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767ba5932b87bb921cc862c307c6b026a095fbff
kraken/kraken/KRLight.cpp
Kearwood Gilbert 767ba5932b Implement KRNode::RenderInfo 
Use KRNode::RenderInfo to reduce render related argument counts and pass KRSurface through render functions.
Refactor render functions to use KRNode::RenderInfo
2022-04-06 01:00:13 -07:00

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//
// KRLight.cpp
// Kraken Engine
//
// Copyright 2022 Kearwood Gilbert. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation are those of the
// authors and should not be interpreted as representing official policies, either expressed
// or implied, of Kearwood Gilbert.
//
#include "KREngine-common.h"
#include "KRLight.h"
#include "KRNode.h"
#include "KRCamera.h"
#include "KRContext.h"
#include "KRPipelineManager.h"
#include "KRPipeline.h"
#include "KRDirectionalLight.h"
#include "KRSpotLight.h"
#include "KRPointLight.h"
/* static */
void KRLight::InitNodeInfo(KrNodeInfo* nodeInfo)
{
KRNode::InitNodeInfo(nodeInfo);
nodeInfo->light.casts_shadow = true;
nodeInfo->light.color = Vector3::One();
nodeInfo->light.decay_start = 0.0f;
nodeInfo->light.dust_particle_density = 0.1f;
nodeInfo->light.dust_particle_intensity = 1.0f;
nodeInfo->light.dust_particle_size = 1.0f;
nodeInfo->light.flare_occlusion_size = 0.05f;
nodeInfo->light.flare_size = 0.0f;
nodeInfo->light.flare_texture = -1;
nodeInfo->light.intensity = 1.0f;
nodeInfo->light.light_shafts = true;
}
KRLight::KRLight(KRScene &scene, std::string name) : KRNode(scene, name)
{
m_intensity = 1.0f;
m_dust_particle_intensity = 1.0f;
m_color = Vector3::One();
m_flareTexture = "";
m_pFlareTexture = NULL;
m_flareSize = 0.0f;
m_flareOcclusionSize = 0.05f;
m_casts_shadow = true;
m_light_shafts = true;
m_dust_particle_density = 0.1f;
m_dust_particle_size = 1.0f;
m_dust_particle_intensity = 1.0f;
m_occlusionQuery = 0;
m_decayStart = 0;
// Initialize shadow buffers
m_cShadowBuffers = 0;
for(int iBuffer=0; iBuffer < KRENGINE_MAX_SHADOW_BUFFERS; iBuffer++) {
shadowFramebuffer[iBuffer] = 0;
shadowDepthTexture[iBuffer] = 0;
shadowValid[iBuffer] = false;
}
}
KRLight::~KRLight()
{
if(m_occlusionQuery) {
GLDEBUG(glDeleteQueriesEXT(1, &m_occlusionQuery));
m_occlusionQuery = 0;
}
allocateShadowBuffers(0);
}
tinyxml2::XMLElement *KRLight::saveXML( tinyxml2::XMLNode *parent)
{
tinyxml2::XMLElement *e = KRNode::saveXML(parent);
e->SetAttribute("intensity", m_intensity);
e->SetAttribute("color_r", m_color.x);
e->SetAttribute("color_g", m_color.y);
e->SetAttribute("color_b", m_color.z);
e->SetAttribute("decay_start", m_decayStart);
e->SetAttribute("flare_size", m_flareSize);
e->SetAttribute("flare_occlusion_size", m_flareOcclusionSize);
e->SetAttribute("flare_texture", m_flareTexture.c_str());
e->SetAttribute("casts_shadow", m_casts_shadow ? "true" : "false");
e->SetAttribute("light_shafts", m_light_shafts ? "true" : "false");
e->SetAttribute("dust_particle_density", m_dust_particle_density);
e->SetAttribute("dust_particle_size", m_dust_particle_size);
e->SetAttribute("dust_particle_intensity", m_dust_particle_intensity);
return e;
}
void KRLight::loadXML(tinyxml2::XMLElement *e) {
