1 | #include "ShaderProgram.h"
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2 | #include "Matrix4x4.h"
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3 |
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4 |
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5 | using namespace std;
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6 |
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7 | namespace CHCDemoEngine
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8 | {
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9 |
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10 |
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11 | GPUProgramParameters::GPUProgramParameters(ShaderProgram *p)
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12 | : mProgram(p)
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13 | {
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14 | }
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15 |
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16 |
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17 | void GPUProgramParameters::Reset()
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18 | {
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19 | mFloats.clear();
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20 | mTextures.clear();
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21 | mMatrices.clear();
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22 | mArrays.clear();
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23 | }
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24 |
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25 |
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26 | void GPUProgramParameters::SetValue1f(int idx, float value)
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27 | {
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28 | if (mFloats.size() < idx + 1)
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29 | mFloats.resize(idx + 1);
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30 |
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31 | mFloats[idx] = FloatParam(&value, 1);
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32 | }
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33 |
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34 |
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35 | void GPUProgramParameters::SetValue2f(int idx, float val1, float val2)
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36 | {
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37 | if (mFloats.size() < idx + 1)
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38 | mFloats.resize(idx + 1);
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39 |
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40 | float vals[] = {val1, val2};
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41 |
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42 | mFloats[idx] = FloatParam(vals, 2);
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43 | }
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44 |
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45 |
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46 | void GPUProgramParameters::SetValue3f(int idx, float val1, float val2, float val3)
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47 | {
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48 | if (mFloats.size() < idx + 1)
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49 | mFloats.resize(idx + 1);
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50 |
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51 | float vals[] = {val1, val2, val3};
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52 |
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53 | mFloats[idx] = FloatParam(vals, 3);
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54 | }
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55 |
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56 |
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57 | void GPUProgramParameters::SetArray1f(int idx, float *vals, int numElements)
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58 | {
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59 | if (mArrays.size() < idx + 1)
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60 | mArrays.resize(idx + 1);
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61 |
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62 | mArrays[idx] = ArrayParam(vals, 1, numElements);
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63 | }
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64 |
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65 |
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66 | void GPUProgramParameters::SetArray2f(int idx, float *vals, int numElements)
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67 | {
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68 | if (mArrays.size() < idx + 1)
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69 | mArrays.resize(idx + 1);
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70 |
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71 | mArrays[idx] = ArrayParam(vals, 2, numElements);
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72 | }
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73 |
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74 |
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75 | void GPUProgramParameters::SetArray3f(int idx, float *vals, int numElements)
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76 | {
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77 | if (mArrays.size() < idx + 1)
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78 | mArrays.resize(idx + 1);
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79 |
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80 | mArrays[idx] = ArrayParam(vals, 3, numElements);
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81 | }
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82 |
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83 |
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84 | void GPUProgramParameters::SetTexture(int idx, unsigned int tex)
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85 | {
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86 | if (mTextures.size() < idx + 1)
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87 | mTextures.resize(idx + 1);
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88 |
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89 | mTextures[idx] = IntParam(tex);
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90 | }
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91 |
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92 |
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93 | void GPUProgramParameters::SetMatrix(int idx, Matrix4x4 *mat)
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94 | {
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95 | if (mMatrices.size() < idx + 1)
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96 | mMatrices.resize(idx + 1);
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97 |
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98 | mMatrices[idx] = MatrixParam(mat);
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99 | }
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100 |
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101 |
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102 | void GPUProgramParameters::SetValue1f(const string &name, float val)
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103 | {
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104 | SetValue1f(mProgram->GetParamIdxByName(name), val);
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105 | }
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106 |
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107 |
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108 | void GPUProgramParameters::SetValue2f(const string &name, float val1, float val2)
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109 | {
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110 | SetValue2f(mProgram->GetParamIdxByName(name), val1, val2);
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111 | }
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112 |
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113 |
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114 | void GPUProgramParameters::SetValue3f(const string &name, float val1, float val2, float val3)
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115 | {
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116 | SetValue3f(mProgram->GetParamIdxByName(name), val1, val2, val3);
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117 | }
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118 |
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119 |
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120 | void GPUProgramParameters::SetArray1f(const string &name, float *vals, int numElements)
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121 | {
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122 | SetArray1f(mProgram->GetParamIdxByName(name), vals, numElements);
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123 | }
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124 |
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125 |
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126 | void GPUProgramParameters::SetArray2f(const string &name, float *vals, int numElements)
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127 | {
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128 | SetArray2f(mProgram->GetParamIdxByName(name), vals, numElements);
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129 | }
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130 |
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131 |
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132 | void GPUProgramParameters::SetArray3f(const string &name, float *vals, int numElements)
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133 | {
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134 | SetArray3f(mProgram->GetParamIdxByName(name), vals, numElements);
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135 | }
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136 |
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137 |
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138 | void GPUProgramParameters::SetMatrix(const string &name, Matrix4x4 *mat)
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139 | {
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140 | SetMatrix(mProgram->GetParamIdxByName(name), mat);
