From dbc18ddac64d7ff01c56f5b99712ce11bf935100 Mon Sep 17 00:00:00 2001
From: Christoph Diehl <cdiehl@mozilla.com>
Date: Thu, 13 Apr 2017 00:28:12 +0300
Subject: [PATCH] Add shaders.js

---
 make/shaders.js | 142 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 make/shaders.js

diff --git a/make/shaders.js b/make/shaders.js
new file mode 100644
index 0000000..0473d04
--- /dev/null
+++ b/make/shaders.js
@@ -0,0 +1,142 @@
+make.shaders = {
+  fragment1: function() {
+    [
+      [
+        "#ifdef GL_ES",
+        "precision mediump float;"
+        "#endif",
+        "varying vec4 vColor;",
+        "void main() {",
+          "gl_FragColor=vColor;",
+        "}",
+      ],
+      [
+        "varying highp vec2 vTextureCoord;",
+        "varying highp vec3 vLighting;",
+        "uniform sampler2D uSampler;",
+        "void main(void) {",
+          "highp vec4 texelColor = texture2D(uSampler, vec2(vTextureCoord.s, vTextureCoord.t));",
+          "gl_FragColor = vec4(texelColor.rgb * vLighting, texelColor.a);",
+        "}"
+      ]
+    ],
+  },
+  vertex1: function () {
+    [
+      [
+        "attribute vec4 aVertex;",
+        "attribute vec4 aColor;",
+        "varying vec4 vColor;",
+        "void main(){",
+          "vColor=aColor;",
+          "gl_Position=aVertex;",
+        "}",
+      ],
+      [
+        "attribute highp vec3 aVertexNormal;",
+        "attribute highp vec3 aVertexPosition;",
+        "attribute highp vec2 aTextureCoord;",
+        "uniform highp mat4 uNormalMatrix;",
+        "uniform highp mat4 uMVMatrix;",
+        "uniform highp mat4 uPMatrix;",
+        "varying highp vec2 vTextureCoord;",
+        "varying highp vec3 vLighting;",
+        "void main(void) {",
+          "gl_Position = uPMatrix * uMVMatrix * vec4(aVertexPosition, 1.0);",
+          "vTextureCoord = aTextureCoord;",
+          "highp vec3 ambientLight = vec3(0.6, 0.6, 0.6);",
+          "highp vec3 directionalLightColor = vec3(0.5, 0.5, 0.75);",
+          "highp vec3 directionalVector = vec3(0.85, 0.8, 0.75);",
+          "highp vec4 transformedNormal = uNormalMatrix * vec4(aVertexNormal, 1.0);",
+          "highp float directional = max(dot(transformedNormal.xyz, directionalVector), 0.0);",
+          "vLighting = ambientLight + (directionalLightColor * directional);",
+        "}"
+      ]
+    ]
+  },
+  fragment2: function() {
+    [
+      [
+        "varying highp vec2 vTextureCoord;",
+        "varying highp vec3 vLighting;",
+        "uniform sampler2D uSampler;",
+        "void main(void) {",
+          "highp vec4 texelColor = texture2D(uSampler, vec2(vTextureCoord.s, vTextureCoord.t));",
+          "gl_FragColor = vec4(texelColor.rgb * vLighting, texelColor.a);",
+        "}"
+      ],
+      [
+        "#version proto-200",
+        "uniform sampler2D albedoMap;",
+        "uniform sampler2D normalMap;",
+        "varying vec3 varyingTangent;",
+        "varying vec3 varyingBitangent;",
+        "varying vec3 varyingNormal;",
+        "varying vec2 varyingUV;",
+        "void main(void) {",
+          "vec3 albedo=texture2D(albedoMap,varyingUV).rgb;",
+          "vec3 normal=texture2D(normalMap,varyingUV).rgb*2.0-1.0;",
+          "float specularFactor=pow((albedo.r+albedo.g+albedo.b)*0.33,2.0);",
+          "float specularHardness=2.0;",
+          "vec3 spaceNormal=varyingTangent*normal.x+varyingBitangent*normal.y+varyingNormal*normal.z;",
+          "gl_FragData[0]=vec4(albedo,1.0);",
+          "gl_FragData[1]=vec4(spaceNormal*0.5 +0.5,1.0);",
+          "gl_FragData[2]=vec4(specularFactor,specularHardness*0.1,0.0,1.0);",
+        "}"
+      ]
+    ]
+  },
+  vertex2: function() {
+    [
+      [
+        "attribute highp vec3 aVertexNormal;",
+        "attribute highp vec3 aVertexPosition;",
+        "attribute highp vec2 aTextureCoord;",
+        "uniform highp mat4 uNormalMatrix;",
+        "uniform highp mat4 uMVMatrix;",
+        "uniform highp mat4 uPMatrix;",
+        "varying highp vec2 vTextureCoord;",
+        "varying highp vec3 vLighting;",
+        "void main(void) {",
+          "gl_Position = uPMatrix * uMVMatrix * vec4(aVertexPosition, 1.0);",
+          "vTextureCoord = aTextureCoord;",
+          "highp vec3 ambientLight = vec3(0.6, 0.6, 0.6);",
+          "highp vec3 directionalLightColor = vec3(0.5, 0.5, 0.75);",
+          "highp vec3 directionalVector = vec3(0.85, 0.8, 0.75);",
+          "highp vec4 transformedNormal = uNormalMatrix * vec4(aVertexNormal, 1.0);",
+          "highp float directional = max(dot(transformedNormal.xyz, directionalVector), 0.0);",
+          "vLighting = ambientLight + (directionalLightColor * directional);",
+        "}"
+      ],
+      [
+        "#version proto-200",
+        "attribute vec3 vertexPosition;",
+        "attribute vec3 vertexTangent;",
+        "attribute vec3 vertexBitangent;",
+        "attribute vec3 vertexNormal;",
+        "attribute vec2 vertexUV;",
+        "uniform mat4 modelMatrix;",
+        "uniform mat4 viewMatrix;",
+        "varying vec3 varyingTangent;",
+        "varying vec3 varyingBitangent;",
+        "varying vec3 varyingNormal;",
+        "varying vec2 varyingUV;",
+        "void main(void){",
+          "gl_Position=viewMatrix*(modelMatrix*vec4(vertexPosition,1.0));",
+          "gl_Position.xy=gl_Position.xy*0.5+(float(gl_InstanceID)-0.5);",
+          "varyingTangent=(modelMatrix*vec4(vertexTangent,0.0)).xyz;",
+          "varyingBitangent=(modelMatrix*vec4(vertexBitangent,0.0)).xyz;",
+          "varyingNormal=(modelMatrix*vec4(vertexNormal,0.0)).xyz;",
+          "varyingUV = vertexUV;",
+        "}"
+       ]
+    ],
+  },
+  shaderPair: function(v, f) {
+    var i = Random.number(v.length);
+    return {
+      vertex: Utils.quote(v[i].join("\n")),
+      fragment: Utils.quote(f[i].join("\n"))
+    };
+  },
+}