diff options
Diffstat (limited to 'source/blender/nodes/composite/nodes/node_composite_directionalblur.cc')
| -rw-r--r-- | source/blender/nodes/composite/nodes/node_composite_directionalblur.cc | 144 |
1 files changed, 141 insertions, 3 deletions
diff --git a/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc b/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc index 3d82ab04fc9..a5a253c2cca 100644 --- a/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc +++ b/source/blender/nodes/composite/nodes/node_composite_directionalblur.cc @@ -5,20 +5,34 @@ * \ingroup cmpnodes */ +#include "BLI_float3x3.hh" +#include "BLI_math_base.hh" +#include "BLI_math_vec_types.hh" +#include "BLI_math_vector.hh" + #include "UI_interface.h" #include "UI_resources.h" +#include "GPU_shader.h" + +#include "COM_node_operation.hh" +#include "COM_utilities.hh" + #include "node_composite_util.hh" namespace blender::nodes::node_composite_directionalblur_cc { +NODE_STORAGE_FUNCS(NodeDBlurData) + static void cmp_node_directional_blur_declare(NodeDeclarationBuilder &b) { - b.add_input<decl::Color>(N_("Image")).default_value({1.0f, 1.0f, 1.0f, 1.0f}); + b.add_input<decl::Color>(N_("Image")) + .default_value({1.0f, 1.0f, 1.0f, 1.0f}) + .compositor_domain_priority(0); b.add_output<decl::Color>(N_("Image")); } -static void node_composit_init_dblur(bNodeTree *UNUSED(ntree), bNode *node) +static void node_composit_init_dblur(bNodeTree * /*ntree*/, bNode *node) { NodeDBlurData *ndbd = MEM_cnew<NodeDBlurData>(__func__); node->storage = ndbd; @@ -27,7 +41,7 @@ static void node_composit_init_dblur(bNodeTree *UNUSED(ntree), bNode *node) ndbd->center_y = 0.5; } -static void node_composit_buts_dblur(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr) +static void node_composit_buts_dblur(uiLayout *layout, bContext * /*C*/, PointerRNA *ptr) { uiLayout *col; @@ -51,6 +65,129 @@ static void node_composit_buts_dblur(uiLayout *layout, bContext *UNUSED(C), Poin uiItemR(layout, ptr, "zoom", UI_ITEM_R_SPLIT_EMPTY_NAME, nullptr, ICON_NONE); } +using namespace blender::realtime_compositor; + +class DirectionalBlurOperation : public NodeOperation { + public: + using NodeOperation::NodeOperation; + + void execute() override + { + if (is_identity()) { + get_input("Image").pass_through(get_result("Image")); + return; + } + + GPUShader *shader = shader_manager().get("compositor_directional_blur"); + GPU_shader_bind(shader); + + /* The number of iterations does not cover the original image, that is, the image with no + * transformation. So add an extra iteration for the original image and put that into + * consideration in the shader. */ + GPU_shader_uniform_1i(shader, "iterations", get_iterations() + 1); + GPU_shader_uniform_mat3_as_mat4(shader, "inverse_transformation", get_transformation().ptr()); + + const Result &input_image = get_input("Image"); + input_image.bind_as_texture(shader, "input_tx"); + + GPU_texture_filter_mode(input_image.texture(), true); + GPU_texture_wrap_mode(input_image.texture(), false, false); + + const Domain domain = compute_domain(); + Result &output_image = get_result("Image"); + output_image.allocate_texture(domain); + output_image.bind_as_image(shader, "output_img"); + + compute_dispatch_threads_at_least(shader, domain.size); + + GPU_shader_unbind(); + output_image.unbind_as_image(); + input_image.unbind_as_texture(); + } + + /* Get the amount of translation that will be applied on each iteration. The translation is in + * the negative x direction rotated in the clock-wise direction, hence the negative sign for the + * rotation and translation vector. */ + float2 get_translation() + { + const float diagonal_length = math::length(float2(get_input("Image").domain().size)); + const float translation_amount = diagonal_length * node_storage(bnode()).distance; + const float3x3 rotation = float3x3::from_rotation(-node_storage(bnode()).angle); + return rotation * float2(-translation_amount / get_iterations(), 0.0f); + } + + /* Get the amount of rotation that will be applied on each iteration. */ + float get_rotation() + { + return node_storage(bnode()).spin / get_iterations(); + } + + /* Get the amount of scale that will be applied on each iteration. The scale is identity when the + * user supplies 0, so we add 1. */ + float2 get_scale() + { + return float2(1.0f + node_storage(bnode()).zoom / get_iterations()); + } + + float2 get_origin() + { + const float2 center = float2(node_storage(bnode()).center_x, node_storage(bnode()).center_y); + return float2(get_input("Image").domain().size) * center; + } + + float3x3 get_transformation() + { + /* Construct the transformation that will be applied on each iteration. */ + const float3x3 transformation = float3x3::from_translation_rotation_scale( + get_translation(), get_rotation(), get_scale()); + /* Change the origin of the transformation to the user-specified origin. */ + const float3x3 origin_transformation = float3x3::from_origin_transformation(transformation, + get_origin()); + /* The shader will transform the coordinates, not the image itself, so take the inverse. */ + return origin_transformation.inverted(); + } + + /* The actual number of iterations is 2 to the power of the user supplied iterations. The power + * is implemented using a bit shift. But also make sure it doesn't exceed the upper limit which + * is the number of diagonal pixels. */ + int get_iterations() + { + const int iterations = 2 << (node_storage(bnode()).iter - 1); + const int upper_limit = math::ceil(math::length(float2(get_input("Image").domain().size))); + return math::min(iterations, upper_limit); + } + + /* Returns true if the operation does nothing and the input can be passed through. */ + bool is_identity() + { + const Result &input = get_input("Image"); + /* Single value inputs can't be blurred and are returned as is. */ + if (input.is_single_value()) { + return true; + } + + /* If any of the following options are non-zero, then the operation is not an identity. */ + if (node_storage(bnode()).distance != 0.0f) { + return false; + } + + if (node_storage(bnode()).spin != 0.0f) { + return false; + } + + if (node_storage(bnode()).zoom != 0.0f) { + return false; + } + + return true; + } +}; + +static NodeOperation *get_compositor_operation(Context &context, DNode node) +{ + return new DirectionalBlurOperation(context, node); +} + } // namespace blender::nodes::node_composite_directionalblur_cc void register_node_type_cmp_dblur() @@ -65,6 +202,7 @@ void register_node_type_cmp_dblur() node_type_init(&ntype, file_ns::node_composit_init_dblur); node_type_storage( &ntype, "NodeDBlurData", node_free_standard_storage, node_copy_standard_storage); + ntype.get_compositor_operation = file_ns::get_compositor_operation; nodeRegisterType(&ntype); } |