Mali GPU User Interface Engine Application Development Guide

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Tutorial on Drawing 3D Shapes• the geometry for the central rotating shape• the camera path• the lighting sources.The asset file is organized in nodes. The application calls the traverse() function tocalculate the current position and orientation for the central shape and the camera.ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-46ID070710Non-Confidential - Draft - Beta
Tutorial on Drawing 3D Shapes4.8 Lightshow animation with moving sprite and cameraThis tutorial combines:• a complex geometry asset• multiple varying light sources• frame rate calculation• automated movement of the camera• automated movement of a simple shape.Open the Lightshow example application:1. Example 4-58 shows the code in main.cpp that draws the flare:Example 4-58 Drawing the flare...void prepareFlares(Context* context, Program* p){float texcoords[] = { 0,0, 1,0, 1,1, 0,1 };flareTexcoord = context->createBuffer(GL_ARRAY_BUFFER, sizeof(texcoords), 8);flareTexcoord->setData(0, sizeof(texcoords), texcoords);}flareTexcoordsLoc = p->getAttribLocation(TEXCOORD0);void drawFlare(Context* context, vec3 position, vec3 color, float size){context->setUniform("position", position);context->setUniform("color", color);context->setUniform("size", size);glEnableVertexAttribArray(flareTexcoordsLoc);glBindBuffer(GL_ARRAY_BUFFER, flareTexcoord->getHandle());glVertexAttribPointer(flareTexcoordsLoc, 2, GL_FLOAT, GL_FALSE, 0, 0);}...unsigned short indices[] ={0, 1, 2,0, 2, 3};glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);glDisableVertexAttribArray(flareTexcoordsLoc);2. Example 4-59 shows the code that traverses the tree that contains the paths:Example 4-59 Path traversal functionsvoid traverseTransform(Tree* node, mat4 parentTransform, float time){if (!node) return;traverseTransform(node->getNextSibling(), parentTransform, time);if (node->data)ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-47ID070710Non-Confidential - Draft - Beta
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MaliGPU User Interface EngineVersio
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ContentsMali GPU User Interface Eng
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List of TablesMali GPU User Interfa
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List of FiguresFigure 4-17 Environm
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PrefaceAbout this bookThis is the M
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PrefaceFeedbackARM welcomes feedbac
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Introduction1.1 About the Mali GPU
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IntroductionProxygetLoader()LoaderA
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Chapter 2Tutorial on the System Cla
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Tutorial on the System Classes2.2 C
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Tutorial on the System ClassesFigur
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Tutorial on the System ClassesDrawi
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Chapter 3Tutorial on Drawing 2D Sha
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Tutorial on Drawing 2D Shapes...con
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Tutorial on Drawing 2D ShapesFor ea
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Tutorial on Drawing 2D ShapesExampl
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Tutorial on the Lotion User Interfa
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Chapter 6Tutorial on Constructing C
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Tutorial on Constructing Custom Sha
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Appendix AMatrix and Vector Operati
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Matrix and Vector Operationsmat4 pe
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GlossaryThis glossary describes som
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GlossaryShader LibraryVertex shader
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