[2642] | 1 | // occquery.cpp : Defines the entry point for the console application.
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| 2 | //
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[2746] | 3 | #include <math.h>
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| 4 | #include <time.h>
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[2756] | 5 | #include "common.h"
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[2642] | 6 | #include "glInterface.h"
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| 7 | #include "RenderTraverser.h"
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[2756] | 8 | #include "SceneEntity.h"
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| 9 | #include "Vector3.h"
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| 10 | #include "Matrix4x4.h"
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[2795] | 11 | #include "ResourceManager.h"
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[2756] | 12 | #include "Bvh.h"
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| 13 | #include "Camera.h"
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| 14 | #include "Geometry.h"
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[2760] | 15 | #include "BvhLoader.h"
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| 16 | #include "FrustumCullingTraverser.h"
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[2763] | 17 | #include "StopAndWaitTraverser.h"
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[2764] | 18 | #include "CHCTraverser.h"
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[2767] | 19 | #include "CHCPlusPlusTraverser.h"
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| 20 | #include "Visualization.h"
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[2769] | 21 | #include "RenderState.h"
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[2795] | 22 | #include "Timer/PerfTimer.h"
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[2796] | 23 | #include "SceneQuery.h"
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[2801] | 24 | #include "RenderQueue.h"
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[2808] | 25 | #include <Cg/cg.h>
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| 26 | #include <Cg/cgGL.h>
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[2642] | 27 |
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| 28 |
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[2809] | 29 |
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[2756] | 30 | using namespace std;
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[2776] | 31 | using namespace CHCDemoEngine;
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[2642] | 32 |
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| 33 |
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[2809] | 34 | GLuint fbo;
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[2756] | 35 |
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[2810] | 36 | GLuint depthBuffer;
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[2809] | 37 |
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[2810] | 38 | GLuint positionsBuffer;
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| 39 | GLuint colorsBuffer;
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| 40 | GLuint normalsBuffer;
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[2809] | 41 |
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[2810] | 42 | GLuint positionsTex;
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| 43 | GLuint colorsTex;
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| 44 | GLuint normalsTex;
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[2809] | 45 |
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[2810] | 46 | GLuint noiseTex;
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| 47 |
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| 48 |
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[2756] | 49 | /// the renderable scene geometry
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| 50 | SceneEntityContainer sceneEntities;
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| 51 | // traverses and renders the hierarchy
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[2767] | 52 | RenderTraverser *traverser = NULL;
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[2756] | 53 | /// the hierarchy
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[2767] | 54 | Bvh *bvh = NULL;
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[2793] | 55 | /// handles scene loading
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[2795] | 56 | ResourceManager *loader = NULL;
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[2756] | 57 | /// the scene camera
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[2767] | 58 | Camera *camera = NULL;
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[2795] | 59 | /// the scene camera
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| 60 | Camera *visCamera = NULL;
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[2767] | 61 | /// the visualization
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| 62 | Visualization *visualization = NULL;
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[2760] | 63 | /// the current render state
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| 64 | RenderState state;
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[2764] | 65 | /// the rendering algorithm
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[2795] | 66 | int renderMode = RenderTraverser::CHCPLUSPLUS;
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[2756] | 67 | // eye near plane distance
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[2816] | 68 | float nearDist = 1.0f;
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[2771] | 69 | /// the pixel threshold where a node is still considered invisible
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| 70 | int threshold;
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[2764] | 71 |
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[2795] | 72 | float fov = 50.0f;
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| 73 |
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[2776] | 74 | int assumedVisibleFrames = 10;
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| 75 | int maxBatchSize = 50;
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[2771] | 76 |
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[2800] | 77 | int trianglesPerVirtualLeaf = INITIAL_TRIANGLES_PER_VIRTUAL_LEAVES;
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[2767] | 78 |
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[2796] | 79 | SceneQuery *sceneQuery = NULL;
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[2801] | 80 | RenderQueue *renderQueue = NULL;
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[2796] | 81 |
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[2809] | 82 | /// these values get scaled with the frame rate
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| 83 | const static float keyForwardMotion = 50.0f;
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| 84 | const static float keyRotation = 2.0f;
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[2801] | 85 |
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[2795] | 86 | /// elapsed time in seconds
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| 87 | double elapsedTime = 1.0f;
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[2801] | 88 | double algTime = 1.0f;
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[2795] | 89 |
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[2809] | 90 | static int winWidth = 1024;
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[2813] | 91 | static int winHeight = 768;
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[2809] | 92 | static float winAspectRatio = 1.0f;
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[2642] | 93 |
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[2776] | 94 | double accumulatedTime = 1000;
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[2770] | 95 | float fps = 1e3f;
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| 96 |
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[2809] | 97 | float myfar = 0;
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| 98 |
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| 99 | // rendertexture
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[2814] | 100 | const static int texWidth = 1024;
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| 101 | const static int texHeight = 768;
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| 102 | //const static int texWidth = 2048;
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| 103 | //const static int texHeight = 2048;
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[2809] | 104 |
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[2770] | 105 | int renderedObjects = 0;
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[2773] | 106 | int renderedNodes = 0;
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| 107 | int renderedTriangles = 0;
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| 108 |
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[2770] | 109 | int issuedQueries = 0;
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| 110 | int traversedNodes = 0;
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| 111 | int frustumCulledNodes = 0;
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| 112 | int queryCulledNodes = 0;
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| 113 | int stateChanges = 0;
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[2800] | 114 | int numBatches = 0;
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[2770] | 115 |
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[2642] | 116 | bool showHelp = false;
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| 117 | bool showStatistics = true;
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[2790] | 118 | bool showOptions = true;
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[2642] | 119 | bool showBoundingVolumes = false;
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| 120 | bool visMode = false;
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| 121 |
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[2792] | 122 | // mouse navigation state
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[2809] | 123 | int xEyeBegin = 0;
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| 124 | int yEyeBegin = 0;
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| 125 | int yMotionBegin = 0;
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| 126 | int verticalMotionBegin = 0;
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| 127 | int horizontalMotionBegin = 0;
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[2642] | 128 |
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[2770] | 129 | bool useOptimization = false;
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[2786] | 130 | bool useTightBounds = true;
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[2795] | 131 | bool useRenderQueue = true;
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[2786] | 132 | bool useMultiQueries = true;
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[2800] | 133 | bool flyMode = true;
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[2801] | 134 | bool depthPass = false;
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[2803] | 135 | bool useGlFinish = false;
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[2800] | 136 |
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[2795] | 137 | SceneEntityContainer skyGeometry;
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| 138 |
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[2792] | 139 | bool leftKeyPressed = false;
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| 140 | bool rightKeyPressed = false;
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| 141 | bool upKeyPressed = false;
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| 142 | bool downKeyPressed = false;
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[2794] | 143 | bool nineKeyPressed = false;
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| 144 | bool eightKeyPressed = false;
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[2787] | 145 |
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[2794] | 146 |
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[2809] | 147 | static Vector3 samples[32];
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[2817] | 148 | GLubyte *randomNormals;
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[2809] | 149 |
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| 150 | // function forward declarations
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[2759] | 151 | void InitExtensions();
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[2756] | 152 | void DisplayVisualization();
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[2759] | 153 | void InitGLstate();
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[2809] | 154 | void InitRenderTexture();
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| 155 | void InitCg();
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[2759] | 156 | void CleanUp();
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| 157 | void SetupEyeView();
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| 158 | void UpdateEyeMtx();
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| 159 | void SetupLighting();
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[2764] | 160 | void DisplayStats();
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[2769] | 161 | void Output(int x, int y, const char *string);
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[2786] | 162 | void DrawHelpMessage();
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[2796] | 163 | void RenderSky();
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[2801] | 164 | void RenderVisibleObjects();
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[2756] | 165 |
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[2792] | 166 | void Begin2D();
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| 167 | void End2D();
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| 168 | void KeyBoard(unsigned char c, int x, int y);
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| 169 | void DrawStatistics();
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| 170 | void Display();
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| 171 | void Special(int c, int x, int y);
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| 172 | void KeyUp(unsigned char c, int x, int y);
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| 173 | void SpecialKeyUp(int c, int x, int y);
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| 174 | void Reshape(int w, int h);
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| 175 | void Mouse(int button, int state, int x, int y);
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| 176 | void LeftMotion(int x, int y);
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| 177 | void RightMotion(int x, int y);
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| 178 | void MiddleMotion(int x, int y);
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| 179 | void CalcDecimalPoint(string &str, int d);
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[2764] | 180 | void ResetTraverser();
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[2642] | 181 |
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[2792] | 182 | void KeyHorizontalMotion(float shift);
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[2794] | 183 | void KeyVerticalMotion(float shift);
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[2642] | 184 |
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[2801] | 185 | void PlaceViewer(const Vector3 &oldPos);
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[2809] | 186 | void DisplayRenderTexture();
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[2642] | 187 |
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[2801] | 188 |
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[2795] | 189 | inline float KeyRotationAngle() { return keyRotation * elapsedTime; }
