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Cycles: Add Saw option to the wave texture

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This commit adds "Bands Saw" and "Rings Saw" to the options for the Wave texture node in Cycles, behaving similar to the Saw option in BI textures.
Requested by @cekuhnen on BA.

Reviewers: dingto, sergey

Subscribers: cekuhnen

Differential Revision: https://developer.blender.org/D1699
This commit is contained in:
Lukas Stockner
2015-12-29 14:42:49 +01:00
parent 1991ee1738
commit 5c682a901b
9 changed files with 66 additions and 10 deletions
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15
intern/cycles/kernel/svm/svm_wave.h
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@@ -18,7 +18,7 @@ CCL_NAMESPACE_BEGIN
/* Wave */
ccl_device_noinline float svm_wave(NodeWaveType type, float3 p, float detail, float distortion, float dscale)
ccl_device_noinline float svm_wave(NodeWaveType type, NodeWaveProfile profile, float3 p, float detail, float distortion, float dscale)
{
float n;
@@ -26,11 +26,18 @@ ccl_device_noinline float svm_wave(NodeWaveType type, float3 p, float detail, fl
n = (p.x + p.y + p.z) * 10.0f;
else /* NODE_WAVE_RINGS */
n = len(p) * 20.0f;
if(distortion != 0.0f)
n += distortion * noise_turbulence(p*dscale, detail, 0);
return 0.5f + 0.5f * sinf(n);
if(profile == NODE_WAVE_PROFILE_SIN) {
return 0.5f + 0.5f * sinf(n);
}
else { /* NODE_WAVE_PROFILE_SAW */
n /= M_2PI_F;
n -= (int) n;
return (n < 0.0f)? n + 1.0f: n;
}
}
ccl_device void svm_node_tex_wave(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
@@ -49,7 +56,7 @@ ccl_device void svm_node_tex_wave(KernelGlobals *kg, ShaderData *sd, float *stac
float distortion = stack_load_float_default(stack, distortion_offset, node2.z);
float dscale = stack_load_float_default(stack, dscale_offset, node2.w);
float f = svm_wave((NodeWaveType)type, co*scale, detail, distortion, dscale);
float f = svm_wave((NodeWaveType)type, (NodeWaveProfile)node.w, co*scale, detail, distortion, dscale);
if(stack_valid(fac_offset)) stack_store_float(stack, fac_offset, f);
if(stack_valid(color_offset)) stack_store_float3(stack, color_offset, make_float3(f, f, f));