mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-04-22 11:18:22 -05:00
Added shadow and ring components to Globebrowsing and shaders for shadows.
This commit is contained in:
Jonathas Costa
@@ -0,0 +1,445 @@
|
||||
/*****************************************************************************************
|
||||
* *
|
||||
* OpenSpace *
|
||||
* *
|
||||
* Copyright (c) 2014-2018 *
|
||||
* *
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
|
||||
* software and associated documentation files (the "Software"), to deal in the Software *
|
||||
* without restriction, including without limitation the rights to use, copy, modify, *
|
||||
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
|
||||
* permit persons to whom the Software is furnished to do so, subject to the following *
|
||||
* conditions: *
|
||||
* *
|
||||
* The above copyright notice and this permission notice shall be included in all copies *
|
||||
* or substantial portions of the Software. *
|
||||
* *
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
|
||||
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
|
||||
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
|
||||
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
|
||||
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
|
||||
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
|
||||
****************************************************************************************/
|
||||
|
||||
#include <modules/globebrowsing/src/ringscomponent.h>
|
||||
#include <modules/globebrowsing/globebrowsingmodule.h>
|
||||
#include <modules/globebrowsing/src/renderableglobe.h>
|
||||
|
||||
#include <openspace/documentation/documentation.h>
|
||||
#include <openspace/documentation/verifier.h>
|
||||
#include <openspace/util/updatestructures.h>
|
||||
|
||||
#include <openspace/engine/globals.h>
|
||||
#include <openspace/engine/openspaceengine.h>
|
||||
#include <openspace/engine/moduleengine.h>
|
||||
|
||||
#include <openspace/rendering/renderengine.h>
|
||||
#include <openspace/scene/scene.h>
|
||||
|
||||
#include <ghoul/filesystem/cachemanager.h>
|
||||
#include <ghoul/filesystem/filesystem.h>
|
||||
#include <ghoul/logging/logmanager.h>
|
||||
|
||||
#include <ghoul/filesystem/filesystem.h>
|
||||
#include <ghoul/misc/dictionary.h>
|
||||
#include <ghoul/opengl/programobject.h>
|
||||
#include <ghoul/io/texture/texturereader.h>
|
||||
#include <ghoul/opengl/texture.h>
|
||||
#include <ghoul/opengl/textureunit.h>
|
||||
|
||||
#include <ghoul/font/fontmanager.h>
|
||||
#include <ghoul/font/fontrenderer.h>
|
||||
|
||||
#include <fstream>
|
||||
#include <cstdlib>
|
||||
#include <locale>
|
||||
|
||||
namespace {
|
||||
constexpr const std::array<const char*, 7> UniformNames = {
|
||||
"modelViewMatrix", "projectionMatrix", "textureOffset",
|
||||
"transparency", "_nightFactor", "sunPosition", "texture1"
|
||||
};
|
||||
|
||||
constexpr const std::array<const char*, 3> GeomUniformNames = {
|
||||
"modelViewMatrix", "projectionMatrix", "textureOffset"
|
||||
};
|
||||
|
||||
constexpr openspace::properties::Property::PropertyInfo TextureInfo = {
|
||||
"Texture",
|
||||
"Texture",
|
||||
"This value is the path to a texture on disk that contains a one-dimensional "
|
||||
"texture which is used for these rings."
|
||||
};
|
||||
|
||||
constexpr openspace::properties::Property::PropertyInfo SizeInfo = {
|
||||
"Size",
|
||||
"Size",
|
||||
"This value specifies the radius of the rings in meter."
|
||||
};
|
||||
|
||||
constexpr openspace::properties::Property::PropertyInfo OffsetInfo = {
|
||||
"Offset",
|
||||
"Offset",
|
||||
"This value is used to limit the width of the rings.Each of the two values is a "
|
||||
"value between 0 and 1, where 0 is the center of the ring and 1 is the maximum "
|
||||
"extent at the radius. If this value is, for example {0.5, 1.0}, the ring is "
|
||||
"only shown between radius/2 and radius. It defaults to {0.0, 1.0}."
