Mali GPU User Interface Engine Application Development Guide

Tutorial on Drawing 3D ShapesExample 4-18 Shaders...// Loading programsProgram* perVertexLightingProgram =proxy.getProgram("../shaders/per_vertex_lighting.vert;../shaders/per_vertex_lighting.frag");Program* perFragmentLightingProgram =proxy.getProgram("../shaders/per_fragment_lighting.vert;../shaders/per_fragment_lighting.frag");There are two lighting programs, and each program has a fragment shader and a vertexshader:Vertex lighting programThe per_vertex_lighting.frag fragment shader is based on the ambient,diffuse, and specular lighting as shown in Example 4-19:Example 4-19 per_vertex_lighting.frag#ifdef GL_ESprecision mediump float;#endifuniform vec3 AMBIENT_LIGHT;uniform vec4 COLOR;varying vec3 vDiffuse;varying vec3 vSpecular;void main(void){gl_FragColor = vec4(AMBIENT_LIGHT, 1.0) * COLOR +vec4(vDiffuse, 1.0) * COLOR +vec4(vSpecular, 1.0);}The per_vertex_lighting.vert vertex shader is listed in Example 4-20:Example 4-20 per_vertex_lighting.vertuniform mat4 WORLD_VIEW_PROJECTION;uniform mat3 WORLD;uniform vec3 LIGHT_POSITION;uniform vec3 CAMERA_POSITION;uniform vec3 DIFFUSE_LIGHT;uniform vec3 SPECULAR_LIGHT;attribute vec4 POSITION;attribute vec3 NORMAL;varying vec3 vDiffuse;varying vec3 vSpecular;void main(void){gl_Position = WORLD_VIEW_PROJECTION * POSITION;vec3 normal = normalize(WORLD * NORMAL);ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-16ID070710Non-Confidential - Draft - Beta