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| 190 | inline float KeyShift() { return keyForwardMotion * elapsedTime; }
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[2792] | 191 |
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[2809] | 192 | void InitFBO();
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[2795] | 193 |
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[2809] | 194 | void GenerateSamples();
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| 195 |
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[2810] | 196 | void CreateNoiseTex2D();
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| 197 |
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[2809] | 198 | void ComputeViewVectors(Vector3 &tl, Vector3 &tr, Vector3 &bl, Vector3 &br);
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| 199 |
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[2810] | 200 | GLenum mrt[] = {GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_COLOR_ATTACHMENT2_EXT};
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[2809] | 201 |
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| 202 |
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[2810] | 203 | /////////
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| 204 | //-- cg stuff
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| 205 |
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[2808] | 206 | static CGcontext sCgContext = NULL;
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[2810] | 207 | static CGprogram sCgMrtVertexProgram = NULL;
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[2809] | 208 | static CGprogram sCgSSAOProgram = NULL;
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[2810] | 209 | static CGprogram sCgMrtFragmentProgram = NULL;
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[2795] | 210 |
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[2808] | 211 | static CGprofile sCgFragmentProfile;
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[2809] | 212 | static CGprofile sCgVertexProfile;
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| 213 |
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[2810] | 214 | static CGparameter sColorsTexParam;
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| 215 | static CGparameter sPositionsTexParam;
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| 216 | static CGparameter sNormalsTexParam;
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| 217 | static CGparameter sNoiseTexParam;
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[2808] | 218 |
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[2810] | 219 | /*static CGparameter sTexSizeParam;
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[2809] | 220 | static CGparameter sSamplesParam;
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| 221 | static CGparameter sEyeVecParam;
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| 222 | static CGparameter sRadiusParam;
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[2810] | 223 | */
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| 224 | static CGparameter sProjectionMatrixParam;
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[2809] | 225 | static CGparameter sModelViewMatrixParam;
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| 226 | static CGparameter sMaxDepthParam;
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[2808] | 227 |
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[2809] | 228 | const static float radius = 1e-3f;
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| 229 |
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| 230 |
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| 231 | static void cgErrorCallback()
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| 232 | {
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| 233 | CGerror lastError = cgGetError();
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| 234 |
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| 235 | if(lastError)
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| 236 | {
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| 237 | printf("%s\n\n", cgGetErrorString(lastError));
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| 238 | printf("%s\n", cgGetLastListing(sCgContext));
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| 239 | printf("Cg error, exiting...\n");
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| 240 |
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| 241 | exit(0);
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| 242 | }
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| 243 | }
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| 244 |
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| 245 |
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| 246 | static void PrintGLerror(char *msg)
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| 247 | {
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| 248 | GLenum errCode;
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| 249 | const GLubyte *errStr;
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| 250 |
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| 251 | if ((errCode = glGetError()) != GL_NO_ERROR)
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| 252 | {
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| 253 | errStr = gluErrorString(errCode);
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| 254 | fprintf(stderr,"OpenGL ERROR: %s: %s\n", errStr, msg);
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| 255 | }
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| 256 | }
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| 257 |
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| 258 |
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[2642] | 259 | int main(int argc, char* argv[])
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| 260 | {
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[2781] | 261 | int returnCode = 0;
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| 262 |
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[2795] | 263 | camera = new Camera(winWidth, winHeight, fov);
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| 264 | camera->SetNear(nearDist);
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[2806] | 265 |
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| 266 | visCamera = new Camera(winWidth, winHeight, fov);
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[2781] | 267 |
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[2796] | 268 | visCamera->SetNear(0.0f);
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| 269 | visCamera->Yaw(.5 * M_PI);
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[2781] | 270 |
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[2802] | 271 | renderQueue = new RenderQueue(&state, camera);
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[2801] | 272 |
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[2760] | 273 | glutInitWindowSize(winWidth, winHeight);
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[2756] | 274 | glutInit(&argc, argv);
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[2642] | 275 | glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH);
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[2756] | 276 |
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[2795] | 277 | glutCreateWindow("FriendlyCulling");
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[2642] | 278 |
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[2792] | 279 | glutDisplayFunc(Display);
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| 280 | glutKeyboardFunc(KeyBoard);
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| 281 | glutSpecialFunc(Special);
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| 282 | glutReshapeFunc(Reshape);
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| 283 | glutMouseFunc(Mouse);
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| 284 | glutIdleFunc(Display);
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| 285 | glutKeyboardUpFunc(KeyUp);
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| 286 | glutSpecialUpFunc(SpecialKeyUp);
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| 287 | glutIgnoreKeyRepeat(true);
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| 288 |
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[2756] | 289 | InitExtensions();
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| 290 | InitGLstate();
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[2810] | 291 |
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[2809] | 292 | //InitRenderTexture();
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| 293 | InitFBO();
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[2810] | 294 |
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[2792] | 295 | LeftMotion(0, 0);
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| 296 | MiddleMotion(0, 0);
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[2756] | 297 |
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| 298 |
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[2795] | 299 | loader = new ResourceManager();
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[2793] | 300 |
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[2784] | 301 | //const string filename("data/city/model/city.dem");
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| 302 | const string filename = string(model_path + "city.dem");
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[2756] | 303 |
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[2793] | 304 | if (loader->Load(filename, sceneEntities))
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[2756] | 305 | cout << "scene " << filename << " loaded" << endl;
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| 306 | else
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[2784] | 307 | {
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[2756] | 308 | cerr << "loading scene " << filename << " failed" << endl;
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[2792] | 309 | CleanUp();
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[2784] | 310 | exit(0);
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| 311 | }
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[2756] | 312 |
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[2795] | 313 | SceneEntityContainer dummy;
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| 314 |
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| 315 | const string envname = string(model_path + "env.dem");
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| 316 |
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| 317 | if (loader->Load(envname, skyGeometry))
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| 318 | cout << "sky box " << filename << " loaded" << endl;
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| 319 | else
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| 320 | {
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| 321 | cerr << "loading sky box " << filename << " failed" << endl;
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| 322 | CleanUp();
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| 323 | exit(0);
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| 324 | }
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| 325 |
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[2810] | 326 | // create noise texture for ssao
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| 327 | CreateNoiseTex2D();
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[2795] | 328 |
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[2810] | 329 |
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[2784] | 330 | const string bvh_filename = string(model_path + "city.bvh");
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[2760] | 331 | BvhLoader bvhLoader;
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[2784] | 332 | bvh = bvhLoader.Load(bvh_filename, sceneEntities);
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| 333 | //bvh = bvhLoader.Load("data/city/model/city.bvh", sceneEntities);
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[2762] | 334 |
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[2811] | 335 | myfar = 1.0f * Magnitude(bvh->GetBox().Diagonal());
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[2809] | 336 |
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[2784] | 337 | if (!bvh)
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| 338 | {
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| 339 | cerr << "loading bvh " << bvh_filename << " failed" << endl;
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[2792] | 340 | CleanUp();
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[2784] | 341 | exit(0);
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| 342 | }
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| 343 |
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[2809] | 344 | InitCg();
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[2806] | 345 |
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[2771] | 346 | bvh->SetCamera(camera);
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[2796] | 347 |
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[2764] | 348 | ResetTraverser();
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[2756] | 349 |
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[2795] | 350 | camera->Pitch(-M_PI * 0.5);
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[2767] | 351 | camera->SetPosition(Vector3(483.398f, 242.364f, 186.078f));
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[2642] | 352 |
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[2787] | 353 | visualization = new Visualization(bvh, camera, NULL, &state);
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| 354 |
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[2800] | 355 | sceneQuery = new SceneQuery(bvh->GetBox(), traverser);
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[2796] | 356 |
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[2800] | 357 |
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[2642] | 358 | glutMainLoop();
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| 359 |
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| 360 | // clean up
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[2756] | 361 | CleanUp();
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| 362 |
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[2642] | 363 | return 0;
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| 364 | }
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| 365 |
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[2756] | 366 |
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[2809] | 367 | void InitCg(void)
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| 368 | {
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| 369 | GenerateSamples();
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| 370 |
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| 371 | // Setup Cg
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| 372 | cgSetErrorCallback(cgErrorCallback);
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| 373 |
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| 374 | // Create cgContext.
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| 375 | sCgContext = cgCreateContext();
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| 376 |
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| 377 | // get the best profile for this hardware
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| 378 | sCgFragmentProfile = cgGLGetLatestProfile(CG_GL_FRAGMENT);
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| 379 | //assert(sCgFragmentProfile != CG_PROFILE_UNKNOWN);
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| 380 | cgGLSetOptimalOptions(sCgFragmentProfile);
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| 381 |
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| 382 | sCgVertexProfile = cgGLGetLatestProfile(CG_GL_VERTEX);
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| 383 | cgGLSetOptimalOptions(sCgVertexProfile);
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| 384 |
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[2810] | 385 | sCgMrtVertexProgram =