KRNode::loadXML(e);
float x=1.0f,y=1.0f,z=1.0f;
if(e->QueryFloatAttribute("color_r", &x) != tinyxml2::XML_SUCCESS) {
x = 1.0;
}
if(e->QueryFloatAttribute("color_g", &y) != tinyxml2::XML_SUCCESS) {
y = 1.0;
}
if(e->QueryFloatAttribute("color_b", &z) != tinyxml2::XML_SUCCESS) {
z = 1.0;
}
m_color = Vector3::Create(x,y,z);
if(e->QueryFloatAttribute("intensity", &m_intensity) != tinyxml2::XML_SUCCESS) {
m_intensity = 100.0;
}
if(e->QueryFloatAttribute("decay_start", &m_decayStart) != tinyxml2::XML_SUCCESS) {
m_decayStart = 0.0;
}
if(e->QueryFloatAttribute("flare_size", &m_flareSize) != tinyxml2::XML_SUCCESS) {
m_flareSize = 0.0;
}
if(e->QueryFloatAttribute("flare_occlusion_size", &m_flareOcclusionSize) != tinyxml2::XML_SUCCESS) {
m_flareOcclusionSize = 0.05f;
}
if(e->QueryBoolAttribute("casts_shadow", &m_casts_shadow) != tinyxml2::XML_SUCCESS) {
m_casts_shadow = true;
}
if(e->QueryBoolAttribute("light_shafts", &m_light_shafts) != tinyxml2::XML_SUCCESS) {
m_light_shafts = true;
}
m_dust_particle_density = 0.1f;
if(e->QueryFloatAttribute("dust_particle_density", &m_dust_particle_density) != tinyxml2::XML_SUCCESS) {
m_dust_particle_density = 0.1f;
}
m_dust_particle_size = 1.0f;
if(e->QueryFloatAttribute("dust_particle_size", &m_dust_particle_size) != tinyxml2::XML_SUCCESS) {
m_dust_particle_size = 1.0f;
}
m_dust_particle_intensity = 1.0f;
if(e->QueryFloatAttribute("dust_particle_intensity", &m_dust_particle_intensity) != tinyxml2::XML_SUCCESS) {
m_dust_particle_intensity = 1.0f;
}
const char *szFlareTexture = e->Attribute("flare_texture");
if(szFlareTexture) {
m_flareTexture = szFlareTexture;
} else {
m_flareTexture = "";
}
m_pFlareTexture = NULL;
}
void KRLight::setFlareTexture(std::string flare_texture) {
m_flareTexture = flare_texture;
m_pFlareTexture = NULL;
}
void KRLight::setFlareSize(float flare_size) {
m_flareSize = flare_size;
}
void KRLight::setFlareOcclusionSize(float occlusion_size) {
m_flareOcclusionSize = occlusion_size;
}
void KRLight::setIntensity(float intensity) {
m_intensity = intensity;
}
float KRLight::getIntensity() {
return m_intensity;
}
const Vector3 &KRLight::getColor() {
return m_color;
}
void KRLight::setColor(const Vector3 &color) {
m_color = color;
}
void KRLight::setDecayStart(float decayStart) {
m_decayStart = decayStart;
}
float KRLight::getDecayStart() {
return m_decayStart;
}
void KRLight::render(RenderInfo& ri) {
if(m_lod_visible <= LOD_VISIBILITY_PRESTREAM) return;
KRNode::render(ri);
if(ri.renderPass == KRNode::RENDER_PASS_GENERATE_SHADOWMAPS && (ri.camera->settings.volumetric_environment_enable || ri.camera->settings.dust_particle_enable || (ri.camera->settings.m_cShadowBuffers > 0 && m_casts_shadow))) {
allocateShadowBuffers(configureShadowBufferViewports(ri.viewport));
renderShadowBuffers(ri);
}
if(ri.renderPass == KRNode::RENDER_PASS_ADDITIVE_PARTICLES && ri.camera->settings.dust_particle_enable) {
// Render brownian particles for dust floating in air
if(m_cShadowBuffers >= 1 && shadowValid[0] && m_dust_particle_density > 0.0f && m_dust_particle_size > 0.0f && m_dust_particle_intensity > 0.0f) {
if(ri.viewport.visible(getBounds()) || true) { // FINDME, HACK need to remove "|| true"?
