1 | #include "RenderQueue.h"
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2 | #include "SceneEntity.h"
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3 | #include "Geometry.h"
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4 | #include "Texture.h"
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5 | #include "Material.h"
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6 | #include "Camera.h"
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7 | #include "Shape.h"
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8 |
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9 |
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10 | using namespace std;
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11 |
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12 |
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13 | namespace CHCDemoEngine
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14 | {
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15 |
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16 |
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17 | inline static bool CompDist(RenderQueueBucket *b1, RenderQueueBucket *b2)
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18 | {
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19 | return (b1->mMinDistance < b2->mMinDistance);
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20 | }
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21 |
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22 |
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23 |
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24 | RenderQueue::RenderQueue():
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25 | mState(NULL),
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26 | mMinSizeForSorting(3),
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27 | mCamera(NULL),
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28 | mNumEntries(0)
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29 | {
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30 | }
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31 |
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32 |
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33 | RenderQueue::RenderQueue(RenderState *state, Camera *cam):
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34 | mState(state),
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35 | mMinSizeForSorting(3),
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36 | mCamera(cam),
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37 | mNumEntries(0)
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38 | {
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39 | }
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40 |
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41 |
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42 | RenderQueue::~RenderQueue()
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43 | {
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44 | for (size_t i = 0; i < mBuckets.size(); ++ i)
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45 | {
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46 | DEL_PTR(mBuckets[i]);
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47 | }
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48 | }
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49 |
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50 |
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51 | bool RenderQueue::FitsInBucket(Shape *shape, size_t idx) const
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52 | {
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53 | Technique *tech = shape->GetMaterial()->GetDefaultTechnique();
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54 |
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55 | // test if entity belongs to this bucket
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56 | // note: rather slows down the application for some reason!!
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57 | if (tech->IsAlphaTestEnabled() != mBuckets[idx]->mAlphaTestEnabled) { cout << "a"; return false; }
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58 | if (tech->IsCullFaceEnabled() != mBuckets[idx]->mCullFaceEnabled) { cout << "b"; return false; }
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59 | if (tech->IsColorWriteEnabled() != mBuckets[idx]->mColorWriteEnabled) { cout << "c"; return false; }
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60 | if (tech->IsLightingEnabled() != mBuckets[idx]->mLightingEnabled) { cout << "d"; return false; }
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61 | if (tech->IsDepthWriteEnabled() != mBuckets[idx]->mDepthWriteEnabled) { cout << "e"; return false; }
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62 |
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63 | const bool hasTexture = (tech->GetTexture() != NULL);
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64 |
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65 | if (hasTexture != mBuckets[idx]->mHasTexture) { cout << "f"; return false; }
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66 |
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67 | if (hasTexture)
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68 | {
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69 | if (tech->GetTexture()->GetWidth() != mBuckets[idx]->mTexWidth) { cout << "g"; return false; }
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70 | if (tech->GetTexture()->GetHeight() != mBuckets[idx]->mTexHeight) { cout << "h"; return false; }
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71 | if (tech->GetTexture()->GetFormat() != mBuckets[idx]->mTexFormat) { cout << "i"; return false; }
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72 | }
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73 |
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74 | if (!tech->GetFragmentProgram() && mBuckets[idx]->mHasFragmentProgram) { cout << "j"; return false; }
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75 | if (!tech->GetVertexProgram() && mBuckets[idx]->mHasVertexProgram) { cout << "h"; return false; }
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76 |
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77 |
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78 | return true;
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79 | }
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80 |
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81 |
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82 | void RenderQueue::Enqueue(SceneEntity *entity)
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83 | {
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84 | ShapeContainer::iterator sit, sit_end;
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85 |
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86 | entity->GetCurrentLODLevel(sit, sit_end);
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87 |
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88 | for (; sit != sit_end; ++ sit)
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89 | {
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90 | Enqueue(*sit);
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91 | }
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92 | }
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93 |
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94 |
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95 | void RenderQueue::Enqueue(Shape *shape)
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96 | {
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97 | RenderQueueBucket *bucket;
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98 | ++ mNumEntries;
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99 |
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100 | if (shape->mRenderQueueBucket)
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101 | {
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102 | bucket = shape->mRenderQueueBucket;
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103 | }
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104 | else
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105 | {
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106 | bool bucketFound = false;
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107 |
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108 | size_t i = 0;
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109 |
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110 | for (; i < mBuckets.size(); ++ i)
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111 | {
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112 | if (bucketFound = FitsInBucket(shape, i))
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113 | break;
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114 | }
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115 |
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116 | // create new bucket
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117 | if (!bucketFound)
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118 | {
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119 | RenderQueueBucket *bucket = new RenderQueueBucket();
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120 | bucket->mMinDistance = -1;
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121 |
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122 | Technique *tech = shape->GetMaterial()->GetDefaultTechnique();
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123 |
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124 | bucket->mAlphaTestEnabled = tech->IsAlphaTestEnabled();
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125 | bucket->mCullFaceEnabled = tech->IsCullFaceEnabled();
