diff options
author | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-11-06 23:59:07 +0400 |
---|---|---|
committer | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-11-06 23:59:07 +0400 |
commit | 209cd2574588d79edc8747bc94e329f6c81a3f99 (patch) | |
tree | da167ba2e3ed811d720069eb990259fbb94e27a4 /intern/cycles/kernel | |
parent | 27d647dcf8c5d9ea46133761c899bce0860e0fa2 (diff) |
Cycles OSL: phong_ramp(N, exponent, colors[8]) closure added, which works like
a specular ramp shader. Note this is OSL only still, for experimenting.
Patch by Thomas.
Diffstat (limited to 'intern/cycles/kernel')
-rw-r--r-- | intern/cycles/kernel/CMakeLists.txt | 1 | ||||
-rw-r--r-- | intern/cycles/kernel/closure/bsdf_phong_ramp.h | 140 | ||||
-rw-r--r-- | intern/cycles/kernel/osl/CMakeLists.txt | 1 | ||||
-rw-r--r-- | intern/cycles/kernel/osl/bsdf_phong_ramp.cpp | 115 | ||||
-rw-r--r-- | intern/cycles/kernel/osl/osl_closures.cpp | 3 | ||||
-rw-r--r-- | intern/cycles/kernel/osl/osl_closures.h | 2 | ||||
-rw-r--r-- | intern/cycles/kernel/shaders/stdosl.h | 1 | ||||
-rw-r--r-- | intern/cycles/kernel/svm/svm_bsdf.h | 11 | ||||
-rw-r--r-- | intern/cycles/kernel/svm/svm_types.h | 3 |
9 files changed, 276 insertions, 1 deletions
diff --git a/intern/cycles/kernel/CMakeLists.txt b/intern/cycles/kernel/CMakeLists.txt index 82b0605ab6b..5a570328948 100644 --- a/intern/cycles/kernel/CMakeLists.txt +++ b/intern/cycles/kernel/CMakeLists.txt @@ -51,6 +51,7 @@ set(SRC_CLOSURE_HEADERS closure/bsdf_diffuse.h closure/bsdf_microfacet.h closure/bsdf_oren_nayar.h + closure/bsdf_phong_ramp.h closure/bsdf_reflection.h closure/bsdf_refraction.h closure/bsdf_transparent.h diff --git a/intern/cycles/kernel/closure/bsdf_phong_ramp.h b/intern/cycles/kernel/closure/bsdf_phong_ramp.h new file mode 100644 index 00000000000..a2df77c2d2b --- /dev/null +++ b/intern/cycles/kernel/closure/bsdf_phong_ramp.h @@ -0,0 +1,140 @@ +/* + * Adapted from Open Shading Language with this license: + * + * Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al. + * All Rights Reserved. + * + * Modifications Copyright 2012, 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_PHONG_RAMP_H__ +#define __BSDF_PHONG_RAMP_H__ + +CCL_NAMESPACE_BEGIN + +__device float3 bsdf_phong_ramp_get_color(const ShaderClosure *sc, const float3 colors[8], float pos) +{ + int MAXCOLORS = 8; + + float npos = pos * (float)(MAXCOLORS - 1); + int ipos = (int)npos; + if (ipos >= (MAXCOLORS - 1)) + return colors[MAXCOLORS - 1]; + float offset = npos - (float)ipos; + return colors[ipos] * (1.0f - offset) + colors[ipos+1] * offset; +} + +__device int bsdf_phong_ramp_setup(ShaderClosure *sc) +{ + sc->type = CLOSURE_BSDF_PHONG_RAMP_ID; + return SD_BSDF | SD_BSDF_HAS_EVAL | SD_BSDF_GLOSSY; +} + +__device void bsdf_phong_ramp_blur(ShaderClosure *sc, float roughness) +{ +} + +__device float3 bsdf_phong_ramp_eval_reflect(const ShaderClosure *sc, const float3 colors[8], const float3 I, const float3 omega_in, float *pdf) +{ + float m_exponent = sc->data0; + float cosNI = dot(sc->N, omega_in); + float cosNO = dot(sc->N, I); + + if (cosNI > 0 && cosNO > 0) { + // reflect the view vector + float3 R = (2 * cosNO) * sc->N - I; + float cosRI = dot(R, omega_in); + if (cosRI > 0) { + float cosp = powf(cosRI, m_exponent); + float common = 0.5f * (float) M_1_PI_F * cosp; + float out = cosNI * (m_exponent + 2) * common; + *pdf = (m_exponent + 1) * common; + return