float particle_range = 600.0f;
int particle_count = (int)(m_dust_particle_density * pow(particle_range, 3));
if(particle_count > KRMeshManager::KRENGINE_MAX_RANDOM_PARTICLES) particle_count = KRMeshManager::KRENGINE_MAX_RANDOM_PARTICLES;
// Enable z-buffer test
GLDEBUG(glEnable(GL_DEPTH_TEST));
GLDEBUG(glDepthRangef(0.0, 1.0));
Matrix4 particleModelMatrix;
particleModelMatrix.scale(particle_range); // Scale the box symetrically to ensure that we don't have an uneven distribution of particles for different angles of the view frustrum
particleModelMatrix.translate(ri.viewport.getCameraPosition());
std::vector<KRDirectionalLight *> this_directional_light;
std::vector<KRSpotLight *> this_spot_light;
std::vector<KRPointLight *> this_point_light;
KRDirectionalLight *directional_light = dynamic_cast<KRDirectionalLight *>(this);
KRSpotLight *spot_light = dynamic_cast<KRSpotLight *>(this);
KRPointLight *point_light = dynamic_cast<KRPointLight *>(this);
if(directional_light) {
this_directional_light.push_back(directional_light);
}
if(spot_light) {
this_spot_light.push_back(spot_light);
}
if(point_light) {
this_point_light.push_back(point_light);
}
KRPipelineManager::PipelineInfo info{};
std::string shader_name("dust_particle");
info.shader_name = &shader_name;
info.pCamera = ri.camera;
info.point_lights = &this_point_light;
info.directional_lights = &this_directional_light;
info.spot_lights = &this_spot_light;
info.renderPass = ri.renderPass;
KRPipeline *pParticleShader = m_pContext->getPipelineManager()->getPipeline(*ri.surface, info);
if(getContext().getPipelineManager()->selectPipeline(*ri.surface, *ri.camera, pParticleShader, ri.viewport, particleModelMatrix, &this_point_light, &this_directional_light, &this_spot_light, 0, ri.renderPass, Vector3::Zero(), 0.0f, Vector4::Zero())) {
pParticleShader->setUniform(KRPipeline::KRENGINE_UNIFORM_LIGHT_COLOR, m_color * ri.camera->settings.dust_particle_intensity * m_dust_particle_intensity * m_intensity);
pParticleShader->setUniform(KRPipeline::KRENGINE_UNIFORM_PARTICLE_ORIGIN, Matrix4::DotWDiv(Matrix4::Invert(particleModelMatrix), Vector3::Zero()));
pParticleShader->setUniform(KRPipeline::KRENGINE_UNIFORM_FLARE_SIZE, m_dust_particle_size);
KRDataBlock particle_index_data;
m_pContext->getMeshManager()->bindVBO(ri.commandBuffer, m_pContext->getMeshManager()->getRandomParticles(), particle_index_data, (1 << KRMesh::KRENGINE_ATTRIB_VERTEX) | (1 << KRMesh::KRENGINE_ATTRIB_TEXUVA), true, 1.0f
#if KRENGINE_DEBUG_GPU_LABELS
, "Light Particles"
#endif
);
GLDEBUG(glDrawArrays(GL_TRIANGLES, 0, particle_count*3));
}
}
}
}
if(ri.renderPass == KRNode::RENDER_PASS_VOLUMETRIC_EFFECTS_ADDITIVE && ri.camera->settings.volumetric_environment_enable && m_light_shafts) {
std::string shader_name = ri.camera->settings.volumetric_environment_downsample != 0 ? "volumetric_fog_downsampled" : "volumetric_fog";
std::vector<KRDirectionalLight *> this_directional_light;
std::vector<KRSpotLight *> this_spot_light;
std::vector<KRPointLight *> this_point_light;
KRDirectionalLight *directional_light = dynamic_cast<KRDirectionalLight *>(this);
KRSpotLight *spot_light = dynamic_cast<KRSpotLight *>(this);
KRPointLight *point_light = dynamic_cast<KRPointLight *>(this);
