diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_ramp.h')
| -rw-r--r-- | intern/cycles/kernel/svm/svm_ramp.h | 125 |
1 files changed, 59 insertions, 66 deletions
diff --git a/intern/cycles/kernel/svm/svm_ramp.h b/intern/cycles/kernel/svm/svm_ramp.h index 6f39391057e..6084ee35a1f 100644 --- a/intern/cycles/kernel/svm/svm_ramp.h +++ b/intern/cycles/kernel/svm/svm_ramp.h @@ -21,91 +21,84 @@ CCL_NAMESPACE_BEGIN /* NOTE: svm_ramp.h, svm_ramp_util.h and node_ramp_util.h must stay consistent */ -ccl_device_inline float4 rgb_ramp_lookup(KernelGlobals *kg, - int offset, - float f, - bool interpolate, - bool extrapolate, - int table_size) +ccl_device_inline float4 rgb_ramp_lookup( + KernelGlobals *kg, int offset, float f, bool interpolate, bool extrapolate, int table_size) { - if((f < 0.0f || f > 1.0f) && extrapolate) { - float4 t0, dy; - if(f < 0.0f) { - t0 = fetch_node_float(kg, offset); - dy = t0 - fetch_node_float(kg, offset + 1); - f = -f; - } - else { - t0 = fetch_node_float(kg, offset + table_size - 1); - dy = t0 - fetch_node_float(kg, offset + table_size - 2); - f = f - 1.0f; - } - return t0 + dy * f * (table_size-1); - } - - f = saturate(f)*(table_size-1); - - /* clamp int as well in case of NaN */ - int i = clamp(float_to_int(f), 0, table_size-1); - float t = f - (float)i; - - float4 a = fetch_node_float(kg, offset+i); - - if(interpolate && t > 0.0f) - a = (1.0f - t)*a + t*fetch_node_float(kg, offset+i+1); - - return a; + if ((f < 0.0f || f > 1.0f) && extrapolate) { + float4 t0, dy; + if (f < 0.0f) { + t0 = fetch_node_float(kg, offset); + dy = t0 - fetch_node_float(kg, offset + 1); + f = -f; + } + else { + t0 = fetch_node_float(kg, offset + table_size - 1); + dy = t0 - fetch_node_float(kg, offset + table_size - 2); + f = f - 1.0f; + } + return t0 + dy * f * (table_size - 1); + } + + f = saturate(f) * (table_size - 1); + + /* clamp int as well in case of NaN */ + int i = clamp(float_to_int(f), 0, table_size - 1); + float t = f - (float)i; + + float4 a = fetch_node_float(kg, offset + i); + + if (interpolate && t > 0.0f) + a = (1.0f - t) * a + t * fetch_node_float(kg, offset + i + 1); + + return a; } -ccl_device void svm_node_rgb_ramp(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset) +ccl_device void svm_node_rgb_ramp( + KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset) { - uint fac_offset, color_offset, alpha_offset; - uint interpolate = node.z; + uint fac_offset, color_offset, alpha_offset; + uint interpolate = node.z; - decode_node_uchar4(node.y, &fac_offset, &color_offset, &alpha_offset, NULL); + decode_node_uchar4(node.y, &fac_offset, &color_offset, &alpha_offset, NULL); - uint table_size = read_node(kg, offset).x; + uint table_size = read_node(kg, offset).x; - float fac = stack_load_float(stack, fac_offset); - float4 color = rgb_ramp_lookup(kg, *offset, fac, interpolate, false, table_size); + float fac = stack_load_float(stack, fac_offset); + float4 color = rgb_ramp_lookup(kg, *offset, fac, interpolate, false, table_size); - if(stack_valid(color_offset)) - stack_store_float3(stack, color_offset, float4_to_float3(color)); - if(stack_valid(alpha_offset)) - stack_store_float(stack, alpha_offset, color.w); + if (stack_valid(color_offset)) + stack_store_float3(stack, color_offset, float4_to_float3(color)); + if (stack_valid(alpha_offset)) + stack_store_float(stack, alpha_offset, color.w); - *offset += table_size; + *offset += table_size; } -ccl_device void svm_node_curves(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset) +ccl_device void svm_node_curves( + KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset) { - uint fac_offset, color_offset, out_offset; - decode_node_uchar4(node.y, - &fac_offset, - &color_offset, - &out_offset, - NULL); + uint fac_offset, color_offset, out_offset; + decode_node_uchar4(node.y, &fac_offset, &color_offset, &out_offset, NULL); - uint table_size = read_node(kg, offset).x; + uint table_size = read_node(kg, offset).x; - float fac = stack_load_float(stack, fac_offset); - float3 color = stack_load_float3(stack, color_offset); + float fac = stack_load_float(stack, fac_offset); + float3 color = stack_load_float3(stack, color_offset); - const float min_x = __int_as_float(node.z), - max_x = __int_as_float(node.w); - const float range_x = max_x - min_x; - const float3 relpos = (color - make_float3(min_x, min_x, min_x)) / range_x; + const float min_x = __int_as_float(node.z), max_x = __int_as_float(node.w); + const float range_x = max_x - min_x; + const float3 relpos = (color - make_float3(min_x, min_x, min_x)) / range_x; - float r = rgb_ramp_lookup(kg, *offset, relpos.x, true, true, table_size).x; - float g = rgb_ramp_lookup(kg, *offset, relpos.y, true, true, table_size).y; - float b = rgb_ramp_lookup(kg, *offset, relpos.z, true, true, table_size).z; + float r = rgb_ramp_lookup(kg, *offset, relpos.x, true, true, table_size).x; + float g = rgb_ramp_lookup(kg, *offset, relpos.y, true, true, table_size).y; + float b = rgb_ramp_lookup(kg, *offset, relpos.z, true, true, table_size).z; - color = (1.0f - fac)*color + fac*make_float3(r, g, b); - stack_store_float3(stack, out_offset, color); + color = (1.0f - fac) * color + fac * make_float3(r, g, b); + stack_store_float3(stack, out_offset, color); - *offset += table_size; + *offset += table_size; } CCL_NAMESPACE_END -#endif /* __SVM_RAMP_H__ */ +#endif /* __SVM_RAMP_H__ */ |