copy old glbackend files, no changes made for now, not workingtestglbackend2

1 files changed, 146 insertions, 0 deletions

diff --git a/OTKCrow/OpenGL/GLBackend/Font/FontShader (copier).cs b/OTKCrow/OpenGL/GLBackend/Font/FontShader (copier).cs
new file mode 100644
index 00000000..2a4c1571
--- /dev/null
+++ b/OTKCrow/OpenGL/GLBackend/Font/FontShader (copier).cs
@@ -0,0 +1,146 @@
+using System;
+using OpenTK.Graphics.OpenGL;
+
+namespace Crow.GLBackend
+{
+	public class FontShader : Shader
+	{
+		public FontShader ()
+		{
+			vertSource = @"
+				#version 130
+
+				precision highp float;
+
+				uniform mat4 projection_matrix;
+				uniform mat4 modelview_matrix;
+
+				in vec2 in_position;
+				in vec2 in_tex;
+				out vec2 texCoord;
+
+
+				void main(void)
+				{
+					texCoord = in_tex;
+					gl_Position = projection_matrix * modelview_matrix * vec4(in_position,0, 1);
+				}";
+
+			fragSource = @"
+				#version 130
+				precision highp float;
+
+				uniform vec4 color;
+				uniform sampler2D tex;
+				uniform sampler2D stencil;
+				uniform vec2 resolution;
+
+				in vec2 texCoord;
+				out vec4 out_frag_color;
+
+				vec3
+				energy_distribution( vec4 previous, vec4 current, vec4 next )
+				{
+					float primary = 1.0/3.0;
+					float secondary = 1.0/3.0;
+					float tertiary = 0.0;
+
+					// Energy distribution as explained on:
+					// http://www.grc.com/freeandclear.htm
+					//
+					// .. v..
+					// RGB RGB RGB
+					// previous.g + previous.b + current.r + current.g + current.b
+					//
+					// . .v. .
+					// RGB RGB RGB
+					// previous.b + current.r + current.g + current.b + next.r
+					//
+					// ..v ..
+					// RGB RGB RGB
+					// current.r + current.g + current.b + next.r + next.g
+
+					float r =
+					tertiary * previous.g +
+					secondary * previous.b +
+					primary * current.r +
+					secondary * current.g +
+					tertiary * current.b;
+
+					float g =
+					tertiary * previous.b +
+					secondary * current.r +
+					primary * current.g +
+					secondary * current.b +
+					tertiary * next.r;
+
+					float b =
+					tertiary * current.r +
+					secondary * current.g +
+					primary * current.b +
+					secondary * next.r +
+					tertiary * next.g;
+
+					return vec3(r,g,b);
+				}
+				void main(void)
+				{
+				    float a = texture( tex, texCoord).r;
+
+				    if (a==0.)
+				        discard;
+
+					float x = gl_FragCoord.x / resolution.x;
+				    float s = mod(x,x);
+
+					vec4 current = color * texture( tex, texCoord).r;
+					vec4 previous = color * texture( tex, texCoord + vec2(-x,0)).r;
+					vec4 next = color * texture( tex, texCoord + vec2(x,0)).r;
+
+					float r = current.r;
+					float g = current.g;
+					float b = current.b;
+
+					if( s <= 0.333 )
+					{
+						float z = s/0.333;
+						r = mix(current.r, previous.b, z);
+						g = mix(current.g, current.r, z);
+						b = mix(current.b, current.g, z);
+					}
+					else if( s <= 0.666 )
+					{
+						float z = (s-0.33)/0.333;
+						r = mix(previous.b, previous.g, z);
+						g = mix(current.r, previous.b, z);
+						b = mix(current.g, current.r, z);
+					}
+					else if( s < 1.0 )
+					{
+						float z = (s-0.66)/0.334;
+						r = mix(previous.g, previous.r, z);
+						g = mix(previous.b, previous.g, z);
+						b = mix(current.r, previous.b, z);
+					}
+
+
+					out_frag_color = vec4(energy_distribution(previous, current, next),1);					
+				}";
+
+			Compile ();
+
+		}
+
+		protected override void BindVertexAttributes ()
+		{
+			base.BindVertexAttributes ();
+			GL.BindAttribLocation(pgmId, 1, "in_tex");
+		}
+		protected override void BindSamplesSlots ()
+		{
+			GL.Uniform1(GL.GetUniformLocation (pgmId, "tex"),0);
+			//GL.Uniform1(GL.GetUniformLocation (pgmId, "stencil"),1);
+		}
+	}
+}
+