if(directional_light) {
this_directional_light.push_back(directional_light);
}
if(spot_light) {
this_spot_light.push_back(spot_light);
}
if(point_light) {
this_point_light.push_back(point_light);
}
KRPipelineManager::PipelineInfo info{};
info.shader_name = &shader_name;
info.pCamera = ri.camera;
info.point_lights = &this_point_light;
info.directional_lights = &this_directional_light;
info.spot_lights = &this_spot_light;
info.renderPass = KRNode::RENDER_PASS_ADDITIVE_PARTICLES;
KRPipeline *pFogShader = m_pContext->getPipelineManager()->getPipeline(*ri.surface, info);
if(getContext().getPipelineManager()->selectPipeline(*ri.surface, *ri.camera, pFogShader, ri.viewport, Matrix4(), &this_point_light, &this_directional_light, &this_spot_light, 0, KRNode::RENDER_PASS_VOLUMETRIC_EFFECTS_ADDITIVE, Vector3::Zero(), 0.0f, Vector4::Zero())) {
int slice_count = (int)(ri.camera->settings.volumetric_environment_quality * 495.0) + 5;
float slice_near = -ri.camera->settings.getPerspectiveNearZ();
float slice_far = -ri.camera->settings.volumetric_environment_max_distance;
float slice_spacing = (slice_far - slice_near) / slice_count;
pFogShader->setUniform(KRPipeline::KRENGINE_UNIFORM_SLICE_DEPTH_SCALE, Vector2::Create(slice_near, slice_spacing));
pFogShader->setUniform(KRPipeline::KRENGINE_UNIFORM_LIGHT_COLOR, (m_color * ri.camera->settings.volumetric_environment_intensity * m_intensity * -slice_spacing / 1000.0f));
KRDataBlock index_data;
m_pContext->getMeshManager()->bindVBO(ri.commandBuffer, m_pContext->getMeshManager()->getVolumetricLightingVertexes(), index_data, (1 << KRMesh::KRENGINE_ATTRIB_VERTEX), true, 1.0f
#if KRENGINE_DEBUG_GPU_LABELS
, "Participating Media"
#endif
);
GLDEBUG(glDrawArrays(GL_TRIANGLES, 0, slice_count*6));
}
}
if(ri.renderPass == KRNode::RENDER_PASS_PARTICLE_OCCLUSION) {
if(m_flareTexture.size() && m_flareSize > 0.0f) {
Matrix4 occlusion_test_sphere_matrix = Matrix4();
occlusion_test_sphere_matrix.scale(m_localScale * m_flareOcclusionSize);
occlusion_test_sphere_matrix.translate(m_localTranslation);
if(m_parentNode) {
occlusion_test_sphere_matrix *= m_parentNode->getModelMatrix();
}
KRPipelineManager::PipelineInfo info{};
std::string shader_name("occlusion_test");
info.shader_name = &shader_name;
info.pCamera = ri.camera;
info.point_lights = &ri.point_lights;
info.directional_lights = &ri.directional_lights;
info.spot_lights = &ri.spot_lights;
info.renderPass = ri.renderPass;
if(getContext().getPipelineManager()->selectPipeline(*ri.surface, info, ri.viewport, occlusion_test_sphere_matrix, Vector3::Zero(), 0.0f, Vector4::Zero())) {
GLDEBUG(glGenQueriesEXT(1, &m_occlusionQuery));
#if TARGET_OS_IPHONE || defined(ANDROID)
GLDEBUG(glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, m_occlusionQuery));
#else
GLDEBUG(glBeginQuery(GL_SAMPLES_PASSED, m_occlusionQuery));
#endif
std::vector<KRMesh *> sphereModels = getContext().getMeshManager()->getModel("__sphere");
if(sphereModels.size()) {
for(int i=0; i < sphereModels[0]->getSubmeshCount(); i++) {
sphereModels[0]->renderSubmesh(ri.commandBuffer, i, ri.renderPass, getName(), "occlusion_test", 1.0f);
}
}
#if TARGET_OS_IPHONE || defined(ANDROID)
