Reduces stutter and freezes when playing.
* Maintains double SM and SM Color textures
* Light frustum update triggers incremental generation of shadow map into secondary 'future' textures.
* Every incremental update renders a portion of the shadow draw list (split equally).
* After defined number of frames (currently, 4), 'future' and 'current' textures are swapped, and DirectionalLight 'commits' the new frustum to use when rendering shadows on screen.
Co-authored-by: sfan5 <sfan5@live.de>
# On true translucent nodes cast colored shadows. This is expensive.
shadow_map_color (Colored shadows) bool false
-
-# Set the shadow update time, in seconds.
-# Lower value means shadows and map updates faster, but it consumes more resources.
-# Minimum value: 0.001; maximum value: 0.2
-shadow_update_time (Map update time) float 0.2 0.001 0.2
+# Spread a complete update of shadow map over given amount of frames.
+# Higher values might make shadows laggy, lower values
+# will consume more resources.
+# Minimum value: 1; maximum value: 16
+shadow_update_frames (Map shadows update frames) int 8 1 16
# Set the soft shadow radius size.
# Lower values mean sharper shadows, bigger values mean softer shadows.
float pointDepth;
float maxRadius = SOFTSHADOWRADIUS * 5.0 * multiplier;
- float bound = clamp(PCFBOUND * (1 - baseLength), 0.5, PCFBOUND);
+ float bound = clamp(PCFBOUND * (1 - baseLength), 0.0, PCFBOUND);
int n = 0;
for (y = -bound; y <= bound; y += 1.0)
float perspectiveFactor;
float texture_size = 1.0 / (f_textureresolution * 0.5);
- int samples = int(clamp(PCFSAMPLES * (1 - baseLength) * (1 - baseLength), 1, PCFSAMPLES));
+ int samples = int(clamp(PCFSAMPLES * (1 - baseLength) * (1 - baseLength), PCFSAMPLES / 4, PCFSAMPLES));
int init_offset = int(floor(mod(((smTexCoord.x * 34.0) + 1.0) * smTexCoord.y, 64.0-samples)));
int end_offset = int(samples) + init_offset;
float perspectiveFactor;
float texture_size = 1.0 / (f_textureresolution * 0.5);
- int samples = int(clamp(PCFSAMPLES * (1 - baseLength) * (1 - baseLength), 1, PCFSAMPLES));
+ int samples = int(clamp(PCFSAMPLES * (1 - baseLength) * (1 - baseLength), PCFSAMPLES / 4, PCFSAMPLES));
int init_offset = int(floor(mod(((smTexCoord.x * 34.0) + 1.0) * smTexCoord.y, 64.0-samples)));
int end_offset = int(samples) + init_offset;
float texture_size = 1.0 / (f_textureresolution * 0.5);
float y, x;
- float bound = clamp(PCFBOUND * (1 - baseLength), 0.5, PCFBOUND);
+ float bound = clamp(PCFBOUND * (1 - baseLength), PCFBOUND / 2, PCFBOUND);
int n = 0;
// basic PCF filter
float texture_size = 1.0 / (f_textureresolution * 0.5);
float y, x;
- float bound = clamp(PCFBOUND * (1 - baseLength), 0.5, PCFBOUND);
+ float bound = clamp(PCFBOUND * (1 - baseLength), PCFBOUND / 2, PCFBOUND);
int n = 0;
// basic PCF filter
}
void ClientMap::renderMapShadows(video::IVideoDriver *driver,
- const video::SMaterial &material, s32 pass)
+ const video::SMaterial &material, s32 pass, int frame, int total_frames)
{
bool is_transparent_pass = pass != scene::ESNRP_SOLID;
std::string prefix;
MeshBufListList drawbufs;
+ int count = 0;
+ int low_bound = is_transparent_pass ? 0 : m_drawlist_shadow.size() / total_frames * frame;
+ int high_bound = is_transparent_pass ? m_drawlist_shadow.size() : m_drawlist_shadow.size() / total_frames * (frame + 1);
+
+ // transparent pass should be rendered in one go
