[865] | 1 | #ifndef __GLRENDERER_H
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| 2 | #define __GLRENDERER_H
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[492] | 3 |
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| 4 | #include "Vector3.h"
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| 5 | #include "Containers.h"
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| 6 | #include "Halton.h"
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[497] | 7 | #include "Renderer.h"
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[540] | 8 | #include "Beam.h"
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[492] | 9 |
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[863] | 10 |
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[860] | 11 | namespace GtpVisibilityPreprocessor {
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| 12 |
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[492] | 13 | class SceneGraph;
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| 14 | class ViewCellsManager;
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| 15 | class Mesh;
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| 16 | class MeshInstance;
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| 17 | class Intersectable;
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| 18 | class Material;
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[512] | 19 | class Beam;
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[532] | 20 | class KdTree;
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[538] | 21 | class GlRendererBuffer;
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[531] | 22 | class BeamSampleStatistics;
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[1001] | 23 | class OcclusionQuery;
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| 24 | class TransformedMeshInstance;
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[531] | 25 |
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[540] | 26 | struct VssRayContainer;
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| 27 |
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[492] | 28 | struct PvsRenderStatistics {
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| 29 |
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| 30 | float maxError;
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| 31 | float sumError;
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[713] | 32 | int sumPvsSize;
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[492] | 33 | int frames;
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| 34 | int errorFreeFrames;
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[502] | 35 |
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[492] | 36 | PvsRenderStatistics() { Reset(); }
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| 37 |
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[498] | 38 | void Reset() {
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[492] | 39 | maxError = 0.0f;
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| 40 | sumError = 0.0f;
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| 41 | frames = 0;
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| 42 | errorFreeFrames = 0;
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[713] | 43 | sumPvsSize = 0;
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[492] | 44 | }
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| 45 |
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| 46 | float GetMaxError() { return maxError; }
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| 47 | float GetAvgError() { return sumError/frames; }
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| 48 | float GetErrorFreeFrames() { return errorFreeFrames/(float)frames; }
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[713] | 49 | float GetAvgPvs() { return sumPvsSize/(float)frames; }
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[492] | 50 |
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| 51 | };
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| 52 |
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[811] | 53 | struct RenderCostSample {
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[496] | 54 |
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[811] | 55 | RenderCostSample() {}
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| 56 |
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| 57 | void Reset() {
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| 58 | mVisibleObjects = 0;
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| 59 | mVisiblePixels = 0;
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| 60 | }
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| 61 |
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[991] | 62 | Vector3 mPosition;
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| 63 |
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[811] | 64 | // visible object from the given point
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| 65 | int mVisibleObjects;
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| 66 |
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| 67 | // visible pixels
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| 68 | int mVisiblePixels;
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| 69 |
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| 70 | };
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| 71 |
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[496] | 72 | /** Class encapsulating gl rendering for the scene.
