mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-01-02 09:41:13 -06:00
440 lines
19 KiB
C++
440 lines
19 KiB
C++
/*****************************************************************************************
|
|
* *
|
|
* OpenSpace *
|
|
* *
|
|
* Copyright (c) 2014-2016 *
|
|
* *
|
|
* 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/chunk/chunkrenderer.h>
|
|
#include <modules/globebrowsing/chunk/chunkedlodglobe.h>
|
|
#include <modules/globebrowsing/tile/layeredtextures.h>
|
|
|
|
// open space includes
|
|
#include <openspace/engine/wrapper/windowwrapper.h>
|
|
#include <openspace/engine/openspaceengine.h>
|
|
#include <openspace/rendering/renderengine.h>
|
|
|
|
// ghoul includes
|
|
#include <ghoul/misc/assert.h>
|
|
#include <ghoul/opengl/texture.h>
|
|
#include <ghoul/opengl/textureunit.h>
|
|
|
|
// STL includes
|
|
#include <sstream>
|
|
|
|
#define _USE_MATH_DEFINES
|
|
#include <math.h>
|
|
|
|
namespace {
|
|
const std::string _loggerCat = "PatchRenderer";
|
|
|
|
const std::string keyFrame = "Frame";
|
|
const std::string keyGeometry = "Geometry";
|
|
const std::string keyShading = "PerformShading";
|
|
|
|
const std::string keyBody = "Body";
|
|
}
|
|
|
|
namespace openspace {
|
|
|
|
|
|
ChunkRenderer::ChunkRenderer(
|
|
std::shared_ptr<Grid> grid,
|
|
std::shared_ptr<TileProviderManager> tileProviderManager)
|
|
: _tileProviderManager(tileProviderManager)
|
|
, _grid(grid)
|
|
{
|
|
_globalRenderingShaderProvider = std::shared_ptr<LayeredTextureShaderProvider>
|
|
(new LayeredTextureShaderProvider(
|
|
"GlobalChunkedLodPatch",
|
|
"${MODULE_GLOBEBROWSING}/shaders/globalchunkedlodpatch_vs.glsl",
|
|
"${MODULE_GLOBEBROWSING}/shaders/globalchunkedlodpatch_fs.glsl"));
|
|
|
|
_localRenderingShaderProvider = std::shared_ptr<LayeredTextureShaderProvider>
|
|
(new LayeredTextureShaderProvider(
|
|
"LocalChunkedLodPatch",
|
|
"${MODULE_GLOBEBROWSING}/shaders/localchunkedlodpatch_vs.glsl",
|
|
"${MODULE_GLOBEBROWSING}/shaders/localchunkedlodpatch_fs.glsl"));
|
|
|
|
_globalProgramUniformHandler = std::shared_ptr<LayeredTextureShaderUniformIdHandler>
|
|
(new LayeredTextureShaderUniformIdHandler());
|
|
|
|
_localProgramUniformHandler = std::shared_ptr<LayeredTextureShaderUniformIdHandler>
|
|
(new LayeredTextureShaderUniformIdHandler());
|
|
|
|
}
|
|
|
|
void ChunkRenderer::renderChunk(const Chunk& chunk, const RenderData& data) {
|
|
if (chunk.index().level < 10) {
|
|
renderChunkGlobally(chunk, data);
|
|
}
|
|
else {
|
|
renderChunkLocally(chunk, data);
|
|
}
|
|
}
|
|
|
|
void ChunkRenderer::update() {
|
|
// unued atm. Could be used for caching or precalculating
|
|
}
|
|
|
|
|
|
void ChunkRenderer::setDepthTransformUniforms(
|
|
std::shared_ptr<LayeredTextureShaderUniformIdHandler> uniformIdHandler,
|
|
LayeredTextures::TextureCategory textureCategory,
|
|
LayeredTextureShaderUniformIdHandler::BlendLayerSuffix blendLayerSuffix,
|
|
size_t layerIndex,
|
|
const TileDepthTransform& tileDepthTransform)
|
|
{
|
|
uniformIdHandler->programObject().setUniform(
|
|
uniformIdHandler->getId(
|
|
textureCategory,
|
|
blendLayerSuffix,
|
|
layerIndex,
|
|
