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Refactored shadowmapping.

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- Made shadow bias size independent, so it will remain when changing light or camera size.
- Implemented normal offset bias, which greatly enhances quality.
- Added transmission to subsurface scattering
- Reimplemented shadow filter modes

Closes #17260
This commit is contained in:
Juan Linietsky
2020-04-07 22:51:52 -03:00
parent b2f79cac9a
commit 4ffc0d6b3f
34 changed files with 1032 additions and 291 deletions
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63
servers/rendering/rasterizer_rd/rasterizer_scene_rd.h
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@@ -79,7 +79,7 @@ protected:
virtual RenderBufferData *_create_render_buffer_data() = 0;
virtual void _render_scene(RID p_render_buffer, const Transform &p_cam_transform, const CameraMatrix &p_cam_projection, bool p_cam_ortogonal, InstanceBase **p_cull_result, int p_cull_count, RID *p_light_cull_result, int p_light_cull_count, RID *p_reflection_probe_cull_result, int p_reflection_probe_cull_count, RID *p_gi_probe_cull_result, int p_gi_probe_cull_count, RID p_environment, RID p_camera_effects, RID p_shadow_atlas, RID p_reflection_atlas, RID p_reflection_probe, int p_reflection_probe_pass, const Color &p_default_color) = 0;
virtual void _render_shadow(RID p_framebuffer, InstanceBase **p_cull_result, int p_cull_count, const CameraMatrix &p_projection, const Transform &p_transform, float p_zfar, float p_bias, float p_normal_bias, bool p_use_dp, bool use_dp_flip) = 0;
virtual void _render_shadow(RID p_framebuffer, InstanceBase **p_cull_result, int p_cull_count, const CameraMatrix &p_projection, const Transform &p_transform, float p_zfar, float p_bias, float p_normal_bias, bool p_use_dp, bool use_dp_flip, bool p_use_pancake) = 0;
virtual void _render_material(const Transform &p_cam_transform, const CameraMatrix &p_cam_projection, bool p_cam_ortogonal, InstanceBase **p_cull_result, int p_cull_count, RID p_framebuffer, const Rect2i &p_region) = 0;
virtual void _debug_giprobe(RID p_gi_probe, RenderingDevice::DrawListID p_draw_list, RID p_framebuffer, const CameraMatrix &p_camera_with_transform, bool p_lighting, bool p_emission, float p_alpha);
@@ -527,6 +527,8 @@ private:
bool _shadow_atlas_find_shadow(ShadowAtlas *shadow_atlas, int *p_in_quadrants, int p_quadrant_count, int p_current_subdiv, uint64_t p_tick, int &r_quadrant, int &r_shadow);
RS::ShadowFilter shadow_filter = RS::SHADOW_FILTER_NONE;
/* DIRECTIONAL SHADOW */
struct DirectionalShadow {
@@ -570,6 +572,7 @@ private:
float farplane;
float split;
float bias_scale;
float shadow_texel_size;
Rect2 atlas_rect;
};
@@ -880,7 +883,7 @@ public:
RID light_instance_create(RID p_light);
void light_instance_set_transform(RID p_light_instance, const Transform &p_transform);
void light_instance_set_shadow_transform(RID p_light_instance, const CameraMatrix &p_projection, const Transform &p_transform, float p_far, float p_split, int p_pass, float p_bias_scale = 1.0);
void light_instance_set_shadow_transform(RID p_light_instance, const CameraMatrix &p_projection, const Transform &p_transform, float p_far, float p_split, int p_pass, float p_shadow_texel_size, float p_bias_scale = 1.0);
void light_instance_mark_visible(RID p_light_instance);
_FORCE_INLINE_ RID light_instance_get_base_light(RID p_light_instance) {
@@ -926,11 +929,44 @@ public:
return li->shadow_transform[p_index].camera;
}
