fix optimal resolution bug, update examples_tests submodule

Author: AnastaZIuk

examples_tests

@@ -20,6 +20,11 @@ struct ProfileProperties
     NBL_CONSTEXPR_STATIC_INLINE uint32_t CDC_MAX_TEXTURE_WIDTH = 15360u;
     NBL_CONSTEXPR_STATIC_INLINE uint32_t CDC_MAX_TEXTURE_HEIGHT = 8640u;
 
+    // TODO: This constraint is hack because the mitsuba loader and its material compiler use Virtual Texturing, and there's some bug with IES not sampling sub 128x128 mip levels
+    // don't want to spend time to fix this since we'll be using descriptor indexing for the next iteration
+    NBL_CONSTEXPR_STATIC_INLINE uint32_t CDC_MIN_TEXTURE_WIDTH = 128u;
+    NBL_CONSTEXPR_STATIC_INLINE uint32_t CDC_MIN_TEXTURE_HEIGHT = 128u;
+
     NBL_CONSTEXPR_STATIC_INLINE uint32_t CDC_DEFAULT_TEXTURE_WIDTH = 1024u;
     NBL_CONSTEXPR_STATIC_INLINE uint32_t CDC_DEFAULT_TEXTURE_HEIGHT = 1024u;
 

include/nbl/builtin/hlsl/ies/profile.hlsl

@@ -19,11 +19,8 @@ core::smart_refctd_ptr<asset::ICPUImageView> CIESProfile::createIESTexture(Execu
         height = properties_t::CDC_MAX_TEXTURE_HEIGHT;
 
     // TODO: If no symmetry (no folding in half and abuse of mirror sampler) make dimensions odd-sized so middle texel taps the south pole
-
-    // TODO: This is hack because the mitsuba loader and its material compiler use Virtual Texturing, and there's some bug with IES not sampling sub 128x128 mip levels
-    // don't want to spend time to fix this since we'll be using descriptor indexing for the next iteration
-    width = core::max(width,128);
-    height = core::max(height,128);
+    width = core::max(width,properties_t::CDC_MIN_TEXTURE_WIDTH);
+    height = core::max(height,properties_t::CDC_MIN_TEXTURE_HEIGHT);
 
     asset::ICPUImage::SCreationParams imgInfo;
     imgInfo.type = asset::ICPUImage::ET_2D;

src/nbl/asset/utils/CIESProfile.cpp

@@ -226,7 +226,9 @@ bool CIESProfileParser::parse(CIESProfile& result)
     {
         const uint32_t maxDimMeasureSize = core::sqrt(FULL_SOLID_ANGLE/smallestRangeSolidAngle);
         result.accessor.properties.optimalIESResolution = decltype(result.accessor.properties.optimalIESResolution){ maxDimMeasureSize, maxDimMeasureSize };
-        result.accessor.properties.optimalIESResolution *= 2u; // safe bias for our bilinear interpolation to work nicely and increase resolution of a profile
+        auto& res = result.accessor.properties.optimalIESResolution *= 2u; // safe bias for our bilinear interpolation to work nicely and increase resolution of a profile
+		res.x = core::max(res.x,CIESProfile::properties_t::CDC_MIN_TEXTURE_WIDTH);
+		res.y = core::max(res.y,CIESProfile::properties_t::CDC_MIN_TEXTURE_HEIGHT);
     }
 
     assert(nonZeroEmissionDomainSize >= 0.f);