mirror/OpenSpace
1
0
Fork 0
mirror of https://github.com/OpenSpace/OpenSpace.git synced 2026-05-03 17:30:04 -05:00
Code Issues Packages Projects Releases Wiki Activity

add model self-shadowing via existing depth map

Browse Source
This commit is contained in:
Joakim Kilby
2023-11-15 14:00:10 +01:00
parent 8ab4b4db23
commit 0e15b4b6d3
9 changed files with 98 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files
modules/base/rendering/renderablemodel.cpp
+36 -13
View File
@@ -826,7 +826,7 @@ void RenderableModel::initializeGL() {
);
// Twice the res
_depthMapResolution = global::renderEngine->renderingResolution() * 2;
_depthMapResolution = global::renderEngine->renderingResolution();
glGenFramebuffers(1, &_depthMapFBO);
@@ -848,13 +848,12 @@ void RenderableModel::initializeGL() {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, glm::value_ptr(glm::vec4(1.f, 1.f, 1.f, 1.f)));
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_R_TO_TEXTURE);
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebuffer(GL_FRAMEBUFFER, _depthMapFBO);
glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, _depthMap, 0);
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
}
@@ -1020,6 +1019,21 @@ void RenderableModel::render(const RenderData& data, RendererTasks&) {
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
}
// does only really need to be set when _castShadow changes
_program->setUniform("has_shadow_depth_map", _castShadow);
if (_castShadow) {
_program->setUniform("model", modelTransform);
_program->setUniform("light_vp", _lightVP);
_program->setUniform("inv_vp", glm::inverse(data.camera.combinedViewMatrix()));
_program->setUniform("shadow_depth_map", 13);
glActiveTexture(GL_TEXTURE13);
glBindTexture(
GL_TEXTURE_2D,
_depthMap
);
}
if (!_shouldRenderTwice) {
// Reset manual depth test
@@ -1286,7 +1300,7 @@ RenderableModel::DepthMapData RenderableModel::renderDepthMap() const {
_depthMapProgram->activate();
const double frustumSize = static_cast<double>(_frustumSize);
const double distance = frustumSize * 10000.;
const double distance = frustumSize * 500.;
// Model
glm::dmat4 transform = glm::translate(glm::dmat4(1), glm::dvec3(_pivot.value()));
@@ -1294,10 +1308,17 @@ RenderableModel::DepthMapData RenderableModel::renderDepthMap() const {
glm::dmat4 model = this->parent()->modelTransform() * transform;
// View
glm::dvec3 center = model * glm::dvec4(_geometry->center(), 1.);
glm::dvec3 center;
if (_modelHasAnimation) {
center = model * glm::dvec4(_geometry->center(), 1.);
}
else {
center = dynamic_cast<SceneGraphNode*>(this->owner())->worldPosition();
}
glm::dvec3 light_dir = glm::normalize(center - light->positionWorldSpace());
glm::dvec3 right = glm::normalize(glm::cross(glm::dvec3(0, 1, 0), -light_dir));
glm::dvec3 eye = center + light_dir * distance;
glm::dvec3 right = glm::normalize(glm::cross(glm::dvec3(0, 1, 0), light_dir));
glm::dvec3 eye = center - light_dir * distance;
glm::dvec3 up = glm::cross(right, light_dir);
glm::dmat4 view = glm::lookAt(eye, center, up);
@@ -1307,27 +1328,29 @@ RenderableModel::DepthMapData RenderableModel::renderDepthMap() const {
frustumSize,
-frustumSize,
frustumSize,
distance * 0.1,
distance * 1.1
distance - frustumSize,
distance + frustumSize
);
glm::dmat4 viewProjection = projection * view;
_lightVP = projection * view;
_depthMapProgram->setUniform("model", model);
_depthMapProgram->setUniform("light_vp", viewProjection);
_depthMapProgram->setUniform("light_vp", _lightVP);
glBindFramebuffer(GL_FRAMEBUFFER, _depthMapFBO);
glViewport(0, 0, _depthMapResolution.x, _depthMapResolution.y);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClear(GL_DEPTH_BUFFER_BIT);
glCullFace(GL_FRONT);
if (isEnabled()) {
_geometry->render(*_depthMapProgram, false, true);
}
glCullFace(GL_BACK);
glUseProgram(prevProg);
glBindFramebuffer(GL_FRAMEBUFFER, prevFbo);
glViewport(prevVp[0], prevVp[1], prevVp[2], prevVp[3]);
return { viewProjection, _depthMap };
return { _lightVP, _depthMap };
}
} // namespace openspace