_FORCE_INLINE_ Transform light_instance_get_shadow_transform(RID p_light_instance, int p_index) {
_FORCE_INLINE_ float light_instance_get_shadow_texel_size(RID p_light_instance, RID p_shadow_atlas) {
#ifdef DEBUG_ENABLED
LightInstance *li = light_instance_owner.getornull(p_light_instance);
ERR_FAIL_COND_V(!li->shadow_atlases.has(p_shadow_atlas), 0);
#endif
ShadowAtlas *shadow_atlas = shadow_atlas_owner.getornull(p_shadow_atlas);
ERR_FAIL_COND_V(!shadow_atlas, 0);
#ifdef DEBUG_ENABLED
ERR_FAIL_COND_V(!shadow_atlas->shadow_owners.has(p_light_instance), 0);
#endif
uint32_t key = shadow_atlas->shadow_owners[p_light_instance];
uint32_t quadrant = (key >> ShadowAtlas::QUADRANT_SHIFT) & 0x3;
uint32_t quadrant_size = shadow_atlas->size >> 1;
uint32_t shadow_size = (quadrant_size / shadow_atlas->quadrants[quadrant].subdivision);
return float(1.0) / shadow_size;
}
_FORCE_INLINE_ Transform
light_instance_get_shadow_transform(RID p_light_instance, int p_index) {
LightInstance *li = light_instance_owner.getornull(p_light_instance);
return li->shadow_transform[p_index].transform;
}
_FORCE_INLINE_ float light_instance_get_shadow_bias_scale(RID p_light_instance, int p_index) {
LightInstance *li = light_instance_owner.getornull(p_light_instance);
return li->shadow_transform[p_index].bias_scale;
}
_FORCE_INLINE_ float light_instance_get_shadow_range(RID p_light_instance, int p_index) {
LightInstance *li = light_instance_owner.getornull(p_light_instance);
return li->shadow_transform[p_index].farplane;
}
_FORCE_INLINE_ Rect2 light_instance_get_directional_shadow_atlas_rect(RID p_light_instance, int p_index) {
@@ -944,6 +980,12 @@ public:
return li->shadow_transform[p_index].split;
}
_FORCE_INLINE_ float light_instance_get_directional_shadow_texel_size(RID p_light_instance, int p_index) {
LightInstance *li = light_instance_owner.getornull(p_light_instance);
return li->shadow_transform[p_index].shadow_texel_size;
}
_FORCE_INLINE_ void light_instance_set_render_pass(RID p_light_instance, uint64_t p_pass) {
LightInstance *li = light_instance_owner.getornull(p_light_instance);
li->last_pass = p_pass;
@@ -1107,8 +1149,12 @@ public:
void render_material(const Transform &p_cam_transform, const CameraMatrix &p_cam_projection, bool p_cam_ortogonal, InstanceBase **p_cull_result, int p_cull_count, RID p_framebuffer, const Rect2i &p_region);
virtual void set_scene_pass(uint64_t p_pass) { scene_pass = p_pass; }
_FORCE_INLINE_ uint64_t get_scene_pass() { return scene_pass; }
virtual void set_scene_pass(uint64_t p_pass) {
scene_pass = p_pass;
}
_FORCE_INLINE_ uint64_t get_scene_pass() {
return scene_pass;
}
virtual void screen_space_roughness_limiter_set_active(bool p_enable, float p_curve);
virtual bool screen_space_roughness_limiter_is_active() const;
@@ -1118,6 +1164,9 @@ public:
RS::SubSurfaceScatteringQuality sub_surface_scattering_get_quality() const;
virtual void sub_surface_scattering_set_scale(float p_scale, float p_depth_scale);
virtual void shadow_filter_set(RS::ShadowFilter p_filter);
_FORCE_INLINE_ RS::ShadowFilter shadow_filter_get() const { return shadow_filter; }
int get_roughness_layers() const;
bool is_using_radiance_cubemap_array() const;
@@ -1126,7 +1175,9 @@ public:
virtual void update();
virtual void set_debug_draw_mode(RS::ViewportDebugDraw p_debug_draw);
_FORCE_INLINE_ RS::ViewportDebugDraw get_debug_draw_mode() const { return debug_draw; }
_FORCE_INLINE_ RS::ViewportDebugDraw get_debug_draw_mode() const {
return debug_draw;
}
virtual void set_time(double p_time, double p_step);