OSPRay

- Sampling improvements: - Better performance (lower rendering time and faster convergence) - More pleasing blue noise enabled when the total number of frames to be accumulated is known in advance and set as the targetFrames parameter at the framebuffer - Note a maximum of 64k samples is supported - Improved denoiser image operation: - User-controlled quality levels via parameter quality - Optionally denoise alpha channel as well, enabled via parameter denoiseAlpha - Support half-precision (16 bit float) texture formats OSP_TEXTURE_[RGBA16F|RGB16F|RA16F|R16F] and two-channel 32 bit float textures OSP_TEXTURE_RA32F - New parameter limitIndirectLightSamples for the pathtracer which limits the number of light samples after the first non-specular (i.e., diffuse and glossy) bounce to at most one - Implement MIP Mapping for better texture filtering. If the additional memory per texture needed cannot be spared, applications can disable the generation of MIP maps with device parameter disableMipMapGeneration - The backplate (background texture) is now always sampled at the pixel center and thus not blurred by the pixel filter anymore - Avoid color bleeding across eye-subimages when stereo rendering - Superbuild uses binary packages of Open VKL - Removed Intel ISPCRT dependency (ISPC compiler is still needed): - oneAPI Level Zero Loader is no longer necessary - zeContext and zeDevicedevice parameters are no longer supported - ispcrtContext and ispcrtDevicedevice parameters are no longer supported - Clarify the size of OSP_BOOL to be 1 byte - Fix artifacts occasionally appearing with gpu device - The new minimum versions of dependencies: - Embree v4.3.3 (better error reporting) - Open Image Denoise v2.3 (better image quality with HIGH quality mode, added FAST quality mode) - rkcommon v1.14.0 Click for more details and example images: Braun KS 20 Coffee Maker by cekuhnen rendered with targetFrames=0 (white noise) and with targetFrames=1 (blue noise), and denoised respectively: ──────────────┬────────────────────────────────────┬─────────────────────────────────── │white noise │blue noise ──────────────┼────────────────────────────────────┼─────────────────────────────────── pixelSamples=8│BraunKS20_spp8_white │BraunKS20_spp8_blue ──────────────┼────────────────────────────────────┼─────────────────────────────────── denoised │BraunKS20_spp8_white_denoised │BraunKS20_spp8_blue_denoised ──────────────┴────────────────────────────────────┴─────────────────────────────────── Contemporary Bathroom rendered with pixelSamples=16 and denoised with OSP_DENOISER_QUALITY_LOW, OSP_DENOISER_QUALITY_MEDIUM, and OSP_DENOISER_QUALITY_HIGH: ─────────────────┬────────────────────────┬────────────────────────┬───────────────────────── Bath_spp16 │Bath_spp16_dn_low │Bath_spp16_dn_med │Bath_spp16_dn_high ─────────────────┴────────────────────────┴────────────────────────┴─────────────────────────