Add ToT WebGL conformance tests : part 9

conformance/ogles/GL2FixedTests/buffer_objects/buffer_objects.vert

+
+/*
+** Copyright (c) 2012 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+
+attribute vec4 gtf_Color;
+attribute vec4 gtf_Vertex;
+attribute vec3 gtf_Normal;
+attribute vec4 gtf_MultiTexCoord0;
+
+uniform mat4 gtf_ModelViewProjectionMatrix;
+uniform mat3 gtf_NormalMatrix;
+
+varying vec4 gtf_TexCoord[1];
+varying vec4 color;
+
+vec4 Ambient;
+vec4 Diffuse;
+vec4 Specular;
+
+const vec3 lightPosition = vec3(0.0, 0.0, 1.0);
+const vec3 spotDirection = vec3(0.0, 0.0, -1.0);
+const float spotCutoff = 180.0;
+const float spotExponent = 0.0;
+
+const float lightAttenuationConstant = 1.0;
+const float lightAttenuationLinear = 0.0;
+const float lightAttenuationQuadratic = 0.0;
+
+const vec4 lightAmbient = vec4(0.0, 0.0, 0.0, 0.0);
+vec4 lightDiffuse = vec4(1.0, 1.0, 1.0, 1.0);
+vec4 lightSpecular = vec4(1.0, 1.0, 1.0, 1.0);
+
+const float materialShininess = 0.0;
+
+const vec4 sceneColor = vec4(0.0, 0.0, 0.0, 0.0);
+
+void spotLight(in int i,
+               in vec3 normal,
+               in vec3 eye,
+               in vec3 ecPosition3
+               )
+{
+    float nDotVP;           // normal . light direction
+    float nDotHV;           // normal . light half vector
+    float pf;               // power factor
+    float spotDot;          // cosine of angle between spotlight
+    float spotAttenuation;  // spotlight attenuation factor
+    float attenuation;      // computed attenuation factor
+    float d;                // distance from surface to light source
+    vec3 VP;                // direction from surface to light position
+    vec3 halfVector;        // direction of maximum highlights
+
+    // Compute vector from surface to light position
+    VP = lightPosition - ecPosition3;
+
+    // Compute distance between surface and light position
+    d = length(VP);
+
+    // Normalize the vector from surface to light position
+    VP = normalize(VP);
+
+    // Compute attenuation
+    attenuation = 1.0 / (lightAttenuationConstant +
+                         lightAttenuationLinear * d +
+                         lightAttenuationQuadratic * d * d);
+
+    // See if point on surface is inside cone of illumination
+    spotDot = dot(-VP, normalize(spotDirection));
+
+    if (spotDot < cos(radians(spotCutoff)))
+        spotAttenuation = 0.0; // light adds no contribution
+    else
+        spotAttenuation = pow(spotDot, spotExponent);
+
+    // Combine the spotlight and distance attenuation.
+    attenuation *= spotAttenuation;
+
+    halfVector = normalize(VP + eye);
+
+    nDotVP = max(0.0, dot(normal, VP));
+    nDotHV = max(0.0, dot(normal, halfVector));
+
+    if (nDotVP == 0.0)
+        pf = 0.0;
+    else
+        pf = pow(nDotHV, materialShininess);
+
+    Ambient  += lightAmbient * attenuation;
+    Diffuse  += lightDiffuse * nDotVP * attenuation;
+    Specular += lightSpecular * pf * attenuation;
+}
+
+vec3 fnormal(void)
+{
+    //Compute the normal 
+    vec3 normal = gtf_NormalMatrix * gtf_Normal;
+    normal = normalize(normal);
+    
+        return normal;
+}
+
+void flight(in vec3 normal, in vec4 ecPosition, float alphaFade)
+{
+    vec3 ecPosition3;
+    vec3 eye;
+
+    ecPosition3 = (vec3 (ecPosition)) / ecPosition.w;
+    eye = vec3 (0.0, 0.0, 1.0);
+
+    // Clear the light intensity accumulators
+    Ambient  = vec4 (0.0);
+    Diffuse  = vec4 (0.0);
+    Specular = vec4 (0.0);
+   
+   //lightSpecular = gtf_Color;
+
+    spotLight(0, normal, eye, ecPosition3);
+
+    color = sceneColor +
+      Ambient  * gtf_Color +
+      Diffuse  * gtf_Color;
+    color += Specular * gtf_Color;
+    color = clamp( color, 0.0, 1.0 );
+
+    color.a *= alphaFade;
+}
+
+void main (void)
+{
+        vec3  transformedNormal;
+    float alphaFade = 1.0;
+        
+        vec4 ecPosition = gtf_Vertex;
+        
+        color = gtf_Color;
+        gtf_TexCoord[0] = gtf_MultiTexCoord0;
+        gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
+        transformedNormal = fnormal();
+    flight(transformedNormal, ecPosition, alphaFade);
+}