From: kwolekr <kwolekr@minetest.net>
Date: Thu, 25 Apr 2013 16:29:27 +0000 (-0400)
Subject: Transform alpha channel as well in shader
X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=ddd2b18321a6dad82c4618bfb8f797579d4d6666;p=zefram%2Fminetest%2Fminetest_engine.git

Transform alpha channel as well in shader
---

diff --git a/client/shaders/test_shader_3/opengl_fragment.glsl b/client/shaders/test_shader_3/opengl_fragment.glsl
index 78abadca..e42fef6e 100644
--- a/client/shaders/test_shader_3/opengl_fragment.glsl
+++ b/client/shaders/test_shader_3/opengl_fragment.glsl
@@ -9,7 +9,8 @@ void main (void)
 	vec4 col = texture2D(myTexture, vec2(gl_TexCoord[0]));
 	col *= gl_Color;
 	col = col * col; // SRGB -> Linear
-	col *= 1.8;
+	col *= 1.8;
+	col.a = 1.0 - exp(1.0 - col.a) / exp(1.0);
 	col.r = 1.0 - exp(1.0 - col.r) / exp(1.0);
 	col.g = 1.0 - exp(1.0 - col.g) / exp(1.0);
 	col.b = 1.0 - exp(1.0 - col.b) / exp(1.0);