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Implement shadow meshes

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-When importing, a vertex-only version of the mesh is created.
-This version is used when rendering shadows, and improves performance by reducing bandwidth
-It's automatic, but can optionally be used by users, in case they want to make special versions of geometry for shadow casting.
This commit is contained in:
reduz
2021-01-25 12:20:11 -03:00
parent c5c9517e1e
commit 51d8e32c93
13 changed files with 207 additions and 7 deletions
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14
servers/rendering/renderer_rd/renderer_scene_render_forward.cpp
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@@ -819,7 +819,7 @@ void RendererSceneRenderForward::_render_list_template(RenderingDevice::DrawList
ShaderData *shader;
void *mesh_surface;
if (shadow_pass) {
if (shadow_pass || p_params->pass_mode == PASS_MODE_DEPTH) { //regular depth pass can use these too
material_uniform_set = surf->material_uniform_set_shadow;
shader = surf->shader_shadow;
mesh_surface = surf->surface_shadow;
@@ -2645,10 +2645,17 @@ void RendererSceneRenderForward::_geometry_instance_add_surface_with_material(Ge
}
MaterialData *material_shadow = nullptr;
//void *surface_shadow = nullptr;
void *surface_shadow = nullptr;
if (!p_material->shader_data->writes_modelview_or_projection && !p_material->shader_data->uses_vertex && !p_material->shader_data->uses_discard && !p_material->shader_data->uses_depth_pre_pass) {
flags |= GeometryInstanceSurfaceDataCache::FLAG_USES_SHARED_SHADOW_MATERIAL;
material_shadow = (MaterialData *)storage->material_get_data(default_material, RendererStorageRD::SHADER_TYPE_3D);
RID shadow_mesh = storage->mesh_get_shadow_mesh(p_mesh);
if (shadow_mesh.is_valid()) {
surface_shadow = storage->mesh_get_surface(shadow_mesh, p_surface);
}
} else {
material_shadow = p_material;
}
@@ -2670,7 +2677,8 @@ void RendererSceneRenderForward::_geometry_instance_add_surface_with_material(Ge
//shadow
sdcache->shader_shadow = material_shadow->shader_data;
sdcache->material_uniform_set_shadow = material_shadow->uniform_set;
sdcache->surface_shadow = sdcache->surface; //when adding special shadow meshes, will use this
sdcache->surface_shadow = surface_shadow ? surface_shadow : sdcache->surface;
sdcache->owner = ginstance;