Adding source of P2DX renderer

Author: codeanticode

core/src/assets/shaders/P2DFrag.glsl

@@ -0,0 +1,14 @@
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+varying vec4 vertColor;
+varying vec2 vertTexCoord;
+varying float vertTexFactor;
+
+uniform sampler2D texture;
+
+void main() {
+  gl_FragColor = mix(vertColor, vertColor * texture2D(texture, vertTexCoord), vertTexFactor);
+}

core/src/assets/shaders/P2DVert.glsl

@@ -0,0 +1,23 @@
+attribute vec3 position;
+attribute vec4 color;
+attribute vec2 texCoord;
+attribute float texFactor;
+
+varying vec4 vertColor;
+varying vec2 vertTexCoord;
+varying float vertTexFactor;
+
+uniform mat4 transform;
+uniform vec2 texScale;
+
+void main() {
+  gl_Position = transform * vec4(position, 1);
+
+  //we avoid affecting the Z component by the transform
+  //because it would mess up our depth testing
+  gl_Position.z = position.z;
+
+  vertColor = color.zyxw;
+  vertTexCoord = texCoord * texScale;
+  vertTexFactor = texFactor;
+}