Mali GPU User Interface Engine Application Development Guide

Tutorial on Drawing 3D Shapes// specify flare.vert and flare.frag as the active shaderscontext->setProgram(flarePrg);context->setUniformMatrix("VIEW", view);context->setUniformMatrix("PROJECTION", proj);context->setUniformSampler("colorTex", flareTex);// call drawFlare with the light position, color, and flare sizedrawFlare(context, light0position, light0color, 10);glDepthMask(GL_TRUE);glDisable(GL_BLEND);frameCount++;}while (context->update());}catch(Exception& e){printf("An exception was thrown:\n%s\n", e.getMessage().getCharString() );}9. Example 4-66 shows the vertex shader code for the flare:Example 4-66 Flare vertex shader flare.vert...uniform mat4 VIEW;uniform mat4 PROJECTION;uniform float size;uniform vec3 position;attribute vec2 TEXCOORD0;varying vec2 outTexcoord;void main(void){// calculate the location of the flare in the world viewvec4 p = VIEW * vec4(position, 1.0);// increase the size of the flare// shift by -size to +size depending on value of TEXCOORD0p.xy += (TEXCOORD0 * 2.0 - 1.0) * size;// calculate the display positiongl_Position = PROJECTION * p;// forward the text coordinate to the fragment shaderoutTexcoord = TEXCOORD0;}10. Example 4-67 shows the fragment shader code for the flare:Example 4-67 Flare fragment shader flare.frag...uniform sampler2D colorTex;uniform vec3 color;void main(void){ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-54ID070710Non-Confidential - Draft - Beta