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[2809] | 386 | cgCreateProgramFromFile(sCgContext,
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| 387 | CG_SOURCE,
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[2810] | 388 | "src/shaders/mrt.cg",
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[2809] | 389 | sCgVertexProfile,
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[2810] | 390 | "vtx",
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[2809] | 391 | NULL);
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| 392 |
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[2810] | 393 | if(sCgMrtVertexProgram != NULL)
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[2809] | 394 | {
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[2810] | 395 | cgGLLoadProgram(sCgMrtVertexProgram);
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[2809] | 396 |
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[2810] | 397 | sModelViewMatrixParam = cgGetNamedParameter(sCgMrtVertexProgram, "ModelViewProj");
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[2809] | 398 | }
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| 399 |
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[2810] | 400 | sCgMrtFragmentProgram =
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[2809] | 401 | cgCreateProgramFromFile(sCgContext,
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| 402 | CG_SOURCE,
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[2810] | 403 | "src/shaders/mrt.cg",
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[2809] | 404 | sCgFragmentProfile,
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[2810] | 405 | "frag",
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[2809] | 406 | NULL);
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| 407 |
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[2810] | 408 | if(sCgMrtFragmentProgram != NULL)
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[2809] | 409 | {
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[2810] | 410 | cgGLLoadProgram(sCgMrtFragmentProgram);
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[2809] | 411 |
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[2810] | 412 | sMaxDepthParam = cgGetNamedParameter(sCgMrtFragmentProgram, "maxDepth");
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[2809] | 413 | cgGLSetParameter1f(sMaxDepthParam, 1.0f / myfar);
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| 414 | }
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| 415 | else
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| 416 | cerr << "test program failed to load" << endl;
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| 417 |
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| 418 | PrintGLerror("test");
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| 419 |
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| 420 |
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| 421 | ///////////////
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| 422 |
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| 423 | sCgSSAOProgram =
|
---|
| 424 | cgCreateProgramFromFile(sCgContext,
|
---|
| 425 | CG_SOURCE,
|
---|
[2810] | 426 | "src/shaders/deferred.cg",
|
---|
[2809] | 427 | //"src/test.cg",
|
---|
| 428 | sCgFragmentProfile,
|
---|
| 429 | NULL,
|
---|
| 430 | NULL);
|
---|
| 431 |
|
---|
| 432 | if(sCgSSAOProgram != NULL)
|
---|
| 433 | {
|
---|
| 434 | cgGLLoadProgram(sCgSSAOProgram);
|
---|
| 435 |
|
---|
| 436 | // we need size of texture for scaling
|
---|
[2810] | 437 | sPositionsTexParam = cgGetNamedParameter(sCgSSAOProgram, "positions");
|
---|
| 438 | sColorsTexParam = cgGetNamedParameter(sCgSSAOProgram, "colors");
|
---|
| 439 | sNormalsTexParam = cgGetNamedParameter(sCgSSAOProgram, "normals");
|
---|
| 440 | sNoiseTexParam = cgGetNamedParameter(sCgSSAOProgram, "noiseTexture");
|
---|
| 441 |
|
---|
| 442 | sProjectionMatrixParam = cgGetNamedParameter(sCgSSAOProgram, "ProjTrafo");
|
---|
| 443 |
|
---|
| 444 | /*sTexSizeParam = cgGetNamedParameter(sCgSSAOProgram, "invTexSize");
|
---|
[2809] | 445 | sRadiusParam = cgGetNamedParameter(sCgSSAOProgram, "radius");
|
---|
| 446 | sEyeVecParam = cgGetNamedParameter(sCgSSAOProgram, "eyevec");
|
---|
| 447 | sSamplesParam = cgGetNamedParameter(sCgSSAOProgram, "samples");
|
---|
| 448 |
|
---|
| 449 | cgGLSetParameter1f(sTexSizeParam, 1.0f / (float)texWidth);
|
---|
| 450 | cgGLSetParameter1f(sRadiusParam, radius);
|
---|
[2810] | 451 | cgGLSetParameterArray3f(sSamplesParam, 0, 32, (const float *)samples);*/
|
---|
[2809] | 452 | }
|
---|
| 453 | else
|
---|
| 454 | cerr << "ssao program failed to load" << endl;
|
---|
| 455 |
|
---|
| 456 | PrintGLerror("init");
|
---|
| 457 | }
|
---|
| 458 |
|
---|
| 459 |
|
---|
| 460 | void PrintFBOStatus(GLenum status)
|
---|
| 461 | {
|
---|
| 462 | switch(status)
|
---|
| 463 | {
|
---|
| 464 | case GL_FRAMEBUFFER_COMPLETE_EXT:
|
---|
| 465 | cout << "frame buffer object created successfully" << endl;
|
---|
| 466 | break;
|
---|
| 467 | case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT:
|
---|
| 468 | cerr << "incomplete attachment" << endl;
|
---|
| 469 | break;
|
---|
| 470 | case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT:
|
---|
| 471 | cerr << "missing attachment" << endl;
|
---|
| 472 | break;
|
---|
| 473 | case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT:
|
---|
| 474 | cerr << "incomplete dimensions" << endl;
|
---|
| 475 | break;
|
---|
| 476 | case GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT:
|
---|
| 477 | cerr << "incomplete formats" << endl;
|
---|
| 478 | break;
|
---|
| 479 | case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT:
|
---|
| 480 | cerr << "incomplete draw buffer" << endl;
|
---|
| 481 | break;
|
---|
| 482 | case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT:
|
---|
| 483 | cerr << "incomplete read buffer" << endl;
|
---|
| 484 | break;
|
---|
| 485 | case GL_FRAMEBUFFER_UNSUPPORTED_EXT:
|
---|
| 486 | cerr << "framebuffer unsupported" << endl;
|
---|
| 487 | break;
|
---|
| 488 | default:
|
---|
| 489 | cerr << "unknown status code " << status << endl;
|
---|
| 490 | }
|
---|
| 491 | }
|
---|
| 492 |
|
---|
| 493 |
|
---|
| 494 | void InitFBO()
|
---|
[2810] | 495 | {
|
---|
[2809] | 496 | glGenFramebuffersEXT(1, &fbo);
|
---|
| 497 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
|
---|
| 498 |
|
---|
[2810] | 499 | //////////
|
---|
| 500 | //-- positions buffer
|
---|
| 501 |
|
---|
[2809] | 502 | int samples = 8;
|
---|
| 503 |
|
---|
[2810] | 504 | ////////////
|
---|
| 505 | //-- colors buffer
|
---|
[2809] | 506 |
|
---|
[2810] | 507 | glGenRenderbuffersEXT(1, &colorsBuffer);
|
---|
| 508 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, colorsBuffer);
|
---|
[2813] | 509 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA32F_ARB, texWidth, texHeight);
|
---|
[2810] | 510 |
|
---|
| 511 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, colorsBuffer);
|
---|
| 512 |
|
---|
| 513 | glGenTextures(1, &colorsTex);
|
---|
| 514 | glBindTexture(GL_TEXTURE_2D, colorsTex);
|
---|
| 515 |
|
---|
[2813] | 516 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, texWidth, texHeight, 0, GL_RGBA, GL_FLOAT, NULL);
|
---|
[2809] | 517 | glGenerateMipmapEXT(GL_TEXTURE_2D);
|
---|
[2810] | 518 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, colorsTex, 0);
|
---|
[2809] | 519 |
|
---|
| 520 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
---|
| 521 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
|
---|
| 522 |
|
---|
| 523 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
---|
| 524 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
---|
| 525 |
|
---|
| 526 | PrintFBOStatus(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
|
---|
[2810] | 527 | glGenRenderbuffersEXT(1, &positionsBuffer);
|
---|
| 528 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, positionsBuffer);
|
---|
[2817] | 529 | //glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA32F_ARB, texWidth, texHeight);
|
---|
| 530 | glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples, GL_RGBA32F_ARB, texWidth, texHeight);
|
---|
[2810] | 531 |
|
---|
| 532 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_RENDERBUFFER_EXT, positionsBuffer);
|
---|
[2809] | 533 |
|
---|
[2810] | 534 | glGenTextures(1, &positionsTex);
|
---|
| 535 | glBindTexture(GL_TEXTURE_2D, positionsTex);
|
---|
[2813] | 536 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, texWidth, texHeight, 0, GL_RGBA, GL_FLOAT, NULL);
|
---|
[2817] | 537 | //glGenerateMipmapEXT(GL_TEXTURE_2D);
|
---|
[2810] | 538 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_2D, positionsTex, 0);
|
---|
[2809] | 539 |
|
---|
[2817] | 540 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
| 541 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
[2809] | 542 |
|
---|
[2817] | 543 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
---|
| 544 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
---|
[2810] | 545 |
|
---|
| 546 | PrintFBOStatus(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
|
---|
| 547 |
|
---|
| 548 |
|
---|
| 549 | ////////
|
---|
| 550 | //-- normals buffer
|
---|
| 551 |
|
---|
| 552 | glGenRenderbuffersEXT(1, &normalsBuffer);
|
---|
| 553 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, normalsBuffer);
|
---|
[2813] | 554 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA32F_ARB, texWidth, texHeight);
|
---|
[2810] | 555 |
|
---|
| 556 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_RENDERBUFFER_EXT, normalsBuffer);
|
---|
| 557 |
|
---|
| 558 | glGenTextures(1, &normalsTex);
|
---|
| 559 | glBindTexture(GL_TEXTURE_2D, normalsTex);
|
---|
[2813] | 560 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, texWidth, texHeight, 0, GL_RGBA, GL_FLOAT, NULL);
|
---|
[2817] | 561 | //glGenerateMipmapEXT(GL_TEXTURE_2D);
|
---|
[2810] | 562 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_TEXTURE_2D, normalsTex, 0);
|
---|
| 563 |
|
---|
[2817] | 564 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
| 565 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
[2810] | 566 |
|
---|
[2809] | 567 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
---|
| 568 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
---|
| 569 |
|
---|
| 570 | PrintFBOStatus(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
|
---|
| 571 |
|
---|
[2810] | 572 |
|
---|
[2809] | 573 | ///////////
|
---|
[2810] | 574 | //-- create depth buffer
|
---|
[2809] | 575 |
|
---|
[2810] | 576 | glGenRenderbuffersEXT(1, &depthBuffer);
|
---|
| 577 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthBuffer);
|
---|
[2815] | 578 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, texWidth, texHeight);
|
---|
[2810] | 579 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, depthBuffer);
|
---|
[2809] | 580 |
|
---|
| 581 |
|
---|
| 582 | PrintFBOStatus(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
|
---|
| 583 |
|
---|
| 584 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
|
---|
| 585 |
|
---|
| 586 |
|
---|
| 587 | ////////////////
|
---|
| 588 | //-- second fbo
|
---|
| 589 |
|
---|
| 590 | /*glGenFramebuffersEXT(1, &fbo2);
|
---|
| 591 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo2);
|
---|
| 592 |
|
---|
| 593 | // create color buffer
|
---|
| 594 | glGenRenderbuffersEXT(1, &occlusionbuffer);
|
---|
[2813] | 595 | //glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA32F_ARB, texWidth, texHeight);
|
---|
[2809] | 596 | glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples, GL_FLOAT_RGBA_NV, texWidth2, texHeight2);
|
---|
| 597 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, occlusionbuffer);
|
---|
| 598 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, occlusionbuffer);
|
---|
| 599 |
|
---|
| 600 | glGenTextures(1, &occlusionTex);
|
---|
| 601 | glBindTexture(GL_TEXTURE_2D, occlusionTex);
|
---|
[2813] | 602 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, texWidth2, texHeight2, 0, GL_RGBA, GL_FLOAT, NULL);
|
---|
[2809] | 603 | glGenerateMipmapEXT(GL_TEXTURE_2D);
|
---|
| 604 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, colorTex, 0);
|
---|
| 605 |
|
---|
| 606 | PrintFBOStatus(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
|
---|
| 607 |
|
---|
| 608 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);*/
|
---|
[2810] | 609 | PrintGLerror("fbo");
|
---|
[2809] | 610 | }
|
---|
| 611 |
|
---|
| 612 |
|
---|
[2756] | 613 | void InitGLstate(void)
|
---|
[2642] | 614 | {
|
---|
[2767] | 615 | glClearColor(0.5f, 0.5f, 0.8f, 0.0f);
|
---|
[2642] | 616 |
|
---|
| 617 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
---|
| 618 | glPixelStorei(GL_PACK_ALIGNMENT,1);
|
---|
| 619 |
|
---|
| 620 | glDepthFunc(GL_LESS);
|
---|
[2762] | 621 | glEnable(GL_DEPTH_TEST);
|
---|
[2642] | 622 |
|
---|
[2759] | 623 | SetupLighting();
|
---|
[2642] | 624 |
|
---|
[2760] | 625 | glColor3f(1.0f, 1.0f, 1.0f);
|
---|
[2642] | 626 | glShadeModel(GL_SMOOTH);
|
---|
| 627 |
|
---|
| 628 | glMaterialf(GL_FRONT, GL_SHININESS, 64);
|
---|
| 629 | glEnable(GL_NORMALIZE);
|
---|
[2767] | 630 |
|
---|
| 631 | //glEnable(GL_ALPHA_TEST);
|
---|
| 632 | glDisable(GL_ALPHA_TEST);
|
---|
[2801] | 633 | glAlphaFunc(GL_GEQUAL, 0.5f);
|
---|
[2767] | 634 |
|
---|
[2642] | 635 | glFrontFace(GL_CCW);
|
---|
| 636 | glCullFace(GL_BACK);
|
---|
| 637 | glEnable(GL_CULL_FACE);
|
---|
[2756] | 638 | //glDisable(GL_CULL_FACE);
|
---|
[2800] | 639 | glDisable(GL_TEXTURE_2D);
|
---|
[2762] | 640 |
|
---|
[2756] | 641 | GLfloat ambientColor[] = {0.5, 0.5, 0.5, 1.0};
|
---|
| 642 | GLfloat diffuseColor[] = {1.0, 0.0, 0.0, 1.0};
|
---|
[2759] | 643 | GLfloat specularColor[] = {0.0, 0.0, 0.0, 1.0};
|
---|
[2642] | 644 |
|
---|
[2756] | 645 | glMaterialfv(GL_FRONT, GL_AMBIENT, ambientColor);
|
---|
| 646 | glMaterialfv(GL_FRONT, GL_DIFFUSE, diffuseColor);
|
---|
| 647 | glMaterialfv(GL_FRONT, GL_SPECULAR, specularColor);
|
---|
[2801] | 648 |
|
---|
| 649 | glDepthFunc(GL_LESS);
|
---|
[2642] | 650 | }
|
---|
| 651 |
|
---|
| 652 |
|
---|
[2786] | 653 | void DrawHelpMessage(void)
|
---|
[2642] | 654 | {
|
---|
| 655 | const char *message[] =
|
---|
| 656 | {
|
---|
| 657 | "Help information",
|
---|
| 658 | "",
|
---|
| 659 | "'F1' - shows/dismisses this message",
|
---|
[2795] | 660 | "'F2' - shows/hides bird eye view",
|
---|
[2790] | 661 | "'F3' - shows/hides bounds (boxes or tight bounds)",
|
---|
[2795] | 662 | "'F4' - shows/hides statistics",
|
---|
[2808] | 663 | "'F5', - shows/hides parameters",
|
---|
| 664 | "'F6', - toggles between fly / walkmode",
|
---|
[2801] | 665 | "'F7', - depth pass",
|
---|
[2803] | 666 | "'F8', - enable/disable glFinish for more accurate timings",
|
---|
[2790] | 667 | "'SPACE' - cycles through occlusion culling algorithms",
|
---|
[2642] | 668 | "",
|
---|
| 669 | "'MOUSE-LEFT' - turn left/right, move forward/backward",
|
---|
| 670 | "'MOUSE-RIGHT' - turn left/right, move forward/backward",
|
---|
| 671 | "'MOUSE-MIDDLE' - move up/down, left/right",
|
---|
| 672 | "'CURSOR UP' - move forward",
|
---|
| 673 | "'CURSOR BACK' - move backward",
|
---|
| 674 | "'CURSOR RIGHT' - turn right",
|
---|
| 675 | "'CURSOR LEFT' - turn left",
|
---|
| 676 | "",
|
---|
[2776] | 677 | "'-' - decreases max batch size",
|
---|
| 678 | "'+' - increases max batch size",
|
---|
[2795] | 679 | "'4' - decrease triangles per virtual leaf (sets depth of bvh)",
|
---|
| 680 | "'5' - increase triangles per virtual leaf (sets depth of bvh)",
|
---|
[2776] | 681 | "'6' - decrease assumed visible frames",
|
---|
| 682 | "'7' - increase assumed visible frames",
|
---|
[2795] | 683 | "'8' - downward motion",
|
---|
| 684 | "'9' - upward motion",
|
---|
[2776] | 685 | "",
|
---|
[2786] | 686 | "'R' - use render queue",
|
---|
[2790] | 687 | "'B' - use tight bounds",
|
---|
| 688 | "'M' - use multiqueries",
|
---|
[2792] | 689 | "'O' - use CHC optimization (geometry queries for leaves)",
|
---|
[2642] | 690 | 0,
|
---|
| 691 | };
|
---|
| 692 |
|
---|
[2756] | 693 |
|
---|
[2786] | 694 | int x = 40, y = 60;
|
---|
[2756] | 695 |
|
---|
[2642] | 696 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
---|
| 697 | glEnable(GL_BLEND);
|
---|
[2756] | 698 | glColor4f(0.0f, 1.0f , 0.0f, 0.2f); // 20% green.
|
---|
[2642] | 699 |
|
---|
| 700 | // Drawn clockwise because the flipped Y axis flips CCW and CW.
