Cycles OSL: most closure code is now shared between OSL and SVM. Also fix

transmission pass and filter glossy option.

The BSDF closure class is now more similar to the SVM closures, and includes
some flags and labels that are needed to properly categorize the BSDF's for
render passes. Phong closure is gone for the moment, needs to be adapated to
the new structure still.

1 files changed, 84 insertions, 0 deletions

diff --git a/intern/cycles/kernel/closure/bsdf_reflection.h b/intern/cycles/kernel/closure/bsdf_reflection.h
new file mode 100644
index 00000000000..9356f950d98
--- /dev/null
+++ b/intern/cycles/kernel/closure/bsdf_reflection.h
@@ -0,0 +1,84 @@
+/*
+ * Adapted from Open Shading Language with this license:
+ *
+ * Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al.
+ * All Rights Reserved.
+ *
+ * Modifications Copyright 2011, Blender Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * * Neither the name of Sony Pictures Imageworks nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __BSDF_REFLECTION_H__
+#define __BSDF_REFLECTION_H__
+
+CCL_NAMESPACE_BEGIN
+
+/* REFLECTION */
+
+__device int bsdf_reflection_setup(ShaderClosure *sc)
+{
+	sc->type = CLOSURE_BSDF_REFLECTION_ID;
+	return SD_BSDF;
+}
+
+__device void bsdf_reflection_blur(ShaderClosure *sc, float roughness)
+{
+}
+
+__device float3 bsdf_reflection_eval_reflect(const ShaderClosure *sc, const float3 I, const float3 omega_in, float *pdf)
+{
+	return make_float3(0.0f, 0.0f, 0.0f);
+}
+
+__device float3 bsdf_reflection_eval_transmit(const ShaderClosure *sc, const float3 I, const float3 omega_in, float *pdf)
+{
+	return make_float3(0.0f, 0.0f, 0.0f);
+}
+
+__device int bsdf_reflection_sample(const ShaderClosure *sc, float3 Ng, float3 I, float3 dIdx, float3 dIdy, float randu, float randv, float3 *eval, float3 *omega_in, float3 *domega_in_dx, float3 *domega_in_dy, float *pdf)
+{
+	//const BsdfReflectionClosure *self = (const BsdfReflectionClosure*)sc->data;
+	float3 N = sc->N;
+
+	// only one direction is possible
+	float cosNO = dot(N, I);
+	if(cosNO > 0) {
+		*omega_in = (2 * cosNO) * N - I;
+		if(dot(Ng, *omega_in) > 0) {
+#ifdef __RAY_DIFFERENTIALS__
+			*domega_in_dx = 2 * dot(N, dIdx) * N - dIdx;
+			*domega_in_dy = 2 * dot(N, dIdy) * N - dIdy;
+#endif
+			*pdf = 1;
+			*eval = make_float3(1, 1, 1);
+		}
+	}
+	return LABEL_REFLECT|LABEL_SINGULAR;
+}
+
+CCL_NAMESPACE_END
+
+#endif /* __BSDF_REFLECTION_H__ */
+