From 7229dfcc59943f025219721701b2bda471a2ae25 Mon Sep 17 00:00:00 2001 From: Ptolemy Date: Fri, 2 Sep 2022 16:12:49 -0700 Subject: SL-17701: PBR: Add support for gltf Alpha MASK (cutoff) --- indra/newview/lldrawpoolpbropaque.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'indra/newview/lldrawpoolpbropaque.cpp') diff --git a/indra/newview/lldrawpoolpbropaque.cpp b/indra/newview/lldrawpoolpbropaque.cpp index 3930e11cf3..9fc3d51cad 100644 --- a/indra/newview/lldrawpoolpbropaque.cpp +++ b/indra/newview/lldrawpoolpbropaque.cpp @@ -95,6 +95,16 @@ void LLDrawPoolPBROpaque::renderDeferred(S32 pass) for (LLCullResult::drawinfo_iterator i = begin; i != end; ++i) { LLDrawInfo* pparams = *i; + LLGLTFMaterial *mat = pparams->mGLTFMaterial; + + // glTF 2.0 Specification 3.9.4. Alpha Coverage + // mAlphaCutoff is only valid for LLGLTFMaterial::ALPHA_MODE_MASK + F32 min_alpha = -1.0; + if (mat->mAlphaMode == LLGLTFMaterial::ALPHA_MODE_MASK) + { + min_alpha = mat->mAlphaCutoff; + } + shader->uniform1f(LLShaderMgr::MINIMUM_ALPHA, min_alpha); if (pparams->mTexture.notNull()) { -- cgit v1.3