bsdf_phong_ramp_get_color(sc, colors, cosp) * out; + } + } + + return make_float3(0.0f, 0.0f, 0.0f); +} + +__device float3 bsdf_phong_ramp_eval_transmit(const ShaderClosure *sc, const float3 colors[8], const float3 I, const float3 omega_in, float *pdf) +{ + return make_float3(0.0f, 0.0f, 0.0f); +} + +__device int bsdf_phong_ramp_sample(const ShaderClosure *sc, const float3 colors[8], 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) +{ + float cosNO = dot(sc->N, I); + float m_exponent = sc->data0; + + if (cosNO > 0) { + // reflect the view vector + float3 R = (2 * cosNO) * sc->N - I; + +#ifdef __RAY_DIFFERENTIALS__ + *domega_in_dx = (2 * dot(sc->N, dIdx)) * sc->N - dIdx; + *domega_in_dy = (2 * dot(sc->N, dIdy)) * sc->N - dIdy; +#endif + + float3 T, B; + make_orthonormals (R, &T, &B); + float phi = 2 * M_PI_F * randu; + float cosTheta = powf(randv, 1 / (m_exponent + 1)); + float sinTheta2 = 1 - cosTheta * cosTheta; + float sinTheta = sinTheta2 > 0 ? sqrtf(sinTheta2) : 0; + *omega_in = (cosf(phi) * sinTheta) * T + + (sinf(phi) * sinTheta) * B + + ( cosTheta) * R; + if (dot(Ng, *omega_in) > 0.0f) + { + // common terms for pdf and eval + float cosNI = dot(sc->N, *omega_in); + // make sure the direction we chose is still in the right hemisphere + if (cosNI > 0) + { + float cosp = powf(cosTheta, m_exponent); + float common = 0.5f * M_1_PI_F * cosp; + *pdf = (m_exponent + 1) * common; + float out = cosNI * (m_exponent + 2) * common; + *eval = bsdf_phong_ramp_get_color(sc, colors, cosp) * out; + +#ifdef __RAY_DIFFERENTIALS__ + // Since there is some blur to this reflection, make the + // derivatives a bit bigger. In theory this varies with the + // exponent but the exact relationship is complex and + // requires more ops than are practical. + *domega_in_dx *= 10; + *domega_in_dy *= 10; +#endif + } + } + } + return LABEL_REFLECT; +} + + +CCL_NAMESPACE_END + +#endif /* __BSDF_PHONG_RAMP_H__ */ diff --git a/intern/cycles/kernel/osl/CMakeLists.txt b/intern/cycles/kernel/osl/CMakeLists.txt index 8938b16a48f..1b1bb558bc9 100644 --- a/intern/cycles/kernel/osl/CMakeLists.txt +++ b/intern/cycles/kernel/osl/CMakeLists.txt @@ -14,6 +14,7 @@ set(INC_SYS set(SRC background.cpp + bsdf_phong_ramp.cpp emissive.cpp osl_closures.cpp osl_services.cpp diff --git a/intern/cycles/kernel/osl/bsdf_phong_ramp.cpp b/intern/cycles/kernel/osl/bsdf_phong_ramp.cpp new file mode 100644 index 00000000000..fb144be7e50 --- /dev/null +++ b/intern/cycles/kernel/osl/bsdf_phong_ramp.cpp @@ -0,0 +1,115 @@ +/* + * 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. + */ + +#include <OpenImageIO/fmath.h> + +#include <OSL/genclosure.h> + +#include "osl_closures.h" + +#include "kernel_types.h" +#include "closure/bsdf_phong_ramp.h" + +CCL_NAMESPACE_BEGIN + +using namespace OSL; + +class PhongRampClosure : public CBSDFClosure { +public: + PhongRampClosure() : CBSDFClosure(LABEL_GLOSSY) {} + Color3 colors[8]; + float3 fcolors[8]; + + size_t memsize() const { return sizeof(*this); } + const char *name() const { return "phong_ramp"; } + + void setup() + { + sc.N = TO_FLOAT3(N); + m_shaderdata_flag = bsdf_phong_ramp_setup(&sc); + + for(int i = 0; i < 8; i++) + fcolors[i] = TO_FLOAT3(colors[i]); + } + + bool mergeable(const ClosurePrimitive *other) const + { + return false; + } + + void blur(float roughness) + { + bsdf_phong_ramp_blur(&sc, roughness); + } + + void print_on(std::ostream &out) const + { + out << name() << " ((" << sc.N[0] << ", " << sc.N[1] << ", " << sc.N[2] << "))"; + } + + float3 eval_reflect(const float3 &omega_out, const float3 &omega_in, float& pdf) const + { + return bsdf_phong_ramp_eval_reflect(&sc, fcolors, omega_out, omega_in, &pdf); + } + + float3 eval_transmit(const float3 &omega_out, const float3 &omega_in, float& pdf) const + { + return bsdf_phong_ramp_eval_transmit(&sc, fcolors, omega_out, omega_in, &pdf); + } + + int sample(const float3 &Ng, + const float3 &omega_out, const float3 &domega_out_dx, const float3 &domega_out_dy, + float randu, float randv, + float3 &omega_in, float3 &domega_in_dx, float3 &domega_in_dy, + float &pdf, float3 &eval) const + { + return bsdf_phong_ramp_sample(&sc, fcolors, Ng, omega_out, domega_out_dx, domega_out_dy, + randu, randv, &eval, &omega_in, &domega_in_dx, &domega_in_dy, &pdf); + } +}; + +ClosureParam *closure_bsdf_phong_ramp_params() +{ + static ClosureParam params[] = { + CLOSURE_VECTOR_PARAM(PhongRampClosure, N), + CLOSURE_FLOAT_PARAM(PhongRampClosure, sc.data0), + CLOSURE_COLOR_ARRAY_PARAM(PhongRampClosure, colors, 8), + CLOSURE_STRING_KEYPARAM("label"), + CLOSURE_FINISH_PARAM(PhongRampClosure) + }; + return params; +} + +CLOSURE_PREPARE(closure_bsdf_phong_ramp_prepare, PhongRampClosure) + +CCL_NAMESPACE_END + diff --git a/intern/cycles/kernel/osl/osl_closures.cpp b/intern/cycles/kernel/osl/osl_closures.cpp index de572d0e585..d42d65608c8 100644 --- a/intern/cycles/kernel/osl/osl_closures.cpp +++ b/intern/cycles/kernel/osl/osl_closures.cpp @@ -48,6 +48,7 @@ #include "closure/bsdf_diffuse.h" #include "closure/bsdf_microfacet.h" #include "closure/bsdf_oren_nayar.h" +#include "closure/bsdf_phong_ramp.h" #include "closure/bsdf_reflection.h" #include "closure/bsdf_refraction.h" #include "closure/bsdf_transparent.h" @@ -192,6 +193,8 @@ void OSLShader::register_closures(OSL::ShadingSystem *ss) closure_holdout_params(), closure_holdout_prepare); register_closure(ss, "ambient_occlusion", id++, closure_ambient_occlusion_params(), closure_ambient_occlusion_prepare); + register_closure(ss, "phong_ramp", id++, + closure_bsdf_phong_ramp_params(), closure_bsdf_phong_ramp_prepare); } CCL_NAMESPACE_END diff --git a/intern/cycles/kernel/osl/osl_closures.h b/intern/cycles/kernel/osl/osl_closures.h index 9137bad58d3..71e9e5ae4fd 100644 --- a/intern/cycles/kernel/osl/osl_closures.h +++ b/intern/cycles/kernel/osl/osl_closures.h @@ -47,11 +47,13 @@ OSL::ClosureParam *closure_emission_params(); OSL::ClosureParam *closure_background_params(); OSL::ClosureParam *closure_holdout_params(); OSL::ClosureParam *closure_ambient_occlusion_params(); +OSL::ClosureParam *closure_bsdf_phong_ramp_params(); void closure_emission_prepare(OSL::RendererServices *, int id, void *data); void closure_background_prepare(OSL::RendererServices *, int id, void *data); void closure_holdout_prepare(OSL::RendererServices *, int id, void *data); void closure_ambient_occlusion_prepare(OSL::RendererServices *, int id, void *data); +void closure_bsdf_phong_ramp_prepare(OSL::RendererServices *, int id, void *data); enum { AmbientOcclusion = 100 diff --git a/intern/cycles/kernel/shaders/stdosl.h b/intern/cycles/kernel/shaders/stdosl.h index c55def2b47a..24c3a50e6f6 100644 --- a/intern/cycles/kernel/shaders/stdosl.h +++ b/intern/cycles/kernel/shaders/stdosl.h @@ -433,6 +433,7 @@ string concat (string a, string b, string c, string d, string