diff options
Diffstat (limited to 'source/blender/blenkernel/intern/image_gpu.cc')
| -rw-r--r-- | source/blender/blenkernel/intern/image_gpu.cc | 1018 |
1 files changed, 1018 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/image_gpu.cc b/source/blender/blenkernel/intern/image_gpu.cc new file mode 100644 index 00000000000..4440e4b101a --- /dev/null +++ b/source/blender/blenkernel/intern/image_gpu.cc @@ -0,0 +1,1018 @@ +/* + * 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. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + */ + +/** \file + * \ingroup bke + */ + +#include "MEM_guardedalloc.h" + +#include "BLI_bitmap.h" +#include "BLI_boxpack_2d.h" +#include "BLI_linklist.h" +#include "BLI_listbase.h" +#include "BLI_threads.h" + +#include "DNA_image_types.h" +#include "DNA_userdef_types.h" + +#include "IMB_colormanagement.h" +#include "IMB_imbuf.h" +#include "IMB_imbuf_types.h" + +#include "BKE_global.h" +#include "BKE_image.h" +#include "BKE_main.h" + +#include "GPU_capabilities.h" +#include "GPU_state.h" +#include "GPU_texture.h" + +#include "PIL_time.h" + +/* Prototypes. */ +static void gpu_free_unused_buffers(); +static void image_free_gpu(Image *ima, const bool immediate); +static void image_free_gpu_limited_scale(Image *ima); +static void image_update_gputexture_ex( + Image *ima, ImageTile *tile, ImBuf *ibuf, int x, int y, int w, int h); + +/* Internal structs. */ +#define IMA_PARTIAL_REFRESH_TILE_SIZE 256 +struct ImagePartialRefresh { + struct ImagePartialRefresh *next, *prev; + int tile_x; + int tile_y; +}; + +bool BKE_image_has_gpu_texture_premultiplied_alpha(Image *image, ImBuf *ibuf) +{ + if (image) { + /* Render result and compositor output are always premultiplied */ + if (ELEM(image->type, IMA_TYPE_R_RESULT, IMA_TYPE_COMPOSITE)) { + return true; + } + /* Generated images use pre multiplied float buffer, but straight alpha for byte buffers. */ + if (image->type == IMA_TYPE_UV_TEST && ibuf) { + return ibuf->rect_float != nullptr; + } + } + if (ibuf) { + if (ibuf->rect_float) { + return image ? (image->alpha_mode != IMA_ALPHA_STRAIGHT) : false; + } + + return image ? (image->alpha_mode == IMA_ALPHA_PREMUL) : true; + } + return false; +} + +/* -------------------------------------------------------------------- */ +/** \name UDIM GPU Texture + * \{ */ + +static bool is_over_resolution_limit(int w, int h, bool limit_gl_texture_size) +{ + return (w > GPU_texture_size_with_limit(w, limit_gl_texture_size) || + h > GPU_texture_size_with_limit(h, limit_gl_texture_size)); +} + +static int smaller_power_of_2_limit(int num, bool limit_gl_texture_size) +{ + return power_of_2_min_i(GPU_texture_size_with_limit(num, limit_gl_texture_size)); +} + +static GPUTexture *gpu_texture_create_tile_mapping( + Image *ima, const int multiview_eye, const eImageTextureResolution texture_resolution) +{ + const int resolution = (texture_resolution == IMA_TEXTURE_RESOLUTION_LIMITED) ? 1 : 0; + GPUTexture *tilearray = ima->gputexture[TEXTARGET_2D_ARRAY][multiview_eye][resolution]; + + if (tilearray == nullptr) { + return nullptr; + } + + float array_w = GPU_texture_width(tilearray); + float array_h = GPU_texture_height(tilearray); + + /* Determine maximum tile number. */ + BKE_image_sort_tiles(ima); + ImageTile *last_tile = (ImageTile *)ima->tiles.last; + int max_tile = last_tile->tile_number - 1001; + + /* create image */ + int width = max_tile + 1; + float *data = (float *)MEM_callocN(width * 8 * sizeof(float), __func__); + for (int i = 0; i < width; i++) { + data[4 * i] = -1.0f; + } + LISTBASE_FOREACH (ImageTile *, tile, &ima->tiles) { + int i = tile->tile_number - 1001; + ImageTile_RuntimeTextureSlot *tile_runtime = &tile->runtime.slots[resolution]; + data[4 * i] = tile_runtime->tilearray_layer; + + float *tile_info = &data[4 * width + 4 * i]; + tile_info[0] = tile_runtime->tilearray_offset[0] / array_w; + tile_info[1] = tile_runtime->tilearray_offset[1] / array_h; + tile_info[2] = tile_runtime->tilearray_size[0] / array_w; + tile_info[3] = tile_runtime->tilearray_size[1] / array_h; + } + + GPUTexture *tex = GPU_texture_create_1d_array(ima->id.name + 2, width, 2, 1, GPU_RGBA32F, data); + GPU_texture_mipmap_mode(tex, false, false); + + MEM_freeN(data); + + return tex; +} + +struct PackTile { + FixedSizeBoxPack boxpack; + ImageTile *tile; + float pack_score; +}; + +static int compare_packtile(const void *a, const void *b) +{ + const PackTile *tile_a = (const PackTile *)a; + const PackTile *tile_b = (const PackTile *)b; + + return tile_a->pack_score < tile_b->pack_score; +} + +static GPUTexture *gpu_texture_create_tile_array(Image *ima, + ImBuf *main_ibuf, + const eImageTextureResolution texture_resolution) +{ + const bool limit_gl_texture_size = texture_resolution == IMA_TEXTURE_RESOLUTION_LIMITED; + const int resolution = texture_resolution == IMA_TEXTURE_RESOLUTION_LIMITED ? 1 : 0; + int arraywidth = 0, arrayheight = 0; + ListBase boxes = {nullptr}; + + LISTBASE_FOREACH (ImageTile *, tile, &ima->tiles) { + ImageUser iuser; + BKE_imageuser_default(&iuser); + iuser.tile = tile->tile_number; + ImBuf *ibuf = BKE_image_acquire_ibuf(ima, &iuser, nullptr); + + if (ibuf) { + PackTile *packtile = (PackTile *)MEM_callocN(sizeof(PackTile), __func__); + packtile->tile = tile; + packtile->boxpack.w = ibuf->x; + packtile->boxpack.h = ibuf->y; + + if (is_over_resolution_limit( + packtile->boxpack.w, packtile->boxpack.h, limit_gl_texture_size)) { + packtile->boxpack.w = smaller_power_of_2_limit(packtile->boxpack.w, limit_gl_texture_size); + packtile->boxpack.h = smaller_power_of_2_limit(packtile->boxpack.h, limit_gl_texture_size); + } + arraywidth = max_ii(arraywidth, packtile->boxpack.w); + arrayheight = max_ii(arrayheight, packtile->boxpack.h); + + /* We sort the tiles by decreasing size, with an additional penalty term + * for high aspect ratios. This improves packing efficiency. */ + float w = packtile->boxpack.w, h = packtile->boxpack.h; + packtile->pack_score = max_ff(w, h) / min_ff(w, h) * w * h; + + BKE_image_release_ibuf(ima, ibuf, nullptr); + BLI_addtail(&boxes, packtile); + } + } + + BLI_assert(arraywidth > 0 && arrayheight > 0); + + BLI_listbase_sort(&boxes, compare_packtile); + int arraylayers = 0; + /* Keep adding layers until all tiles are packed. */ + while (boxes.first != nullptr) { + ListBase packed = {nullptr}; + BLI_box_pack_2d_fixedarea(&boxes, arraywidth, arrayheight, &packed); + BLI_assert(packed.first != nullptr); + + LISTBASE_FOREACH (PackTile *, packtile, &packed) { + ImageTile *tile = packtile->tile; + ImageTile_RuntimeTextureSlot *tile_runtime = &tile->runtime.slots[resolution]; + int *tileoffset = tile_runtime->tilearray_offset; + int *tilesize = tile_runtime->tilearray_size; + + tileoffset[0] = packtile->boxpack.x; + tileoffset[1] = packtile->boxpack.y; + tilesize[0] = packtile->boxpack.w; + tilesize[1] = packtile->boxpack.h; + tile_runtime->tilearray_layer = arraylayers; + } + + BLI_freelistN(&packed); + arraylayers++; + } + + const bool use_high_bitdepth = (ima->flag & IMA_HIGH_BITDEPTH); + /* Create Texture without content. */ + GPUTexture *tex = IMB_touch_gpu_texture( + ima->id.name + 2, main_ibuf, arraywidth, arrayheight, arraylayers, use_high_bitdepth); + + /* Upload each tile one by one. */ + LISTBASE_FOREACH (ImageTile *, tile, &ima->tiles) { + ImageTile_RuntimeTextureSlot *tile_runtime = &tile->runtime.slots[resolution]; + int tilelayer = tile_runtime->tilearray_layer; + int *tileoffset = tile_runtime->tilearray_offset; + int *tilesize = tile_runtime->tilearray_size; + + if (tilesize[0] == 0 || tilesize[1] == 