From 7b408140225eb001ce31df3449de2abed91bfce3 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <josh.holtrop@gentex.com>
Date: Sun, 24 Nov 2013 22:05:32 -0500
Subject: [PATCH] use displayinfo to determine size

---
 src/gss.d | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/src/gss.d b/src/gss.d
index 027c3bb..fe89631 100644
--- a/src/gss.d
+++ b/src/gss.d
@@ -5,25 +5,23 @@ import glamour.vao;
 import glamour.shader;
 import glamour.vbo;
 import gl3n.linalg;
-static import logoobj;
 static import logo;
 
-enum int WIDTH = 600;
-enum int HEIGHT = 450;
+extern(C) void GetDisplaySize(int * width, int * height, int * num_monitors);
 
+int width;
+int height;
 GLint position_idx;
 GLint view_idx;
 GLint color_idx;
 mat4 view_matrix;
 Shader program;
-Shader program2;
 
 void init()
 {
     logo.init();
-//    glClearColor (1.0, 0.7, 0.0, 0.0);
     glClearColor (0.0, 0.0, 0.0, 0.0);
-    glViewport(0, 0, WIDTH, HEIGHT);
+    glViewport(0, 0, width, height);
     immutable string shader_src = `
 vertex:
     uniform mat4 view;
@@ -51,8 +49,7 @@ void display(SDL_Window * window)
     glClear(GL_COLOR_BUFFER_BIT);
 
     view_matrix.make_identity();
-//    view_matrix.rotatez(SDL_GetTicks() / 500.0);
-    view_matrix.scale(HEIGHT / cast(float)WIDTH, 1.0, 1.0);
+    view_matrix.scale(height / cast(float)width, 1.0, 1.0);
     view_matrix.scale(0.25, 0.25, 0.25);
 
     program.bind();
@@ -89,6 +86,10 @@ void display(SDL_Window * window)
 
 int main()
 {
+    GetDisplaySize(&width, &height, null);
+    if (width > 1920 * 2)
+        width = 1920 * 2;   /* restrict to two monitors */
+
     DerelictSDL2.load();
 
     DerelictGL3.load();
@@ -105,10 +106,9 @@ int main()
     SDL_Window * window = SDL_CreateWindow("Gentex ScreenSaver",
                                            SDL_WINDOWPOS_UNDEFINED,
                                            SDL_WINDOWPOS_UNDEFINED,
-                                           WIDTH,
-                                           HEIGHT,
-//                                           SDL_WINDOW_OPENGL | SDL_WINDOW_BORDERLESS);
-                                           SDL_WINDOW_OPENGL);
+                                           width,
+                                           height,
+                                           SDL_WINDOW_OPENGL | SDL_WINDOW_BORDERLESS);
 
     SDL_GLContext context = SDL_GL_CreateContext(window);