From e3e5a247c58c6e0b45d81ab61314bd8d1bd530ac Mon Sep 17 00:00:00 2001
From: Kelly Rauchenberger <fefferburbia@gmail.com>
Date: Thu, 19 Feb 2015 22:54:40 -0500
Subject: Added ability to resize window (full screen is really laggy though!)

---
 shaders/bloom1.fragment |  3 ++-
 shaders/bloom2.fragment |  3 ++-
 shaders/final.fragment  | 14 +++++---------
 3 files changed, 9 insertions(+), 11 deletions(-)

(limited to 'shaders')

diff --git a/shaders/bloom1.fragment b/shaders/bloom1.fragment
index 4940933..cfb2799 100644
--- a/shaders/bloom1.fragment
+++ b/shaders/bloom1.fragment
@@ -6,6 +6,7 @@ out vec3 color;
 
 uniform sampler2D screenTex;
 uniform float iGlobalTime;
+uniform vec2 resolution;
 
 float nrand(vec2 n)
 {
@@ -45,7 +46,7 @@ void main()
     vec2 ofs = fTaps_Poisson[i];
     ofs = vec2(dot(ofs, basis.xz), dot(ofs, basis.yw));
     
-    vec2 texcoord = UV + max_siz * ofs / vec2(1024.0,768.0);
+    vec2 texcoord = UV + max_siz * ofs / resolution;
     sum += texture(screenTex, texcoord, -10.0);
   }
   
diff --git a/shaders/bloom2.fragment b/shaders/bloom2.fragment
index aa69f0f..1d9cac4 100644
--- a/shaders/bloom2.fragment
+++ b/shaders/bloom2.fragment
@@ -7,6 +7,7 @@ out vec3 color;
 uniform sampler2D screenTex;
 uniform sampler2D downsampledTex;
 uniform float iGlobalTime;
+uniform vec2 resolution;
 
 float nrand(vec2 n)
 {
@@ -46,7 +47,7 @@ void main()
     vec2 ofs = fTaps_Poisson[i];
     ofs = vec2(dot(ofs, basis.xz), dot(ofs, basis.yw));
     
-    vec2 texcoord = UV + max_siz * ofs / vec2(64.0,48.0);
+    vec2 texcoord = UV + max_siz * ofs / (resolution / vec2(16.0));
     sum += texture(downsampledTex, texcoord, -10.0);
   }
   
diff --git a/shaders/final.fragment b/shaders/final.fragment
index 7eeb78e..4a51ad3 100644
--- a/shaders/final.fragment
+++ b/shaders/final.fragment
@@ -11,10 +11,6 @@ out vec3 color;
 uniform sampler2D rendertex;
 uniform sampler2D scanlinestex;
 
-const vec2 UVScalar = vec2(1.0, 1.0);
-const vec2 UVOffset = vec2(0.0, 0.0);
-const vec2 CRTMask_Scale = vec2(85.0, 153.6)*4.0;
-const vec2 CRTMask_Offset = vec2(0.0, 0.0);
 const float Tuning_Overscan = 1.08;
 const float Tuning_Dimming = 0.0;
 const float Tuning_Satur = 1.0;
@@ -27,18 +23,18 @@ const float Tuning_Spec_Brightness = 0.35;
 const float Tuning_Spec_Power = 50.0;
 const float Tuning_Fres_Brightness = 1.0;
 
+uniform vec2 resolution;
+
 vec4 sampleCRT(vec2 uv)
 {
-  vec2 ScaledUV = uv;
-  ScaledUV *= UVScalar;
-  ScaledUV += UVOffset;
+  vec2 CRTMask_Scale = resolution / vec2(6.0, 5.0);
   
-  vec2 scanuv = ScaledUV * CRTMask_Scale;
+  vec2 scanuv = uv * CRTMask_Scale;
   vec3 scantex = texture(scanlinestex, scanuv).rgb;
   scantex += Tuning_Scanline_Brightness;
   scantex = mix(vec3(1,1,1), scantex, Tuning_Scanline_Opacity);
   
-  vec2 overscanuv = (ScaledUV * Tuning_Overscan) - ((Tuning_Overscan - 1.0f) * 0.5f);
+  vec2 overscanuv = (uv * Tuning_Overscan) - ((Tuning_Overscan - 1.0f) * 0.5f);
   overscanuv = overscanuv - vec2(0.5, 0.5);
   float rsq = (overscanuv.x*overscanuv.x) + (overscanuv.y*overscanuv.y);
   overscanuv = overscanuv + (overscanuv * (Tuning_Barrel * rsq)) + vec2(0.5,0.5);
-- 
cgit 1.4.1