0) { + continue; + } + + ImageUser iuser; + BKE_imageuser_default(&iuser); + iuser.tile = tile->tile_number; + ImBuf *ibuf = BKE_image_acquire_ibuf(ima, &iuser, nullptr); + + if (ibuf) { + const bool store_premultiplied = BKE_image_has_gpu_texture_premultiplied_alpha(ima, ibuf); + IMB_update_gpu_texture_sub(tex, + ibuf, + UNPACK2(tileoffset), + tilelayer, + UNPACK2(tilesize), + use_high_bitdepth, + store_premultiplied); + } + + BKE_image_release_ibuf(ima, ibuf, nullptr); + } + + if (GPU_mipmap_enabled()) { + GPU_texture_generate_mipmap(tex); + GPU_texture_mipmap_mode(tex, true, true); + if (ima) { + ima->gpuflag |= IMA_GPU_MIPMAP_COMPLETE; + } + } + else { + GPU_texture_mipmap_mode(tex, false, true); + } + + return tex; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Regular gpu texture + * \{ */ + +static bool image_max_resolution_texture_fits_in_limited_scale(Image *ima, + eGPUTextureTarget textarget, + const int multiview_eye) +{ + BLI_assert_msg(U.glreslimit != 0, + "limited scale function called without limited scale being set."); + GPUTexture *max_resolution_texture = + ima->gputexture[textarget][multiview_eye][IMA_TEXTURE_RESOLUTION_FULL]; + if (max_resolution_texture && GPU_texture_width(max_resolution_texture) <= U.glreslimit && + GPU_texture_height(max_resolution_texture) <= U.glreslimit) { + return true; + } + return false; +} + +static GPUTexture **get_image_gpu_texture_ptr(Image *ima, + eGPUTextureTarget textarget, + const int multiview_eye, + const eImageTextureResolution texture_resolution) +{ + const bool in_range = (textarget >= 0) && (textarget < TEXTARGET_COUNT); + BLI_assert(in_range); + BLI_assert(multiview_eye == 0 || multiview_eye == 1); + const int resolution = (texture_resolution == IMA_TEXTURE_RESOLUTION_LIMITED) ? 1 : 0; + + if (in_range) { + return &(ima->gputexture[textarget][multiview_eye][resolution]); + } + return nullptr; +} + +static GPUTexture *image_gpu_texture_error_create(eGPUTextureTarget textarget) +{ + fprintf(stderr, "GPUTexture: Blender Texture Not Loaded!\n"); + switch (textarget) { + case TEXTARGET_2D_ARRAY: + return GPU_texture_create_error(2, true); + case TEXTARGET_TILE_MAPPING: + return GPU_texture_create_error(1, true); + case TEXTARGET_2D: + default: + return GPU_texture_create_error(2, false); + } +} + +static void image_update_reusable_textures(Image *ima, + eGPUTextureTarget textarget, + const int multiview_eye) +{ + if ((ima->gpuflag & IMA_GPU_HAS_LIMITED_SCALE_TEXTURES) == 0) { + return; + } + + if (ELEM(textarget, TEXTARGET_2D, TEXTARGET_2D_ARRAY)) { + if (image_max_resolution_texture_fits_in_limited_scale(ima, textarget, multiview_eye)) { + image_free_gpu_limited_scale(ima); + } + } +} + +static GPUTexture *image_get_gpu_texture(Image *ima, + ImageUser *iuser, + ImBuf *ibuf, + eGPUTextureTarget textarget) +{ + if (ima == nullptr) { + return nullptr; + } + + /* Free any unused GPU textures, since we know we are in a thread with OpenGL + * context and might as well ensure we have as much space free as possible. */ + gpu_free_unused_buffers(); + + /* Free GPU textures when requesting a different render pass/layer. + * When `iuser` isn't set (texture painting single image mode) we assume that + * the current `pass` and `layer` should be 0. */ + short requested_pass = iuser ? iuser->pass : 0; + short requested_layer = iuser ? iuser->layer : 0; + short requested_view = iuser ? iuser->multi_index : 0; + /* There is room for 2 multiview textures. When a higher number is requested we should always + * target the first view slot. This is fine as multi view images aren't used together. */ + if (requested_view < 2) { + requested_view = 0; + } + if (ima->gpu_pass != requested_pass || ima->gpu_layer != requested_layer || + ima->gpu_view != requested_view) { + ima->gpu_pass = requested_pass; + ima->gpu_layer = requested_layer; + ima->gpu_view = requested_view; + ima->gpuflag |= IMA_GPU_REFRESH; + } +#undef GPU_FLAGS_TO_CHECK + + /* Check if image has been updated and tagged to be updated (full or partial). */ + ImageTile *tile = BKE_image_get_tile(ima, 0); + if (((ima->gpuflag & IMA_GPU_REFRESH) != 0) || + ((ibuf == nullptr || tile == nullptr) && ((ima->gpuflag & IMA_GPU_PARTIAL_REFRESH) != 0))) { + image_free_gpu(ima, true); + BLI_freelistN(&ima->gpu_refresh_areas); + ima->gpuflag &= ~(IMA_GPU_REFRESH | IMA_GPU_PARTIAL_REFRESH); + } + else if (ima->gpuflag & IMA_GPU_PARTIAL_REFRESH) { + BLI_assert(ibuf); + BLI_assert(tile); + ImagePartialRefresh *refresh_area; + while (( + refresh_area = static_cast<ImagePartialRefresh *>(BLI_pophead(&ima->gpu_refresh_areas)))) { + const int tile_offset_x = refresh_area->tile_x * IMA_PARTIAL_REFRESH_TILE_SIZE; + const int tile_offset_y = refresh_area->tile_y * IMA_PARTIAL_REFRESH_TILE_SIZE; + const int tile_width = MIN2(IMA_PARTIAL_REFRESH_TILE_SIZE, ibuf->x - tile_offset_x); + const int tile_height = MIN2(IMA_PARTIAL_REFRESH_TILE_SIZE, ibuf->y - tile_offset_y); + image_update_gputexture_ex( + ima, tile, ibuf, tile_offset_x, tile_offset_y, tile_width, tile_height); + MEM_freeN(refresh_area); + } + ima->gpuflag &= ~IMA_GPU_PARTIAL_REFRESH; + } + + /* Tag as in active use for garbage collector. */ + BKE_image_tag_time(ima); + + /* Test if we already have a texture. */ + int current_view = iuser ? iuser->multi_index : 0; + if (current_view >= 2) { + current_view = 0; + } + const bool limit_resolution = U.glreslimit != 0 && + ((iuser && (iuser->flag & IMA_SHOW_MAX_RESOLUTION) == 0) || + (iuser == nullptr)) && + ((ima->gpuflag & IMA_GPU_REUSE_MAX_RESOLUTION) == 0); + const eImageTextureResolution texture_resolution = limit_resolution ? + IMA_TEXTURE_RESOLUTION_LIMITED : + IMA_TEXTURE_RESOLUTION_FULL; + GPUTexture **tex = get_image_gpu_texture_ptr(ima, textarget, current_view, texture_resolution); + if (*tex) { + return *tex; + } + + /* Check if we have a valid image. If not, we return a dummy + * texture with zero bind-code so we don't keep trying. */ + if (tile == nullptr) { + *tex = image_gpu_texture_error_create(textarget); + return *tex; + } + + /* check if we have a valid image buffer */ + ImBuf *ibuf_intern = ibuf; + if (ibuf_intern == nullptr) { + ibuf_intern = BKE_image_acquire_ibuf(ima, iuser, nullptr); + if (ibuf_intern == nullptr) { + *tex = image_gpu_texture_error_create(textarget); + return *tex; + } + } + + if (textarget == TEXTARGET_2D_ARRAY) { + *tex = gpu_texture_create_tile_array(ima, ibuf_intern, texture_resolution); + } + else if (textarget == TEXTARGET_TILE_MAPPING) { + *tex = gpu_texture_create_tile_mapping( + ima, iuser ? iuser->multiview_eye : 0, texture_resolution); + } + else { + const bool use_high_bitdepth = (ima->flag & IMA_HIGH_BITDEPTH); + const bool store_premultiplied = BKE_image_has_gpu_texture_premultiplied_alpha(ima, + ibuf_intern); + + *tex = IMB_create_gpu_texture( + ima->id.name + 2, ibuf_intern, use_high_bitdepth, store_premultiplied, limit_resolution); + + if (*tex) { + GPU_texture_wrap_mode(*tex, true, false); + + if (GPU_mipmap_enabled()) { + GPU_texture_generate_mipmap(*tex); + if (ima) { + ima->gpuflag |= IMA_GPU_MIPMAP_COMPLETE; + } + GPU_texture_mipmap_mode(*tex, true, true); + } + else { + GPU_texture_mipmap_mode(*tex, false, true); + } + } + } + + switch (texture_resolution) { + case IMA_TEXTURE_RESOLUTION_LIMITED: + ima->gpuflag |= IMA_GPU_HAS_LIMITED_SCALE_TEXTURES; + break; + + case IMA_TEXTURE_RESOLUTION_FULL: + image_update_reusable_textures(ima, textarget, current_view); + break; + + case IMA_TEXTURE_RESOLUTION_LEN: + BLI_assert_unreachable(); + break; + } + + /* if `ibuf` was given, we don't own the `ibuf_intern` */ + if (ibuf == nullptr) { + BKE_image_release_ibuf(ima, ibuf_intern, nullptr); + } + + if (*tex) { + GPU_texture_orig_size_set(*tex, ibuf_intern->x, ibuf_intern->y); + } + + return *tex; +} + +GPUTexture *BKE_image_get_gpu_texture(Image *image, ImageUser *iuser, ImBuf *ibuf) +{ + return image_get_gpu_texture(image, iuser, ibuf, TEXTARGET_2D); +} + +GPUTexture *BKE_image_get_gpu_tiles(Image *image, ImageUser *iuser, ImBuf *ibuf) +{ + return image_get_gpu_texture(image, iuser, ibuf, TEXTARGET_2D_ARRAY); +} + +GPUTexture *BKE_image_get_gpu_tilemap(Image *image, ImageUser *iuser, ImBuf *ibuf) +{ + return image_get_gpu_texture(image, iuser, ibuf, TEXTARGET_TILE_MAPPING); +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Delayed GPU texture free + * + * Image datablocks can be deleted by any thread, but there may not be any active OpenGL context. + * In that case we push them into a queue and free the buffers later. + * \{ */ + +static LinkNode *gpu_texture_free_queue = nullptr; +static ThreadMutex gpu_texture_queue_mutex = BLI_MUTEX_INITIALIZER; + +static void gpu_free_unused_buffers() +{ + if (gpu_texture_free_queue == nullptr) { + return; + } + + BLI_mutex_lock(&gpu_texture_queue_mutex); + + while (gpu_texture_free_queue != nullptr) { + GPUTexture *tex = static_cast<GPUTexture *>(BLI_linklist_pop(&gpu_texture_free_queue)); + GPU_texture_free(tex); + } + + BLI_mutex_unlock(&gpu_texture_queue_mutex); +} + +void BKE_image_free_unused_gpu_textures() +{ + if (BLI_thread_is_main()) { + gpu_free_unused_buffers(); + } +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Deletion + * \{ */ + +static void image_free_gpu(Image *ima, const bool immediate) +{ + for (int eye = 0; eye < 2; eye++) { + for (int i = 0; i < TEXTARGET_COUNT; i++) { + for (int resolution = 0; resolution < IMA_TEXTURE_RESOLUTION_LEN; resolution++) { + if (ima->gputexture[i][eye][resolution] != nullptr) { + if (immediate) { + GPU_texture_free(ima->gputexture[i][eye][resolution]); + } + else { + BLI_mutex_lock(&gpu_texture_queue_mutex); + BLI_linklist_prepend(&gpu_texture_free_queue, ima->gputexture[i][eye][resolution]); + BLI_mutex_unlock(&gpu_texture_queue_mutex); + } + + ima->gputexture[i][eye][resolution] = nullptr; + } + } + } + } + + ima->gpuflag &= ~(IMA_GPU_MIPMAP_COMPLETE | IMA_GPU_HAS_LIMITED_SCALE_TEXTURES); +} + +static void image_free_gpu_limited_scale(Image *ima) +{ + const eImageTextureResolution resolution = IMA_TEXTURE_RESOLUTION_LIMITED; + for (int eye = 0; eye < 2; eye++) { + for (int i = 0; i < TEXTARGET_COUNT; i++) { + if (ima->gputexture[i][eye][resolution] != nullptr) { + GPU_texture_free(ima->gputexture[i][eye][resolution]); + ima->gputexture[i][eye][resolution] = nullptr; + } + } + } + + ima->gpuflag &= ~(IMA_GPU_MIPMAP_COMPLETE | IMA_GPU_HAS_LIMITED_SCALE_TEXTURES); +} + +void BKE_image_free_gputextures(Image *ima) +{ + image_free_gpu(ima, BLI_thread_is_main()); +} + +void BKE_image_free_all_gputextures(Main *bmain) +{ + if (bmain) { + LISTBASE_FOREACH (Image *, ima, &bmain->images) { + BKE_image_free_gputextures(ima); + } + } +} + +void BKE_image_free_anim_gputextures(Main *bmain) +{ + if (bmain) { + LISTBASE_FOREACH (Image *, ima, &bmain->images) { + if (BKE_image_is_animated(ima)) { + BKE_image_free_gputextures(ima); + } + } + } +} + +void BKE_image_free_old_gputextures(Main *bmain) +{ + static int lasttime = 0; + int ctime = (int)PIL_check_seconds_timer(); + + /* + * Run garbage collector once for every collecting period of time + * if textimeout is 0, that's the option to NOT run the collector + */ + if (U.textimeout == 0 || ctime % U.texcollectrate || ctime == lasttime) { + return; + } + + /* of course not! */ + if (G.is_rendering) { + return; + } + + lasttime = ctime; + + LISTBASE_FOREACH (Image *, ima, &bmain->images) { + if ((ima->flag & IMA_NOCOLLECT) == 0 && ctime - ima->lastused > U.textimeout) { + /* If it's in GL memory, deallocate and set time tag to current time + * This gives textures a "second chance" to be used before dying. */ + if (BKE_image_has_opengl_texture(ima)) { + BKE_image_free_gputextures(ima); + ima->lastused = ctime; + } + /* Otherwise, just kill the buffers */ + else { + BKE_image_free_buffers(ima); + } + } + } +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Paint Update + * \{ */ + +static ImBuf *update_do_scale(uchar *rect, + float *rect_float, + int *x, + int *y, + int *w, + int *h, + int limit_w, + int limit_h, + int full_w, + int full_h) +{ + /* Partial update with scaling. */ + float xratio = limit_w / (float)full_w; + float yratio = limit_h / (float)full_h; + + int part_w = *w, part_h = *h; + + /* Find sub coordinates in scaled image. Take ceiling because we will be + * losing 1 pixel due to rounding errors in x,y. */ + *x *= xratio; + *y *= yratio; + *w = (int)ceil(xratio * (*w)); + *h = (int)ceil(yratio * (*h)); + + /* ...but take back if we are over the limit! */ + if (*x + *w > limit_w) { + (*w)--; + } + if (*y + *h > limit_h) { + (*h)--; + } + + /* Scale pixels. */ + ImBuf *ibuf = IMB_allocFromBuffer((uint *)rect, rect_float, part_w, part_h, 4); + IMB_scaleImBuf(ibuf, *w, *h); + + return ibuf; +} + +static void gpu_texture_update_scaled(GPUTexture *tex, + uchar *rect, + float *rect_float, + int full_w, + int full_h, + int x, + int y, + int layer, + const int *tile_offset, + const int *tile_size, + int w, + int h) +{ + ImBuf *ibuf; + if (layer > -1) { + ibuf = update_do_scale( + rect, rect_float, &x, &y, &w, &h, tile_size[0], tile_size[1], full_w, full_h); + + /* Shift to account for tile packing. */ + x += tile_offset[0]; + y += tile_offset[1]; + } + else { + /* Partial update with scaling. */ + int limit_w = GPU_texture_width(tex); + int limit_h = GPU_texture_height(tex); + + ibuf = update_do_scale(rect, rect_float, &x, &y, &w, &h, limit_w, limit_h, full_w, full_h); + } + + void *data = (ibuf->rect_float) ? (void *)(ibuf->rect_float) : (void *)(ibuf->rect); + eGPUDataFormat data_format = (ibuf->rect_float) ? GPU_DATA_FLOAT : GPU_DATA_UBYTE; + + GPU_texture_update_sub(tex, data_format, data, x, y, layer, w, h, 1); + + IMB_freeImBuf(ibuf); +} + +static void gpu_texture_update_unscaled(GPUTexture *tex, + uchar *rect, + float *rect_float, + int x, + int y, + int layer, + const int tile_offset[2], + int w, + int h, + int tex_stride, + int tex_offset) +{ + if (layer > -1) { + /* Shift to account for tile packing. */ + x += tile_offset[0]; + y += tile_offset[1]; + } + + void *data = (rect_float) ? (void *)(rect_float + tex_offset) : (void *)(rect + tex_offset); + eGPUDataFormat data_format = (rect_float) ? GPU_DATA_FLOAT : GPU_DATA_UBYTE; + + /* Partial update without scaling. Stride and offset are used to copy only a + * subset of a possible larger buffer than what we are updating. */ + GPU_unpack_row_length_set(tex_stride); + + GPU_texture_update_sub(tex, data_format, data, x, y, layer, w, h, 1); + /* Restore default. */ + GPU_unpack_row_length_set(0); +} + +static void gpu_texture_update_from_ibuf(GPUTexture *tex, + Image *ima, + ImBuf *ibuf, + ImageTile *tile, + int x, + int y, + int w, + int h, + eImageTextureResolution texture_resolution) +{ + const int resolution = texture_resolution == IMA_TEXTURE_RESOLUTION_LIMITED ? 