|
||||
};
|
||||
|
||||
constexpr openspace::properties::Property::PropertyInfo NightFactorInfo = {
|
||||
"NightFactor",
|
||||
"Night Factor",
|
||||
"This value is a multiplicative factor that is applied to the side of the rings "
|
||||
"that is facing away from the Sun. If this value is equal to '1', no darkening "
|
||||
"of the night side occurs."
|
||||
};
|
||||
|
||||
constexpr openspace::properties::Property::PropertyInfo TransparencyInfo = {
|
||||
"Transparency",
|
||||
"Transparency",
|
||||
"This value determines the transparency of part of the rings depending on the "
|
||||
"color values. For this value v, the transparency is equal to length(color) / v."
|
||||
};
|
||||
} // namespace
|
||||
|
||||
namespace openspace {
|
||||
|
||||
documentation::Documentation RingsComponent::Documentation() {
|
||||
using namespace documentation;
|
||||
return {
|
||||
"Rings Component",
|
||||
"globebrowsing_rings_component",
|
||||
{
|
||||
{
|
||||
TextureInfo.identifier,
|
||||
new StringVerifier,
|
||||
Optional::Yes,
|
||||
TextureInfo.description
|
||||
},
|
||||
{
|
||||
SizeInfo.identifier,
|
||||
new DoubleVerifier,
|
||||
Optional::Yes,
|
||||
SizeInfo.description
|
||||
},
|
||||
{
|
||||
OffsetInfo.identifier,
|
||||
new DoubleVector2Verifier,
|
||||
Optional::Yes,
|
||||
OffsetInfo.description
|
||||
},
|
||||
{
|
||||
NightFactorInfo.identifier,
|
||||
new DoubleVerifier,
|
||||
Optional::Yes,
|
||||
NightFactorInfo.description
|
||||
},
|
||||
{
|
||||
TransparencyInfo.identifier,
|
||||
new DoubleVerifier,
|
||||
Optional::Yes,
|
||||
TransparencyInfo.description
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
RingsComponent::RingsComponent(const ghoul::Dictionary& dictionary)
|
||||
: properties::PropertyOwner({ "Rings" })
|
||||
, _texturePath(TextureInfo)
|
||||
, _size(SizeInfo, 1.f, 0.f, 1e25f)
|
||||
, _offset(OffsetInfo, glm::vec2(0.f, 1.f), glm::vec2(0.f), glm::vec2(1.f))
|
||||
, _nightFactor(NightFactorInfo, 0.33f, 0.f, 1.f)
|
||||
, _transparency(TransparencyInfo, 0.15f, 0.f, 1.f)
|
||||
, _enabled({ "Enabled", "Enabled", "Enable/Disable Rings" }, true)
|
||||
, _ringsDictionary(dictionary)
|
||||
{
|
||||
using ghoul::filesystem::File;
|
||||
|
||||
if (dictionary.hasKey("Rings")) {
|
||||
dictionary.getValue("Rings", _ringsDictionary);
|
||||
}
|
||||
|
||||
documentation::testSpecificationAndThrow(
|
||||
Documentation(),
|
||||
_ringsDictionary,
|
||||
"RingsComponent"
|
||||
);
|
||||
}
|
||||
|
||||
void RingsComponent::initialize()
|
||||
{
|
||||
using ghoul::filesystem::File;
|
||||
|
||||
addProperty(_enabled);
|
||||
|
||||
_size = static_cast<float>(_ringsDictionary.value<double>(SizeInfo.identifier));
|
||||
//setBoundingSphere(_size);
|
||||
_size.onChange([&]() { _planeIsDirty = true; });
|
||||
addProperty(_size);
|
||||
|
||||
