Mali GPU User Interface Engine Application Development Guide

Tutorial on Drawing 3D Shapes}else if(attr->name == "far_attenuation_end"){float value;attr->getValue(time, &value);sprintf(buffer, "LIGHT_FAR_ATTENUATION_END[%i]", i);context->setUniform(buffer, value);}...}}}// Set light positionsprintf(buffer, "LIGHT_POSITIONS[%i]", i);context->setUniform(buffer, 3, 1, lightPos.coord);6. Example 4-57 shows the world, view, and project calculation and scene traversal:Example 4-57 Traversing the scene...}mat4 world = mat4::identity();mat4 view = mat4::lookAt( camPos, camTarget, vec3(0.0f, 0.0f, 1.0f) );mat4 proj = mat4::perspective(camFov, camAspect, 1.0f, 1000.0f);mat4 prjViw = proj*view;//context->setUniformMatrix("WORLD", world);//context->setUniformMatrix("PRJ_VIW_WRL", prjViw*world);//context->setUniformMatrix("PROJECTION", 4, 1, proj);traverse(scene->getTree(0), context, prjViw, world, time);}while (context->update());}catch(Exception& e){printf("An exception was thrown:\n%s\n", e.getMessage().getCharString() );}7. Rebuild the project and run it. Figure 4-22 shows the shape:Figure 4-22 The advanced mba shape with tree traversalThe asset contains:• all of the shaders• the environment bitmapsARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 4-45ID070710Non-Confidential - Draft - Beta