Mali GPU User Interface Engine Application Development Guide

Tutorial on Drawing 3D Shapescontext->setUniform("cameraPosition", camPos);float cyl_radius = sqrt(30.0f);vec3 shadow_info[2] ={calculate_cyl_info(vec2(-30.0, -30.0), cyl_radius, vec2(light0position.x, light0position.y), 0.0),calculate_cyl_info(vec2( 30.0, 30.0), cyl_radius, vec2(light0position.x, light0position.y), 0.0)};context->setUniform("shadow_info[0]", shadow_info[0]);context->setUniform("shadow_info[1]", shadow_info[1]);...traverseDraw(scene->getTree(0), context);6. Example 4-63 shows the vertex shader code for the environment:Example 4-63 Environment vertex shader lightshow.vert...uniform mat4 WORLD;uniform mat4 INV_TRANS_WORLD;uniform mat4 VIEW_PROJECTION;uniform vec3 cameraPosition;uniform vec3 light0position;uniform vec3 light1position;uniform vec3 light2position;attribute vec4 POSITION;attribute vec2 TEXCOORD0;attribute vec3 NORMAL;attribute vec3 BINORMAL;attribute vec3 TANGENT;varying vec2 outTexcoord;varying vec3 oPos;varying vec3 tViewDir;/* lights */varying vec3 oLight0Dir;varying vec3 tLight0Dir;varying vec3 oLight1Dir;varying vec3 tLight1Dir;void main(){oPos = (WORLD * POSITION).xyz;gl_Position = VIEW_PROJECTION * vec4(oPos, 1);outTexcoord.xy = TEXCOORD0 * vec2(1,-1);mat3 m = mat3(INV_TRANS_WORLD[0].xyz, INV_TRANS_WORLD[1].xyz,INV_TRANS_WORLD[2].xyz);mat3 tangentSpace = mat3(m * TANGENT, m * BINORMAL, m * NORMAL);vec3 oViewDir = oPos - cameraPosition;ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-51ID070710Non-Confidential - Draft - Beta