bf412ed9dd
This allows users to implement arbitrary camera models using OSL by writing shaders that take an image position as input and compute ray origin and direction. The obvious applications for this are e.g. panorama modes, lens distortion models and realistic lens simulation, but the possibilities are endless. Currently, this is only supported on devices with OSL support, so CPU and OptiX. However, it is independent from the shading model used, so custom cameras can be used without getting the performance hit of OSL shading. A few samples are provided as Text Editor templates. One notable current limitation (in addition to the limited device support) is that inverse mapping is not supported, so Window texture coordinates and the Vector pass will not work with custom cameras. Pull Request: https://projects.blender.org/blender/blender/pulls/129495
99 lines
2.5 KiB
C++
99 lines
2.5 KiB
C++
/* SPDX-FileCopyrightText: 2021 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "BLI_rect.h"
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#include "GPU_framebuffer.hh"
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#include "ED_screen.hh"
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#include "ED_view3d.hh"
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#include "DRW_render.hh"
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#include "RE_pipeline.h"
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#include "eevee_engine.h" /* Own include. */
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#include "draw_view_data.hh"
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#include "eevee_instance.hh"
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namespace blender::eevee {
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DrawEngine *Engine::create_instance()
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{
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return new Instance();
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}
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void Engine::free_static()
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{
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ShaderModule::module_free();
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}
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} // namespace blender::eevee
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using namespace blender::eevee;
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static void eevee_render(RenderEngine *engine, Depsgraph *depsgraph)
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{
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Instance *instance = nullptr;
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auto eevee_render_to_image = [&](RenderEngine *engine, RenderLayer *layer, const rcti /*rect*/) {
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Render *render = engine->re;
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Object *camera_original_ob = RE_GetCamera(engine->re);
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const char *viewname = RE_GetActiveRenderView(engine->re);
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int size[2] = {engine->resolution_x, engine->resolution_y};
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/* WORKAROUND: Fails if created in the parent scope. Must be because of lack of active
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* `DRWContext`. To be revisited. */
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instance = new Instance();
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rctf view_rect;
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rcti rect;
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RE_GetViewPlane(render, &view_rect, &rect);
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rcti visible_rect = rect;
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instance->init(size, &rect, &visible_rect, engine, depsgraph, camera_original_ob, layer);
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instance->render_frame(engine, layer, viewname);
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};
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auto eevee_store_metadata = [&](RenderResult *render_result) {
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instance->store_metadata(render_result);
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};
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DRW_render_to_image(engine, depsgraph, eevee_render_to_image, eevee_store_metadata);
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delete instance;
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}
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static void eevee_render_update_passes(RenderEngine *engine, Scene *scene, ViewLayer *view_layer)
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{
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Instance::update_passes(engine, scene, view_layer);
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}
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RenderEngineType DRW_engine_viewport_eevee_type = {
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/*next*/ nullptr,
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/*prev*/ nullptr,
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/*idname*/ "BLENDER_EEVEE_NEXT",
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/*name*/ N_("EEVEE"),
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/*flag*/ RE_INTERNAL | RE_USE_PREVIEW | RE_USE_STEREO_VIEWPORT | RE_USE_GPU_CONTEXT,
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/*update*/ nullptr,
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/*render*/ &eevee_render,
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/*render_frame_finish*/ nullptr,
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/*draw*/ nullptr,
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/*bake*/ nullptr,
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/*view_update*/ nullptr,
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/*view_draw*/ nullptr,
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/*update_script_node*/ nullptr,
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/*update_render_passes*/ &eevee_render_update_passes,
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/*update_custom_camera*/ nullptr,
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/*draw_engine*/ nullptr,
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/*rna_ext*/
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{
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/*data*/ nullptr,
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/*srna*/ nullptr,
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/*call*/ nullptr,
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},
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};
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