diff options
Diffstat (limited to 'source/blender/nodes/composite/nodes/node_composite_dilate.cc')
| -rw-r--r-- | source/blender/nodes/composite/nodes/node_composite_dilate.cc | 189 |
1 files changed, 17 insertions, 172 deletions
diff --git a/source/blender/nodes/composite/nodes/node_composite_dilate.cc b/source/blender/nodes/composite/nodes/node_composite_dilate.cc index d659c46721d..cc4e09d4d0d 100644 --- a/source/blender/nodes/composite/nodes/node_composite_dilate.cc +++ b/source/blender/nodes/composite/nodes/node_composite_dilate.cc @@ -5,25 +5,20 @@ * \ingroup cmpnodes */ -#include <cmath> - -#include "BLI_array.hh" #include "BLI_assert.h" #include "BLI_math_base.hh" - -#include "DNA_scene_types.h" +#include "BLI_math_vec_types.hh" #include "RNA_access.h" #include "UI_interface.h" #include "UI_resources.h" -#include "RE_pipeline.h" - #include "GPU_shader.h" #include "GPU_state.h" #include "GPU_texture.h" +#include "COM_morphological_distance_feather_weights.hh" #include "COM_node_operation.hh" #include "COM_utilities.hh" @@ -64,161 +59,7 @@ static void node_composit_buts_dilateerode(uiLayout *layout, bContext * /*C*/, P using namespace blender::realtime_compositor; -/* Computes a falloff that is equal to 1 at an input of zero and decrease to zero at an input of 1, - * with the rate of decrease depending on the falloff type. */ -static float compute_distance_falloff(float x, int falloff_type) -{ - x = 1.0f - x; - - switch (falloff_type) { - case PROP_SMOOTH: - return 3.0f * x * x - 2.0f * x * x * x; - case PROP_SPHERE: - return std::sqrt(2.0f * x - x * x); - case PROP_ROOT: - return std::sqrt(x); - case PROP_SHARP: - return x * x; - case PROP_INVSQUARE: - return x * (2.0f - x); - case PROP_LIN: - return x; - default: - BLI_assert_unreachable(); - return x; - } -} - -/* A helper class that computes and caches 1D GPU textures containing the weights of the separable - * Gaussian filter of the given radius as well as an inverse distance falloff of the given type and - * radius. The weights and falloffs are symmetric, because the Gaussian and falloff functions are - * all even functions. Consequently, only the positive half of the filter is computed and the - * shader takes that into consideration. */ -class SymmetricSeparableMorphologicalDistanceFeatherWeights { - private: - int radius_ = 1; - int falloff_type_ = PROP_SMOOTH; - GPUTexture *weights_texture_ = nullptr; - GPUTexture *distance_falloffs_texture_ = nullptr; - - public: - ~SymmetricSeparableMorphologicalDistanceFeatherWeights() - { - if (weights_texture_) { - GPU_texture_free(weights_texture_); - } - - if (distance_falloffs_texture_) { - GPU_texture_free(distance_falloffs_texture_); - } - } - - /* Check if textures containing the weights and distance falloffs were already computed for the - * given distance falloff type and radius. If such textures exists, do nothing, otherwise, free - * the already computed textures and recompute it with the given distance falloff type and - * radius. */ - void update(int radius, int falloff_type) - { - if (weights_texture_ && distance_falloffs_texture_ && falloff_type == falloff_type_ && - radius == radius_) { - return; - } - - radius_ = radius; - falloff_type_ = falloff_type; - - compute_weights(); - compute_distance_falloffs(); - } - - void compute_weights() - { - if (weights_texture_) { - GPU_texture_free(weights_texture_); - } - - /* The size of filter is double the radius plus 1, but since the filter is symmetric, we only - * compute half of it and no doubling happens. We add 1 to make sure the filter size is always - * odd and there is a center weight. */ - const int size = radius_ + 1; - Array<float> weights(size); - - float sum = 0.0f; - - /* First, compute the center weight. */ - const float center_weight = RE_filter_value(R_FILTER_GAUSS, 0.0f); - weights[0] = center_weight; - sum += center_weight; - - /* Second, compute the other weights in the positive direction, making sure to add double the - * weight to the sum of weights because the filter is symmetric and we only loop over half of - * it. Skip the center weight already computed by dropping the front index. */ - const float scale = radius_ > 0.0f ? 1.0f / radius_ : 0.0f; - for (const int i : weights.index_range().drop_front(1)) { - const float weight = RE_filter_value(R_FILTER_GAUSS, i * scale); - weights[i] = weight; - sum += weight * 2.0f; - } - - /* Finally, normalize the weights. */ - for (const int i : weights.index_range()) { - weights[i] /= sum; - } - - weights_texture_ = GPU_texture_create_1d("Weights", size, 1, GPU_R16F, weights.data()); - } - - void compute_distance_falloffs() - { - if (distance_falloffs_texture_) { - GPU_texture_free(distance_falloffs_texture_); - } - - /* The size of the distance falloffs is double the radius plus 1, but since the falloffs are - * symmetric, we only compute half of them and no doubling happens. We add 1 to make sure the - * falloffs size is always odd and there is a center falloff. */ - const int size = radius_ + 1; - Array<float> falloffs(size); - - /* Compute the distance falloffs in the positive direction only, because the falloffs are - * symmetric. */ - const float scale = radius_ > 0.0f ? 