OpenGL indirect drawing for ui quad

  (shader and vao)

1 files changed, 65 insertions, 0 deletions

diff --git a/src/OpenGL/TexturedShader.cs b/src/OpenGL/TexturedShader.cs
new file mode 100644
index 00000000..a410b16e
--- /dev/null
+++ b/src/OpenGL/TexturedShader.cs
@@ -0,0 +1,65 @@
+using System;
+using OpenTK.Graphics.OpenGL;
+
+namespace go.GLBackend
+{
+	public class TexturedShader : Shader
+	{
+		public TexturedShader ()
+		{
+			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;
+
+				in vec2 texCoord;
+				out vec4 out_frag_color;
+
+				void main(void)
+				{
+//					vec4 s = texture( stencil, texCoord);
+//					if (s.r == 0)
+//						discard;
+					vec4 t = texture( tex, texCoord);
+					out_frag_color = t;
+				}";
+
+			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);
+		}
+	}
+}
+