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| 73 | There is no gl context binding so the binding is performed in the
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| 74 | derived classes
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| 75 | */
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[497] | 76 | class GlRenderer: public Renderer
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[492] | 77 | {
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[496] | 78 |
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[492] | 79 | public:
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| 80 | ObjectContainer mObjects;
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[498] | 81 |
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[492] | 82 | Vector3 mViewPoint;
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| 83 | Vector3 mViewDirection;
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| 84 |
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| 85 | int timerId;
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| 86 | bool mUseFalseColors;
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[746] | 87 | bool mUseForcedColors;
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[492] | 88 |
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| 89 | HaltonSequence halton;
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| 90 |
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| 91 | int mFrame;
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[502] | 92 | bool mWireFrame;
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[589] | 93 |
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[811] | 94 | bool mDetectEmptyViewSpace;
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[589] | 95 | bool mSnapErrorFrames;
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[811] | 96 |
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| 97 | bool mUseGlLists;
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| 98 |
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[1145] | 99 | string mSnapPrefix;
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[502] | 100 |
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[532] | 101 | KdTree *mKdTree;
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| 102 |
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[1145] | 103 | //QWaitCondition mRenderingFinished;
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[492] | 104 |
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[1001] | 105 | vector<OcclusionQuery *> mOcclusionQueries;
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[492] | 106 |
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| 107 | GlRenderer(SceneGraph *sceneGraph,
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[532] | 108 | ViewCellsManager *viewcells,
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| 109 | KdTree *tree);
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[496] | 110 |
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[1145] | 111 | virtual ~GlRenderer();
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[492] | 112 |
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[496] | 113 |
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[492] | 114 | void SetupFalseColor(const int id);
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| 115 | void RenderIntersectable(Intersectable *);
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[535] | 116 | void RenderViewCell(ViewCell *vc);
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[492] | 117 | void RenderMeshInstance(MeshInstance *mi);
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[1001] | 118 | void RenderTransformedMeshInstance(TransformedMeshInstance *mi);
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[492] | 119 | void RenderMesh(Mesh *m);
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| 120 | void SetupMaterial(Material *m);
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[502] | 121 | virtual void SetupCamera();
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[496] | 122 |
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[497] | 123 | bool
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[496] | 124 | RenderScene();
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[492] | 125 |
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[811] | 126 | void
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| 127 | _RenderScene();
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[589] | 128 |
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[811] | 129 |
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[608] | 130 | virtual void
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[811] | 131 | SetupProjection(const int w, const int h, const float angle = 70.0f);
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[496] | 132 |
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| 133 |
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| 134 |
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| 135 |
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| 136 | void InitGL();
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| 137 |
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| 138 | virtual int GetWidth() const = 0;
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| 139 | virtual int GetHeight() const = 0;
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[540] | 140 |
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| 141 | int GetId(int r, int g, int b) const;
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[496] | 142 | };
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| 143 |
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[1146] | 144 | /* Class implementing an OpenGl render buffer.
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| 145 | */
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[1145] | 146 | class GlRendererBuffer: public GlRenderer
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[496] | 147 | {
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[1145] | 148 |
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| 149 | //Q_OBJECT
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[496] | 150 | public:
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[1145] | 151 | GlRendererBuffer(SceneGraph *sceneGraph,
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[811] | 152 | ViewCellsManager *viewcells,
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| 153 | KdTree *tree);
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[589] | 154 |
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[811] | 155 |
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[1001] | 156 | /** Evaluates render cost of a point sample.
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| 157 | @param sample the render cost sample to be evaluated
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| 158 | @param useOcclusionQueries if occlusion queries should be used or item buffer
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| 159 | @param threshold number of pixels / samples from where an object is considered visible.
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| 160 | */
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| 161 | void EvalRenderCostSample(RenderCostSample &sample,
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| 162 | const bool useOcclusionQueries,
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| 163 | const int threshold);
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[811] | 164 |
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[1001] | 165 | /** Evaluates render cost of a number of point samples. The point samples
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| 166 | are distributed uniformly over the defined view space.
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[811] | 167 |
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[1001] | 168 | @param numSamples the number of point samples taken
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| 169 | @param samples stores the taken point samples in a container
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| 170 | @param useOcclusionQueries if occlusion queries should be used or item buffer
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| 171 | @param threshold number of pixels / samples from where an object is considered visible.
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| 172 | */
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| 173 | void SampleRenderCost(const int numSamples,
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| 174 | vector<RenderCostSample> &samples,
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| 175 | const bool useOcclusionQueries,
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[1145] | 176 | const int threshold = 0)
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| 177 | {}
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[811] | 178 |
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[1145] | 179 | /** Implerment in subclasses.
