diff options
author | Charlie Jolly <charlie> | 2019-12-07 15:35:07 +0300 |
---|---|---|
committer | Charlie Jolly <mistajolly@gmail.com> | 2019-12-07 15:52:42 +0300 |
commit | 958d0d4236b1cfa600a7f36f6bdc51fdd0d98a97 (patch) | |
tree | 567a1e3209e6302dd784c054b858a8b5fb92bc9f /intern/cycles/kernel/svm | |
parent | 0406eb110332a863811d7fb6228f9a7ca514e022 (diff) |
Shader Nodes: Add Interpolation modes to Map Range node
Modes: Linear interpolation (default), stepped linear, smoothstep and smootherstep.
This also includes an additional option for the **Clamp node** to switch between **Min Max** (default) and **Range** mode.
This was needed to allow clamping when **To Max** is less than **To Min**.
Reviewed By: JacquesLucke, brecht
Differential Revision: https://developer.blender.org/D5827
Diffstat (limited to 'intern/cycles/kernel/svm')
-rw-r--r-- | intern/cycles/kernel/svm/svm_clamp.h | 11 | ||||
-rw-r--r-- | intern/cycles/kernel/svm/svm_map_range.h | 38 | ||||
-rw-r--r-- | intern/cycles/kernel/svm/svm_types.h | 12 |
3 files changed, 56 insertions, 5 deletions
diff --git a/intern/cycles/kernel/svm/svm_clamp.h b/intern/cycles/kernel/svm/svm_clamp.h index a45e70a3f15..a85fd82754e 100644 --- a/intern/cycles/kernel/svm/svm_clamp.h +++ b/intern/cycles/kernel/svm/svm_clamp.h @@ -26,8 +26,8 @@ ccl_device void svm_node_clamp(KernelGlobals *kg, uint result_stack_offset, int *offset) { - uint min_stack_offset, max_stack_offset; - svm_unpack_node_uchar2(parameters_stack_offsets, &min_stack_offset, &max_stack_offset); + uint min_stack_offset, max_stack_offset, type; + svm_unpack_node_uchar3(parameters_stack_offsets, &min_stack_offset, &max_stack_offset, &type); uint4 defaults = read_node(kg, offset); @@ -35,7 +35,12 @@ ccl_device void svm_node_clamp(KernelGlobals *kg, float min = stack_load_float_default(stack, min_stack_offset, defaults.x); float max = stack_load_float_default(stack, max_stack_offset, defaults.y); - stack_store_float(stack, result_stack_offset, clamp(value, min, max)); + if (type == NODE_CLAMP_RANGE && (min > max)) { + stack_store_float(stack, result_stack_offset, clamp(value, max, min)); + } + else { + stack_store_float(stack, result_stack_offset, clamp(value, min, max)); + } } CCL_NAMESPACE_END diff --git a/intern/cycles/kernel/svm/svm_map_range.h b/intern/cycles/kernel/svm/svm_map_range.h index f2a68adbe61..533a631c837 100644 --- a/intern/cycles/kernel/svm/svm_map_range.h +++ b/intern/cycles/kernel/svm/svm_map_range.h @@ -18,32 +18,66 @@ CCL_NAMESPACE_BEGIN /* Map Range Node */ +ccl_device_inline float smootherstep(float edge0, float edge1, float x) +{ + x = clamp(safe_divide((x - edge0), (edge1 - edge0)), 0.0f, 1.0f); + return x * x * x * (x * (x * 6.0f - 15.0f) + 10.0f); +} + ccl_device void svm_node_map_range(KernelGlobals *kg, ShaderData *sd, float *stack, uint value_stack_offset, uint parameters_stack_offsets, - uint result_stack_offset, + uint results_stack_offsets, int *offset) { uint from_min_stack_offset, from_max_stack_offset, to_min_stack_offset, to_max_stack_offset; + uint type_stack_offset, steps_stack_offset, result_stack_offset; svm_unpack_node_uchar4(parameters_stack_offsets, &from_min_stack_offset, &from_max_stack_offset, &to_min_stack_offset, &to_max_stack_offset); + svm_unpack_node_uchar3( + results_stack_offsets, &type_stack_offset, &steps_stack_offset, &result_stack_offset); uint4 defaults = read_node(kg, offset); + uint4 defaults2 = read_node(kg, offset); float value = stack_load_float(stack, value_stack_offset); float from_min = stack_load_float_default(stack, from_min_stack_offset, defaults.x); float from_max = stack_load_float_default(stack, from_max_stack_offset, defaults.y); float to_min = stack_load_float_default(stack, to_min_stack_offset, defaults.z); float to_max = stack_load_float_default(stack, to_max_stack_offset, defaults.w); + float steps = stack_load_float_default(stack, steps_stack_offset, defaults2.x); float result; + if (from_max != from_min) { - result = to_min + ((value - from_min) / (from_max - from_min)) * (to_max - to_min); + float factor = value; + switch (type_stack_offset) { + default: + case NODE_MAP_RANGE_LINEAR: + factor = (value - from_min) / (from_max - from_min); + break; + case NODE_MAP_RANGE_STEPPED: { + factor = (value - from_min) / (from_max - from_min); + factor = (steps > 0.0f) ? floorf(factor * (steps + 1.0f)) / steps : 0.0f; + break; + } + case NODE_MAP_RANGE_SMOOTHSTEP: { + factor = (from_min > from_max) ? 1.0f - smoothstep(from_max, from_min, factor) : + smoothstep(from_min, from_max, factor); + break; + } + case NODE_MAP_RANGE_SMOOTHERSTEP: { + factor = (from_min > from_max) ? 1.0f - smootherstep(from_max, from_min, factor) : + smootherstep(from_min, from_max, factor); + break; + } + } + result = to_min + factor * (to_max - to_min); } else { result = 0.0f; diff --git a/intern/cycles/kernel/svm/svm_types.h b/intern/cycles/kernel/svm/svm_types.h index 8e312a515d6..040e7c6a0f8 100644 --- a/intern/cycles/kernel/svm/svm_types.h +++ b/intern/cycles/kernel/svm/svm_types.h @@ -325,6 +325,18 @@ typedef enum NodeVectorMathType { NODE_VECTOR_MATH_MAXIMUM, } NodeVectorMathType; +typedef enum NodeClampType { + NODE_CLAMP_MINMAX, + NODE_CLAMP_RANGE, +} NodeClampType; + +typedef enum NodeMapRangeType { + NODE_MAP_RANGE_LINEAR, + NODE_MAP_RANGE_STEPPED, + NODE_MAP_RANGE_SMOOTHSTEP, + NODE_MAP_RANGE_SMOOTHERSTEP, +} NodeMapRangeType; + typedef enum NodeMappingType { NODE_MAPPING_TYPE_POINT, NODE_MAPPING_TYPE_TEXTURE, |