diff options
Diffstat (limited to 'source/blender/draw/engines/image/image_space_node.hh')
| -rw-r--r-- | source/blender/draw/engines/image/image_space_node.hh | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/source/blender/draw/engines/image/image_space_node.hh b/source/blender/draw/engines/image/image_space_node.hh new file mode 100644 index 00000000000..e70aaaebf84 --- /dev/null +++ b/source/blender/draw/engines/image/image_space_node.hh @@ -0,0 +1,139 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Copyright 2021, Blender Foundation. + */ + +/** \file + * \ingroup draw_engine + */ + +#pragma once + +#include "image_private.hh" + +namespace blender::draw::image_engine { + +class SpaceNodeAccessor : public AbstractSpaceAccessor { + SpaceNode *snode; + + public: + SpaceNodeAccessor(SpaceNode *snode) : snode(snode) + { + } + + Image *get_image(Main *bmain) override + { + return BKE_image_ensure_viewer(bmain, IMA_TYPE_COMPOSITE, "Viewer Node"); + } + + ImageUser *get_image_user() override + { + return nullptr; + } + + ImBuf *acquire_image_buffer(Image *image, void **lock) override + { + return BKE_image_acquire_ibuf(image, nullptr, lock); + } + + void release_buffer(Image *image, ImBuf *ibuf, void *lock) override + { + BKE_image_release_ibuf(image, ibuf, lock); + } + + bool has_view_override() const override + { + return true; + } + + DRWView *create_view_override(const ARegion *region) override + { + /* Setup a screen pixel view. The backdrop of the node editor doesn't follow the region. */ + float winmat[4][4], viewmat[4][4]; + orthographic_m4(viewmat, 0.0, region->winx, 0.0, region->winy, 0.0, 1.0); + unit_m4(winmat); + return DRW_view_create(viewmat, winmat, nullptr, nullptr, nullptr); + } + + void get_shader_parameters(ShaderParameters &r_shader_parameters, + ImBuf *ibuf, + bool UNUSED(is_tiled)) override + { + if ((snode->flag & SNODE_USE_ALPHA) != 0) { + /* Show RGBA */ + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHOW_ALPHA | IMAGE_DRAW_FLAG_APPLY_ALPHA; + } + else if ((snode->flag & SNODE_SHOW_ALPHA) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHUFFLING; + copy_v4_fl4(r_shader_parameters.shuffle, 0.0f, 0.0f, 0.0f, 1.0f); + } + else if ((snode->flag & SNODE_SHOW_R) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHUFFLING; + if (IMB_alpha_affects_rgb(ibuf)) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_APPLY_ALPHA; + } + copy_v4_fl4(r_shader_parameters.shuffle, 1.0f, 0.0f, 0.0f, 0.0f); + } + else if ((snode->flag & SNODE_SHOW_G) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHUFFLING; + if (IMB_alpha_affects_rgb(ibuf)) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_APPLY_ALPHA; + } + copy_v4_fl4(r_shader_parameters.shuffle, 0.0f, 1.0f, 0.0f, 0.0f); + } + else if ((snode->flag & SNODE_SHOW_B) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHUFFLING; + if (IMB_alpha_affects_rgb(ibuf)) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_APPLY_ALPHA; + } + copy_v4_fl4(r_shader_parameters.shuffle, 0.0f, 0.0f, 1.0f, 0.0f); + } + else /* RGB */ { + if (IMB_alpha_affects_rgb(ibuf)) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_APPLY_ALPHA; + } + } + } + + void get_gpu_textures(Image *image, + ImageUser *iuser, + ImBuf *ibuf, + GPUTexture **r_gpu_texture, + bool *r_owns_texture, + GPUTexture **r_tex_tile_data) override + { + *r_gpu_texture = BKE_image_get_gpu_texture(image, iuser, ibuf); + *r_owns_texture = false; + *r_tex_tile_data = nullptr; + } + + void get_image_mat(const ImBuf *image_buffer, + const ARegion *region, + float r_mat[4][4]) const override + { + unit_m4(r_mat); + const float ibuf_width = image_buffer->x; + const float ibuf_height = image_buffer->y; + + r_mat[0][0] = ibuf_width * snode->zoom; + r_mat[1][1] = ibuf_height * snode->zoom; + r_mat[3][0] = (region->winx - snode->zoom * ibuf_width) / 2 + snode->xof; + r_mat[3][1] = (region->winy - snode->zoom * ibuf_height) / 2 + snode->yof; + } +}; + +} // namespace blender::draw::image_engine + |