1.0f / radius_ : 0.0f; - for (const int i : falloffs.index_range()) { - falloffs[i] = compute_distance_falloff(i * scale, falloff_type_); - } - - distance_falloffs_texture_ = GPU_texture_create_1d( - "Distance Factors", size, 1, GPU_R16F, falloffs.data()); - } - - void bind_weights_as_texture(GPUShader *shader, const char *texture_name) - { - const int texture_image_unit = GPU_shader_get_texture_binding(shader, texture_name); - GPU_texture_bind(weights_texture_, texture_image_unit); - } - - void unbind_weights_as_texture() - { - GPU_texture_unbind(weights_texture_); - } - - void bind_distance_falloffs_as_texture(GPUShader *shader, const char *texture_name) - { - const int texture_image_unit = GPU_shader_get_texture_binding(shader, texture_name); - GPU_texture_bind(distance_falloffs_texture_, texture_image_unit); - } - - void unbind_distance_falloffs_as_texture() - { - GPU_texture_unbind(distance_falloffs_texture_); - } -}; - class DilateErodeOperation : public NodeOperation { - private: - /* Cached symmetric blur weights and distance falloffs for the distance feature method. */ - SymmetricSeparableMorphologicalDistanceFeatherWeights distance_feather_weights_; - public: using NodeOperation::NodeOperation; @@ -414,9 +255,11 @@ class DilateErodeOperation : public NodeOperation { const Result &input_image = get_input("Mask"); input_image.bind_as_texture(shader, "input_tx"); - distance_feather_weights_.update(math::abs(get_distance()), node_storage(bnode()).falloff); - distance_feather_weights_.bind_weights_as_texture(shader, "weights_tx"); - distance_feather_weights_.bind_distance_falloffs_as_texture(shader, "falloffs_tx"); + const MorphologicalDistanceFeatherWeights &weights = + context().cache_manager().get_morphological_distance_feather_weights( + node_storage(bnode()).falloff, math::abs(get_distance())); + weights.bind_weights_as_texture(shader, "weights_tx"); + weights.bind_distance_falloffs_as_texture(shader, "falloffs_tx"); /* We allocate an output image of a transposed size, that is, with a height equivalent to the * width of the input and vice versa. This is done as a performance optimization. The shader @@ -437,8 +280,8 @@ class DilateErodeOperation : public NodeOperation { GPU_shader_unbind(); input_image.unbind_as_texture(); - distance_feather_weights_.unbind_weights_as_texture(); - distance_feather_weights_.unbind_distance_falloffs_as_texture(); + weights.unbind_weights_as_texture(); + weights.unbind_distance_falloffs_as_texture(); GPU_texture_image_unbind(horizontal_pass_result); return horizontal_pass_result; @@ -453,9 +296,11 @@ class DilateErodeOperation : public NodeOperation { const int texture_image_unit = GPU_shader_get_texture_binding(shader, "input_tx"); GPU_texture_bind(horizontal_pass_result, texture_image_unit); - distance_feather_weights_.update(math::abs(get_distance()), node_storage(bnode()).falloff); - distance_feather_weights_.bind_weights_as_texture(shader, "weights_tx"); - distance_feather_weights_.bind_distance_falloffs_as_texture(shader, "falloffs_tx"); + const MorphologicalDistanceFeatherWeights &weights = + context().cache_manager().get_morphological_distance_feather_weights( + node_storage(bnode()).falloff, math::abs(get_distance())); + weights.bind_weights_as_texture(shader, "weights_tx"); + weights.bind_distance_falloffs_as_texture(shader, "falloffs_tx"); const Domain domain = compute_domain(); Result &output_image = get_result("Mask"); @@ -468,8 +313,8 @@ class DilateErodeOperation : public NodeOperation { GPU_shader_unbind(); output_image.unbind_as_image(); - distance_feather_weights_.unbind_weights_as_texture(); - distance_feather_weights_.unbind_distance_falloffs_as_texture(); + weights.unbind_weights_as_texture(); + weights.unbind_distance_falloffs_as_texture(); GPU_texture_unbind(horizontal_pass_result); } @@ -535,7 +380,7 @@ void register_node_type_cmp_dilateerode() cmp_node_type_base(&ntype, CMP_NODE_DILATEERODE, "Dilate/Erode", NODE_CLASS_OP_FILTER); ntype.draw_buttons = file_ns::node_composit_buts_dilateerode; ntype.declare = file_ns::cmp_node_dilate_declare; - node_type_init(&ntype, file_ns::node_composit_init_dilateerode); + ntype.initfunc = file_ns::node_composit_init_dilateerode; node_type_storage( &ntype, "NodeDilateErode", node_free_standard_storage, node_copy_standard_storage); ntype.get_compositor_operation = file_ns::get_compositor_operation; |