LayeredTextureShaderUniformIdHandler::GlslTileDataId::depthTransform_depthScale),
|
|
tileDepthTransform.depthScale);
|
|
|
|
uniformIdHandler->programObject().setUniform(
|
|
uniformIdHandler->getId(
|
|
textureCategory,
|
|
blendLayerSuffix,
|
|
layerIndex,
|
|
LayeredTextureShaderUniformIdHandler::GlslTileDataId::depthTransform_depthOffset),
|
|
tileDepthTransform.depthOffset);
|
|
|
|
}
|
|
|
|
void ChunkRenderer::activateTileAndSetTileUniforms(
|
|
std::shared_ptr<LayeredTextureShaderUniformIdHandler> uniformIdHandler,
|
|
LayeredTextures::TextureCategory textureCategory,
|
|
LayeredTextureShaderUniformIdHandler::BlendLayerSuffix blendLayerSuffix,
|
|
size_t layerIndex,
|
|
ghoul::opengl::TextureUnit& texUnit,
|
|
const TileAndTransform& tileAndTransform)
|
|
{
|
|
|
|
// Blend tile with two parents
|
|
// The texture needs a unit to sample from
|
|
texUnit.activate();
|
|
tileAndTransform.tile.texture->bind();
|
|
|
|
uniformIdHandler->programObject().setUniform(
|
|
uniformIdHandler->getId(
|
|
textureCategory,
|
|
blendLayerSuffix,
|
|
layerIndex,
|
|
LayeredTextureShaderUniformIdHandler::GlslTileDataId::textureSampler),
|
|
texUnit);
|
|
uniformIdHandler->programObject().setUniform(
|
|
uniformIdHandler->getId(
|
|
textureCategory,
|
|
blendLayerSuffix,
|
|
layerIndex,
|
|
LayeredTextureShaderUniformIdHandler::GlslTileDataId::uvTransform_uvScale),
|
|
tileAndTransform.uvTransform.uvScale);
|
|
uniformIdHandler->programObject().setUniform(
|
|
uniformIdHandler->getId(
|
|
textureCategory,
|
|
blendLayerSuffix,
|
|
layerIndex,
|
|
LayeredTextureShaderUniformIdHandler::GlslTileDataId::uvTransform_uvOffset),
|
|
tileAndTransform.uvTransform.uvOffset);
|
|
}
|
|
|
|
|
|
ProgramObject* ChunkRenderer::getActivatedProgramWithTileData(
|
|
LayeredTextureShaderProvider* layeredTextureShaderProvider,
|
|
std::shared_ptr<LayeredTextureShaderUniformIdHandler> programUniformHandler,
|
|
const Chunk& chunk)
|
|
{
|
|
const ChunkIndex& chunkIndex = chunk.index();
|
|
|
|
std::array<std::vector<std::shared_ptr<TileProvider> >,
|
|
LayeredTextures::NUM_TEXTURE_CATEGORIES> tileProviders;
|
|
LayeredTexturePreprocessingData layeredTexturePreprocessingData;
|
|
|
|
for (size_t category = 0; category < LayeredTextures::NUM_TEXTURE_CATEGORIES; category++)
|
|
{
|
|
tileProviders[category] = _tileProviderManager->getActivatedLayerCategory(
|
|
LayeredTextures::TextureCategory(category));
|
|
|
|
LayeredTextureInfo layeredTextureInfo;
|
|
layeredTextureInfo.lastLayerIdx = tileProviders[category].size() - 1;
|
|
layeredTextureInfo.layerBlendingEnabled = chunk.owner()->blendProperties[category];
|
|
|
|
layeredTexturePreprocessingData.layeredTextureInfo[category] = layeredTextureInfo;
|
|
}
|
|
|
|
layeredTexturePreprocessingData.keyValuePairs.push_back(
|
|
std::pair<std::string, std::string>(
|
|
"useAtmosphere",
|
|
std::to_string(chunk.owner()->atmosphereEnabled)));
|
|
|
|
layeredTexturePreprocessingData.keyValuePairs.push_back(
|
|
std::pair<std::string, std::string>(
|
|
"showChunkEdges",
|
|
std::to_string(chunk.owner()->showChunkEdges)));
|
|
|
|
|
|
// Now the shader program can be accessed
|
|
ProgramObject* programObject =
|
|