+ if (is_transparent_pass && frame != total_frames - 1) {
+ return;
+ }
+
for (auto &i : m_drawlist_shadow) {
+ // only process specific part of the list & break early
+ ++count;
+ if (count <= low_bound)
+ continue;
+ if (count > high_bound)
+ break;
+
v3s16 block_pos = i.first;
MapBlock *block = i.second;
local_material.MaterialType = material.MaterialType;
local_material.BackfaceCulling = material.BackfaceCulling;
local_material.FrontfaceCulling = material.FrontfaceCulling;
+ local_material.BlendOperation = material.BlendOperation;
local_material.Lighting = false;
driver->setMaterial(local_material);
}
}
+ // restore the driver material state
+ video::SMaterial clean;
+ clean.BlendOperation = video::EBO_ADD;
+ driver->setMaterial(clean); // reset material to defaults
+ driver->draw3DLine(v3f(), v3f(), video::SColor(0));
+
g_profiler->avg(prefix + "draw meshes [ms]", draw.stop(true));
g_profiler->avg(prefix + "vertices drawn [#]", vertex_count);
g_profiler->avg(prefix + "drawcalls [#]", drawcall_count);
void renderMap(video::IVideoDriver* driver, s32 pass);
void renderMapShadows(video::IVideoDriver *driver,
- const video::SMaterial &material, s32 pass);
+ const video::SMaterial &material, s32 pass, int frame, int total_frames);
int getBackgroundBrightness(float max_d, u32 daylight_factor,
int oldvalue, bool *sunlight_seen_result);
float jump_timer;
float damage_flash;
float update_draw_list_timer;
- float update_shadows_timer;
f32 fog_range;
changed much
*/
runData.update_draw_list_timer += dtime;
- runData.update_shadows_timer += dtime;
float update_draw_list_delta = 0.2f;
- bool draw_list_updated = false;
v3f camera_direction = camera->getDirection();
if (runData.update_draw_list_timer >= update_draw_list_delta
runData.update_draw_list_timer = 0;
client->getEnv().getClientMap().updateDrawList();
runData.update_draw_list_last_cam_dir = camera_direction;
- draw_list_updated = true;
}
- if (ShadowRenderer *shadow = RenderingEngine::get_shadow_renderer()) {
- update_draw_list_delta = shadow->getUpdateDelta();
-
- if (m_camera_offset_changed ||
- (runData.update_shadows_timer > update_draw_list_delta &&
- (!draw_list_updated || shadow->getDirectionalLightCount() == 0))) {
- runData.update_shadows_timer = 0;
- updateShadows();
- }
+ if (RenderingEngine::get_shadow_renderer()) {
+ updateShadows();
}
m_game_ui->update(*stats, client, draw_control, cam, runData.pointed_old, gui_chat_console, dtime);
shadow->getDirectionalLight().setDirection(sun_pos);
shadow->setTimeOfDay(in_timeofday);
- shadow->getDirectionalLight().update_frustum(camera, client);
+ shadow->getDirectionalLight().update_frustum(camera, client, m_camera_offset_changed);
}
/****************************************************************************
float tanFovX = tanf(cam->getFovX() * 0.5f);
// adjusted frustum boundaries
- float sfNear = shadow_frustum.zNear;
- float sfFar = adjustDist(shadow_frustum.zFar, cam->getFovY());
+ float sfNear = future_frustum.zNear;
+ float sfFar = adjustDist(future_frustum.zFar, cam->getFovY());
// adjusted camera positions
v3f camPos2 = cam->getPosition();
v3f eye_displacement = direction * vvolume;
// we must compute the viewmat with the position - the camera offset
- // but the shadow_frustum position must be the actual world position
+ // but the future_frustum position must be the actual world position
v3f eye = frustumCenter - eye_displacement;
