Mali GPU User Interface Engine Application Development Guide

Tutorial on Drawing 3D Shapesshadow = 1.0 - shadow;shadow = max(0.0, shadow);shadow = min(1.0, shadow);}return shadow;vec2 calcLight(vec3 tLightDir, vec3 oLightDir, vec3 oPos, vec3 tNormal,vec3 tRefViewDir, vec2 texcoord){float lightDist = length(tLightDir);tLightDir = normalize(tLightDir);float l_dot_n = max(dot(tNormal, tLightDir), 0.0);float h_dot_n = max(dot(tRefViewDir, tLightDir), 0.0);float attenuation = max(0.0, 120.0 - lightDist) / 90.0;attenuation *= attenuation;// use the shadow value to calculate the diffuse and specular lightfloat shadow = getShadow(oPos.xy) * attenuation;float diffuse = l_dot_n * shadow;float specular = pow(h_dot_n, 50.0) * shadow;}return vec2(diffuse, specular);void main(void){vec2 texcoord = outTexcoord.xy;vec3 tNormal = normalize((2.0*texture2D(normalMap, outTexcoord.xy).xyz)-1.0);vec3 tViewDirNorm = normalize(tViewDir);vec3 tRefViewDir = reflect(tViewDirNorm, tNormal);vec3 diffuseLight = vec3(0.0, 0,0);vec3 specularLight = vec3(0,0,0);{}vec3 lightColor = light0color;vec2 diffuseSpecular = calcLight(tLight0Dir, oLight0Dir, oPos, tNormal,tRefViewDir, texcoord);diffuseLight.xyz += lightColor * diffuseSpecular.x;specularLight.xyz += lightColor * diffuseSpecular.y * texture2D(glossMap,texcoord).x;}vec3 texDiffuse = texture2D(diffuseMap, outTexcoord.xy).xyz;gl_FragColor = vec4(diffuseLight*texDiffuse + specularLight,1);8. Example 4-65 shows the code that sets the uniforms for the flare and calls drawFlare():Example 4-65 Drawing the flare...glDepthMask(GL_FALSE);glEnable(GL_BLEND);glBlendFunc(GL_SRC_ALPHA, GL_ONE);ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-53ID070710Non-Confidential - Draft - Beta