layeredTextureShaderProvider->getUpdatedShaderProgram(
|
|
layeredTexturePreprocessingData);
|
|
|
|
programUniformHandler->updateIdsIfNecessary(layeredTextureShaderProvider);
|
|
|
|
// Activate the shader program
|
|
programObject->activate();
|
|
|
|
// Initialize all texture units
|
|
struct BlendTexUnits {
|
|
ghoul::opengl::TextureUnit blendTexture0;
|
|
ghoul::opengl::TextureUnit blendTexture1;
|
|
ghoul::opengl::TextureUnit blendTexture2;
|
|
};
|
|
std::array<std::vector<BlendTexUnits>,
|
|
LayeredTextures::NUM_TEXTURE_CATEGORIES> texUnits;
|
|
for (size_t category = 0; category < LayeredTextures::NUM_TEXTURE_CATEGORIES; category++) {
|
|
texUnits[category].resize(tileProviders[category].size());
|
|
}
|
|
|
|
// Go through all the categories
|
|
for (size_t category = 0; category < LayeredTextures::NUM_TEXTURE_CATEGORIES; category++)
|
|
{
|
|
// Go through all the providers in this category
|
|
int i = 0;
|
|
for (auto it = tileProviders[category].begin(); it != tileProviders[category].end(); it++)
|
|
{
|
|
auto tileProvider = it->get();
|
|
|
|
// Get the texture that should be used for rendering
|
|
TileAndTransform tileAndTransform = TileSelector::getHighestResolutionTile(tileProvider, chunkIndex);
|
|
if (tileAndTransform.tile.status == Tile::Status::Unavailable) {
|
|
// don't render if no tile was available
|
|
programObject->deactivate();
|
|
return nullptr;
|
|
}
|
|
|
|
activateTileAndSetTileUniforms(
|
|
programUniformHandler,
|
|
LayeredTextures::TextureCategory(category),
|
|
LayeredTextureShaderUniformIdHandler::BlendLayerSuffix::none,
|
|
i,
|
|
texUnits[category][i].blendTexture0,
|
|
tileAndTransform);
|
|
|
|
// If blending is enabled, two more textures are needed
|
|
if (layeredTexturePreprocessingData.layeredTextureInfo[category].layerBlendingEnabled) {
|
|
TileAndTransform tileAndTransformParent1 = TileSelector::getHighestResolutionTile(tileProvider, chunkIndex, 1);
|
|
if (tileAndTransformParent1.tile.status == Tile::Status::Unavailable) {
|
|
tileAndTransformParent1 = tileAndTransform;
|
|
}
|
|
activateTileAndSetTileUniforms(
|
|
programUniformHandler,
|
|
LayeredTextures::TextureCategory(category),
|
|
LayeredTextureShaderUniformIdHandler::BlendLayerSuffix::Parent1,
|
|
i,
|
|
texUnits[category][i].blendTexture1,
|
|
tileAndTransformParent1);
|
|
|
|
TileAndTransform tileAndTransformParent2 = TileSelector::getHighestResolutionTile(tileProvider, chunkIndex, 2);
|
|
if (tileAndTransformParent2.tile.status == Tile::Status::Unavailable) {
|
|
tileAndTransformParent2 = tileAndTransformParent1;
|
|
}
|
|
activateTileAndSetTileUniforms(
|
|
programUniformHandler,
|
|
LayeredTextures::TextureCategory(category),
|
|
LayeredTextureShaderUniformIdHandler::BlendLayerSuffix::Parent2,
|
|
i,
|
|
texUnits[category][i].blendTexture2,
|
|
tileAndTransformParent2);
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
|
|
// Go through all the height maps and set depth tranforms
|
|
int i = 0;
|
|
for (auto it = tileProviders[LayeredTextures::HeightMaps].begin();
|
|
it != tileProviders[LayeredTextures::HeightMaps].end(); it++) {
|
|
auto tileProvider = *it;
|
|
|
|
