From: Alok Hota <alok.hota@intel.com>
Date: Wed, 12 Sep 2018 01:01:36 +0000 (-0500)
Subject: swr/rast: add flat shading
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ae436203d90b45fe82aa07f4e4c9d0c8be6a7b13;p=mesa.git

swr/rast: add flat shading

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
---

diff --git a/src/gallium/drivers/swr/rasterizer/common/simdintrin.h b/src/gallium/drivers/swr/rasterizer/common/simdintrin.h
index 5eae34ef4e2..4145ba8dcce 100644
--- a/src/gallium/drivers/swr/rasterizer/common/simdintrin.h
+++ b/src/gallium/drivers/swr/rasterizer/common/simdintrin.h
@@ -305,6 +305,19 @@ static SIMDINLINE simdscalar InterpolateComponentFlat(const float* pInterpBuffer
     return vA;
 }
 
+//////////////////////////////////////////////////////////////////////////
+/// @brief Interpolates a single component (flat shade).
+/// @param pInterpBuffer - pointer to attribute barycentric coeffs
+template <UINT Attrib, UINT Comp, UINT numComponents = 4>
+static SIMDINLINE simdscalari InterpolateComponentFlatInt(const uint32_t* pInterpBuffer)
+{
+    const uint32_t interpA = pInterpBuffer[Attrib * 3 * numComponents + 0 + Comp];
+
+    simdscalari vA = _simd_set1_epi32(interpA);
+
+    return vA;
+}
+
 //////////////////////////////////////////////////////////////////////////
 /// @brief Interpolates a single component.
 /// @param vI - barycentric I