1 : 0; + bool scaled; + if (tile != nullptr) { + ImageTile_RuntimeTextureSlot *tile_runtime = &tile->runtime.slots[resolution]; + int *tilesize = tile_runtime->tilearray_size; + scaled = (ibuf->x != tilesize[0]) || (ibuf->y != tilesize[1]); + } + else { + scaled = (GPU_texture_width(tex) != ibuf->x) || (GPU_texture_height(tex) != ibuf->y); + } + + if (scaled) { + /* Extra padding to account for bleed from neighboring pixels. */ + const int padding = 4; + const int xmax = min_ii(x + w + padding, ibuf->x); + const int ymax = min_ii(y + h + padding, ibuf->y); + x = max_ii(x - padding, 0); + y = max_ii(y - padding, 0); + w = xmax - x; + h = ymax - y; + } + + /* Get texture data pointers. */ + float *rect_float = ibuf->rect_float; + uchar *rect = (uchar *)ibuf->rect; + int tex_stride = ibuf->x; + int tex_offset = ibuf->channels * (y * ibuf->x + x); + + const bool store_premultiplied = BKE_image_has_gpu_texture_premultiplied_alpha(ima, ibuf); + if (rect_float == nullptr) { + /* Byte pixels. */ + if (!IMB_colormanagement_space_is_data(ibuf->rect_colorspace)) { + const bool compress_as_srgb = !IMB_colormanagement_space_is_scene_linear( + ibuf->rect_colorspace); + + rect = (uchar *)MEM_mallocN(sizeof(uchar[4]) * w * h, __func__); + if (rect == nullptr) { + return; + } + + tex_stride = w; + tex_offset = 0; + + /* Convert to scene linear with sRGB compression, and premultiplied for + * correct texture interpolation. */ + IMB_colormanagement_imbuf_to_byte_texture( + rect, x, y, w, h, ibuf, compress_as_srgb, store_premultiplied); + } + } + else { + /* Float pixels. */ + if (ibuf->channels != 4 || scaled || !store_premultiplied) { + rect_float = (float *)MEM_mallocN(sizeof(float[4]) * w * h, __func__); + if (rect_float == nullptr) { + return; + } + + tex_stride = w; + tex_offset = 0; + + IMB_colormanagement_imbuf_to_float_texture( + rect_float, x, y, w, h, ibuf, store_premultiplied); + } + } + + if (scaled) { + /* Slower update where we first have to scale the input pixels. */ + if (tile != nullptr) { + ImageTile_RuntimeTextureSlot *tile_runtime = &tile->runtime.slots[resolution]; + int *tileoffset = tile_runtime->tilearray_offset; + int *tilesize = tile_runtime->tilearray_size; + int tilelayer = tile_runtime->tilearray_layer; + gpu_texture_update_scaled( + tex, rect, rect_float, ibuf->x, ibuf->y, x, y, tilelayer, tileoffset, tilesize, w, h); + } + else { + gpu_texture_update_scaled( + tex, rect, rect_float, ibuf->x, ibuf->y, x, y, -1, nullptr, nullptr, w, h); + } + } + else { + /* Fast update at same resolution. */ + if (tile != nullptr) { + ImageTile_RuntimeTextureSlot *tile_runtime = &tile->runtime.slots[resolution]; + int *tileoffset = tile_runtime->tilearray_offset; + int tilelayer = tile_runtime->tilearray_layer; + gpu_texture_update_unscaled( + tex, rect, rect_float, x, y, tilelayer, tileoffset, w, h, tex_stride, tex_offset); + } + else { + gpu_texture_update_unscaled( + tex, rect, rect_float, x, y, -1, nullptr, w, h, tex_stride, tex_offset); + } + } + + /* Free buffers if needed. */ + if (rect && rect != (uchar *)ibuf->rect) { + MEM_freeN(rect); + } + if (rect_float && rect_float != ibuf->rect_float) { + MEM_freeN(rect_float); + } + + if (GPU_mipmap_enabled()) { + GPU_texture_generate_mipmap(tex); + } + else { + ima->gpuflag &= ~IMA_GPU_MIPMAP_COMPLETE; + } + + GPU_texture_unbind(tex); +} + +static void image_update_gputexture_ex( + Image *ima, ImageTile *tile, ImBuf *ibuf, int x, int y, int w, int h) +{ + const int eye = 0; + for (int resolution = 0; resolution < IMA_TEXTURE_RESOLUTION_LEN; resolution++) { + GPUTexture *tex = ima->gputexture[TEXTARGET_2D][eye][resolution]; + eImageTextureResolution texture_resolution = static_cast<eImageTextureResolution>(resolution); + /* Check if we need to update the main gputexture. */ + if (tex != nullptr && tile == ima->tiles.first) { + gpu_texture_update_from_ibuf(tex, ima, ibuf, nullptr, x, y, w, h, texture_resolution); + } + + /* Check if we need to update the array gputexture. */ + tex = ima->gputexture[TEXTARGET_2D_ARRAY][eye][resolution]; + if (tex != nullptr) { + gpu_texture_update_from_ibuf(tex, ima, ibuf, tile, x, y, w, h, texture_resolution); + } + } +} + +void BKE_image_update_gputexture(Image *ima, ImageUser *iuser, int x, int y, int w, int h) +{ + ImBuf *ibuf = BKE_image_acquire_ibuf(ima, iuser, nullptr); + ImageTile *tile = BKE_image_get_tile_from_iuser(ima, iuser); + + if ((ibuf == nullptr) || (w == 0) || (h == 0)) { + /* Full reload of texture. */ + BKE_image_free_gputextures(ima); + } + image_update_gputexture_ex(ima, tile, ibuf, x, y, w, h); + BKE_image_release_ibuf(ima, ibuf, nullptr); +} + +void BKE_image_update_gputexture_delayed( + struct Image *ima, struct ImBuf *ibuf, int x, int y, int w, int h) +{ + /* Check for full refresh. */ + if (ibuf && x == 0 && y == 0 && w == ibuf->x && h == ibuf->y) { + ima->gpuflag |= IMA_GPU_REFRESH; + } + /* Check if we can promote partial refresh to a full refresh. */ + if ((ima->gpuflag & (IMA_GPU_REFRESH | IMA_GPU_PARTIAL_REFRESH)) == + (IMA_GPU_REFRESH | IMA_GPU_PARTIAL_REFRESH)) { + ima->gpuflag &= ~IMA_GPU_PARTIAL_REFRESH; + BLI_freelistN(&ima->gpu_refresh_areas); + } + /* Image is already marked for complete refresh. */ + if (ima->gpuflag & IMA_GPU_REFRESH) { + return; + } + + /* Schedule the tiles that covers the requested area. */ + const int start_tile_x = x / IMA_PARTIAL_REFRESH_TILE_SIZE; + const int start_tile_y = y / IMA_PARTIAL_REFRESH_TILE_SIZE; + const int end_tile_x = (x + w) / IMA_PARTIAL_REFRESH_TILE_SIZE; + const int end_tile_y = (y + h) / IMA_PARTIAL_REFRESH_TILE_SIZE; + const int num_tiles_x = (end_tile_x + 1) - (start_tile_x); + const int num_tiles_y = (end_tile_y + 1) - (start_tile_y); + const int num_tiles = num_tiles_x * num_tiles_y; + const bool allocate_on_heap = BLI_BITMAP_SIZE(num_tiles) > 16; + BLI_bitmap *requested_tiles = nullptr; + if (allocate_on_heap) { + requested_tiles = BLI_BITMAP_NEW(num_tiles, __func__); + } + else { + requested_tiles = BLI_BITMAP_NEW_ALLOCA(num_tiles); + } + + /* Mark the tiles that have already been requested. They don't need to be requested again. */ + int num_tiles_not_scheduled = num_tiles; + LISTBASE_FOREACH (ImagePartialRefresh *, area, &ima->gpu_refresh_areas) { + if (area->tile_x < start_tile_x || area->tile_x > end_tile_x || area->tile_y < start_tile_y || + area->tile_y > end_tile_y) { + continue; + } + int requested_tile_index = (area->tile_x - start_tile_x) + + (area->tile_y - start_tile_y) * num_tiles_x; + BLI_BITMAP_ENABLE(requested_tiles, requested_tile_index); + num_tiles_not_scheduled--; + if (num_tiles_not_scheduled == 0) { + break; + } + } + + /* Schedule the tiles that aren't requested yet. */ + if (num_tiles_not_scheduled) { + int tile_index = 0; + for (int tile_y = start_tile_y; tile_y <= end_tile_y; tile_y++) { + for (int tile_x = start_tile_x; tile_x <= end_tile_x; tile_x++) { + if (!BLI_BITMAP_TEST_BOOL(requested_tiles, tile_index)) { + ImagePartialRefresh *area = static_cast<ImagePartialRefresh *>( + MEM_mallocN(sizeof(ImagePartialRefresh), __func__)); + area->tile_x = tile_x; + area->tile_y = tile_y; + BLI_addtail(&ima->gpu_refresh_areas, area); + } + tile_index++; + } + } + ima->gpuflag |= IMA_GPU_PARTIAL_REFRESH; + } + if (allocate_on_heap) { + MEM_freeN(requested_tiles); + } +} + +void BKE_image_paint_set_mipmap(Main *bmain, bool mipmap) +{ + LISTBASE_FOREACH (Image *, ima, &bmain->images) { + if (BKE_image_has_opengl_texture(ima)) { + if (ima->gpuflag & IMA_GPU_MIPMAP_COMPLETE) { + for (int a = 0; a < TEXTARGET_COUNT; a++) { + if (ELEM(a, TEXTARGET_2D, TEXTARGET_2D_ARRAY)) { + for (int eye = 0; eye < 2; eye++) { + for (int resolution = 0; resolution < IMA_TEXTURE_RESOLUTION_LEN; resolution++) { + GPUTexture *tex = ima->gputexture[a][eye][resolution]; + if (tex != nullptr) { + GPU_texture_mipmap_mode(tex, mipmap, true); + } + } + } + } + } + } + else { + BKE_image_free_gputextures(ima); + } + } + else { + ima->gpuflag &= ~IMA_GPU_MIPMAP_COMPLETE; + } + } +} + +/** \} */ |