|
---|
| 701 | glRecti(winWidth - 30, 30, 30, winHeight - 30);
|
---|
| 702 |
|
---|
| 703 | glDisable(GL_BLEND);
|
---|
| 704 |
|
---|
[2756] | 705 | glColor3f(1.0f, 1.0f, 1.0f);
|
---|
| 706 |
|
---|
| 707 | for(int i = 0; message[i] != 0; i++)
|
---|
| 708 | {
|
---|
| 709 | if(message[i][0] == '\0')
|
---|
| 710 | {
|
---|
[2786] | 711 | y += 15;
|
---|
[2756] | 712 | }
|
---|
| 713 | else
|
---|
| 714 | {
|
---|
[2769] | 715 | Output(x, y, message[i]);
|
---|
[2786] | 716 | y += 20;
|
---|
[2642] | 717 | }
|
---|
| 718 | }
|
---|
| 719 | }
|
---|
| 720 |
|
---|
| 721 |
|
---|
[2764] | 722 | void ResetTraverser()
|
---|
| 723 | {
|
---|
| 724 | DEL_PTR(traverser);
|
---|
| 725 |
|
---|
[2771] | 726 | bvh->ResetNodeClassifications();
|
---|
| 727 |
|
---|
[2764] | 728 | switch (renderMode)
|
---|
| 729 | {
|
---|
| 730 | case RenderTraverser::CULL_FRUSTUM:
|
---|
| 731 | traverser = new FrustumCullingTraverser();
|
---|
| 732 | break;
|
---|
| 733 | case RenderTraverser::STOP_AND_WAIT:
|
---|
| 734 | traverser = new StopAndWaitTraverser();
|
---|
| 735 | break;
|
---|
| 736 | case RenderTraverser::CHC:
|
---|
| 737 | traverser = new CHCTraverser();
|
---|
| 738 | break;
|
---|
[2767] | 739 | case RenderTraverser::CHCPLUSPLUS:
|
---|
| 740 | traverser = new CHCPlusPlusTraverser();
|
---|
| 741 | break;
|
---|
| 742 |
|
---|
[2764] | 743 | default:
|
---|
| 744 | traverser = new FrustumCullingTraverser();
|
---|
| 745 | }
|
---|
| 746 |
|
---|
[2767] | 747 | traverser->SetCamera(camera);
|
---|
[2764] | 748 | traverser->SetHierarchy(bvh);
|
---|
[2801] | 749 | traverser->SetRenderQueue(renderQueue);
|
---|
[2764] | 750 | traverser->SetRenderState(&state);
|
---|
[2770] | 751 | traverser->SetUseOptimization(useOptimization);
|
---|
| 752 | traverser->SetUseRenderQueue(useRenderQueue);
|
---|
| 753 | traverser->SetVisibilityThreshold(threshold);
|
---|
[2776] | 754 | traverser->SetAssumedVisibleFrames(assumedVisibleFrames);
|
---|
| 755 | traverser->SetMaxBatchSize(maxBatchSize);
|
---|
| 756 | traverser->SetUseMultiQueries(useMultiQueries);
|
---|
[2786] | 757 | traverser->SetUseTightBounds(useTightBounds);
|
---|
[2801] | 758 | traverser->SetUseDepthPass(depthPass);
|
---|
| 759 | traverser->SetRenderQueue(renderQueue);
|
---|
[2764] | 760 | }
|
---|
| 761 |
|
---|
| 762 |
|
---|
[2759] | 763 | void SetupLighting()
|
---|
[2642] | 764 | {
|
---|
[2759] | 765 | glEnable(GL_LIGHTING);
|
---|
| 766 | glEnable(GL_LIGHT0);
|
---|
[2800] | 767 | //glEnable(GL_LIGHT1);
|
---|
| 768 | glDisable(GL_LIGHT1);
|
---|
[2767] | 769 |
|
---|
[2759] | 770 | //GLfloat ambient[] = {0.5, 0.5, 0.5, 1.0};
|
---|
| 771 | GLfloat ambient[] = {0.2, 0.2, 0.2, 1.0};
|
---|
| 772 | GLfloat diffuse[] = {1.0, 1.0, 1.0, 1.0};
|
---|
| 773 | GLfloat specular[] = {1.0, 1.0, 1.0, 1.0};
|
---|
| 774 |
|
---|
[2765] | 775 | GLfloat lmodel_ambient[] = {0.5f, 0.5f, 0.5f, 1.0f};
|
---|
| 776 | //GLfloat lmodel_ambient[] = {0.2f, 0.2f, 0.2f, 1.0f};
|
---|
[2759] | 777 |
|
---|
| 778 | glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
|
---|
| 779 | glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
|
---|
| 780 | glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
|
---|
| 781 |
|
---|
[2760] | 782 | GLfloat position[] = {1.0, 1.0, 1.0, 0.0};
|
---|
[2759] | 783 | glLightfv(GL_LIGHT0, GL_POSITION, position);
|
---|
| 784 |
|
---|
| 785 |
|
---|
| 786 | ////////////
|
---|
| 787 | //-- second light
|
---|
| 788 |
|
---|
[2760] | 789 | GLfloat ambient1[] = {0.5, 0.5, 0.5, 1.0};
|
---|
| 790 | //GLfloat diffuse1[] = {1.0, 1.0, 1.0, 1.0};
|
---|
[2759] | 791 | GLfloat diffuse1[] = {0.5, 0.5, 0.5, 1.0};
|
---|
[2760] | 792 | GLfloat specular1[] = {0.5, 0.5, 0.5, 1.0};
|
---|
[2759] | 793 |
|
---|
| 794 | glLightfv(GL_LIGHT1, GL_AMBIENT, ambient1);
|
---|
| 795 | glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse1);
|
---|
| 796 | glLightfv(GL_LIGHT1, GL_SPECULAR, specular1);
|
---|
| 797 |
|
---|
| 798 | GLfloat position1[] = {0.0, 1.0, 0.0, 1.0};
|
---|
| 799 | glLightfv(GL_LIGHT1, GL_POSITION, position1);
|
---|
| 800 |
|
---|
| 801 | glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
|
---|
[2801] | 802 | glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
|
---|
| 803 | //glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE);
|
---|
[2759] | 804 | //glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL_EXT, GL_SEPARATE_SPECULAR_COLOR_EXT);
|
---|
| 805 | glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL_EXT, GL_SINGLE_COLOR_EXT);
|
---|
[2642] | 806 | }
|
---|
| 807 |
|
---|
[2800] | 808 |
|
---|
[2795] | 809 | void SetupEyeView()
|
---|
[2642] | 810 | {
|
---|
[2759] | 811 | glMatrixMode(GL_PROJECTION);
|
---|
| 812 | glLoadIdentity();
|
---|
| 813 |
|
---|
[2809] | 814 | gluPerspective(fov, 1.0f / winAspectRatio, nearDist, myfar);
|
---|
[2759] | 815 |
|
---|
[2756] | 816 | glMatrixMode(GL_MODELVIEW);
|
---|
[2795] | 817 | glLoadIdentity();
|
---|
[2760] | 818 | camera->SetupCameraView();
|
---|
| 819 |
|
---|
| 820 | GLfloat position[] = {0.8f, 1.0f, 1.5f, 0.0f};
|
---|
[2759] | 821 | glLightfv(GL_LIGHT0, GL_POSITION, position);
|
---|
| 822 |
|
---|
[2815] | 823 | GLfloat position1[] = {bvh->GetBox().Center().x, bvh->GetBox().Center().y, bvh->GetBox().Max().z, 1.0f};
|
---|
[2759] | 824 | glLightfv(GL_LIGHT1, GL_POSITION, position1);
|
---|
[2642] | 825 | }
|
---|
| 826 |
|
---|
| 827 |
|
---|
[2792] | 828 | void KeyHorizontalMotion(float shift)
|
---|
| 829 | {
|
---|
| 830 | Vector3 hvec = camera->GetDirection();
|
---|
| 831 | hvec.z = 0;
|
---|
| 832 |
|
---|
| 833 | Vector3 pos = camera->GetPosition();
|
---|
| 834 | pos += hvec * shift;
|
---|
| 835 |
|
---|
| 836 | camera->SetPosition(pos);
|
---|
| 837 | }
|
---|
| 838 |
|
---|
| 839 |
|
---|
[2794] | 840 | void KeyVerticalMotion(float shift)
|
---|
| 841 | {
|
---|
| 842 | Vector3 uvec = Vector3(0, 0, shift);
|
---|
| 843 |
|
---|
| 844 | Vector3 pos = camera->GetPosition();
|
---|
| 845 | pos += uvec;
|
---|
| 846 |
|
---|
| 847 | camera->SetPosition(pos);
|
---|
| 848 | }
|
---|
| 849 |
|
---|
| 850 |
|
---|
| 851 |
|
---|
[2792] | 852 | void Display()
|
---|
[2801] | 853 | {
|
---|
| 854 | PerfTimer frameTimer, algTimer;
|
---|
| 855 | frameTimer.Start();
|
---|
| 856 |
|
---|
[2800] | 857 | Vector3 oldPos = camera->GetPosition();
|
---|
| 858 |
|
---|
[2792] | 859 | if (leftKeyPressed)
|
---|
[2795] | 860 | camera->Pitch(KeyRotationAngle());
|
---|
[2792] | 861 | if (rightKeyPressed)
|
---|
[2795] | 862 | camera->Pitch(-KeyRotationAngle());
|
---|
[2792] | 863 | if (upKeyPressed)
|
---|
[2795] | 864 | KeyHorizontalMotion(KeyShift());
|
---|
[2792] | 865 | if (downKeyPressed)
|
---|
[2795] | 866 | KeyHorizontalMotion(-KeyShift());
|
---|
[2794] | 867 | if (eightKeyPressed)
|
---|
[2795] | 868 | KeyVerticalMotion(-KeyShift());
|
---|
[2794] | 869 | if (nineKeyPressed)
|
---|
[2795] | 870 | KeyVerticalMotion(KeyShift());
|
---|
[2792] | 871 |
|
---|
[2801] | 872 | // place view on ground
|
---|
| 873 | if (!flyMode) PlaceViewer(oldPos);
|
---|
[2800] | 874 |
|
---|
[2803] | 875 | if (useGlFinish) glFinish();
|
---|
[2800] | 876 |
|
---|
[2801] | 877 | algTimer.Start();
|
---|
[2796] | 878 |
|
---|
[2809] | 879 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
|
---|
| 880 |
|
---|
| 881 | glPushAttrib(GL_VIEWPORT_BIT);
|
---|
| 882 | glViewport(0, 0, texWidth, texHeight);
|
---|
| 883 |
|
---|
| 884 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
[2810] | 885 | cgGLBindProgram(sCgMrtFragmentProgram);
|
---|
[2809] | 886 |
|
---|
| 887 | cgGLEnableProfile(sCgVertexProfile);
|
---|
[2810] | 888 | cgGLBindProgram(sCgMrtVertexProgram);
|
---|
[2809] | 889 |
|
---|
[2810] | 890 | glDrawBuffers(3, mrt);
|
---|
[2809] | 891 |
|
---|
[2642] | 892 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 893 |
|
---|
[2801] | 894 | glDepthFunc(GL_LESS);
|
---|
| 895 | glDisable(GL_TEXTURE_2D);
|
---|
| 896 | glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
---|
| 897 |
|
---|
| 898 | // render without shading
|
---|
| 899 | if (depthPass)
|
---|
| 900 | {
|
---|
| 901 | state.SetDepthPass(true);
|
---|
| 902 | glDisable(GL_LIGHTING);
|
---|
| 903 | }
|
---|
| 904 | else
|
---|
| 905 | {
|
---|
| 906 | state.SetDepthPass(false);
|
---|
| 907 | glEnable(GL_LIGHTING);
|
---|
| 908 | }
|
---|
| 909 |
|
---|
[2756] | 910 | // bring eye modelview matrix up-to-date
|
---|
| 911 | SetupEyeView();
