diff options
Diffstat (limited to 'source/blender/draw/engines/image/image_space_image.hh')
| -rw-r--r-- | source/blender/draw/engines/image/image_space_image.hh | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/source/blender/draw/engines/image/image_space_image.hh b/source/blender/draw/engines/image/image_space_image.hh new file mode 100644 index 00000000000..7728a963254 --- /dev/null +++ b/source/blender/draw/engines/image/image_space_image.hh @@ -0,0 +1,182 @@ +/* + * 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 SpaceImageAccessor : public AbstractSpaceAccessor { + SpaceImage *sima; + + public: + SpaceImageAccessor(SpaceImage *sima) : sima(sima) + { + } + + Image *get_image(Main *UNUSED(bmain)) override + { + return ED_space_image(sima); + } + + ImageUser *get_image_user() override + { + return &sima->iuser; + } + + ImBuf *acquire_image_buffer(Image *UNUSED(image), void **lock) override + { + return ED_space_image_acquire_buffer(sima, lock, 0); + } + + void release_buffer(Image *UNUSED(image), ImBuf *image_buffer, void *lock) override + { + ED_space_image_release_buffer(sima, image_buffer, lock); + } + + void get_shader_parameters(ShaderParameters &r_shader_parameters, + ImBuf *image_buffer, + bool is_tiled) override + { + const int sima_flag = sima->flag & ED_space_image_get_display_channel_mask(image_buffer); + const bool do_repeat = (!is_tiled) && ((sima->flag & SI_DRAW_TILE) != 0); + SET_FLAG_FROM_TEST(r_shader_parameters.flags, do_repeat, IMAGE_DRAW_FLAG_DO_REPEAT); + SET_FLAG_FROM_TEST(r_shader_parameters.flags, is_tiled, IMAGE_DRAW_FLAG_USE_WORLD_POS); + if ((sima_flag & SI_USE_ALPHA) != 0) { + /* Show RGBA */ + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHOW_ALPHA | IMAGE_DRAW_FLAG_APPLY_ALPHA; + } + else if ((sima_flag & SI_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 ((sima_flag & SI_SHOW_ZBUF) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_DEPTH | IMAGE_DRAW_FLAG_SHUFFLING; + copy_v4_fl4(r_shader_parameters.shuffle, 1.0f, 0.0f, 0.0f, 0.0f); + } + else if ((sima_flag & SI_SHOW_R) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHUFFLING; + if (IMB_alpha_affects_rgb(image_buffer)) { + 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 ((sima_flag & SI_SHOW_G) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHUFFLING; + if (IMB_alpha_affects_rgb(image_buffer)) { + 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 ((sima_flag & SI_SHOW_B) != 0) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_SHUFFLING; + if (IMB_alpha_affects_rgb(image_buffer)) { + 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(image_buffer)) { + r_shader_parameters.flags |= IMAGE_DRAW_FLAG_APPLY_ALPHA; + } + } + } + + bool has_view_override() const override + { + return false; + } + DRWView *create_view_override(const ARegion *UNUSED(region)) override + { + return nullptr; + } + + void get_gpu_textures(Image *image, + ImageUser *iuser, + ImBuf *image_buffer, + GPUTexture **r_gpu_texture, + bool *r_owns_texture, + GPUTexture **r_tex_tile_data) override + { + if (image->rr != nullptr) { + /* Update multi-index and pass for the current eye. */ + BKE_image_multilayer_index(image->rr, iuser); + } + else { + BKE_image_multiview_index(image, iuser); + } + + if (image_buffer == nullptr) { + return; + } + + if (image_buffer->rect == nullptr && image_buffer->rect_float == nullptr) { + /* This code-path is only supposed to happen when drawing a lazily-allocatable render result. + * In all the other cases the `ED_space_image_acquire_buffer()` is expected to return nullptr + * as an image buffer when it has no pixels. */ + + BLI_assert(image->type == IMA_TYPE_R_RESULT); + + float zero[4] = {0, 0, 0, 0}; + *r_gpu_texture = GPU_texture_create_2d(__func__, 1, 1, 0, GPU_RGBA16F, zero); + *r_owns_texture = true; + return; + } + + const int sima_flag = sima->flag & ED_space_image_get_display_channel_mask(image_buffer); + if (sima_flag & SI_SHOW_ZBUF && + (image_buffer->zbuf || image_buffer->zbuf_float || (image_buffer->channels == 1))) { + if (image_buffer->zbuf) { + BLI_assert_msg(0, "Integer based depth buffers not supported"); + } + else if (image_buffer->zbuf_float) { + *r_gpu_texture = GPU_texture_create_2d( + __func__, image_buffer->x, image_buffer->y, 0, GPU_R16F, image_buffer->zbuf_float); + *r_owns_texture = true; + } + else if (image_buffer->rect_float && image_buffer->channels == 1) { + *r_gpu_texture = GPU_texture_create_2d( + __func__, image_buffer->x, image_buffer->y, 0, GPU_R16F, image_buffer->rect_float); + *r_owns_texture = true; + } + } + else if (image->source == IMA_SRC_TILED) { + *r_gpu_texture = BKE_image_get_gpu_tiles(image, iuser, image_buffer); + *r_tex_tile_data = BKE_image_get_gpu_tilemap(image, iuser, nullptr); + *r_owns_texture = false; + } + else { + *r_gpu_texture = BKE_image_get_gpu_texture(image, iuser, image_buffer); + *r_owns_texture = false; + } + } + + void get_image_mat(const ImBuf *UNUSED(image_buffer), + const ARegion *UNUSED(region), + float r_mat[4][4]) const override + { + unit_m4(r_mat); + } +}; + +} // namespace blender::draw::image_engine |