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1 #include <string>
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2
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3 #include "GammaControl.h"
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4 #include "Render.h"
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5 #include "OSInfo.h"
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6
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7 #include "mm7_data.h"
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8
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9
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10
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11 //----- (0044F324) --------------------------------------------------------
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12 void GammaController::GetRamp()
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13 {
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14 if (pGammaControl)
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15 ErrD3D(pGammaControl->GetGammaRamp(0, &pDefaultRamp));
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16 else
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17 MessageBoxW(nullptr, L"Gamma control not active", L"E:\\WORK\\MSDEV\\MM7\\MM7\\Code\\GammaControl.cpp:83", 0);
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18 }
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19
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20 //----- (0044F377) --------------------------------------------------------
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21 double GammaController::_44F377(DDGAMMARAMP *a1)
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22 {
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23 double v2; // st7@1
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24 unsigned __int16 *v3; // ecx@1
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25 double v4; // st6@2
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26 double result; // st7@7
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27 signed int v6; // [sp+0h] [bp-8h]@1
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28 signed int v7; // [sp+4h] [bp-4h]@1
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29
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30 v7 = 0;
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31 v2 = 0.0;
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32 v6 = 256;
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33 v3 = a1->green;
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34 do
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35 {
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36 v4 = ((double)*(v3 - 256) + (double)v3[256] + (double)*v3) * 0.000015259022 * 0.33333334;
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37 if ( v4 == 0.0 )
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38 --v6;
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39 else
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40 v2 = v2 + (double)v7 * 0.0039215689 / v4;
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41 ++v7;
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42 ++v3;
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43 }
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44 while ( v7 < 256 );
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45 if ( v6 )
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46 result = v2 / (double)v6;
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47 else
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48 result = 1.0;
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49 return result;
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50 }
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51
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52 //----- (0044F408) --------------------------------------------------------
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53 void GammaController::SetGammaRamp(DDGAMMARAMP *pRamp)
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54 {
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55 if (pGammaControl)
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56 ErrD3D(pGammaControl->SetGammaRamp(0, pRamp));
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57 else
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58 MessageBoxW(nullptr, L"Gamma control not active", L"E:\\WORK\\MSDEV\\MM7\\MM7\\Code\\GammaControl.cpp:120", 0);
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59 }
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60
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61 //----- (0044F45B) --------------------------------------------------------
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62 int GammaController::InitGammaRamp(DDGAMMARAMP *pRamp)
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63 {
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64 unsigned __int16 *v2; // esi@1
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65 double v3; // st7@2
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66 signed __int64 v4; // qax@3
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67 signed int v6; // [sp+Ch] [bp-4h]@1
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68
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69 v6 = 0;
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70 v2 = pRamp->green;
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71 do
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72 {
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73 v3 = (double)v6 * 0.0039215689 * this->fGamma;
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74 if ( v3 >= 1.0 || (v4 = (signed __int64)(v3 * 65535.0), (signed int)v4 > 65535) )
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75 goto LABEL_12;
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76 if ( (signed int)v4 < 0 )
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77 {
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78 LODWORD(v4) = 0;
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79 goto LABEL_8;
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80 }
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81 if ( (signed int)v4 > 65535 )
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82 LABEL_12:
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83 LODWORD(v4) = 65535;
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84 LABEL_8:
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85 ++v6;
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86 v2[256] = v4;
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87 *v2 = v4;
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88 *(v2 - 256) = v4;
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89 ++v2;
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90 }
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91 while ( v6 < 256 );
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92 return v4;
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93 }
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94
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95 //----- (0044F4D9) --------------------------------------------------------
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96 void GammaController::Initialize(float gamma)
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97 {
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98 GammaController *v2; // esi@1
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99 double v3; // st7@3
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100 double v4; // st6@4
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101
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102 v2 = this;
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103 if (pVersion->pVersionInfo.dwPlatformId != VER_PLATFORM_WIN32_NT ||
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104 pVersion->pVersionInfo.dwMajorVersion != 4)
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105 {
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106 InitializeFromSurface(pRenderer->pFrontBuffer4);
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107 v3 = 2.8;
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108 if ( gamma <= 2.8f )
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109 v4 = gamma;
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110 else
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111 v4 = 2.8;
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112 if ( v4 >= 0.1f )
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113 {
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114 if ( gamma <= 2.8f )
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115 v3 = gamma;
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116 }
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117 else
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118 {
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119 v3 = 0.1;
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120 }
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121 v2->fGamma = v3;
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122 InitGammaRamp(&v2->field_60C);
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123 SetGammaRamp(&v2->field_60C);
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124 }
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125 }
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126
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127
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128 //----- (0044F2B2) --------------------------------------------------------
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129 bool GammaController::IsGammaSupported()
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130 {
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131 bool result; // eax@3
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132 HRESULT v1; // eax@4
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133
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134 if ( pVersion->pVersionInfo.dwPlatformId != VER_PLATFORM_WIN32_NT || pVersion->pVersionInfo.dwMajorVersion != 4 )
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135 {
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136 DDCAPS halCaps; // [sp+0h] [bp-180h]@4
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137 memset(&halCaps, 0, sizeof(DDCAPS));
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138 halCaps.dwSize = sizeof(DDCAPS);
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139
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140 ErrD3D(pRenderer->pDirectDraw4->GetCaps(&halCaps, 0));
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141 return (halCaps.dwCaps2 >> 17) & 1;
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142 }
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143 else
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144 return false;
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145 }
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146
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147
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148
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149 //----- (0044F215) --------------------------------------------------------
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150 GammaController::GammaController()
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151 {
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152 static float flt_4D8670_default_gamma = 1.0f;
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153
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154 pGammaControl = nullptr;
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155 fGamma = flt_4D8670_default_gamma;
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156 }
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157
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158
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159
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160 //----- (0044F24B) --------------------------------------------------------
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161 void GammaController::InitializeFromSurface(IDirectDrawSurface4 *a2)
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162 {
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163 GammaController *v2; // esi@1
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164 IDirectDrawGammaControl **v3; // edi@1
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165 IDirectDrawGammaControl *v4; // eax@1
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166
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167 v2 = this;
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168 v3 = &this->pGammaControl;
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169 this->pSurface = a2;
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170 v4 = this->pGammaControl;
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171 if ( v4 )
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172 {
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173 v4->Release();
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174 *v3 = 0;
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175 }
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176 if ( IsGammaSupported() )
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177 {
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178 ErrD3D(a2->QueryInterface(IID_IDirectDrawGammaControl, (LPVOID *)v3));
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179 GetRamp();
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180 memcpy(&v2->field_60C, &v2->pDefaultRamp, 0x600u);
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181 fGamma = _44F377(&v2->field_60C);
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182 }
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183 } |