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| 180 | */
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| 181 | void EvalPvsStat() {};
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[1001] | 182 |
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[1145] | 183 | void ClearErrorBuffer();
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[496] | 184 |
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| 185 |
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[1145] | 186 | virtual int GetWidth() const { return 0; }
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| 187 | virtual int GetHeight() const { return 0; }
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[496] | 188 |
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[507] | 189 |
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[563] | 190 | void RandomViewPoint();
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[507] | 191 | void SampleBeamContributions(
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| 192 | Intersectable *sourceObject,
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[512] | 193 | Beam &beam,
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[507] | 194 | const int samples,
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| 195 | BeamSampleStatistics &stat
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| 196 | );
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| 197 |
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| 198 | void
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| 199 | SampleViewpointContributions(
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| 200 | Intersectable *sourceObject,
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[514] | 201 | const Vector3 viewPoint,
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[512] | 202 | Beam &beam,
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[507] | 203 | const int desiredSamples,
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| 204 | BeamSampleStatistics &stat
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| 205 | );
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| 206 |
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[540] | 207 | void InitGL();
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| 208 |
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| 209 | /** Computes rays from information gained with hw sampling-
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| 210 | */
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| 211 | void ComputeRays(Intersectable *sourceObj, VssRayContainer &rays);
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| 212 |
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| 213 | int ComputePvs() const;
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| 214 |
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[576] | 215 | float
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[713] | 216 | GetPixelError(int &pvsSize);
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[540] | 217 |
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| 218 | int ComputePvs(ObjectContainer &objects, ObjectContainer &pvs) const;
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| 219 |
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| 220 | PvsRenderStatistics mPvsStat;
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[532] | 221 |
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[540] | 222 | int mPvsStatFrames;
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[713] | 223 | struct PvsErrorEntry {
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[1145] | 224 | PvsErrorEntry() {}
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| 225 | float mError;
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| 226 | int mPvsSize;
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| 227 | Vector3 mPosition;
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| 228 | Vector3 mDirection;
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[713] | 229 | };
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| 230 |
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| 231 | vector<PvsErrorEntry> mPvsErrorBuffer;
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| 232 |
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[997] | 233 |
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[1145] | 234 | protected:
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| 235 | unsigned int *mPixelBuffer;
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[811] | 236 |
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[513] | 237 | static void GenQueries(const int numQueries);
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[589] | 238 |
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| 239 | void SetupProjectionForViewPoint(const Vector3 &viewPoint,
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| 240 | const Beam &beam,
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[746] | 241 |
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[525] | 242 | Intersectable *sourceObject);
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[746] | 243 |
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[1001] | 244 | /** Evaluates query for one direction using item buffer.
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| 245 | */
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[997] | 246 | void EvalQueryWithItemBuffer();
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[1146] | 247 |
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[1001] | 248 | /** Evaluates query for one direction using occlusion queries.
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| 249 | */
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[997] | 250 | void EvalQueryWithOcclusionQueries();
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| 251 |
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[746] | 252 | public:
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[1145] | 253 | // matt: remove qt dependencies
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| 254 | // signals:
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| 255 | // void UpdatePvsErrorItem(int i, GlRendererBuffer::PvsErrorEntry &);
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[496] | 256 | };
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| 257 |
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[1146] | 258 |
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| 259 | /** Abstract class for implmenenting a gl render widget.
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| 260 | */
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| 261 | class GlRenderWidget
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| 262 | {
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| 263 | public:
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| 264 |
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| 265 | GlRenderWidget(SceneGraph *sceneGraph, ViewCellsManager *vcm, KdTree *kdTree):
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| 266 | mSceneGraph(sceneGraph), mViewCellsManager(vcm), mKdTree(kdTree)
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| 267 | {
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| 268 | }
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| 269 |
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| 270 |
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| 271 | GlRenderWidget() {}
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| 272 |
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| 273 | virtual ~GlRenderWidget() {}
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| 274 |
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| 275 | //virtual void Create() {}
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| 276 | virtual void Show() {}
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| 277 |
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| 278 |
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| 279 | protected:
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| 280 |
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| 281 |
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| 282 | SceneGraph *mSceneGraph;
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| 283 | ViewCellsManager *mViewCellsManager;
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| 284 | KdTree *mKdTree;
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[608] | 285 | };
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| 286 |
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[1146] | 287 | };
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[492] | 288 |
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[1146] | 289 | #endif |
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