- shadow_frustum.position = world_center - eye_displacement;
- shadow_frustum.length = vvolume;
- shadow_frustum.ViewMat.buildCameraLookAtMatrixLH(eye, frustumCenter, v3f(0.0f, 1.0f, 0.0f));
- shadow_frustum.ProjOrthMat.buildProjectionMatrixOrthoLH(shadow_frustum.length,
- shadow_frustum.length, -shadow_frustum.length,
- shadow_frustum.length,false);
+ future_frustum.position = world_center - eye_displacement;
+ future_frustum.length = vvolume;
+ future_frustum.ViewMat.buildCameraLookAtMatrixLH(eye, frustumCenter, v3f(0.0f, 1.0f, 0.0f));
+ future_frustum.ProjOrthMat.buildProjectionMatrixOrthoLH(future_frustum.length,
+ future_frustum.length, -future_frustum.length,
+ future_frustum.length,false);
+ future_frustum.camera_offset = cam->getOffset();
}
DirectionalLight::DirectionalLight(const u32 shadowMapResolution,
farPlane(farValue), mapRes(shadowMapResolution), pos(position)
{}
-void DirectionalLight::update_frustum(const Camera *cam, Client *client)
+void DirectionalLight::update_frustum(const Camera *cam, Client *client, bool force)
{
- should_update_map_shadow = true;
+ if (dirty && !force)
+ return;
+
float zNear = cam->getCameraNode()->getNearValue();
float zFar = getMaxFarValue();
///////////////////////////////////
// update splits near and fars
- shadow_frustum.zNear = zNear;
- shadow_frustum.zFar = zFar;
+ future_frustum.zNear = zNear;
+ future_frustum.zFar = zFar;
// update shadow frustum
createSplitMatrices(cam);
// get the draw list for shadows
client->getEnv().getClientMap().updateDrawListShadow(
- getPosition(), getDirection(), shadow_frustum.length);
+ getPosition(), getDirection(), future_frustum.length);
should_update_map_shadow = true;
+ dirty = true;
+
+ // when camera offset changes, adjust the current frustum view matrix to avoid flicker
+ v3s16 cam_offset = cam->getOffset();
+ if (cam_offset != shadow_frustum.camera_offset) {
+ v3f rotated_offset;
+ shadow_frustum.ViewMat.rotateVect(rotated_offset, intToFloat(cam_offset - shadow_frustum.camera_offset, BS));
+ shadow_frustum.ViewMat.setTranslation(shadow_frustum.ViewMat.getTranslation() + rotated_offset);
+ shadow_frustum.camera_offset = cam_offset;
+ }
+}
+
+void DirectionalLight::commitFrustum()
+{
+ if (!dirty)
+ return;
+
+ shadow_frustum = future_frustum;
+ dirty = false;
}
void DirectionalLight::setDirection(v3f dir)
return shadow_frustum.ProjOrthMat;
}
+const m4f &DirectionalLight::getFutureViewMatrix() const
+{
+ return future_frustum.ViewMat;
+}
+
+const m4f &DirectionalLight::getFutureProjectionMatrix() const
+{
+ return future_frustum.ProjOrthMat;
+}
+
m4f DirectionalLight::getViewProjMatrix()
{
return shadow_frustum.ProjOrthMat * shadow_frustum.ViewMat;
core::matrix4 ProjOrthMat;
core::matrix4 ViewMat;
v3f position;
+ v3s16 camera_offset;
};
class DirectionalLight
//DISABLE_CLASS_COPY(DirectionalLight)
- void update_frustum(const Camera *cam, Client *client);
+ void update_frustum(const Camera *cam, Client *client, bool force = false);
// when set direction is updated to negative normalized(direction)
void setDirection(v3f dir);
/// Gets the light's matrices.
const core::matrix4 &getViewMatrix() const;
const core::matrix4 &getProjectionMatrix() const;
+ const core::matrix4 &getFutureViewMatrix() const;
+ const core::matrix4 &getFutureProjectionMatrix() const;
core::matrix4 getViewProjMatrix();
/// Gets the light's far value.