_texturePath = absPath(_ringsDictionary.value<std::string>(TextureInfo.identifier));
|
||||
_textureFile = std::make_unique<File>(_texturePath);
|
||||
|
||||
if (_ringsDictionary.hasKeyAndValue<glm::vec2>(OffsetInfo.identifier)) {
|
||||
_offset = _ringsDictionary.value<glm::vec2>(OffsetInfo.identifier);
|
||||
}
|
||||
addProperty(_offset);
|
||||
|
||||
_texturePath.onChange([&]() { loadTexture(); });
|
||||
addProperty(_texturePath);
|
||||
|
||||
_textureFile->setCallback([&](const File&) { _textureIsDirty = true; });
|
||||
|
||||
if (_ringsDictionary.hasKeyAndValue<double>(NightFactorInfo.identifier)) {
|
||||
_nightFactor = static_cast<float>(
|
||||
_ringsDictionary.value<double>(NightFactorInfo.identifier)
|
||||
);
|
||||
}
|
||||
addProperty(_nightFactor);
|
||||
|
||||
if (_ringsDictionary.hasKeyAndValue<double>(TransparencyInfo.identifier)) {
|
||||
_transparency = static_cast<float>(
|
||||
_ringsDictionary.value<double>(TransparencyInfo.identifier)
|
||||
);
|
||||
}
|
||||
addProperty(_transparency);
|
||||
}
|
||||
|
||||
bool RingsComponent::isReady() const {
|
||||
return (_shader || _geometryOnlyShader) && _texture;
|
||||
}
|
||||
|
||||
void RingsComponent::initializeGL() {
|
||||
_shader = global::renderEngine.buildRenderProgram(
|
||||
"RingsProgram",
|
||||
absPath("${MODULE_GLOBEBROWSING}/shaders/rings_vs.glsl"),
|
||||
absPath("${MODULE_GLOBEBROWSING}/shaders/rings_fs.glsl")
|
||||
);
|
||||
|
||||
_geometryOnlyShader = global::renderEngine.buildRenderProgram(
|
||||
"RingsGeomOnlyProgram",
|
||||
absPath("${MODULE_GLOBEBROWSING}/shaders/rings_geom_vs.glsl"),
|
||||
absPath("${MODULE_GLOBEBROWSING}/shaders/rings_geom_fs.glsl")
|
||||
);
|
||||
|
||||
ghoul::opengl::updateUniformLocations(*_shader, _uniformCache, UniformNames);
|
||||
ghoul::opengl::updateUniformLocations(
|
||||
*_geometryOnlyShader,
|
||||
_geomUniformCache,
|
||||
GeomUniformNames
|
||||
);
|
||||
|
||||
glGenVertexArrays(1, &_quad);
|
||||
glGenBuffers(1, &_vertexPositionBuffer);
|
||||
|
||||
createPlane();
|
||||
loadTexture();
|
||||
}
|
||||
|
||||
void RingsComponent::deinitializeGL() {
|
||||
glDeleteVertexArrays(1, &_quad);
|
||||
_quad = 0;
|
||||
|
||||
glDeleteBuffers(1, &_vertexPositionBuffer);
|
||||
_vertexPositionBuffer = 0;
|
||||
|
||||
_textureFile = nullptr;
|
||||
_texture = nullptr;
|
||||
|
||||
global::renderEngine.removeRenderProgram(_shader.get());
|
||||
_shader = nullptr;
|
||||
|
||||
global::renderEngine.removeRenderProgram(_geometryOnlyShader.get());
|
||||
_geometryOnlyShader = nullptr;
|
||||
}
|
||||
|
||||
void RingsComponent::draw(
|
||||
const RenderData& data,
|
||||
const RingsComponent::RenderPass renderPass,
|
||||
const ShadowComponent::ShadowMapData& shadowData
|
||||
) {
|
||||
|
||||
if (renderPass == GeometryAndShading) {
|
||||
_shader->activate();
|
||||
}
|
||||
else if (renderPass == GeometryOnly) {
