diff options
Diffstat (limited to 'source/blender/nodes/composite/nodes/node_composite_crop.cc')
| -rw-r--r-- | source/blender/nodes/composite/nodes/node_composite_crop.cc | 171 |
1 files changed, 170 insertions, 1 deletions
diff --git a/source/blender/nodes/composite/nodes/node_composite_crop.cc b/source/blender/nodes/composite/nodes/node_composite_crop.cc index 823e1052dd0..d7331732fc7 100644 --- a/source/blender/nodes/composite/nodes/node_composite_crop.cc +++ b/source/blender/nodes/composite/nodes/node_composite_crop.cc @@ -5,11 +5,22 @@ * \ingroup cmpnodes */ +#include "BLI_math_base.h" +#include "BLI_math_vec_types.hh" + +#include "DNA_node_types.h" + #include "RNA_access.h" #include "UI_interface.h" #include "UI_resources.h" +#include "GPU_shader.h" +#include "GPU_texture.h" + +#include "COM_node_operation.hh" +#include "COM_utilities.hh" + #include "node_composite_util.hh" /* **************** Crop ******************** */ @@ -18,7 +29,9 @@ namespace blender::nodes::node_composite_crop_cc { static void cmp_node_crop_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")); } @@ -54,6 +67,161 @@ static void node_composit_buts_crop(uiLayout *layout, bContext *UNUSED(C), Point } } +using namespace blender::realtime_compositor; + +class CropOperation : public NodeOperation { + public: + using NodeOperation::NodeOperation; + + void execute() override + { + /* The operation does nothing, so just pass the input through. */ + if (is_identity()) { + get_input("Image").pass_through(get_result("Image")); + return; + } + + if (get_is_image_crop()) { + execute_image_crop(); + } + else { + execute_alpha_crop(); + } + } + + /* Crop by replacing areas outside of the cropping bounds with zero alpha. The output have the + * same domain as the input image. */ + void execute_alpha_crop() + { + GPUShader *shader = shader_manager().get("compositor_alpha_crop"); + GPU_shader_bind(shader); + + int2 lower_bound, upper_bound; + compute_cropping_bounds(lower_bound, upper_bound); + GPU_shader_uniform_2iv(shader, "lower_bound", lower_bound); + GPU_shader_uniform_2iv(shader, "upper_bound", upper_bound); + + const Result &input_image = get_input("Image"); + input_image.bind_as_texture(shader, "input_tx"); + + 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); + + input_image.unbind_as_texture(); + output_image.unbind_as_image(); + GPU_shader_unbind(); + } + + /* Crop the image into a new size that matches the cropping bounds. */ + void execute_image_crop() + { + int2 lower_bound, upper_bound; + compute_cropping_bounds(lower_bound, upper_bound); + + /* The image is cropped into nothing, so just return a single zero value. */ + if (lower_bound.x == upper_bound.x || lower_bound.y == upper_bound.y) { + Result &result = get_result("Image"); + result.allocate_invalid(); + return; + } + + GPUShader *shader = shader_manager().get("compositor_image_crop"); + GPU_shader_bind(shader); + + GPU_shader_uniform_2iv(shader, "lower_bound", lower_bound); + + const Result &input_image = get_input("Image"); + input_image.bind_as_texture(shader, "input_tx"); + + const int2 size = upper_bound - lower_bound; + + Result &output_image = get_result("Image"); + output_image.allocate_texture(Domain(size, compute_domain().transformation)); + output_image.bind_as_image(shader, "output_img"); + + compute_dispatch_threads_at_least(shader, size); + + input_image.unbind_as_texture(); + output_image.unbind_as_image(); + GPU_shader_unbind(); + } + + /* If true, the image should actually be cropped into a new size. Otherwise, if false, the region + * outside of the cropping bounds will be set to a zero alpha value. */ + bool get_is_image_crop() + { + return bnode().custom1; + } + + bool get_is_relative() + { + return bnode().custom2; + } + + NodeTwoXYs &get_node_two_xys() + { + return *static_cast<NodeTwoXYs *>(bnode().storage); + } + + /* 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 cropped and are returned as is. */ + if (input.is_single_value()) { + return true; + } + + int2 lower_bound, upper_bound; + compute_cropping_bounds(lower_bound, upper_bound); + const int2 input_size = input.domain().size; + /* The cropping bounds cover the whole image, so no cropping happens. */ + if (lower_bound == int2(0) && upper_bound == input_size) { + return true; + } + + return false; + } + + void compute_cropping_bounds(int2 &lower_bound, int2 &upper_bound) + { + const NodeTwoXYs &node_two_xys = get_node_two_xys(); + const int2 input_size = get_input("Image").domain().size; + + if (get_is_relative()) { + /* The cropping bounds are relative to the image size. The factors are in the [0, 1] range, + * so it is guaranteed that they won't go over the input image size. */ + lower_bound.x = input_size.x * node_two_xys.fac_x1; + lower_bound.y = input_size.y * node_two_xys.fac_y2; + upper_bound.x = input_size.x * node_two_xys.fac_x2; + upper_bound.y = input_size.y * node_two_xys.fac_y1; + } + else { + /* Make sure the bounds don't go over the input image size. */ + lower_bound.x = min_ii(node_two_xys.x1, input_size.x); + lower_bound.y = min_ii(node_two_xys.y2, input_size.y); + upper_bound.x = min_ii(node_two_xys.x2, input_size.x); + upper_bound.y = min_ii(node_two_xys.y1, input_size.y); + } + + /* Make sure upper bound is actually higher than the lower bound. */ + lower_bound.x = min_ii(lower_bound.x, upper_bound.x); + lower_bound.y = min_ii(lower_bound.y, upper_bound.y); + upper_bound.x = max_ii(lower_bound.x, upper_bound.x); + upper_bound.y = max_ii(lower_bound.y, upper_bound.y); + } +}; + +static NodeOperation *get_compositor_operation(Context &context, DNode node) +{ + return new CropOperation(context, node); +} + } // namespace blender::nodes::node_composite_crop_cc void register_node_type_cmp_crop() @@ -67,6 +235,7 @@ void register_node_type_cmp_crop() ntype.draw_buttons = file_ns::node_composit_buts_crop; node_type_init(&ntype, file_ns::node_composit_init_crop); node_type_storage(&ntype, "NodeTwoXYs", node_free_standard_storage, node_copy_standard_storage); + ntype.get_compositor_operation = file_ns::get_compositor_operation; nodeRegisterType(&ntype); } |