|
---|
[2642] | 912 |
|
---|
[2810] | 913 | Vector3 dir = camera->GetDirection();
|
---|
| 914 | //cgGLSetParameter3f(sEyeVecParam, dir.x, dir.y, dir.z);
|
---|
[2809] | 915 |
|
---|
| 916 | // set modelview matrix for shaders
|
---|
| 917 | cgGLSetStateMatrixParameter(sModelViewMatrixParam, CG_GL_MODELVIEW_PROJECTION_MATRIX, CG_GL_MATRIX_IDENTITY);
|
---|
| 918 | cgGLEnableProfile(sCgVertexProfile);
|
---|
| 919 |
|
---|
[2767] | 920 | // actually render the scene geometry using one of the specified algorithms
|
---|
| 921 | traverser->RenderScene();
|
---|
[2795] | 922 |
|
---|
[2801] | 923 |
|
---|
| 924 | //////
|
---|
[2809] | 925 | //-- do the rest of the rendering
|
---|
[2801] | 926 |
|
---|
| 927 | glEnableClientState(GL_VERTEX_ARRAY);
|
---|
| 928 | glEnableClientState(GL_NORMAL_ARRAY);
|
---|
| 929 |
|
---|
| 930 |
|
---|
| 931 | // reset depth pass and render visible objects
|
---|
| 932 | if (depthPass)
|
---|
| 933 | {
|
---|
| 934 | RenderVisibleObjects();
|
---|
| 935 | }
|
---|
[2764] | 936 |
|
---|
[2801] | 937 |
|
---|
[2796] | 938 | ///////////////
|
---|
| 939 | //-- render sky
|
---|
[2795] | 940 |
|
---|
[2796] | 941 | RenderSky();
|
---|
[2801] | 942 |
|
---|
| 943 | state.Reset();
|
---|
| 944 |
|
---|
| 945 | glDisableClientState(GL_VERTEX_ARRAY);
|
---|
| 946 | glDisableClientState(GL_NORMAL_ARRAY);
|
---|
[2809] | 947 |
|
---|
| 948 |
|
---|
| 949 | cgGLDisableProfile(sCgVertexProfile);
|
---|
| 950 | cgGLDisableProfile(sCgFragmentProfile);
|
---|
[2801] | 951 |
|
---|
[2809] | 952 | glPopAttrib();
|
---|
[2810] | 953 |
|
---|
| 954 | cgGLSetStateMatrixParameter(sProjectionMatrixParam, CG_GL_PROJECTION_MATRIX, CG_GL_MATRIX_IDENTITY);
|
---|
[2809] | 955 |
|
---|
| 956 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
|
---|
| 957 |
|
---|
| 958 | DisplayRenderTexture();
|
---|
| 959 |
|
---|
[2803] | 960 | if (useGlFinish) glFinish();
|
---|
[2801] | 961 |
|
---|
| 962 | algTime = algTimer.Elapsedms();
|
---|
| 963 |
|
---|
| 964 | ///////////
|
---|
| 965 |
|
---|
[2787] | 966 | if (visMode) DisplayVisualization();
|
---|
[2759] | 967 |
|
---|
[2764] | 968 | DisplayStats();
|
---|
[2767] | 969 |
|
---|
[2642] | 970 | glutSwapBuffers();
|
---|
[2795] | 971 |
|
---|
| 972 | elapsedTime = frameTimer.Elapsed();
|
---|
[2642] | 973 | }
|
---|
| 974 |
|
---|
| 975 |
|
---|
| 976 | #pragma warning( disable : 4100 )
|
---|
[2792] | 977 | void KeyBoard(unsigned char c, int x, int y)
|
---|
[2642] | 978 | {
|
---|
| 979 | switch(c)
|
---|
| 980 | {
|
---|
| 981 | case 27:
|
---|
[2792] | 982 | CleanUp();
|
---|
[2642] | 983 | exit(0);
|
---|
| 984 | break;
|
---|
| 985 | case 32: //space
|
---|
[2800] | 986 | renderMode = (renderMode + 1) % RenderTraverser::NUM_TRAVERSAL_TYPES;
|
---|
[2764] | 987 | ResetTraverser();
|
---|
[2642] | 988 | break;
|
---|
| 989 | case 'h':
|
---|
| 990 | case 'H':
|
---|
| 991 | showHelp = !showHelp;
|
---|
| 992 | break;
|
---|
| 993 | case '+':
|
---|
[2776] | 994 | maxBatchSize += 10;
|
---|
| 995 | traverser->SetMaxBatchSize(maxBatchSize);
|
---|
[2642] | 996 | break;
|
---|
| 997 | case '-':
|
---|
[2776] | 998 | maxBatchSize -= 10;
|
---|
| 999 | if (maxBatchSize < 0) maxBatchSize = 1;
|
---|
| 1000 | traverser->SetMaxBatchSize(maxBatchSize);
|
---|
[2642] | 1001 | break;
|
---|
[2776] | 1002 | case '6':
|
---|
| 1003 | assumedVisibleFrames -= 1;
|
---|
| 1004 | if (assumedVisibleFrames < 1) assumedVisibleFrames = 1;
|
---|
| 1005 | traverser->SetAssumedVisibleFrames(assumedVisibleFrames);
|
---|
| 1006 | break;
|
---|
| 1007 | case '7':
|
---|
| 1008 | assumedVisibleFrames += 1;
|
---|
| 1009 | traverser->SetAssumedVisibleFrames(assumedVisibleFrames);
|
---|
| 1010 | break;
|
---|
| 1011 | case 'M':
|
---|
| 1012 | case 'm':
|
---|
| 1013 | useMultiQueries = !useMultiQueries;
|
---|
| 1014 | traverser->SetUseMultiQueries(useMultiQueries);
|
---|
| 1015 | break;
|
---|
[2767] | 1016 | case '8':
|
---|
[2794] | 1017 | eightKeyPressed = true;
|
---|
[2767] | 1018 | break;
|
---|
| 1019 | case '9':
|
---|
[2794] | 1020 | nineKeyPressed = true;
|
---|
[2767] | 1021 | break;
|
---|
[2792] | 1022 | case 'o':
|
---|
| 1023 | case 'O':
|
---|
[2642] | 1024 | useOptimization = !useOptimization;
|
---|
[2764] | 1025 | traverser->SetUseOptimization(useOptimization);
|
---|
[2767] | 1026 | break;
|
---|
| 1027 | case 'a':
|
---|
| 1028 | case 'A':
|
---|
[2792] | 1029 | leftKeyPressed = true;
|
---|
[2767] | 1030 | break;
|
---|
| 1031 | case 'd':
|
---|
| 1032 | case 'D':
|
---|
[2792] | 1033 | rightKeyPressed = true;
|
---|
[2767] | 1034 | break;
|
---|
| 1035 | case 'w':
|
---|
| 1036 | case 'W':
|
---|
[2792] | 1037 | upKeyPressed = true;
|
---|
[2767] | 1038 | break;
|
---|
| 1039 | case 'x':
|
---|
| 1040 | case 'X':
|
---|
[2792] | 1041 | downKeyPressed = true;
|
---|
[2767] | 1042 | break;
|
---|
| 1043 | case 'r':
|
---|
| 1044 | case 'R':
|
---|
| 1045 | {
|
---|
| 1046 | useRenderQueue = !useRenderQueue;
|
---|
| 1047 | traverser->SetUseRenderQueue(useRenderQueue);
|
---|
| 1048 | }
|
---|
[2790] | 1049 | break;
|
---|
[2786] | 1050 | case 'b':
|
---|
| 1051 | case 'B':
|
---|
| 1052 | {
|
---|
| 1053 | useTightBounds = !useTightBounds;
|
---|
| 1054 | traverser->SetUseTightBounds(useTightBounds);
|
---|
| 1055 | }
|
---|
[2790] | 1056 | break;
|
---|
[2795] | 1057 | case '4':
|
---|
| 1058 | if (trianglesPerVirtualLeaf >= 100)
|
---|
| 1059 | trianglesPerVirtualLeaf -= 100;
|
---|
[2792] | 1060 |
|
---|
[2795] | 1061 | bvh->SetVirtualLeaves(trianglesPerVirtualLeaf);
|
---|
| 1062 | break;
|
---|
| 1063 | case '5':
|
---|
| 1064 | trianglesPerVirtualLeaf += 100;
|
---|
| 1065 | bvh->SetVirtualLeaves(trianglesPerVirtualLeaf);
|
---|
| 1066 | break;
|
---|
[2642] | 1067 | default:
|
---|
| 1068 | return;
|
---|
| 1069 | }
|
---|
| 1070 |
|
---|
| 1071 | glutPostRedisplay();
|
---|
| 1072 | }
|
---|
| 1073 |
|
---|
| 1074 |
|
---|
[2792] | 1075 | void SpecialKeyUp(int c, int x, int y)
|
---|
[2642] | 1076 | {
|
---|
[2792] | 1077 | switch (c)
|
---|
| 1078 | {
|
---|
| 1079 | case GLUT_KEY_LEFT:
|
---|
| 1080 | leftKeyPressed = false;
|
---|
| 1081 | break;
|
---|
| 1082 | case GLUT_KEY_RIGHT:
|
---|
| 1083 | rightKeyPressed = false;
|
---|
| 1084 | break;
|
---|
| 1085 | case GLUT_KEY_UP:
|
---|
| 1086 | upKeyPressed = false;
|
---|
| 1087 | break;
|
---|
| 1088 | case GLUT_KEY_DOWN:
|
---|
| 1089 | downKeyPressed = false;
|
---|
| 1090 | break;
|
---|
| 1091 | default:
|
---|
| 1092 | return;
|
---|
| 1093 | }
|
---|
| 1094 | //glutPostRedisplay();
|
---|
| 1095 | }
|
---|
| 1096 |
|
---|
| 1097 |
|
---|
| 1098 | void KeyUp(unsigned char c, int x, int y)
|
---|
| 1099 | {
|
---|
| 1100 | switch (c)
|
---|
| 1101 | {
|
---|
| 1102 | case 'A':
|
---|
| 1103 | case 'a':
|
---|
| 1104 | leftKeyPressed = false;
|
---|
| 1105 | break;
|
---|
| 1106 | case 'D':
|
---|
| 1107 | case 'd':
|
---|
| 1108 | rightKeyPressed = false;
|
---|
| 1109 | break;
|
---|
| 1110 | case 'W':
|
---|
| 1111 | case 'w':
|
---|
| 1112 | upKeyPressed = false;
|
---|
| 1113 | break;
|
---|
| 1114 | case 'X':
|
---|
| 1115 | case 'x':
|
---|
| 1116 | downKeyPressed = false;
|
---|
| 1117 | break;
|
---|
[2794] | 1118 | case '8':
|
---|
| 1119 | eightKeyPressed = false;
|
---|
| 1120 | break;
|
---|
| 1121 |
|
---|
| 1122 | case '9':
|
---|
| 1123 | nineKeyPressed = false;
|
---|
| 1124 | break;
|
---|
| 1125 |
|
---|
[2792] | 1126 | default:
|
---|
| 1127 | return;
|
---|
| 1128 | }
|
---|
| 1129 | //glutPostRedisplay();
|
---|
| 1130 | }
|
---|
| 1131 |
|
---|
| 1132 |
|
---|
| 1133 | void Special(int c, int x, int y)
|
---|
| 1134 | {
|
---|
[2642] | 1135 | switch(c)
|
---|
| 1136 | {
|
---|
| 1137 | case GLUT_KEY_F1:
|
---|
| 1138 | showHelp = !showHelp;
|
---|
| 1139 | break;
|
---|
[2790] | 1140 | case GLUT_KEY_F2:
|
---|
[2795] | 1141 | visMode = !visMode;
|
---|
[2790] | 1142 | break;
|
---|
| 1143 | case GLUT_KEY_F3:
|
---|
| 1144 | showBoundingVolumes = !showBoundingVolumes;
|
---|
| 1145 | traverser->SetShowBounds(showBoundingVolumes);
|
---|
| 1146 | break;
|
---|
| 1147 | case GLUT_KEY_F4:
|
---|
[2795] | 1148 | showStatistics = !showStatistics;
|
---|
[2790] | 1149 | break;
|
---|
| 1150 | case GLUT_KEY_F5:
|
---|
| 1151 | showOptions = !showOptions;
|
---|
| 1152 | break;
|
---|
[2800] | 1153 | case GLUT_KEY_F6:
|
---|
| 1154 | flyMode = !flyMode;
|
---|
| 1155 | break;
|
---|
[2801] | 1156 | case GLUT_KEY_F7:
|
---|