bool should_update_map_shadow{true};
+ void commitFrustum();
+
private:
void createSplitMatrices(const Camera *cam);
v3f pos;
v3f direction{0};
shadowFrustum shadow_frustum;
+ shadowFrustum future_frustum;
+ bool dirty{false};
};
#include "client/shader.h"
#include "client/client.h"
#include "client/clientmap.h"
+#include "profiler.h"
ShadowRenderer::ShadowRenderer(IrrlichtDevice *device, Client *client) :
m_device(device), m_smgr(device->getSceneManager()),
- m_driver(device->getVideoDriver()), m_client(client)
+ m_driver(device->getVideoDriver()), m_client(client), m_current_frame(0)
{
m_shadows_enabled = true;
m_shadow_map_texture_32bit = g_settings->getBool("shadow_map_texture_32bit");
m_shadow_map_colored = g_settings->getBool("shadow_map_color");
m_shadow_samples = g_settings->getS32("shadow_filters");
- m_update_delta = g_settings->getFloat("shadow_update_time");
+ m_map_shadow_update_frames = g_settings->getS16("shadow_update_frames");
}
ShadowRenderer::~ShadowRenderer()
if (shadowMapClientMap)
m_driver->removeTexture(shadowMapClientMap);
+
+ if (shadowMapClientMapFuture)
+ m_driver->removeTexture(shadowMapClientMapFuture);
}
void ShadowRenderer::initialize()
}
-float ShadowRenderer::getUpdateDelta() const
-{
- return m_update_delta;
-}
-
size_t ShadowRenderer::addDirectionalLight()
{
m_light_list.emplace_back(m_shadow_map_texture_size,
m_clear_color = ClearColor;
}
-void ShadowRenderer::update(video::ITexture *outputTarget)
+void ShadowRenderer::updateSMTextures()
{
if (!m_shadows_enabled || m_smgr->getActiveCamera() == nullptr) {
- m_smgr->drawAll();
return;
}
true);
}
+ if (!shadowMapClientMapFuture && m_map_shadow_update_frames > 1) {
+ shadowMapClientMapFuture = getSMTexture(
+ std::string("shadow_clientmap_bb_") + itos(m_shadow_map_texture_size),
+ m_shadow_map_colored ? m_texture_format_color : m_texture_format,
+ true);
+ }
+
if (m_shadow_map_colored && !shadowMapTextureColors) {
shadowMapTextureColors = getSMTexture(
std::string("shadow_colored_") + itos(m_shadow_map_texture_size),
}
if (!m_shadow_node_array.empty() && !m_light_list.empty()) {
- // for every directional light:
+ bool reset_sm_texture = false;
+
+ // detect if SM should be regenerated
+ for (DirectionalLight &light : m_light_list) {
+ if (light.should_update_map_shadow) {
+ light.should_update_map_shadow = false;
+ m_current_frame = 0;
+ reset_sm_texture = true;
+ }
+ }
+
+ video::ITexture* shadowMapTargetTexture = shadowMapClientMapFuture;
+ if (shadowMapTargetTexture == nullptr)
+ shadowMapTargetTexture = shadowMapClientMap;
+
+ // Update SM incrementally:
for (DirectionalLight &light : m_light_list) {
// Static shader values.
m_shadow_depth_cb->MapRes = (f32)m_shadow_map_texture_size;
// Depth texture is available in irrlicth maybe we
// should put some gl* fn here
- if (light.should_update_map_shadow) {
- light.should_update_map_shadow = false;
- m_driver->setRenderTarget(shadowMapClientMap, true, true,
+ if (m_current_frame < m_map_shadow_update_frames) {
+ m_driver->setRenderTarget(shadowMapTargetTexture, reset_sm_texture, true,
video::SColor(255, 255, 255, 255));
- renderShadowMap(shadowMapClientMap, light);
-
- if (m_shadow_map_colored) {
- m_driver->setRenderTarget(shadowMapTextureColors,
- true, false, video::SColor(255, 255, 255, 255));
+ renderShadowMap(shadowMapTargetTexture, light);
+
+ // Render transparent part in one pass.
+ // This is also handled in ClientMap.
+ if (m_current_frame == m_map_shadow_update_frames - 1) {
+ if (m_shadow_map_colored) {
+ m_driver->setRenderTarget(shadowMapTextureColors,
+ true, false, video::SColor(255, 255, 255, 255));
+ }
+ renderShadowMap(shadowMapTextureColors, light,
+ scene::ESNRP_TRANSPARENT);
}
- renderShadowMap(shadowMapTextureColors, light,
- scene::ESNRP_TRANSPARENT);
m_driver->setRenderTarget(0, false, false);
}
+ reset_sm_texture = false;
+ } // end for lights
+
+ // move to the next section
+ if (m_current_frame <= m_map_shadow_update_frames)
+ ++m_current_frame;
+
+ // pass finished, swap textures and commit light changes
+ if (m_current_frame == m_map_shadow_update_frames) {
+ if (shadowMapClientMapFuture != nullptr)
+ std::swap(shadowMapClientMapFuture, shadowMapClientMap);
+
+ // Let all lights know that maps are updated
+ for (DirectionalLight &light : m_light_list)
+ light.commitFrustum();
+ }
+ }
+}
+
+void ShadowRenderer::update(video::ITexture *outputTarget)
+{
+ if (!m_shadows_enabled || m_smgr->getActiveCamera() == nullptr) {
+ m_smgr->drawAll();
+ return;
+ }
+
+ updateSMTextures();
+
+ if (!m_shadow_node_array.empty() && !m_light_list.empty()) {
+
+ for (DirectionalLight &light : m_light_list) {
+ // Static shader values.