|
||||
_geometryOnlyShader->activate();
|
||||
}
|
||||
|
||||
const glm::dmat4 modelTransform =
|
||||
glm::translate(glm::dmat4(1.0), data.modelTransform.translation) *
|
||||
glm::dmat4(data.modelTransform.rotation) *
|
||||
glm::scale(glm::dmat4(1.0), glm::dvec3(data.modelTransform.scale));
|
||||
|
||||
const glm::dmat4 modelViewTransform = data.camera.combinedViewMatrix() * modelTransform;
|
||||
const glm::dmat4 projectionMatrix = glm::dmat4(data.camera.projectionMatrix());
|
||||
|
||||
ghoul::opengl::TextureUnit unit;
|
||||
if (renderPass == GeometryAndShading) {
|
||||
_shader->setUniform(_uniformCache.modelViewMatrix, modelViewTransform);
|
||||
_shader->setUniform(_uniformCache.projectionMatrix, projectionMatrix);
|
||||
_shader->setUniform(_uniformCache.textureOffset, _offset);
|
||||
_shader->setUniform(_uniformCache.transparency, _transparency);
|
||||
_shader->setUniform(_uniformCache.nightFactor, _nightFactor);
|
||||
_shader->setUniform(_uniformCache.sunPosition, _sunPosition);
|
||||
|
||||
unit.activate();
|
||||
_texture->bind();
|
||||
_shader->setUniform(_uniformCache.texture, unit);
|
||||
|
||||
// Adding the model transformation to the final shadow matrix so we have a
|
||||
// complete transformation from the model coordinates to the clip space of
|
||||
// the light position.
|
||||
_shader->setUniform("shadowMatrix", shadowData.shadowMatrix * modelTransform);
|
||||
|
||||
ghoul::opengl::TextureUnit shadowMapUnit;
|
||||
shadowMapUnit.activate();
|
||||
glBindTexture(GL_TEXTURE_2D, shadowData.shadowDepthTexture);
|
||||
|
||||
_shader->setUniform("shadowMap", shadowMapUnit);
|
||||
|
||||
// DEBUGGING
|
||||
ghoul::opengl::TextureUnit shadowTextureUnit;
|
||||
shadowTextureUnit.activate();
|
||||
glBindTexture(GL_TEXTURE_2D, shadowData.positionInLightSpaceTexture);
|
||||
_shader->setUniform("shadowPositionTexture", shadowTextureUnit);
|
||||
_shader->setUniform("objectToLightSpaceMatrix",
|
||||
shadowData.worldToLightSpaceMatrix * modelTransform);
|
||||
|
||||
}
|
||||
else if (renderPass == GeometryOnly) {
|
||||
_geometryOnlyShader->setUniform(
|
||||
_geomUniformCache.modelViewMatrix,
|
||||
modelViewTransform
|
||||
);
|
||||
_geometryOnlyShader->setUniform(
|
||||
_geomUniformCache.projectionMatrix,
|
||||
projectionMatrix
|
||||
);
|
||||
_geometryOnlyShader->setUniform(
|
||||
_geomUniformCache.textureOffset,
|
||||
_offset
|
||||
);
|
||||
}
|
||||
|
||||
glEnable(GL_DEPTH_TEST);
|
||||
glDisable(GL_CULL_FACE);
|
||||
|
||||
glBindVertexArray(_quad);
|
||||
glDrawArrays(GL_TRIANGLES, 0, 6);
|
||||
|
||||
glEnable(GL_CULL_FACE);
|
||||
|
||||
if (renderPass == GeometryAndShading) {
|
||||
_shader->deactivate();
|
||||
}
|
||||
else if (renderPass == GeometryOnly) {
|
||||
_geometryOnlyShader->deactivate();
|
||||
}
|
||||
}
|
||||
|
||||
