From 630038754c1a9a04e05fc59bdbced17c06f3dab5 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Wed, 23 May 2018 20:16:09 +0200
Subject: Pass texture count to display fragment shader

---
 src/shader/display_fragment.glsl | 25 +++++--------------------
 1 file changed, 5 insertions(+), 20 deletions(-)

(limited to 'src/shader')

diff --git a/src/shader/display_fragment.glsl b/src/shader/display_fragment.glsl
index 03986a0..b731ebe 100644
--- a/src/shader/display_fragment.glsl
+++ b/src/shader/display_fragment.glsl
@@ -4,27 +4,12 @@ static const std::string DISPLAY_FRAGMENT_SHADER_CODE = R"(
 out vec4 FragColor;
 in vec2 TexCoords;
 
-uniform sampler2D screen_texture_0;
-uniform sampler2D screen_texture_1;
-uniform sampler2D screen_texture_2;
-uniform sampler2D screen_texture_3;
-uniform sampler2D screen_texture_4;
-uniform sampler2D screen_texture_5;
-uniform sampler2D screen_texture_6;
-uniform sampler2D screen_texture_7;
-uniform sampler2D screen_texture_8;
-uniform sampler2D screen_texture_9;
+uniform sampler2D screen_textures[64];
+uniform int screen_textures_size;
 
 void main() {
-	FragColor =       texture(screen_texture_0, TexCoords)
-	          + 0.9 * texture(screen_texture_1, TexCoords)
-	          + 0.8 * texture(screen_texture_2, TexCoords)
-	          + 0.7 * texture(screen_texture_3, TexCoords)
-	          + 0.6 * texture(screen_texture_4, TexCoords)
-	          + 0.5 * texture(screen_texture_5, TexCoords)
-	          + 0.4 * texture(screen_texture_6, TexCoords)
-	          + 0.3 * texture(screen_texture_7, TexCoords)
-	          + 0.2 * texture(screen_texture_8, TexCoords)
-	          + 0.1 * texture(screen_texture_9, TexCoords);
+	for ( int i = 0; i < screen_textures_size; ++i ) {
+		FragColor += (1.0 - i*1.0/screen_textures_size) * texture(screen_textures[i], TexCoords);
+	}
 }
 )";
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