| 1157 | depthPass = !depthPass;
|
---|
| 1158 | traverser->SetUseDepthPass(depthPass);
|
---|
| 1159 | break;
|
---|
[2803] | 1160 | case GLUT_KEY_F8:
|
---|
| 1161 | useGlFinish = !useGlFinish;
|
---|
| 1162 | break;
|
---|
[2642] | 1163 | case GLUT_KEY_LEFT:
|
---|
[2767] | 1164 | {
|
---|
[2792] | 1165 | leftKeyPressed = true;
|
---|
[2795] | 1166 | camera->Pitch(KeyRotationAngle());
|
---|
[2767] | 1167 | }
|
---|
[2642] | 1168 | break;
|
---|
| 1169 | case GLUT_KEY_RIGHT:
|
---|
[2767] | 1170 | {
|
---|
[2792] | 1171 | rightKeyPressed = true;
|
---|
[2795] | 1172 | camera->Pitch(-KeyRotationAngle());
|
---|
[2767] | 1173 | }
|
---|
[2642] | 1174 | break;
|
---|
| 1175 | case GLUT_KEY_UP:
|
---|
[2767] | 1176 | {
|
---|
[2792] | 1177 | upKeyPressed = true;
|
---|
[2795] | 1178 | KeyHorizontalMotion(KeyShift());
|
---|
[2767] | 1179 | }
|
---|
[2642] | 1180 | break;
|
---|
| 1181 | case GLUT_KEY_DOWN:
|
---|
[2767] | 1182 | {
|
---|
[2792] | 1183 | downKeyPressed = true;
|
---|
[2795] | 1184 | KeyHorizontalMotion(-KeyShift());
|
---|
[2767] | 1185 | }
|
---|
[2642] | 1186 | break;
|
---|
| 1187 | default:
|
---|
| 1188 | return;
|
---|
| 1189 |
|
---|
| 1190 | }
|
---|
| 1191 |
|
---|
| 1192 | glutPostRedisplay();
|
---|
| 1193 | }
|
---|
[2767] | 1194 |
|
---|
[2642] | 1195 | #pragma warning( default : 4100 )
|
---|
| 1196 |
|
---|
| 1197 |
|
---|
[2792] | 1198 | void Reshape(int w, int h)
|
---|
[2642] | 1199 | {
|
---|
[2759] | 1200 | winAspectRatio = 1.0f;
|
---|
[2642] | 1201 |
|
---|
| 1202 | glViewport(0, 0, w, h);
|
---|
| 1203 |
|
---|
| 1204 | winWidth = w;
|
---|
| 1205 | winHeight = h;
|
---|
| 1206 |
|
---|
[2759] | 1207 | if (w) winAspectRatio = (float) h / (float) w;
|
---|
[2642] | 1208 |
|
---|
[2758] | 1209 | glMatrixMode(GL_PROJECTION);
|
---|
| 1210 | glLoadIdentity();
|
---|
[2642] | 1211 |
|
---|
[2809] | 1212 | gluPerspective(fov, 1.0f / winAspectRatio, nearDist, myfar);
|
---|
[2788] | 1213 |
|
---|
[2758] | 1214 | glMatrixMode(GL_MODELVIEW);
|
---|
| 1215 |
|
---|
[2642] | 1216 | glutPostRedisplay();
|
---|
| 1217 | }
|
---|
| 1218 |
|
---|
| 1219 |
|
---|
[2792] | 1220 | void Mouse(int button, int state, int x, int y)
|
---|
[2642] | 1221 | {
|
---|
[2758] | 1222 | if ((button == GLUT_LEFT_BUTTON) && (state == GLUT_DOWN))
|
---|
[2642] | 1223 | {
|
---|
| 1224 | xEyeBegin = x;
|
---|
| 1225 | yMotionBegin = y;
|
---|
| 1226 |
|
---|
[2792] | 1227 | glutMotionFunc(LeftMotion);
|
---|
[2642] | 1228 | }
|
---|
[2758] | 1229 | else if ((button == GLUT_RIGHT_BUTTON) && (state == GLUT_DOWN))
|
---|
[2642] | 1230 | {
|
---|
[2758] | 1231 | yEyeBegin = y;
|
---|
| 1232 | yMotionBegin = y;
|
---|
| 1233 |
|
---|
[2792] | 1234 | glutMotionFunc(RightMotion);
|
---|
[2758] | 1235 | }
|
---|
| 1236 | else if ((button == GLUT_MIDDLE_BUTTON) && (state == GLUT_DOWN))
|
---|
| 1237 | {
|
---|
[2642] | 1238 | horizontalMotionBegin = x;
|
---|
| 1239 | verticalMotionBegin = y;
|
---|
[2792] | 1240 | glutMotionFunc(MiddleMotion);
|
---|
[2642] | 1241 | }
|
---|
| 1242 |
|
---|
| 1243 | glutPostRedisplay();
|
---|
| 1244 | }
|
---|
| 1245 |
|
---|
[2758] | 1246 |
|
---|
| 1247 | /** rotation for left/right mouse drag
|
---|
[2642] | 1248 | motion for up/down mouse drag
|
---|
| 1249 | */
|
---|
[2792] | 1250 | void LeftMotion(int x, int y)
|
---|
[2642] | 1251 | {
|
---|
[2758] | 1252 | Vector3 viewDir = camera->GetDirection();
|
---|
| 1253 | Vector3 pos = camera->GetPosition();
|
---|
| 1254 |
|
---|
| 1255 | // don't move in the vertical direction
|
---|
[2764] | 1256 | Vector3 horView(viewDir[0], viewDir[1], 0);
|
---|
[2642] | 1257 |
|
---|
[2795] | 1258 | float eyeXAngle = 0.2f * M_PI * (xEyeBegin - x) / 180.0;
|
---|
[2756] | 1259 |
|
---|
[2795] | 1260 | camera->Pitch(eyeXAngle);
|
---|
[2787] | 1261 |
|
---|
[2780] | 1262 | pos += horView * (yMotionBegin - y) * 0.2f;
|
---|
[2795] | 1263 |
|
---|
[2758] | 1264 | camera->SetPosition(pos);
|
---|
[2642] | 1265 |
|
---|
| 1266 | xEyeBegin = x;
|
---|
| 1267 | yMotionBegin = y;
|
---|
[2758] | 1268 |
|
---|
[2642] | 1269 | glutPostRedisplay();
|
---|
| 1270 | }
|
---|
| 1271 |
|
---|
[2758] | 1272 |
|
---|
[2767] | 1273 | /** rotation for left / right mouse drag
|
---|
| 1274 | motion for up / down mouse drag
|
---|
[2758] | 1275 | */
|
---|
[2792] | 1276 | void RightMotion(int x, int y)
|
---|
[2758] | 1277 | {
|
---|
[2795] | 1278 | float eyeYAngle = -0.2f * M_PI * (yEyeBegin - y) / 180.0;
|
---|
[2758] | 1279 |
|
---|
[2795] | 1280 | camera->Yaw(eyeYAngle);
|
---|
[2780] | 1281 |
|
---|
[2758] | 1282 | yEyeBegin = y;
|
---|
| 1283 | glutPostRedisplay();
|
---|
| 1284 | }
|
---|
| 1285 |
|
---|
| 1286 |
|
---|
[2642] | 1287 | // strafe
|
---|
[2792] | 1288 | void MiddleMotion(int x, int y)
|
---|
[2642] | 1289 | {
|
---|
[2758] | 1290 | Vector3 viewDir = camera->GetDirection();
|
---|
| 1291 | Vector3 pos = camera->GetPosition();
|
---|
| 1292 |
|
---|
[2642] | 1293 | // the 90 degree rotated view vector
|
---|
| 1294 | // y zero so we don't move in the vertical
|
---|
[2764] | 1295 | Vector3 rVec(viewDir[0], viewDir[1], 0);
|
---|
[2642] | 1296 |
|
---|
[2764] | 1297 | Matrix4x4 rot = RotationZMatrix(M_PI * 0.5f);
|
---|
[2758] | 1298 | rVec = rot * rVec;
|
---|
[2642] | 1299 |
|
---|
[2780] | 1300 | pos -= rVec * (x - horizontalMotionBegin) * 0.1f;
|
---|
[2764] | 1301 | pos[2] += (verticalMotionBegin - y) * 0.1f;
|
---|
[2642] | 1302 |
|
---|
[2758] | 1303 | camera->SetPosition(pos);
|
---|
| 1304 |
|
---|
[2642] | 1305 | horizontalMotionBegin = x;
|
---|
| 1306 | verticalMotionBegin = y;
|
---|
[2758] | 1307 |
|
---|
[2642] | 1308 | glutPostRedisplay();
|
---|
| 1309 | }
|
---|
| 1310 |
|
---|
| 1311 |
|
---|
[2756] | 1312 | void InitExtensions(void)
|
---|
[2642] | 1313 | {
|
---|
| 1314 | GLenum err = glewInit();
|
---|
[2756] | 1315 |
|
---|
[2642] | 1316 | if (GLEW_OK != err)
|
---|
| 1317 | {
|
---|
| 1318 | // problem: glewInit failed, something is seriously wrong
|
---|
| 1319 | fprintf(stderr,"Error: %s\n", glewGetErrorString(err));
|
---|
| 1320 | exit(1);
|
---|
| 1321 | }
|
---|
[2756] | 1322 | if (!GLEW_ARB_occlusion_query)
|
---|
[2642] | 1323 | {
|
---|
[2756] | 1324 | printf("I require the GL_ARB_occlusion_query to work.\n");
|
---|
[2642] | 1325 | exit(1);
|
---|
| 1326 | }
|
---|
| 1327 | }
|
---|
| 1328 |
|
---|
| 1329 |
|
---|
[2792] | 1330 | void Begin2D(void)
|
---|
[2642] | 1331 | {
|
---|
| 1332 | glDisable(GL_LIGHTING);
|
---|
| 1333 | glDisable(GL_DEPTH_TEST);
|
---|
| 1334 |
|
---|
| 1335 | glPushMatrix();
|
---|
| 1336 | glLoadIdentity();
|
---|
| 1337 |
|
---|
| 1338 | glMatrixMode(GL_PROJECTION);
|
---|
| 1339 | glPushMatrix();
|
---|
| 1340 | glLoadIdentity();
|
---|
| 1341 | gluOrtho2D(0, winWidth, winHeight, 0);
|
---|
| 1342 | }
|
---|
| 1343 |
|
---|
| 1344 |
|
---|
[2792] | 1345 | void End2D(void)
|
---|
[2642] | 1346 | {
|
---|
| 1347 | glPopMatrix();
|
---|
| 1348 | glMatrixMode(GL_MODELVIEW);
|
---|
| 1349 | glPopMatrix();
|
---|
| 1350 |
|
---|
| 1351 | glEnable(GL_LIGHTING);
|
---|
| 1352 | glEnable(GL_DEPTH_TEST);
|
---|
| 1353 | }
|
---|
| 1354 |
|
---|
| 1355 |
|
---|
[2769] | 1356 | void Output(int x, int y, const char *string)
|
---|
[2642] | 1357 | {
|
---|
[2767] | 1358 | if (string != 0)
|
---|
[2642] | 1359 | {
|
---|
[2767] | 1360 | size_t len, i;
|
---|
| 1361 | glRasterPos2f(x, y);
|
---|
| 1362 | len = strlen(string);
|
---|
[2642] | 1363 |
|
---|
[2767] | 1364 | for (i = 0; i < len; ++ i)
|
---|
[2642] | 1365 | {
|
---|
[2769] | 1366 | glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, string[i]);
|
---|
[2642] | 1367 | }
|
---|
| 1368 | }
|
---|
| 1369 | }
|
---|
| 1370 |
|
---|
[2767] | 1371 |
|
---|
[2787] | 1372 | // displays the visualisation of culling algorithm
|
---|
| 1373 | void DisplayVisualization()
|
---|
[2796] | 1374 | {
|
---|
[2787] | 1375 | visualization->SetFrameId(traverser->GetCurrentFrameId());
|
---|
| 1376 |
|
---|
[2792] | 1377 | Begin2D();
|
---|
[2642] | 1378 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
---|
| 1379 | glEnable(GL_BLEND);
|
---|
| 1380 | glColor4f(0.0,0.0,0.0,0.5);
|
---|
| 1381 |
|
---|
[2806] | 1382 | glRecti(winWidth, 0, winWidth - winWidth / 3, winHeight / 3);
|
---|
[2642] | 1383 | glDisable(GL_BLEND);
|
---|
[2792] | 1384 | End2D();
|
---|
[2788] | 1385 |
|
---|
| 1386 |
|
---|
| 1387 | AxisAlignedBox3 box = bvh->GetBox();
|
---|
| 1388 |
|
---|
[2807] | 1389 | // set far for viz