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126 |
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127 | bucket->mColorWriteEnabled = tech->IsColorWriteEnabled();
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128 | bucket->mLightingEnabled = tech->IsLightingEnabled();
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129 | bucket->mDepthWriteEnabled = tech->IsDepthWriteEnabled();
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130 |
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131 |
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132 | Texture *tex = tech->GetTexture();
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133 |
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134 | if (tex != NULL)
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135 | {
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136 | bucket->mHasTexture = true;
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137 |
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138 | bucket->mTexWidth = tex->GetWidth();
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139 | bucket->mTexHeight = tex->GetHeight();
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140 |
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141 | bucket->mTexFormat = tex->GetFormat();
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142 | }
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143 | else
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144 | {
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145 | bucket->mHasTexture = false;
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146 |
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147 | bucket->mTexWidth = 0;
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148 | bucket->mTexHeight = 0;
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149 | bucket->mTexFormat = 0;
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150 | }
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151 |
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152 | bucket->mHasVertexProgram = tech->GetVertexProgram() != NULL;
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153 | bucket->mHasFragmentProgram = tech->GetFragmentProgram() != NULL;
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154 |
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155 | mBuckets.push_back(bucket);
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156 |
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157 | cout << "num buckets: " << (int)mBuckets.size() << endl;
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158 | }
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159 |
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160 | bucket = mBuckets[i];
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161 | shape->mRenderQueueBucket = bucket;
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162 | }
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163 |
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164 | if (bucket->mMinDistance < .0f)
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165 | {
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166 | // assume that the incoming nodes are ordered by distance
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167 | // => set min dist on first incoming node
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168 | const Vector3 v = shape->GetCenter() - mCamera->GetPosition();
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169 |
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170 | const float dist = SqrMagnitude(v);
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171 | bucket->mMinDistance = dist;
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172 | }
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173 |
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174 | bucket->mShapes.push_back(shape);
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175 | }
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176 |
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177 |
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178 | void RenderQueue::Clear()
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179 | {
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180 | for (size_t i = 0; i < mBuckets.size(); ++ i)
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181 | {
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182 | mBuckets[i]->mMinDistance = -1;
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183 | mBuckets[i]->mShapes.clear();
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184 | }
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185 |
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186 | mNumEntries = 0;
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187 | }
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188 |
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189 |
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190 | void RenderQueue::SetRenderState(RenderState *state)
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191 | {
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192 | mState = state;
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193 | }
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194 |
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195 |
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196 | void RenderQueue::Render()
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197 | {
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198 | // sort the buckets
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199 | Sort();
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200 |
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201 | // render all buckets
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202 | for (size_t i = 0; i < mBuckets.size(); ++ i)
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203 | {
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204 | ShapeContainer::const_iterator sit, sit_end = mBuckets[i]->mShapes.end();
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205 |
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206 | for (sit = mBuckets[i]->mShapes.begin(); sit != sit_end; ++ sit)
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207 | {
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208 | Shape *shape = *sit;
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209 | shape->Render(mState);
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210 | }
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211 | }
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212 | //Print();
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213 | }
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214 |
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215 |
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216 | void RenderQueue::Print()
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217 | {
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218 | for (size_t i = 0; i < mBuckets.size(); ++ i)
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219 | {
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220 | Debug << "\n******\nbucket " << (int)i << endl;
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221 |
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222 | ShapeContainer::const_iterator sit, sit_end = mBuckets[i]->mShapes.end();
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223 |
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224 | for (sit = mBuckets[i]->mShapes.begin(); sit != sit_end; ++ sit)
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225 | {
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226 | Shape *shape = *sit;
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227 |
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228 | Technique *tech = shape->GetMaterial()->GetDefaultTechnique();
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229 | int tsize = tech->GetTexture() ? tech->GetTexture()->GetByteSize() : 0;
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230 |
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231 | float dist = SqrMagnitude(shape->GetBoundingBox().Center() - mCamera->GetPosition());
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232 |
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233 | Debug << "e: " << shape << " a: " << tech->IsAlphaTestEnabled() << " s: " << tsize << " d: " << dist << " " << endl;
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234 | }
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235 | }
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236 | }
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237 |
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238 |
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239 | void RenderQueue::Sort()
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240 | {
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241 | // sort buckets itself
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242 | sort(mBuckets.begin(), mBuckets.end(), CompDist);
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243 | }
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244 |
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245 |
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246 | void RenderQueue::Apply()
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247 | {
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248 | Render();
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249 | Clear();
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250 | }
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251 |
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252 |
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253 | } |
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