From dbc620aa032493ec187bc9ca6014ef2091da30ca Mon Sep 17 00:00:00 2001
From: Evan Pratten <ewpratten@gmail.com>
Date: Sun, 25 Apr 2021 18:15:45 -0400
Subject: [PATCH] Big fancy shaders

---
 assets/shaders/pixel.fs |  4 ++--
 src/logic/ingame/mod.rs | 32 +++++++++++++++++++++++++++++---
 2 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/assets/shaders/pixel.fs b/assets/shaders/pixel.fs
index 1af2679..de265bd 100644
--- a/assets/shaders/pixel.fs
+++ b/assets/shaders/pixel.fs
@@ -31,8 +31,8 @@ void main()
     vec2 baseUV = fragTexCoord;
     
     // Use a wave function to translate the pixel UV
-    float X = baseUV.x*5.+time;
-    float Y = baseUV.y*5.+time;
+    float X = baseUV.x*0.5+time;
+    float Y = baseUV.y*0.5+time;
     baseUV.y += cos(X+Y)*0.01*cos(Y);
     baseUV.x += sin(X-Y)*0.01*sin(Y);
 
diff --git a/src/logic/ingame/mod.rs b/src/logic/ingame/mod.rs
index 77b855a..1dbb09c 100644
--- a/src/logic/ingame/mod.rs
+++ b/src/logic/ingame/mod.rs
@@ -65,7 +65,12 @@ impl InGameScreen {
                 width: game_core.resources.background_back.width as f32,
                 height: game_core.resources.background_back.height as f32,
             },
-            Rectangle::new(0.0,0.0, (game_core.resources.background_back.width * 2) as f32, (game_core.resources.background_back.height * 2) as f32),
+            Rectangle::new(
+                0.0,
+                0.0,
+                (game_core.resources.background_back.width * 2) as f32,
+                (game_core.resources.background_back.height * 2) as f32,
+            ),
             Vector2 { x: 0.0, y: 0.0 },
             0.0,
             Color::WHITE,
@@ -78,7 +83,12 @@ impl InGameScreen {
                 width: game_core.resources.background_front.width as f32,
                 height: game_core.resources.background_front.height as f32,
             },
-            Rectangle::new(0.0 ,0.0, (game_core.resources.background_front.width * 2) as f32,(game_core.resources.background_front.height * 2) as f32),
+            Rectangle::new(
+                0.0,
+                0.0,
+                (game_core.resources.background_front.width * 2) as f32,
+                (game_core.resources.background_front.height * 2) as f32,
+            ),
             Vector2 { x: 0.0, y: 0.0 },
             0.0,
             Color::WHITE,
@@ -251,13 +261,22 @@ impl Screen for InGameScreen {
             }
         }
 
+        // Update the shader's internal time
+        unsafe {
+            let time_var_location = raylib::ffi::GetShaderLocation(
+                *game_core.resources.pixel_shader,
+                rstr!("time").as_ptr(),
+            );
+            game_core.resources.pixel_shader.set_shader_value(time_var_location, draw_handle.get_time() as f32);
+        }
+
         // Render the 2D context via the ripple shader
         {
             let mut shader_context =
                 draw_handle.begin_shader_mode(&game_core.resources.pixel_shader);
 
             // Blit the texture
-            shader_context.draw_texture_rec(
+            shader_context.draw_texture_pro(
                 &game_core.resources.shader_texture,
                 Rectangle {
                     x: 0.0,
@@ -265,7 +284,14 @@ impl Screen for InGameScreen {
                     width: game_core.resources.shader_texture.width() as f32,
                     height: (game_core.resources.shader_texture.height() as f32) * -1.0,
                 },
+                Rectangle {
+                    x: -10.0,
+                    y: -10.0,
+                    width: win_width as f32 + 20.0,
+                    height: win_height as f32 + 20.0
+                },
                 Vector2::zero(),
+                0.0,
                 Color::WHITE,
             );
         }