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141 | }
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142 |
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143 |
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144 | void GPUProgramParameters::SetTexture(const string &name, unsigned int tex)
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145 | {
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146 | SetTexture(mProgram->GetParamIdxByName(name), tex);
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147 | }
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148 |
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149 |
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150 | void GPUProgramParameters::UpdateParameters()
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151 | {
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152 | for (int i = 0; i < (int)mFloats.size(); ++ i)
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153 | {
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154 | const FloatParam &p = mFloats[i];
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155 |
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156 | if (!p.mValid) continue;
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157 |
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158 | switch (p.mNumComponents)
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159 | {
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160 | case 1:
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161 | mProgram->SetValue1f(i, p.mValues[0]);
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162 | break;
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163 | case 2:
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164 | mProgram->SetValue2f(i, p.mValues[0], p.mValues[1]);
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165 | break;
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166 | case 3:
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167 | mProgram->SetValue3f(i, p.mValues[0], p.mValues[1], p.mValues[2]);
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168 | break;
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169 | default:
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170 | mProgram->SetValue1f(i, p.mValues[0]);
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171 | }
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172 | }
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173 |
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174 | for (int i = 0; i < (int)mTextures.size(); ++ i)
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175 | {
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176 | const IntParam &p = mTextures[i];
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177 |
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178 | if (p.mValid)
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179 | mProgram->SetTexture(i, p.mValue);
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180 | }
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181 |
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182 | for (int i = 0; i < (int)mMatrices.size(); ++ i)
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183 | {
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184 | const MatrixParam &p = mMatrices[i];
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185 |
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186 | if (p.mValid)
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187 | mProgram->SetMatrix(i, *p.mValue);
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188 | }
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189 |
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190 | for (int i = 0; i < (int)mArrays.size(); ++ i)
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191 | {
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192 | const ArrayParam &p = mArrays[i];
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193 |
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194 | if (!p.mValid) continue;
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195 |
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196 | switch (p.mNumComponents)
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197 | {
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198 | case 1:
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199 | mProgram->SetArray1f(i, p.mValues, p.mNumEntries);
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200 | break;
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201 | case 2:
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202 | mProgram->SetArray2f(i, p.mValues, p.mNumEntries);
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203 | break;
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204 | case 3:
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205 | mProgram->SetArray3f(i, p.mValues, p.mNumEntries);
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206 | break;
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207 | default:
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208 | mProgram->SetArray1f(i, p.mValues, p.mNumEntries);
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209 | }
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210 | }
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211 | }
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212 |
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213 |
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214 |
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215 | /********************************************************/
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216 | /* ShaderProgram implementation */
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217 | /********************************************************/
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218 |
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219 |
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220 | ShaderProgram::ShaderProgram(CGcontext context,
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221 | const std::string &filename,
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222 | CGprofile profile,
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223 | const std::string &functionName)
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224 | {
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225 | mProgram = cgCreateProgramFromFile(context,
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226 | CG_SOURCE,
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227 | filename.c_str(),
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228 | profile,
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229 | functionName.c_str(),
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230 | NULL);
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231 |
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232 | if (mProgram) cgGLLoadProgram(mProgram);
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233 |
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234 | const int maxParams = 64;
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235 | mParameters.resize(maxParams);
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236 |
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237 | for (int i = 0; i < maxParams; ++ i)
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238 | {
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239 | mParameters[i] = NULL;
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240 | }
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241 | }
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242 |
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243 |
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244 | void ShaderProgram::Bind()
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245 | {
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246 | cgGLBindProgram(mProgram);
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247 |
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248 | // enable all texture parameters
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249 | CGParameterArray::const_iterator it, it_end = mTextureParams.end();
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250 |
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251 | for (it = mTextureParams.begin(); it != it_end; ++ it)
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252 | cgGLEnableTextureParameter(*it);
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253 | }
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254 |
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255 |
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256 | /*void ShaderProgram::Release()
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257 | {
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258 | CGParameterArray::const_iterator it, it_end = mTextureParams.end();
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259 |
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260 | // disable all texture parameters
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261 | for (it = mTextureParams.begin(); it != it_end; ++ it)
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262 | cgGLDisableTextureParameter(*it);
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263 | }*/
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264 |
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265 |
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266 | CGparameter ShaderProgram::AddParameter(const string &name, int idx)
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267 | {
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268 | CGparameter p = GetOrCreateParameter(name);
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269 |
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270 | mParamHash[name] = idx;
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271 | mParameters[idx] = p;
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272 |
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273 | return p;
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274 | }
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275 |
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276 |
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277 | CGparameter ShaderProgram::GetOrCreateParameter(const string &name)
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278 | {
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279 | CGparameter p;