|
---|
| 1390 | camera->SetFar(0.35f * Magnitude(box.Diagonal()));
|
---|
[2796] | 1391 |
|
---|
[2807] | 1392 | const float offs = box.Size().x * 0.3f;
|
---|
| 1393 | //const float yoffs = box.Size().y * 0.5f;
|
---|
| 1394 |
|
---|
[2806] | 1395 | Vector3 pos = camera->GetPosition();
|
---|
| 1396 |
|
---|
[2807] | 1397 | Vector3 vizpos = Vector3(box.Min().x + 20, box.Min().y + 500, box.Min().z + box.Size().z * 50);
|
---|
[2806] | 1398 |
|
---|
[2795] | 1399 | visCamera->SetPosition(vizpos);
|
---|
[2796] | 1400 |
|
---|
[2806] | 1401 | glViewport(winWidth - winWidth / 3, winHeight - winHeight / 3, winWidth / 3, winHeight / 3);
|
---|
[2796] | 1402 |
|
---|
| 1403 | glMatrixMode(GL_PROJECTION);
|
---|
[2787] | 1404 | glLoadIdentity();
|
---|
[2796] | 1405 |
|
---|
[2807] | 1406 | glOrtho(-offs, offs, -offs, offs, 0.0f, box.Size().z * 100.0f);
|
---|
[2787] | 1407 |
|
---|
[2796] | 1408 | glMatrixMode(GL_MODELVIEW);
|
---|
[2787] | 1409 |
|
---|
[2796] | 1410 | visCamera->SetupCameraView();
|
---|
[2806] | 1411 |
|
---|
| 1412 | Matrix4x4 rotZ = RotationZMatrix(-camera->GetPitch());
|
---|
| 1413 | glMultMatrixf((float *)rotZ.x);
|
---|
| 1414 |
|
---|
| 1415 | glTranslatef(-pos.x, -pos.y, -pos.z);
|
---|
| 1416 |
|
---|
| 1417 |
|
---|
[2788] | 1418 | GLfloat position[] = {0.8f, 1.0f, 1.5f, 0.0f};
|
---|
| 1419 | glLightfv(GL_LIGHT0, GL_POSITION, position);
|
---|
[2787] | 1420 |
|
---|
[2788] | 1421 | GLfloat position1[] = {bvh->GetBox().Center().x, bvh->GetBox().Max().y, bvh->GetBox().Center().z, 1.0f};
|
---|
| 1422 | glLightfv(GL_LIGHT1, GL_POSITION, position1);
|
---|
[2787] | 1423 |
|
---|
[2642] | 1424 | glClear(GL_DEPTH_BUFFER_BIT);
|
---|
| 1425 |
|
---|
[2806] | 1426 |
|
---|
[2767] | 1427 | ////////////
|
---|
[2787] | 1428 | //-- visualization of the occlusion culling
|
---|
| 1429 |
|
---|
[2767] | 1430 | visualization->Render();
|
---|
| 1431 |
|
---|
[2806] | 1432 | // reset vp
|
---|
[2642] | 1433 | glViewport(0, 0, winWidth, winHeight);
|
---|
| 1434 | }
|
---|
| 1435 |
|
---|
[2767] | 1436 |
|
---|
[2642] | 1437 | // cleanup routine after the main loop
|
---|
[2756] | 1438 | void CleanUp()
|
---|
[2642] | 1439 | {
|
---|
[2756] | 1440 | DEL_PTR(traverser);
|
---|
[2796] | 1441 | DEL_PTR(sceneQuery);
|
---|
[2756] | 1442 | DEL_PTR(bvh);
|
---|
[2767] | 1443 | DEL_PTR(visualization);
|
---|
[2787] | 1444 | DEL_PTR(camera);
|
---|
[2793] | 1445 | DEL_PTR(loader);
|
---|
[2801] | 1446 | DEL_PTR(renderQueue);
|
---|
[2809] | 1447 |
|
---|
[2810] | 1448 | if (sCgMrtVertexProgram)
|
---|
| 1449 | cgDestroyProgram(sCgMrtVertexProgram);
|
---|
[2809] | 1450 | if (sCgSSAOProgram)
|
---|
| 1451 | cgDestroyProgram(sCgSSAOProgram);
|
---|
| 1452 | if (sCgContext)
|
---|
| 1453 | cgDestroyContext(sCgContext);
|
---|
[2817] | 1454 |
|
---|
| 1455 | glDeleteFramebuffersEXT(1, &fbo);
|
---|
| 1456 | glDeleteRenderbuffersEXT(1, &depthBuffer);
|
---|
| 1457 | glDeleteRenderbuffersEXT(1, &colorsBuffer);
|
---|
| 1458 | glDeleteRenderbuffersEXT(1, &normalsBuffer);
|
---|
| 1459 | glDeleteRenderbuffersEXT(1, &positionsBuffer);
|
---|
| 1460 |
|
---|
| 1461 | glDeleteTextures(1, &colorsTex);
|
---|
| 1462 | glDeleteTextures(1, &normalsTex);
|
---|
| 1463 | glDeleteTextures(1, &positionsTex);
|
---|
| 1464 | glDeleteTextures(1, &noiseTex);
|
---|
[2642] | 1465 | }
|
---|
| 1466 |
|
---|
| 1467 |
|
---|
| 1468 | // this function inserts a dezimal point after each 1000
|
---|
[2764] | 1469 | void CalcDecimalPoint(string &str, int d)
|
---|
[2642] | 1470 | {
|
---|
| 1471 | vector<int> numbers;
|
---|
| 1472 | char hstr[100];
|
---|
| 1473 |
|
---|
| 1474 | while (d != 0)
|
---|
| 1475 | {
|
---|
| 1476 | numbers.push_back(d % 1000);
|
---|
| 1477 | d /= 1000;
|
---|
| 1478 | }
|
---|
| 1479 |
|
---|
| 1480 | // first element without leading zeros
|
---|
| 1481 | if (numbers.size() > 0)
|
---|
| 1482 | {
|
---|
[2800] | 1483 | sprintf(hstr, "%d", numbers.back());
|
---|
[2642] | 1484 | str.append(hstr);
|
---|
| 1485 | }
|
---|
| 1486 |
|
---|
[2764] | 1487 | for (int i = (int)numbers.size() - 2; i >= 0; i--)
|
---|
[2642] | 1488 | {
|
---|
[2800] | 1489 | sprintf(hstr, ",%03d", numbers[i]);
|
---|
[2642] | 1490 | str.append(hstr);
|
---|
| 1491 | }
|
---|
[2764] | 1492 | }
|
---|
| 1493 |
|
---|
| 1494 |
|
---|
| 1495 | void DisplayStats()
|
---|
| 1496 | {
|
---|
[2808] | 1497 | static char msg[7][300];
|
---|
[2764] | 1498 |
|
---|
[2801] | 1499 | static double renderTime = algTime;
|
---|
[2808] | 1500 | const float expFactor = 0.5f;
|
---|
[2767] | 1501 |
|
---|
[2802] | 1502 | // if some strange render time spike happened in this frame => don't count
|
---|
[2808] | 1503 | if (algTime < 500) renderTime = algTime * expFactor + (1.0f - expFactor) * algTime;
|
---|
[2764] | 1504 |
|
---|
[2802] | 1505 | accumulatedTime += elapsedTime * 1e3f;
|
---|
| 1506 |
|
---|
[2776] | 1507 | if (accumulatedTime > 500) // update every fraction of a second
|
---|
[2770] | 1508 | {
|
---|
| 1509 | accumulatedTime = 0;
|
---|
| 1510 | if (renderTime) fps = 1e3f / (float)renderTime;
|
---|
| 1511 |
|
---|
| 1512 | renderedObjects = traverser->GetStats().mNumRenderedGeometry;
|
---|
[2773] | 1513 | renderedNodes = traverser->GetStats().mNumRenderedNodes;
|
---|
| 1514 | renderedTriangles = traverser->GetStats().mNumRenderedTriangles;
|
---|
| 1515 |
|
---|
[2770] | 1516 | traversedNodes = traverser->GetStats().mNumTraversedNodes;
|
---|
| 1517 | frustumCulledNodes = traverser->GetStats().mNumFrustumCulledNodes;
|
---|
| 1518 | queryCulledNodes = traverser->GetStats().mNumQueryCulledNodes;
|
---|
| 1519 | issuedQueries = traverser->GetStats().mNumIssuedQueries;
|
---|
| 1520 | stateChanges = traverser->GetStats().mNumStateChanges;
|
---|
[2800] | 1521 | numBatches = traverser->GetStats().mNumBatches;
|
---|
[2770] | 1522 | }
|
---|
| 1523 |
|
---|
[2764] | 1524 | string str;
|
---|
| 1525 | string str2;
|
---|
| 1526 |
|
---|
[2808] | 1527 | int i = 0;
|
---|
| 1528 |
|
---|
[2773] | 1529 | CalcDecimalPoint(str, renderedTriangles);
|
---|
| 1530 | CalcDecimalPoint(str2, bvh->GetBvhStats().mTriangles);
|
---|
[2764] | 1531 |
|
---|
[2808] | 1532 | sprintf(msg[i ++], "rendered nodes: %6d (of %6d), rendered triangles: %s (of %s)",
|
---|
| 1533 | renderedNodes, bvh->GetNumVirtualNodes(), str.c_str(), str2.c_str());
|
---|
[2764] | 1534 |
|
---|
[2808] | 1535 | sprintf(msg[i ++], "traversed: %5d, frustum culled: %5d, query culled: %5d",
|
---|
| 1536 | traversedNodes, frustumCulledNodes, queryCulledNodes);
|
---|
[2764] | 1537 |
|
---|
[2808] | 1538 | sprintf(msg[i ++], "issued queries: %5d, state changes: %5d, render batches: %5d",
|
---|
| 1539 | issuedQueries, stateChanges, numBatches);
|
---|
[2788] | 1540 |
|
---|
[2808] | 1541 | sprintf(msg[i ++], "fps: %6.1f", fps);
|
---|
[2795] | 1542 |
|
---|
[2769] | 1543 |
|
---|
[2808] | 1544 | sprintf(msg[i ++], "assumed visible frames: %4d, max batch size: %4d",
|
---|
| 1545 | assumedVisibleFrames, maxBatchSize);
|
---|
[2792] | 1546 |
|
---|
[2808] | 1547 | sprintf(msg[i ++], "multiqueries: %d, tight bounds: %d, render queue: %d, depth pass: %d, glFinish: %d",
|
---|
| 1548 | useMultiQueries, useTightBounds, useRenderQueue, depthPass, useGlFinish);
|
---|
| 1549 |
|
---|
| 1550 | sprintf(msg[i ++], "triangles per virtual leaf: %5d", trianglesPerVirtualLeaf);
|
---|
| 1551 |
|
---|
| 1552 |
|
---|
[2792] | 1553 | Begin2D();
|
---|
[2764] | 1554 |
|
---|
| 1555 | if(showHelp)
|
---|
| 1556 | {
|
---|
[2786] | 1557 | DrawHelpMessage();
|
---|
[2764] | 1558 | }
|
---|
| 1559 | else
|
---|
| 1560 | {
|
---|
[2808] | 1561 | static char *alg_str[] = {"Frustum Culling", "Stop and Wait", "CHC", "CHC ++"};
|
---|
| 1562 |
|
---|
[2801] | 1563 | glColor3f(1.0f, 1.0f, 1.0f);
|
---|
[2808] | 1564 | Output(850, 30, alg_str[renderMode]);
|
---|
[2764] | 1565 |
|
---|
[2786] | 1566 | if (showStatistics)
|
---|
[2764] | 1567 | {
|
---|
[2808] | 1568 | for (int i = 0; i < 4; ++ i)
|
---|
| 1569 | Output(20, (i + 1) * 30, msg[i]);
|
---|
[2764] | 1570 | }
|
---|
[2790] | 1571 |
|
---|
| 1572 | if (showOptions)
|
---|
| 1573 | {
|
---|
[2808] | 1574 | for (int i = 4; i < 8; ++ i)
|
---|
| 1575 | Output(20, (i + 1) * 30, msg[i]);
|
---|
[2790] | 1576 | }
|
---|
[2764] | 1577 | }
|
---|
| 1578 |
|
---|
[2792] | 1579 | End2D();
|
---|
[2764] | 1580 | }
|
---|
[2796] | 1581 |
|
---|
| 1582 |
|
---|
| 1583 | void RenderSky()
|
---|
| 1584 | {
|
---|
