Mali GPU User Interface Engine Application Development Guide

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Tutorial on Drawing 3D Shapes4.2 Coloring the cube facesThis tutorial shows how to color the cube faces based on the color of the vertices.1. Locate the shader example project 02 Coloring and open the coloring.cpp file.2. The vertexData[] array in Example 4-3 on page 4-3 did not specify the face color.Example 4-7 shows how both the position and color are specified in the vertex array:Example 4-7 Setting the vertex position and color...GLfloat vertexData[] = {// FRONT-0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f,0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f,-0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f,0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f,// BACK-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 1.0f,-0.5f, 0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 1.0f,0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 1.0f,0.5f, 0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 1.0f,// LEFT-0.5f, -0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f,-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f,-0.5f, -0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f,-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f,// RIGHT0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 1.0f, 1.0f,0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 1.0f, 1.0f,0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 1.0f, 1.0f,0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 1.0f, 1.0f,// TOP-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f,0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f,-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 1.0f,0.5f, 0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 1.0f,// BOTTOM-0.5f, -0.5f, 0.5f, 1.0f, 1.0f, 0.0f, 1.0f,-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 1.0f,0.5f, -0.5f, 0.5f, 1.0f, 1.0f, 0.0f, 1.0f,0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 1.0f,};// x,y,z, r,g,b,alphaManaged vertexBuffer =context->createBuffer(GL_ARRAY_BUFFER, sizeof(vertexData), sizeof(GLfloat)*7);vertexBuffer->setData(0, sizeof(vertexData), vertexData);context->setVertexBuffer(0, vertexBuffer);VertexElement elements[2]; // two elements: xyz for vertex and rgba for colorelements[0].components = 3;elements[0].offset = 0;elements[0].semantic = POSITION;elements[0].stream = 0;elements[0].type = GL_FLOAT;elements[1].components = 4;elements[1].offset = 3*sizeof(GLfloat);elements[1].semantic = COLOR; // the color is determined by the vertex colorelements[1].stream = 0;elements[1].type = GL_FLOAT;ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-6ID070710Non-Confidential - Draft - Beta
Tutorial on Drawing 3D Shapes...Managed vertexDeclaration =context->createVertexDeclaration(elements, 2); // two elementscontext->setVertexDeclaration(vertexDeclaration);3. Rebuild the project and run it. Figure 4-2 shows the shape with vertex coloring:Figure 4-2 The Hello World shape with vertex coloringARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-7ID070710Non-Confidential - Draft - Beta
Page 1 and 2: MaliGPU User Interface EngineVersio
Page 3 and 4: ContentsMali GPU User Interface Eng
Page 5 and 6: List of TablesMali GPU User Interfa
Page 7 and 8: List of FiguresFigure 4-17 Environm
Page 9 and 10: PrefaceAbout this bookThis is the M
Page 11 and 12: PrefaceFeedbackARM welcomes feedbac
Page 13 and 14: 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
Page 21 and 22: Tutorial on the System ClassesFigur
Page 23 and 24: Tutorial on the System ClassesDrawi
Page 29 and 30: Chapter 3Tutorial on Drawing 2D Sha
Page 31 and 32: Tutorial on Drawing 2D Shapes...con
Page 33 and 34: Tutorial on Drawing 2D ShapesFor ea
Page 36 and 37: Tutorial on Drawing 2D ShapesExampl
Page 38 and 39: Tutorial on Drawing 2D Shapes...ele
Page 42 and 43: Tutorial on Drawing 2D ShapesFigure
Page 44 and 45: Tutorial on Drawing 3D Shapes4.1 Dr
Page 50 and 51: Tutorial on Drawing 3D Shapes4.3 Te
Page 52 and 53: Tutorial on Drawing 3D Shapesvec3 c
Page 54 and 55: Tutorial on Drawing 3D Shapes...0.5
Page 56 and 57: Tutorial on Drawing 3D ShapesThe tr
Page 60 and 61: Tutorial on Drawing 3D Shapes}vec4(
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Tutorial on Drawing 3D Shapes}}prin
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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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