+ m_shadow_depth_cb->MapRes = (f32)m_shadow_map_texture_size;
+ m_shadow_depth_cb->MaxFar = (f32)m_shadow_map_max_distance * BS;
+
// render shadows for the n0n-map objects.
m_driver->setRenderTarget(shadowMapTextureDynamicObjects, true,
true, video::SColor(255, 255, 255, 255));
void ShadowRenderer::renderShadowMap(video::ITexture *target,
DirectionalLight &light, scene::E_SCENE_NODE_RENDER_PASS pass)
{
- m_driver->setTransform(video::ETS_VIEW, light.getViewMatrix());
- m_driver->setTransform(video::ETS_PROJECTION, light.getProjectionMatrix());
+ m_driver->setTransform(video::ETS_VIEW, light.getFutureViewMatrix());
+ m_driver->setTransform(video::ETS_PROJECTION, light.getFutureProjectionMatrix());
// Operate on the client map
for (const auto &shadow_node : m_shadow_node_array) {
//material.PolygonOffsetDepthBias = 1.0f/4.0f;
//material.PolygonOffsetSlopeScale = -1.f;
- if (m_shadow_map_colored && pass != scene::ESNRP_SOLID)
+ if (m_shadow_map_colored && pass != scene::ESNRP_SOLID) {
material.MaterialType = (video::E_MATERIAL_TYPE) depth_shader_trans;
- else
+ }
+ else {
material.MaterialType = (video::E_MATERIAL_TYPE) depth_shader;
+ material.BlendOperation = video::EBO_MIN;
+ }
// FIXME: I don't think this is needed here
map_node->OnAnimate(m_device->getTimer()->getTime());
m_driver->setTransform(video::ETS_WORLD,
map_node->getAbsoluteTransformation());
- map_node->renderMapShadows(m_driver, material, pass);
+ map_node->renderMapShadows(m_driver, material, pass, m_current_frame, m_map_shadow_update_frames);
break;
}
}
u32 n_node_materials = shadow_node.node->getMaterialCount();
std::vector<s32> BufferMaterialList;
std::vector<std::pair<bool, bool>> BufferMaterialCullingList;
+ std::vector<video::E_BLEND_OPERATION> BufferBlendOperationList;
BufferMaterialList.reserve(n_node_materials);
BufferMaterialCullingList.reserve(n_node_materials);
+ BufferBlendOperationList.reserve(n_node_materials);
// backup materialtype for each material
// (aka shader)
BufferMaterialList.push_back(current_mat.MaterialType);
current_mat.MaterialType =
- (video::E_MATERIAL_TYPE)depth_shader;
-
- current_mat.setTexture(3, shadowMapTextureFinal);
+ (video::E_MATERIAL_TYPE)depth_shader_entities;
BufferMaterialCullingList.emplace_back(
(bool)current_mat.BackfaceCulling, (bool)current_mat.FrontfaceCulling);
+ BufferBlendOperationList.push_back(current_mat.BlendOperation);
current_mat.BackfaceCulling = true;
current_mat.FrontfaceCulling = false;
current_mat.BackfaceCulling = BufferMaterialCullingList[m].first;
current_mat.FrontfaceCulling = BufferMaterialCullingList[m].second;
+ current_mat.BlendOperation = BufferBlendOperationList[m];
}
} // end for caster shadow nodes
readShaderFile(depth_shader_vs).c_str(), "vertexMain",
video::EVST_VS_1_1,
readShaderFile(depth_shader_fs).c_str(), "pixelMain",
- video::EPST_PS_1_2, m_shadow_depth_cb);
+ video::EPST_PS_1_2, m_shadow_depth_cb, video::EMT_ONETEXTURE_BLEND);
if (depth_shader == -1) {
// upsi, something went wrong loading shader.
