Mali GPU User Interface Engine Application Development Guide

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Tutorial on Drawing 3D Shapes...{}if (keyboard->getSpecialKeyState(Keyboard::KEY_RIGHT)){world_teapot *= mat4::rotation(1.0f, vec3(0.0f, 0.0f, 1.0f));}if (keyboard->getSpecialKeyState(Keyboard::KEY_LEFT)){world_cube *= mat4::rotation(-1.0f, vec3(0.0f, 0.0f, 1.0f));}9. Modify the code that draws the shapes to use the new world-view-projections as shownin Example 4-32:Example 4-32 Independent worlds for the teapot and cube...wvpMatrix_teapot = proj * view * world_teapot* mat4::translation(0.0, 0.0,20.0);// Clear the screen and set the uniformscontext->setUniformMatrix("WORLD_VIEW_PROJECTION", wvpMatrix_teapot);context->setUniformMatrix("WORLD", world_teapot.toMat3());...teapot->draw();wvpMatrix_cube = proj * view * world_cube* mat4::translation(0.0, -0.0, -20.0);context->setUniformMatrix("WORLD_VIEW_PROJECTION", wvpMatrix_cube);context->setUniformMatrix("WORLD", world_cube.toMat3());cube->draw();}while ( context->update() );10. Rebuild the project and run it. Figure 4-8 now shows a shapes at different location on thez axis:Figure 4-8 The lighting example with a cube and teapot vertically offsetARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-24ID070710Non-Confidential - Draft - Beta
Tutorial on Drawing 3D Shapes4.5 Bump mapping on the cubeThis tutorial combines:• using a geometry asset, in this example it is a cube• bump mapping• reacting to keyboard input to rotate the cube or move the camera.1. Locate the shader example 05 - BumpMapping and open the bumpmapping.cpp file.2. Example 4-33 shows the standard initialization code:Example 4-33 Initialization for the Bump Mapping application...##include using namespace MDE;const float AMBIENT = 0.2;const float DIFFUSE_CONTRIBUTION = 0.7;const float SPECULAR_CONTRIBUTION = 0.4;static const vec3 AMBIENT_LIGHT = vec3 (0.2f, 0.2f, 0.2f);static const vec3 DIFFUSE_LIGHT = vec3(0.7f, 0.7f, 0.7f);static const vec3 SPECULAR_LIGHT = vec3(0.4f, 0.4f, 0.4f);static const float PI = 3.14159265;/*** Function that calculates the camera position given an angle and a radius. This function* enables the camera to rotate around the scene object.*/inline vec3 calculateCamPos(float radius, float angle){float angleRad = angle / 180 * PI;return vec3(radius * cos(angleRad), radius * sin(angleRad), 0.0f);}int main(int argc, char * argv[]){try{// Initialize the demo engine classesManaged system = create_system_backend();Managed context = system->createContext(320, 240);#ifdef MDE_OS_PC_LINUXManaged keyboard = system->createKeyboard(context);#elseManaged keyboard = system->createKeyboard();#endifManaged filesystem = system->createFileSystem("./data");Managed timer = system->createTimer();Proxy proxy(filesystem, context);// Loading programsProgram* perVertexLightingProgram =proxy.getProgram("../shaders/bumpmapping.vert;../shaders/bumpmapping.frag");...3. Previous examples specified the locations for each vertex. Example 4-34 on page 4-26shows how to load an asset file that contains the information:ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-25ID070710Non-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
Page 15 and 16: IntroductionProxygetLoader()LoaderA
Page 17 and 18: Chapter 2Tutorial on the System Cla
Page 19 and 20: Tutorial on the System Classes2.2 C
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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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