cycles builds with -Wdouble-promotion again.

2 files changed, 10 insertions, 10 deletions

diff --git a/intern/cycles/kernel/svm/svm_blackbody.h b/intern/cycles/kernel/svm/svm_blackbody.h
index 3c6e11ca683..c3987f378a4 100644
--- a/intern/cycles/kernel/svm/svm_blackbody.h
+++ b/intern/cycles/kernel/svm/svm_blackbody.h
@@ -42,18 +42,18 @@ __device void svm_node_blackbody(KernelGlobals *kg, ShaderData *sd, float *stack
 	/* Input */
 	float temperature = stack_load_float(stack, temperature_offset);
 
-	if (temperature < BB_DRAPPER) {
+	if (temperature < (float)BB_DRAPPER) {
 		/* just return very very dim red */
 		color_rgb = make_float3(1.0e-6f,0.0f,0.0f);
 	}
-	else if (temperature <= BB_MAX_TABLE_RANGE) {
+	else if (temperature <= (float)BB_MAX_TABLE_RANGE) {
 		/* This is the overall size of the table */
 		const int lookuptablesize = 956;
 		const float lookuptablenormalize = 1.0f/956.0f;
 
 		/* reconstruct a proper index for the table lookup, compared to OSL we don't look up two colors
 		just one (the OSL-lerp is also automatically done for us by "lookup_table_read") */
-		float t = powf((temperature - BB_DRAPPER) * (1.0f / BB_TABLE_SPACING), 1.0f/BB_TABLE_XPOWER);
+		float t = powf((temperature - (float)BB_DRAPPER) * (float)(1.0 / BB_TABLE_SPACING), (float)(1.0 / BB_TABLE_XPOWER));
 
 		int blackbody_table_offset = kernel_data.blackbody.table_offset;
 
diff --git a/intern/cycles/render/blackbody.cpp b/intern/cycles/render/blackbody.cpp
index 467368935d7..72e3e5d938d 100644
--- a/intern/cycles/render/blackbody.cpp
+++ b/intern/cycles/render/blackbody.cpp
@@ -91,7 +91,7 @@ vector<float> blackbody_table()
 	const double c1 = 3.74183e-16; // 2*pi*h*c^2, W*m^2
 	const double c2 = 1.4388e-2;   // h*c/k, m*K
 								   // h is Planck's const, k is Boltzmann's
-	const float dlambda = 5.0f * 1e-9;  // in meters
+	const float dlambda = 5.0f * 1e-9f;  // in meters
 
 	/* Blackbody table from 800 to 12k Kelvin (319 entries (317+2 offset) * 3) */
 	vector<float> blackbody_table(956);
@@ -100,7 +100,7 @@ vector<float> blackbody_table()
 
 	/* ToDo: bring this back to what OSL does with the lastTemperature limit ? */
 	for (int i = 0;  i <= 317;  ++i) {
-		float Temperature = powf (float(i), BB_TABLE_XPOWER) * BB_TABLE_SPACING + BB_DRAPPER;
+		double Temperature = pow((double)i, BB_TABLE_XPOWER) * BB_TABLE_SPACING + BB_DRAPPER;
 		X = 0;
 		Y = 0;
 		Z = 0;
@@ -108,10 +108,10 @@ vector<float> blackbody_table()
 		/* from OSL "spectrum_to_XYZ" */
 		for (int n = 0; n < 81; ++n) {
 			float lambda = 380.0f + 5.0f * n;
-			double wlm = lambda * 1e-9;   // Wavelength in meters
+			double wlm = lambda * 1e-9f;   // Wavelength in meters
 			// N.B. spec_intens returns result in W/m^2 but it's a differential,
 			// needs to be scaled by dlambda!
-			float spec_intens = float((c1 * powf(wlm,-5.0)) / (expf(c2 / (wlm * Temperature)) -1.0f));
+			float spec_intens = float((c1 * pow(wlm, -5.0)) / (exp(c2 / (wlm * Temperature)) -1.0));
 			float Me = spec_intens * dlambda;
 
 			X += Me * cie_colour_match[n][0];
@@ -125,9 +125,9 @@ vector<float> blackbody_table()
 		/* Clamp to zero if values are smaller */
 		col = max(col, make_float3(0.0f, 0.0f, 0.0f));
 
-		col.x = powf(col.x, 1.0f / BB_TABLE_YPOWER);
-		col.y = powf(col.y, 1.0f / BB_TABLE_YPOWER);
-		col.z = powf(col.z, 1.0f / BB_TABLE_YPOWER);
+		col.x = powf(col.x, 1.0 / BB_TABLE_YPOWER);
+		col.y = powf(col.y, 1.0 / BB_TABLE_YPOWER);
+		col.z = powf(col.z, 1.0 / BB_TABLE_YPOWER);
 
 		/* Store in table in RRRGGGBBB format */
 		blackbody_table[i] = col.x;