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280 | CGParameterMap::const_iterator it = mParamHash.find(name);
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281 |
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282 | if (it == mParamHash.end())
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283 | {
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284 | p = cgGetNamedParameter(mProgram, name.c_str());
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285 | }
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286 | else
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287 | {
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288 | p = mParameters[(*it).second];
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289 | }
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290 |
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291 | //cout << "name: " << name << " " << p << " " << mProgram << endl;
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292 | return p;
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293 | }
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294 |
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295 |
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296 | CGparameter ShaderProgram::GetParameter(int idx) const
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297 | {
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298 | return mParameters[idx];
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299 | }
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300 |
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301 |
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302 | void ShaderProgram::SetValue1f(int idx, float val)
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303 | {
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304 | cgGLSetParameter1f(GetParameter(idx), val);
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305 | }
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306 |
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307 |
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308 | void ShaderProgram::SetValue2f(int idx, float val1, float val2)
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309 | {
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310 | cgGLSetParameter2f(GetParameter(idx), val1, val2);
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311 | }
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312 |
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313 |
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314 | void ShaderProgram::SetValue3f(int idx, float val1, float val2, float val3)
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315 | {
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316 | cgGLSetParameter3f(GetParameter(idx), val1, val2, val3);
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317 | }
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318 |
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319 |
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320 | void ShaderProgram::SetArray1f(int idx, float *vals, int numElements)
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321 | {
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322 | cgGLSetParameterArray1f(GetParameter(idx), 0, numElements, (const float *)vals);
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323 | }
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324 |
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325 |
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326 | void ShaderProgram::SetArray2f(int idx, float *vals, int numElements)
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327 | {
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328 | cgGLSetParameterArray2f(GetParameter(idx), 0, numElements, (const float *)vals);
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329 | }
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330 |
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331 |
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332 | void ShaderProgram::SetArray3f(int idx, float *vals, int numElements)
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333 | {
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334 | cgGLSetParameterArray3f(GetParameter(idx), 0, numElements, (const float *)vals);
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335 | }
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336 |
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337 |
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338 | void ShaderProgram::SetMatrix(int idx, const Matrix4x4 &mat)
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339 | {
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340 | cgGLSetMatrixParameterfc(GetParameter(idx), (const float *)mat.x);
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341 | }
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342 |
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343 |
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344 | void ShaderProgram::SetTexture(int idx, unsigned int tex)
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345 | {
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346 | CGparameter p = GetParameter(idx);
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347 |
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348 | cgGLSetTextureParameter(p, tex);
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349 | cgGLEnableTextureParameter(p);
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350 | }
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351 |
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352 |
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353 | void ShaderProgram::SetValue1f(const string &name, float val)
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354 | {
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355 | cgGLSetParameter1f(GetOrCreateParameter(name), val);
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356 | }
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357 |
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358 |
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359 | void ShaderProgram::SetValue2f(const string &name, float val1, float val2)
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360 | {
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361 | cgGLSetParameter2f(GetOrCreateParameter(name), val1, val2);
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362 | }
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363 |
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364 |
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365 | void ShaderProgram::SetValue3f(const string &name, float val1, float val2, float val3)
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366 | {
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367 | cgGLSetParameter3f(GetOrCreateParameter(name), val1, val2, val3);
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368 | }
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369 |
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370 |
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371 | void ShaderProgram::SetArray1f(const string &name, float *vals, int numElements)
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372 | {
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373 | cgGLSetParameterArray1f(GetOrCreateParameter(name), 0, numElements, (const float *)vals);
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374 | }
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375 |
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376 |
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377 | void ShaderProgram::SetArray2f(const string &name, float *vals, int numElements)
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378 | {
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379 | cgGLSetParameterArray2f(GetOrCreateParameter(name), 0, numElements, (const float *)vals);
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380 | }
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381 |
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382 |
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383 | void ShaderProgram::SetArray3f(const string &name, float *vals, int numElements)
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384 | {
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385 | cgGLSetParameterArray3f(GetOrCreateParameter(name), 0, numElements, (const float *)vals);
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386 | }
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387 |
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388 |
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389 | void ShaderProgram::SetMatrix(const string &name, const Matrix4x4 &mat)
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390 | {
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391 | cgGLSetMatrixParameterfc(GetOrCreateParameter(name), (const float *)mat.x);
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392 | }
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393 |
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394 |
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395 | void ShaderProgram::SetTexture(const string &name, unsigned int tex)
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396 | {
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397 | CGparameter p = GetOrCreateParameter(name);
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398 |
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399 | cgGLSetTextureParameter(p, tex);
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400 | cgGLEnableTextureParameter(p);
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401 |
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402 | mTextureParams.push_back(p);
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403 | }
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404 |
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405 |
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406 | int ShaderProgram::GetParamIdxByName(const std::string &name) const
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407 | {
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408 | CGParameterMap::const_iterator it = mParamHash.find(name);
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409 | return (*it).second;
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410 | }
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411 |
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412 |
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413 | } // namespace |
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