GLDEBUG(glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT));
#else
GLDEBUG(glEndQuery(GL_SAMPLES_PASSED));
#endif
}
}
}
if(ri.renderPass == KRNode::RENDER_PASS_ADDITIVE_PARTICLES) {
if(m_flareTexture.size() && m_flareSize > 0.0f) {
if(m_occlusionQuery) {
GLuint params = 0;
GLDEBUG(glGetQueryObjectuivEXT(m_occlusionQuery, GL_QUERY_RESULT_EXT, &params));
GLDEBUG(glDeleteQueriesEXT(1, &m_occlusionQuery));
if(params) {
if(!m_pFlareTexture && m_flareTexture.size()) {
m_pFlareTexture = getContext().getTextureManager()->getTexture(m_flareTexture);
}
if(m_pFlareTexture) {
// Disable z-buffer test
GLDEBUG(glDisable(GL_DEPTH_TEST));
GLDEBUG(glDepthRangef(0.0, 1.0));
// Render light flare on transparency pass
KRPipelineManager::PipelineInfo info{};
std::string shader_name("flare");
info.shader_name = &shader_name;
info.pCamera = ri.camera;
info.point_lights = &ri.point_lights;
info.directional_lights = &ri.directional_lights;
info.spot_lights = &ri.spot_lights;
info.renderPass = ri.renderPass;
KRPipeline *pShader = getContext().getPipelineManager()->getPipeline(*ri.surface, info);
if(getContext().getPipelineManager()->selectPipeline(*ri.surface, *ri.camera, pShader, ri.viewport, getModelMatrix(), &ri.point_lights, &ri.directional_lights, &ri.spot_lights, 0, ri.renderPass, Vector3::Zero(), 0.0f, Vector4::Zero())) {
pShader->setUniform(KRPipeline::KRENGINE_UNIFORM_MATERIAL_ALPHA, 1.0f);
pShader->setUniform(KRPipeline::KRENGINE_UNIFORM_FLARE_SIZE, m_flareSize);
m_pContext->getTextureManager()->selectTexture(0, m_pFlareTexture, 0.0f, KRTexture::TEXTURE_USAGE_LIGHT_FLARE);
m_pContext->getMeshManager()->bindVBO(ri.commandBuffer, &getContext().getMeshManager()->KRENGINE_VBO_DATA_2D_SQUARE_VERTICES, 1.0f);
GLDEBUG(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
}
}
}
}
}
}
}
void KRLight::allocateShadowBuffers(int cBuffers) {
// First deallocate buffers no longer needed
for(int iShadow = cBuffers; iShadow < KRENGINE_MAX_SHADOW_BUFFERS; iShadow++) {
if (shadowDepthTexture[iShadow]) {
GLDEBUG(glDeleteTextures(1, shadowDepthTexture + iShadow));
shadowDepthTexture[iShadow] = 0;
}
if (shadowFramebuffer[iShadow]) {
GLDEBUG(glDeleteFramebuffers(1, shadowFramebuffer + iShadow));
shadowFramebuffer[iShadow] = 0;
}
}
// Allocate newly required buffers
for(int iShadow = 0; iShadow < cBuffers; iShadow++) {
Vector2 viewportSize = m_shadowViewports[iShadow].getSize();
if(!shadowDepthTexture[iShadow]) {
shadowValid[iShadow] = false;
GLDEBUG(glGenFramebuffers(1, shadowFramebuffer + iShadow));
GLDEBUG(glGenTextures(1, shadowDepthTexture + iShadow));
// ===== Create offscreen shadow framebuffer object =====
GLDEBUG(glBindFramebuffer(GL_FRAMEBUFFER, shadowFramebuffer[iShadow]));
// ----- Create Depth Texture for shadowFramebuffer -----
GLDEBUG( glBindTexture(GL_TEXTURE_2D, shadowDepthTexture[iShadow]));
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
m_pContext->getTextureManager()->_setWrapModeS(shadowDepthTexture[iShadow], GL_CLAMP_TO_EDGE);
m_pContext->getTextureManager()->_setWrapModeT(shadowDepthTexture[iShadow], GL_CLAMP_TO_EDGE);
#if GL_EXT_shadow_samplers
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE_EXT, GL_COMPARE_REF_TO_TEXTURE_EXT)); // TODO - Detect GL_EXT_shadow_samplers and only activate if available
