From 9d0748592425e4ab74bc4d041034c68623a6e1f4 Mon Sep 17 00:00:00 2001
From: Nicolas Pope <nwpope@utu.fi>
Date: Mon, 28 Oct 2019 22:05:10 +0200
Subject: [PATCH] Compute actual z
---
components/renderers/cpp/src/triangle_render.cu | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/components/renderers/cpp/src/triangle_render.cu b/components/renderers/cpp/src/triangle_render.cu
index ccd50b456..21c565ccc 100644
--- a/components/renderers/cpp/src/triangle_render.cu
+++ b/components/renderers/cpp/src/triangle_render.cu
@@ -90,6 +90,17 @@ __device__ static
barycentricCoord.z >= 0.0 && barycentricCoord.z <= 1.0;
}
+ /**
+ * For a given barycentric coordinate, compute the corresponding z position
+ * (i.e. depth) on the triangle.
+ */
+__device__ static
+float getZAtCoordinate(const float3 &barycentricCoord, const float (&tri)[3]) {
+ return (barycentricCoord.x * tri[0]
+ + barycentricCoord.y * tri[1]
+ + barycentricCoord.z * tri[2]);
+}
+
/*
* Convert source screen position to output screen coordinates.
*/
@@ -155,7 +166,8 @@ __device__ static
float new_depth = (maxlen == 0.0f) ? d[0] : (d[0]*dist1 + d[1]*dist2 + d[2]*dist3) / (dist1+dist2+dist3);
//if (new_depth < params.camera.minDepth || new_depth > params.camera.maxDepth) continue;*/
- float new_depth = d[0];
+ //float new_depth = d[0]; //(A > 0) ? (B > 0) ? 6.0f : 5.0f : (B > 0) ? 4.0f : 3.0f;
+ float new_depth = getZAtCoordinate(baryCentricCoordinate, d);
atomicMin(&depth_out(sx,sy), int(new_depth*1000.0f));
}
--
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