27.09.2020

~ Moved Default-Shader to 2D to provied 2D-specific feature
~ Fixed UVs in Polygon

SMCode/SM2D/Shader/Default2DShader.cs

@@ -0,0 +1,47 @@
+using OpenTK.Graphics.OpenGL4;
+using SM.Base.Contexts;
+using SM.Base.Scene;
+using SM.OGL.Shaders;
+using SM.Utility;
+
+namespace SM2D.Shader
+{
+    public class Default2DShader : GenericShader, IShader
+    {
+        protected override bool AutoCompile { get; } = true;
+
+        public Default2DShader() : base(new ShaderFileCollection(
+            AssemblyUtility.ReadAssemblyFile("Shader.ShaderFiles.default.vert"),
+            AssemblyUtility.ReadAssemblyFile("Shader.ShaderFiles.default.frag")))
+        {
+
+        }
+        public void Draw(DrawContext context)
+        {
+            GL.UseProgram(this);
+
+            GL.BindVertexArray(context.Mesh);
+
+            // Vertex Uniforms
+            Uniforms["MVP"].SetMatrix4(context.View * context.World);
+            Uniforms["HasVColor"].SetUniform1(context.Mesh.AttribDataIndex.ContainsKey(3) && context.Mesh.AttribDataIndex[3] != null);
+
+            for (int i = 0; i < context.Instances.Length; i++)
+            {
+                GL.UniformMatrix4(Uniforms["ModelMatrix"] + i, false, ref context.Instances[i].ModelMatrix);
+                GL.Uniform2(Uniforms["TextureOffset"] + i, context.Instances[i].TexturePosition);
+                GL.Uniform2(Uniforms["TextureScale"] + i, context.Instances[i].TextureScale);
+            }
+
+            // Fragment Uniforms
+            Uniforms["Tint"].SetUniform4(context.Material.Tint);
+            Uniforms["Texture"].SetTexture(context.Material.Texture, Uniforms["UseTexture"]);
+
+            DrawObject(context.Mesh, context.Instances.Length);
+
+            CleanUp();
+
+            GL.UseProgram(0);
+        }
+    }
+}

SMCode/SM2D/Shader/ShaderFiles/default.frag

@@ -0,0 +1,15 @@
+#version 330
+
+in vec2 vTexture;
+in vec4 vColor;
+
+uniform vec4 Tint;
+uniform bool UseTexture;
+uniform sampler2D Texture;
+
+layout(location = 0) out vec4 color;
+
+void main() {
+    color = vColor * Tint;
+    if (UseTexture) color *= texture(Texture, vTexture);
+}

SMCode/SM2D/Shader/ShaderFiles/default.vert

@@ -0,0 +1,23 @@
+#version 330
+#define maxInstances 32
+layout(location = 0) in vec3 aPos;
+layout(location = 1) in vec2 aTex;
+layout(location = 3) in vec4 aColor;
+
+uniform mat4 MVP;
+uniform bool HasVColor;
+uniform mat4 ModelMatrix[maxInstances];
+uniform vec2 TextureOffset[maxInstances];
+uniform vec2 TextureScale[maxInstances];
+
+out vec2 vTexture;
+out vec4 vColor;
+
+void main() {
+    vTexture = aTex * TextureScale[gl_InstanceID] + TextureOffset[gl_InstanceID];
+
+    if (HasVColor) vColor = aColor;
+    else vColor = vec4(1);
+
+    gl_Position = MVP * ModelMatrix[gl_InstanceID] * vec4(aPos, 1);
+}