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC_EXT, GL_LEQUAL)); // TODO - Detect GL_EXT_shadow_samplers and only activate if available
#endif
GLDEBUG(glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, (GLsizei)viewportSize.x, (GLsizei)viewportSize.y, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL));
GLDEBUG(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, shadowDepthTexture[iShadow], 0));
}
}
m_cShadowBuffers = cBuffers;
}
void KRLight::deleteBuffers()
{
// Called when this light wasn't used in the last frame, so we can free the resources for use by other lights
allocateShadowBuffers(0);
}
void KRLight::invalidateShadowBuffers()
{
for(int iShadow=0; iShadow < m_cShadowBuffers; iShadow++) {
shadowValid[iShadow] = false;
}
}
int KRLight::configureShadowBufferViewports(const KRViewport &viewport)
{
return 0;
}
void KRLight::renderShadowBuffers(RenderInfo& ri)
{
for(int iShadow=0; iShadow < m_cShadowBuffers; iShadow++) {
if(!shadowValid[iShadow]) {
shadowValid[iShadow] = true;
GLDEBUG(glBindFramebuffer(GL_FRAMEBUFFER, shadowFramebuffer[iShadow]));
GLDEBUG(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, shadowDepthTexture[iShadow], 0));
GLDEBUG(glViewport(0, 0, (GLsizei)m_shadowViewports[iShadow].getSize().x, (GLsizei)m_shadowViewports[iShadow].getSize().y));
GLDEBUG(glClearDepthf(0.0f));
GLDEBUG(glClear(GL_DEPTH_BUFFER_BIT));
GLDEBUG(glViewport(1, 1, (GLsizei)m_shadowViewports[iShadow].getSize().x - 2, (GLsizei)m_shadowViewports[iShadow].getSize().y - 2));
GLDEBUG(glClearDepthf(1.0f));
GLDEBUG(glClear(GL_DEPTH_BUFFER_BIT));
GLDEBUG(glDisable(GL_DITHER));
//GLDEBUG(glCullFace(GL_BACK)); // Enable frontface culling, which eliminates some self-cast shadow artifacts
//GLDEBUG(glEnable(GL_CULL_FACE));
GLDEBUG(glDisable(GL_CULL_FACE));
// Enable z-buffer test
GLDEBUG(glEnable(GL_DEPTH_TEST));
GLDEBUG(glDepthFunc(GL_LESS));
GLDEBUG(glDepthRangef(0.0, 1.0));
// Disable alpha blending as we are using alpha channel for packed depth info
GLDEBUG(glDisable(GL_BLEND));
// Use shader program
KRPipelineManager::PipelineInfo info{};
std::string shader_name("ShadowShader");
info.shader_name = &shader_name;
info.pCamera = ri.camera;
info.renderPass = KRNode::RENDER_PASS_FORWARD_TRANSPARENT;
KRPipeline *shadowShader = m_pContext->getPipelineManager()->getPipeline(*ri.surface, info);
getContext().getPipelineManager()->selectPipeline(*ri.surface, *ri.camera, shadowShader, m_shadowViewports[iShadow], Matrix4(), nullptr, nullptr, nullptr, 0, KRNode::RENDER_PASS_SHADOWMAP, Vector3::Zero(), 0.0f, Vector4::Zero());
getScene().render(ri.commandBuffer, *ri.surface, ri.camera, m_shadowViewports[iShadow].getVisibleBounds(), m_shadowViewports[iShadow], KRNode::RENDER_PASS_SHADOWMAP, true);
GLDEBUG(glEnable(GL_CULL_FACE));
}
}
}
int KRLight::getShadowBufferCount()
{
int cBuffers=0;
for(int iBuffer=0; iBuffer < m_cShadowBuffers; iBuffer++) {
if(shadowValid[iBuffer]) {
cBuffers++;
} else {
break;
}
}
return cBuffers;
}
GLuint *KRLight::getShadowTextures()
{
return shadowDepthTexture;
}
KRViewport *KRLight::getShadowViewports()
{
return m_shadowViewports;
}
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