Mali GPU User Interface Engine Application Development Guide

Tutorial on Drawing 2D ShapesFigure 3-3 The 2D triangle with per-vertex coloring and floating-point color values3.2.3 Combining the position coordinates and color values into a single array1. Locate the tutorial project 06 - Drawing a Triangle the Hard Way and open the main.cppfile.2. Modify the triangle data from Example 3-9 on page 3-8 to move the values fromcolorData[] to the corresponding row in vertexData[]. Delete the code that assigns valuesto colorData[].Example 3-11 Vertex shading of simple triangle with floating-point color values......GLfloat vertexData[] ={-1.0, -1.0, 1.0, 0, 0, 1.0,1.0, -1.0, 0, 1.0, 0, 1.0,0.0, 1.0 0, 0, 1.0, 1.0};3. Modify the vertex information from Example 3-5 on page 3-4 to create vertexBufferbased on the larger vertexData array as shown in Example 3-12:Example 3-12 Using floating-point values for the color buffers...Managed vertexBuffer = context->createBuffer(GL_ARRAY_BUFFER, sizeof(vertexData),sizeof(GLfloat)*6);vertexBuffer->setData(0, sizeof(vertexData), vertexData);VertexElement elements[2];elements[0].components = 2;elements[0].offset = 0;elements[0].semantic = POSITION;elements[0].stream = 0;elements[0].type = GL_FLOAT;elements[0].normalize = false;elements[1].components = 4;elements[1].offset = 2*sizeof(GLfloat);elements[1].semantic = COLOR;elements[1].stream = 1;ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 3-9ID070710Non-Confidential - Draft - Beta