[opencl] Move common code before the opencl ifdef

... so that it builds correctly without opencl
qgis · Aug 8, 2018 · 573283f · 573283f
1 parent be5f1fd
commit 573283f
Showing 1 changed file with 26 additions and 0 deletions.
diff --git a/src/core/raster/qgshillshaderenderer.cpp b/src/core/raster/qgshillshaderenderer.cpp
@@ -159,6 +159,32 @@ QgsRasterBlock *QgsHillshadeRenderer::block( int bandNo, const QgsRectangle &ext
   QRgb defaultNodataColor = NODATA_COLOR;
 
 
+  // Common pre-calculated values
+  float cellXSize = static_cast<float>( extent.width() ) / width;
+  float cellYSize = static_cast<float>( extent.height() ) / height;
+  float zenithRad = static_cast<float>( std::max( 0.0, 90 - mLightAngle ) * M_PI / 180.0 );
+  float azimuthRad = static_cast<float>( -1 * mLightAzimuth * M_PI / 180.0 );
+  float cosZenithRad = std::cos( zenithRad );
+  float sinZenithRad = std::sin( zenithRad );
+
+  // For fast formula from GDAL DEM
+  float cos_alt_mul_z = cosZenithRad * static_cast<float>( mZFactor );
+  float cos_az_mul_cos_alt_mul_z = std::cos( azimuthRad ) * cos_alt_mul_z;
+  float sin_az_mul_cos_alt_mul_z = std::sin( azimuthRad ) * cos_alt_mul_z;
+  float cos_az_mul_cos_alt_mul_z_mul_254 = 254.0f * cos_az_mul_cos_alt_mul_z;
+  float sin_az_mul_cos_alt_mul_z_mul_254 = 254.0f * sin_az_mul_cos_alt_mul_z;
+  float square_z = static_cast<float>( mZFactor * mZFactor );
+  float sin_altRadians_mul_254 = 254.0f * sinZenithRad;
+
+  // For multi directional
+  float sin_altRadians_mul_127 = 127.0f * sinZenithRad;
+  // 127.0 * std::cos(225.0 *  M_PI / 180.0) = -32.87001872802012
+  float cos225_az_mul_cos_alt_mul_z_mul_127 = -32.87001872802012f * cos_alt_mul_z;
+  float cos_alt_mul_z_mul_127 = 127.0f * cos_alt_mul_z;
+
+  QRgb defaultNodataColor = NODATA_COLOR;
+
+
 #ifdef HAVE_OPENCL
 
   // Use OpenCL? For now OpenCL is enabled in the default configuration only