e, string f) { closure color diffuse(normal N) BUILTIN; closure color oren_nayar(normal N, float sigma) BUILTIN; +closure color phong_ramp(normal N, float exponent, color colors[8]) BUILTIN; closure color translucent(normal N) BUILTIN; closure color reflection(normal N) BUILTIN; closure color refraction(normal N, float eta) BUILTIN; diff --git a/intern/cycles/kernel/svm/svm_bsdf.h b/intern/cycles/kernel/svm/svm_bsdf.h index 07c20231d54..373710446e5 100644 --- a/intern/cycles/kernel/svm/svm_bsdf.h +++ b/intern/cycles/kernel/svm/svm_bsdf.h @@ -19,6 +19,7 @@ #include "../closure/bsdf_ashikhmin_velvet.h" #include "../closure/bsdf_diffuse.h" #include "../closure/bsdf_oren_nayar.h" +#include "../closure/bsdf_phong_ramp.h" #include "../closure/bsdf_microfacet.h" #include "../closure/bsdf_reflection.h" #include "../closure/bsdf_refraction.h" @@ -44,6 +45,10 @@ __device int svm_bsdf_sample(const ShaderData *sd, const ShaderClosure *sc, floa label = bsdf_oren_nayar_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv, eval, omega_in, &domega_in->dx, &domega_in->dy, pdf); break; + /*case CLOSURE_BSDF_PHONG_RAMP_ID: + label = bsdf_phong_ramp_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv, + eval, omega_in, &domega_in->dx, &domega_in->dy, pdf); + break;*/ case CLOSURE_BSDF_TRANSLUCENT_ID: label = bsdf_translucent_sample(sc, sd->Ng, sd->I, sd->dI.dx, sd->dI.dy, randu, randv, eval, omega_in, &domega_in->dx, &domega_in->dy, pdf); @@ -110,6 +115,9 @@ __device float3 svm_bsdf_eval(const ShaderData *sd, const ShaderClosure *sc, con case CLOSURE_BSDF_OREN_NAYAR_ID: eval = bsdf_oren_nayar_eval_reflect(sc, sd->I, omega_in, pdf); break; + /*case CLOSURE_BSDF_PHONG_RAMP_ID: + eval = bsdf_phong_ramp_eval_reflect(sc, sd->I, omega_in, pdf); + break;*/ case CLOSURE_BSDF_TRANSLUCENT_ID: eval = bsdf_translucent_eval_reflect(sc, sd->I, omega_in, pdf); break; @@ -213,6 +221,9 @@ __device void svm_bsdf_blur(ShaderClosure *sc, float roughness) case CLOSURE_BSDF_OREN_NAYAR_ID: bsdf_oren_nayar_blur(sc, roughness); break; + /*case CLOSURE_BSDF_PHONG_RAMP_ID: + bsdf_phong_ramp_blur(sc, roughness); + break;*/ case CLOSURE_BSDF_TRANSLUCENT_ID: bsdf_translucent_blur(sc, roughness); break; diff --git a/intern/cycles/kernel/svm/svm_types.h b/intern/cycles/kernel/svm/svm_types.h index 54767f3c87f..b41e34ab407 100644 --- a/intern/cycles/kernel/svm/svm_types.h +++ b/intern/cycles/kernel/svm/svm_types.h @@ -320,6 +320,7 @@ typedef enum ClosureType { CLOSURE_BSDF_WARD_ID, CLOSURE_BSDF_ASHIKHMIN_VELVET_ID, CLOSURE_BSDF_WESTIN_SHEEN_ID, + CLOSURE_BSDF_PHONG_RAMP_ID, CLOSURE_BSDF_TRANSMISSION_ID, CLOSURE_BSDF_TRANSLUCENT_ID, @@ -351,7 +352,7 @@ typedef enum ClosureType { /* watch this, being lazy with memory usage */ #define CLOSURE_IS_BSDF(type) (type <= CLOSURE_BSDF_TRANSPARENT_ID) #define CLOSURE_IS_BSDF_DIFFUSE(type) (type >= CLOSURE_BSDF_DIFFUSE_ID && type <= CLOSURE_BSDF_OREN_NAYAR_ID) -#define CLOSURE_IS_BSDF_GLOSSY(type) (type >= CLOSURE_BSDF_GLOSSY_ID && type <= CLOSURE_BSDF_WESTIN_SHEEN_ID) +#define CLOSURE_IS_BSDF_GLOSSY(type) (type >= CLOSURE_BSDF_GLOSSY_ID && type <= CLOSURE_BSDF_PHONG_RAMP_ID) #define CLOSURE_IS_BSDF_TRANSMISSION(type) (type >= CLOSURE_BSDF_TRANSMISSION_ID && type <= CLOSURE_BSDF_SHARP_GLASS_ID) #define CLOSURE_IS_VOLUME(type) (type >= CLOSURE_VOLUME_ID && type <= CLOSURE_VOLUME_ISOTROPIC_ID) #define CLOSURE_IS_EMISSION(type) (type == CLOSURE_EMISSION_ID) |