64_font();
         let image = glium::texture::RawImage2d {
             data: std::borrow::Cow::from(pixels),
@@ -100,47 +108,6 @@ impl<'a> Text<'a> {
             &[1 as u16, 2, 0, 3],
         ).unwrap();
 
-        // compiling shaders and linking them together
-        let program = program!(display,
-        140 => {
-            vertex: "
-                #version 140
-
-                uniform mat4 model;
-                uniform mat4 perspview;
-                uniform int index;
-
-                in vec2 position;
-                in vec2 tex_coords;
-
-                out vec2 v_tex_coords;
-                out ivec4 v_fgcolor;
-
-                void main() {
-                    gl_Position = perspview * model * vec4(position, 0.0, 1.0);
-
-                    // Characters are arranged in a 16x16 square.
-                    int xpos = index % 16;
-                    int ypos = index / 16;
-                    v_tex_coords = (tex_coords + vec2(xpos, ypos)) / 16.;
-                }
-            ",
-
-            fragment: "
-                #version 140
-                uniform sampler2D tex;
-                uniform vec4 bgcolor;
-                uniform vec4 fgcolor;
-
-                in vec2 v_tex_coords;
-                out vec4 f_color;
-
-                void main() {
-                    f_color = texture(tex, v_tex_coords).x == 0U ? bgcolor : fgcolor;
-                }
-            "
-        }).unwrap();
-
         let params = glium::DrawParameters {
             depth: glium::Depth {
                 test: glium::draw_parameters::DepthTest::IfLess,
@@ -156,7 +123,7 @@ impl<'a> Text<'a> {
             tex: tex,
             vertex_buffer: vertex_buffer,
             index_buffer: index_buffer,
-            program: program,
+            program: text_program(display),
             params: params,
         }
     }
-- 
2.25.1