m_driver->getMaterialRenderer(depth_shader)->grab();
}
+ // This creates a clone of depth_shader with base material set to EMT_SOLID,
+ // because entities won't render shadows with base material EMP_ONETEXTURE_BLEND
+ if (depth_shader_entities == -1) {
+ std::string depth_shader_vs = getShaderPath("shadow_shaders", "pass1_vertex.glsl");
+ if (depth_shader_vs.empty()) {
+ m_shadows_enabled = false;
+ errorstream << "Error shadow mapping vs shader not found." << std::endl;
+ return;
+ }
+ std::string depth_shader_fs = getShaderPath("shadow_shaders", "pass1_fragment.glsl");
+ if (depth_shader_fs.empty()) {
+ m_shadows_enabled = false;
+ errorstream << "Error shadow mapping fs shader not found." << std::endl;
+ return;
+ }
+
+ depth_shader_entities = gpu->addHighLevelShaderMaterial(
+ readShaderFile(depth_shader_vs).c_str(), "vertexMain",
+ video::EVST_VS_1_1,
+ readShaderFile(depth_shader_fs).c_str(), "pixelMain",
+ video::EPST_PS_1_2, m_shadow_depth_cb);
+
+ if (depth_shader_entities == -1) {
+ // upsi, something went wrong loading shader.
+ m_shadows_enabled = false;
+ errorstream << "Error compiling shadow mapping shader (dynamic)." << std::endl;
+ return;
+ }
+
+ // HACK, TODO: investigate this better
+ // Grab the material renderer once more so minetest doesn't crash
+ // on exit
+ m_driver->getMaterialRenderer(depth_shader_entities)->grab();
+ }
+
if (mixcsm_shader == -1) {
std::string depth_shader_vs = getShaderPath("shadow_shaders", "pass2_vertex.glsl");
if (depth_shader_vs.empty()) {
size_t getDirectionalLightCount() const;
f32 getMaxShadowFar() const;
- float getUpdateDelta() const;
/// Adds a shadow to the scene node.
/// The shadow mode can be ESM_BOTH, or ESM_RECEIVE.
/// ESM_BOTH casts and receives shadows
scene::ESNRP_SOLID);
void renderShadowObjects(video::ITexture *target, DirectionalLight &light);
void mixShadowsQuad();
+ void updateSMTextures();
// a bunch of variables
IrrlichtDevice *m_device{nullptr};
video::IVideoDriver *m_driver{nullptr};
Client *m_client{nullptr};
video::ITexture *shadowMapClientMap{nullptr};
+ video::ITexture *shadowMapClientMapFuture{nullptr};
video::ITexture *shadowMapTextureFinal{nullptr};
video::ITexture *shadowMapTextureDynamicObjects{nullptr};
video::ITexture *shadowMapTextureColors{nullptr};
float m_shadow_map_max_distance;
float m_shadow_map_texture_size;
float m_time_day{0.0f};
- float m_update_delta;
int m_shadow_samples;
bool m_shadow_map_texture_32bit;
bool m_shadows_enabled;
bool m_shadow_map_colored;
+ u8 m_map_shadow_update_frames; /* Use this number of frames to update map shaodw */
+ u8 m_current_frame{0}; /* Current frame */
video::ECOLOR_FORMAT m_texture_format{video::ECOLOR_FORMAT::ECF_R16F};
video::ECOLOR_FORMAT m_texture_format_color{video::ECOLOR_FORMAT::ECF_R16G16};
std::string readShaderFile(const std::string &path);
s32 depth_shader{-1};
+ s32 depth_shader_entities{-1};
s32 depth_shader_trans{-1};
s32 mixcsm_shader{-1};
settings->setDefault("shadow_map_color", "false");
settings->setDefault("shadow_filters", "1");
settings->setDefault("shadow_poisson_filter", "true");
- settings->setDefault("shadow_update_time", "0.2");
+ settings->setDefault("shadow_update_frames", "8");
settings->setDefault("shadow_soft_radius", "1.0");
settings->setDefault("shadow_sky_body_orbit_tilt", "0.0");
projects / dragonfireclient.git / commitdiff