| 1585 | SceneEntityContainer::const_iterator sit, sit_end = skyGeometry.end();
|
---|
| 1586 |
|
---|
| 1587 | for (sit = skyGeometry.begin(); sit != sit_end; ++ sit)
|
---|
| 1588 | (*sit)->Render(&state);
|
---|
[2801] | 1589 | }
|
---|
[2796] | 1590 |
|
---|
| 1591 |
|
---|
[2801] | 1592 | void RenderVisibleObjects()
|
---|
| 1593 | {
|
---|
| 1594 | state.SetDepthPass(false);
|
---|
[2796] | 1595 | state.Reset();
|
---|
[2801] | 1596 |
|
---|
| 1597 | glEnable(GL_LIGHTING);
|
---|
| 1598 | glDepthFunc(GL_LEQUAL);
|
---|
| 1599 |
|
---|
| 1600 | //cout << "visible: " << (int)traverser->GetVisibleObjects().size() << endl;
|
---|
| 1601 |
|
---|
| 1602 | SceneEntityContainer::const_iterator sit,
|
---|
| 1603 | sit_end = traverser->GetVisibleObjects().end();
|
---|
| 1604 |
|
---|
| 1605 | for (sit = traverser->GetVisibleObjects().begin(); sit != sit_end; ++ sit)
|
---|
| 1606 | renderQueue->Enqueue(*sit);
|
---|
| 1607 |
|
---|
| 1608 | renderQueue->Apply();
|
---|
| 1609 |
|
---|
| 1610 | glDepthFunc(GL_LESS);
|
---|
| 1611 | }
|
---|
| 1612 |
|
---|
| 1613 |
|
---|
| 1614 | void PlaceViewer(const Vector3 &oldPos)
|
---|
| 1615 | {
|
---|
| 1616 | Vector3 playerPos = camera->GetPosition();
|
---|
| 1617 |
|
---|
| 1618 | bool validIntersect = sceneQuery->CalcIntersection(playerPos);
|
---|
| 1619 |
|
---|
| 1620 | if (validIntersect &&
|
---|
| 1621 | (( playerPos.z - oldPos.z) < bvh->GetBox().Size(2) * 1e-1f))
|
---|
| 1622 | {
|
---|
| 1623 | camera->SetPosition(playerPos);
|
---|
| 1624 | }
|
---|
[2809] | 1625 | }
|
---|
| 1626 |
|
---|
| 1627 |
|
---|
| 1628 | void DisplayRenderTexture()
|
---|
| 1629 | {
|
---|
| 1630 | glDisable(GL_TEXTURE_2D);
|
---|
[2810] | 1631 | //glEnable(GL_TEXTURE_2D);
|
---|
[2809] | 1632 | glDisable(GL_LIGHTING);
|
---|
[2810] | 1633 | //glBindTexture(GL_TEXTURE_2D, noiseTex);
|
---|
[2809] | 1634 | glMatrixMode(GL_PROJECTION);
|
---|
| 1635 | glPushMatrix();
|
---|
| 1636 | glLoadIdentity();
|
---|
| 1637 |
|
---|
| 1638 | glMatrixMode(GL_MODELVIEW);
|
---|
| 1639 | glPushMatrix();
|
---|
| 1640 | glLoadIdentity();
|
---|
[2810] | 1641 |
|
---|
[2817] | 1642 | const float offs = 0.5f;
|
---|
| 1643 | //glPushAttrib(GL_VIEWPORT_BIT);
|
---|
| 1644 | //glViewport(-offs, texHeight);
|
---|
| 1645 | glOrtho(-offs, offs, -offs, offs, 0, 1);
|
---|
[2809] | 1646 |
|
---|
| 1647 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 1648 |
|
---|
| 1649 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
| 1650 | cgGLBindProgram(sCgSSAOProgram);
|
---|
| 1651 |
|
---|
[2810] | 1652 | cgGLEnableTextureParameter(sPositionsTexParam);
|
---|
| 1653 | cgGLSetTextureParameter(sPositionsTexParam, positionsTex);
|
---|
[2809] | 1654 |
|
---|
[2810] | 1655 | cgGLEnableTextureParameter(sColorsTexParam);
|
---|
| 1656 | cgGLSetTextureParameter(sColorsTexParam, colorsTex);
|
---|
[2809] | 1657 |
|
---|
[2810] | 1658 | cgGLEnableTextureParameter(sNormalsTexParam);
|
---|
| 1659 | cgGLSetTextureParameter(sNormalsTexParam, normalsTex);
|
---|
[2809] | 1660 |
|
---|
[2810] | 1661 | cgGLEnableTextureParameter(sNoiseTexParam);
|
---|
| 1662 | cgGLSetTextureParameter(sNoiseTexParam, noiseTex);
|
---|
| 1663 |
|
---|
[2809] | 1664 | Vector3 tl, tr, bl, br;
|
---|
| 1665 | ComputeViewVectors(tl, tr, bl, br);
|
---|
| 1666 |
|
---|
| 1667 | glColor3f(1.0f, 1.0f, 1.0f);
|
---|
| 1668 |
|
---|
| 1669 | glBegin(GL_QUADS);
|
---|
| 1670 | #if 1
|
---|
[2817] | 1671 | // slightly larger than screen size in order to hide ambient occlusion errors
|
---|
| 1672 | float offs2 = 0.55f;
|
---|
| 1673 | //float offs2 = 0.5f;
|
---|
| 1674 |
|
---|
| 1675 | glColor3f(bl.x, bl.y, bl.z); glTexCoord2f(0, 0); glVertex3f(-offs2, -offs2, -0.5f);
|
---|
| 1676 | glColor3f(br.x, br.y, br.z); glTexCoord2f(1, 0); glVertex3f( offs2, -offs2, -0.5f);
|
---|
| 1677 | glColor3f(tr.x, tr.y, tr.z); glTexCoord2f(1, 1); glVertex3f( offs2, offs2, -0.5f);
|
---|
| 1678 | glColor3f(tl.x, tl.y, tl.z); glTexCoord2f(0, 1); glVertex3f(-offs2, offs2, -0.5f);
|
---|
[2809] | 1679 | #else
|
---|
| 1680 | glTexCoord2f(0, 0); glVertex3f(-1, -1, -0.5f);
|
---|
| 1681 | glTexCoord2f(1, 0); glVertex3f( 1, -1, -0.5f);
|
---|
| 1682 | glTexCoord2f(1, 1); glVertex3f( 1, 1, -0.5f);
|
---|
| 1683 | glTexCoord2f(0, 1); glVertex3f(-1, 1, -0.5f);
|
---|
| 1684 | #endif
|
---|
| 1685 | glEnd();
|
---|
| 1686 |
|
---|
[2810] | 1687 | cgGLDisableTextureParameter(sColorsTexParam);
|
---|
| 1688 | cgGLDisableTextureParameter(sPositionsTexParam);
|
---|
| 1689 | cgGLDisableTextureParameter(sNormalsTexParam);
|
---|
| 1690 | cgGLDisableTextureParameter(sNoiseTexParam);
|
---|
| 1691 |
|
---|
[2809] | 1692 | cgGLDisableProfile(sCgFragmentProfile);
|
---|
| 1693 |
|
---|
| 1694 | glEnable(GL_LIGHTING);
|
---|
| 1695 | glDisable(GL_TEXTURE_2D);
|
---|
| 1696 |
|
---|
| 1697 | glMatrixMode(GL_PROJECTION);
|
---|
| 1698 | glPopMatrix();
|
---|
| 1699 |
|
---|
| 1700 | glMatrixMode(GL_MODELVIEW);
|
---|
| 1701 | glPopMatrix();
|
---|
| 1702 |
|
---|
[2810] | 1703 |
|
---|
[2809] | 1704 | PrintGLerror("displaytexture");
|
---|
| 1705 | }
|
---|
| 1706 |
|
---|
| 1707 |
|
---|
| 1708 |
|
---|
| 1709 | void GenerateSamples()
|
---|
| 1710 | {
|
---|
| 1711 | // fill an n * n * 2 array with uniformly distributed spherical samples
|
---|
| 1712 | for (int i = 0; i < 32; ++ i)
|
---|
| 1713 | {
|
---|
| 1714 | // create stratified samples over sphere
|
---|
| 1715 | const float rx = RandomValue(0, 1);
|
---|
| 1716 | const float ry = RandomValue(0, 1);
|
---|
| 1717 | //const float l = RandomValue(0, 1);
|
---|
| 1718 |
|
---|
| 1719 | const float theta = 2.0f * acos(sqrt(1.0f - rx));
|
---|
| 1720 | const float phi = 2.0f * M_PI * ry;
|
---|
| 1721 |
|
---|
| 1722 | samples[i] = Vector3(sin(theta) * cos(phi), sin(theta) * sin(phi), cos(theta));
|
---|
| 1723 | cout << samples[i] << endl;
|
---|
| 1724 | }
|
---|
| 1725 | }
|
---|
| 1726 |
|
---|
| 1727 |
|
---|
| 1728 | void ComputeViewVectors(Vector3 &tl, Vector3 &tr, Vector3 &bl, Vector3 &br)
|
---|
| 1729 | {
|
---|
| 1730 | float myfov = fov * M_PI / 180.0f;
|
---|
| 1731 | const float h_far = 2.0f * tan(myfov / 2.0f);
|
---|
| 1732 | const float w_far = h_far * texWidth / texHeight;
|
---|
| 1733 |
|
---|
| 1734 | float t1 = h_far * 0.5f;
|
---|
| 1735 | float t2 = w_far * 0.5f;
|
---|
| 1736 |
|
---|
| 1737 | bl = Normalize(Vector3(-t1, -t2, 1.0f));
|
---|
| 1738 | br = Normalize(Vector3( t1, -t2, 1.0f));
|
---|
| 1739 | tl = Normalize(Vector3(-t1, t2, 1.0f));
|
---|
| 1740 | tr = Normalize(Vector3( t1, t2, 1.0f));
|
---|
| 1741 |
|
---|
| 1742 | // normalize to 0 .. 1
|
---|
| 1743 | bl = bl * 0.5f + 0.5f;
|
---|
| 1744 | br = br * 0.5f + 0.5f;
|
---|
| 1745 | tl = tl * 0.5f + 0.5f;
|
---|
| 1746 | tr = tr * 0.5f + 0.5f;
|
---|
| 1747 | }
|
---|
| 1748 |
|
---|
| 1749 |
|
---|
[2810] | 1750 | void CreateNoiseTex2D()
|
---|
| 1751 | {
|
---|
[2817] | 1752 | randomNormals = new GLubyte[texWidth * texHeight * 4];
|
---|
[2810] | 1753 |
|
---|
| 1754 | for (int i = 0; i < texWidth * texHeight * 4; i += 4)
|
---|
| 1755 | {
|
---|
| 1756 | // create random samples over sphere
|
---|
| 1757 | const float rx = RandomValue(0, 1);
|
---|
| 1758 | const float theta = 2.0f * acos(sqrt(1.0f - rx));
|
---|
| 1759 |
|
---|
[2817] | 1760 | randomNormals[i + 0] = (GLubyte)((cos(theta) * 0.5f + 0.5f) * 255.0f);
|
---|
| 1761 | randomNormals[i + 1] = (GLubyte)((sin(theta) * 0.5f + 0.5f) * 255.0f);
|
---|
| 1762 | randomNormals[i + 2] = 0;
|
---|
| 1763 | randomNormals[i + 3] = 255;
|
---|
[2810] | 1764 | }
|
---|
| 1765 |
|
---|
| 1766 | glEnable(GL_TEXTURE_2D);
|
---|
| 1767 | glGenTextures(1, &noiseTex);
|
---|
| 1768 | glBindTexture(GL_TEXTURE_2D, noiseTex);
|
---|
| 1769 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
|
---|
| 1770 |
|
---|
[2817] | 1771 | gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, texWidth, texHeight, GL_RGBA, GL_UNSIGNED_BYTE, randomNormals);
|
---|
| 1772 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
| 1773 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
[2810] | 1774 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
|
---|
| 1775 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
|
---|
| 1776 |
|
---|
| 1777 | glBindTexture(GL_TEXTURE_2D, 0);
|
---|
| 1778 | glDisable(GL_TEXTURE_2D);
|
---|
| 1779 |
|
---|
| 1780 | cout << "created noise texture" << endl;
|
---|
| 1781 | PrintGLerror("noisetexture");
|
---|
| 1782 | }
|
---|