void RingsComponent::update(const UpdateData& data) {
|
||||
if (_shader->isDirty()) {
|
||||
_shader->rebuildFromFile();
|
||||
ghoul::opengl::updateUniformLocations(*_shader, _uniformCache, UniformNames);
|
||||
}
|
||||
|
||||
if (_geometryOnlyShader->isDirty()) {
|
||||
_geometryOnlyShader->rebuildFromFile();
|
||||
ghoul::opengl::updateUniformLocations(
|
||||
*_geometryOnlyShader,
|
||||
_geomUniformCache,
|
||||
GeomUniformNames
|
||||
);
|
||||
}
|
||||
|
||||
if (_planeIsDirty) {
|
||||
createPlane();
|
||||
_planeIsDirty = false;
|
||||
}
|
||||
|
||||
if (_textureIsDirty) {
|
||||
loadTexture();
|
||||
_textureIsDirty = false;
|
||||
}
|
||||
|
||||
_sunPosition = glm::normalize(
|
||||
global::renderEngine.scene()->sceneGraphNode("Sun")->worldPosition() -
|
||||
data.modelTransform.translation
|
||||
);
|
||||
}
|
||||
|
||||
void RingsComponent::loadTexture() {
|
||||
if (!_texturePath.value().empty()) {
|
||||
using namespace ghoul::io;
|
||||
using namespace ghoul::opengl;
|
||||
std::unique_ptr<Texture> texture = TextureReader::ref().loadTexture(
|
||||
absPath(_texturePath)
|
||||
);
|
||||
|
||||
if (texture) {
|
||||
LDEBUGC(
|
||||
"RingsComponent",
|
||||
fmt::format("Loaded texture from '{}'", absPath(_texturePath))
|
||||
);
|
||||
_texture = std::move(texture);
|
||||
|
||||
_texture->uploadTexture();
|
||||
_texture->setFilter(ghoul::opengl::Texture::FilterMode::AnisotropicMipMap);
|
||||
|
||||
_textureFile = std::make_unique<ghoul::filesystem::File>(_texturePath);
|
||||
_textureFile->setCallback(
|
||||
[&](const ghoul::filesystem::File&) { _textureIsDirty = true; }
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void RingsComponent::createPlane() {
|
||||
const GLfloat size = _size;
|
||||
|
||||
struct VertexData {
|
||||
GLfloat x;
|
||||
GLfloat y;
|
||||
GLfloat s;
|
||||
GLfloat t;
|
||||
};
|
||||
|
||||
VertexData data[] = {
|
||||
{ -size, -size, 0.f, 0.f },
|
||||
{ size, size, 1.f, 1.f },
|
||||
{ -size, size, 0.f, 1.f },
|
||||
{ -size, -size, 0.f, 0.f },
|
||||
{ size, -size, 1.f, 0.f },
|
||||
{ size, size, 1.f, 1.f },
|
||||
};
|
||||
|
||||
glBindVertexArray(_quad);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, _vertexPositionBuffer);
|
||||
glBufferData(GL_ARRAY_BUFFER, sizeof(data), data, GL_STATIC_DRAW);
|
||||
glEnableVertexAttribArray(0);
|
||||
glVertexAttribPointer(
|
||||
0,
|
||||
2,
|
||||
GL_FLOAT,
|
||||
GL_FALSE,
|
||||
sizeof(VertexData),
|
||||
nullptr
|
||||
);
|
||||
glEnableVertexAttribArray(1);
|
||||
glVertexAttribPointer(
|
||||
1,
|
||||
2,
|
||||
GL_FLOAT,
|
||||
GL_FALSE,
|
||||
sizeof(VertexData),
|
||||
reinterpret_cast<void*>(offsetof(VertexData, s)) // NOLINT
|
||||
);
|
||||
}
|
||||
|
||||
bool RingsComponent::isEnabled() const {
|
||||
return _enabled;
|
||||
}
|
||||
} // namespace openspace
|
||||
Reference in New Issue
Block a user