From 770305e28dc0ed9aea0eefe041477a46d64eee58 Mon Sep 17 00:00:00 2001 From: kwolekr Date: Tue, 23 Apr 2013 18:39:10 -0400 Subject: Add option to use texture alpha channel --- client/shaders/test_shader_3/opengl_fragment.glsl | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 client/shaders/test_shader_3/opengl_fragment.glsl (limited to 'client/shaders/test_shader_3/opengl_fragment.glsl') diff --git a/client/shaders/test_shader_3/opengl_fragment.glsl b/client/shaders/test_shader_3/opengl_fragment.glsl new file mode 100644 index 000000000..78abadcaf --- /dev/null +++ b/client/shaders/test_shader_3/opengl_fragment.glsl @@ -0,0 +1,23 @@ + +uniform sampler2D myTexture; +uniform float fogDistance; + +varying vec3 vPosition; + +void main (void) +{ + vec4 col = texture2D(myTexture, vec2(gl_TexCoord[0])); + col *= gl_Color; + col = col * col; // SRGB -> Linear + col *= 1.8; + 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); + col = sqrt(col); // Linear -> SRGB + float a = col.a; + if(fogDistance != 0.0){ + float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0)); + a = mix(a, 0.0, d); + } + gl_FragColor = vec4(col.r, col.g, col.b, a); +} -- cgit v1.2.3