| 197 | } |
| 198 | |
| 199 | Color4 Image::getTexelColor(unsigned int x, unsigned int y) const |
| 200 | { |
| 201 | if (x >= _width || y >= _height) |
| 202 | { |
| 203 | throw Exception("Invalid coordinates in getTexelColor"); |
| 204 | } |
| 205 | if (!_resourceBuffer) |
| 206 | { |
| 207 | throw Exception("Invalid resource buffer in getTexelColor"); |
| 208 | } |
| 209 | |
| 210 | if (_baseType == BaseType::FLOAT) |
| 211 | { |
| 212 | float* data = static_cast<float*>(_resourceBuffer) + (y * _width + x) * _channelCount; |
| 213 | if (_channelCount == 4) |
| 214 | { |
| 215 | return Color4(data[0], data[1], data[2], data[3]); |
| 216 | } |
| 217 | else if (_channelCount == 3) |
| 218 | { |
| 219 | return Color4(data[0], data[1], data[2], 1.0f); |
| 220 | } |
| 221 | else if (_channelCount == 2) |
| 222 | { |
| 223 | return Color4(data[0], data[1], 0.0f, 1.0f); |
| 224 | } |
| 225 | else if (_channelCount == 1) |
| 226 | { |
| 227 | return Color4(data[0], data[0], data[0], 1.0f); |
| 228 | } |
| 229 | else |
| 230 | { |
| 231 | throw Exception("Unsupported channel count in getTexelColor"); |
| 232 | } |
| 233 | } |
| 234 | else if (_baseType == BaseType::HALF) |
| 235 | { |
| 236 | Half* data = static_cast<Half*>(_resourceBuffer) + (y * _width + x) * _channelCount; |
| 237 | if (_channelCount == 4) |
| 238 | { |
| 239 | return Color4(data[0], data[1], data[2], data[3]); |
| 240 | } |
| 241 | else if (_channelCount == 3) |
| 242 | { |
| 243 | return Color4(data[0], data[1], data[2], 1.0f); |
| 244 | } |
| 245 | else if (_channelCount == 2) |
| 246 | { |
| 247 | return Color4(data[0], data[1], 0.0f, 1.0f); |
| 248 | } |
| 249 | else if (_channelCount == 1) |
| 250 | { |
| 251 | return Color4(data[0], data[0], data[0], 1.0f); |
| 252 | } |
| 253 | else |
| 254 | { |
| 255 | throw Exception("Unsupported channel count in getTexelColor"); |
| 256 | } |
no test coverage detected