TileDepthTransform depthTransform = tileProvider->depthTransform();
|
|
setDepthTransformUniforms(
|
|
programUniformHandler,
|
|
LayeredTextures::TextureCategory::HeightMaps,
|
|
LayeredTextureShaderUniformIdHandler::BlendLayerSuffix::none,
|
|
i,
|
|
depthTransform);
|
|
i++;
|
|
}
|
|
|
|
// The length of the skirts is proportional to its size
|
|
programObject->setUniform("skirtLength", min(static_cast<float>(chunk.surfacePatch().halfSize().lat * 1000000), 8700.0f));
|
|
programObject->setUniform("xSegments", _grid->xSegments());
|
|
|
|
return programObject;
|
|
}
|
|
|
|
void ChunkRenderer::renderChunkGlobally(const Chunk& chunk, const RenderData& data){
|
|
|
|
ProgramObject* programObject = getActivatedProgramWithTileData(
|
|
_globalRenderingShaderProvider.get(),
|
|
_globalProgramUniformHandler,
|
|
chunk);
|
|
if (programObject == nullptr) {
|
|
return;
|
|
}
|
|
|
|
const Ellipsoid& ellipsoid = chunk.owner()->ellipsoid();
|
|
|
|
bool performAnyBlending = false;
|
|
auto& categoriesBlendingEnabled = chunk.owner()->blendProperties;
|
|
for (int i = 0; i < categoriesBlendingEnabled.size(); ++i) {
|
|
LayeredTextures::TextureCategory category = (LayeredTextures::TextureCategory)i;
|
|
if(categoriesBlendingEnabled[category] && _tileProviderManager->getActivatedLayerCategory(category).size() > 0){
|
|
performAnyBlending = true;
|
|
break;
|
|
}
|
|
}
|
|
if(performAnyBlending) {
|
|
float distanceScaleFactor = chunk.owner()->lodScaleFactor * ellipsoid.minimumRadius();
|
|
programObject->setUniform("cameraPosition", vec3(data.camera.positionVec3()));
|
|
programObject->setUniform("distanceScaleFactor", distanceScaleFactor);
|
|
programObject->setUniform("chunkLevel", chunk.index().level);
|
|
}
|
|
|
|
// Calculate other uniform variables needed for rendering
|
|
Geodetic2 swCorner = chunk.surfacePatch().getCorner(Quad::SOUTH_WEST);
|
|
auto patchSize = chunk.surfacePatch().size();
|
|
|
|
// TODO : Model transform should be fetched as a matrix directly.
|
|
dmat4 modelTransform = dmat4(chunk.owner()->stateMatrix()); // Rotation
|
|
modelTransform = translate(dmat4(1), data.position.dvec3()) * modelTransform; // Translation
|
|
dmat4 viewTransform = data.camera.combinedViewMatrix();
|
|
mat4 modelViewTransform = mat4(viewTransform * modelTransform);
|
|
mat4 modelViewProjectionTransform = data.camera.projectionMatrix() * modelViewTransform;
|
|
|
|
// Upload the uniform variables
|
|
programObject->setUniform("modelViewProjectionTransform", modelViewProjectionTransform);
|
|
programObject->setUniform("minLatLon", vec2(swCorner.toLonLatVec2()));
|
|
programObject->setUniform("lonLatScalingFactor", vec2(patchSize.toLonLatVec2()));
|
|
programObject->setUniform("radiiSquared", vec3(ellipsoid.radiiSquared()));
|
|
|
|
if (_tileProviderManager->getActivatedLayerCategory(LayeredTextures::NightTextures).size() > 0) {
|
|
programObject->setUniform("modelViewTransform", modelViewTransform);
|
|
}
|
|
|
|
|
|
// OpenGL rendering settings
|
|
glEnable(GL_DEPTH_TEST);
|
|
glEnable(GL_CULL_FACE);
|
|
glCullFace(GL_BACK);
|
|
|
|
// render
|
|
_grid->geometry().drawUsingActiveProgram();
|
|
|
|
// disable shader
|
|
programObject->deactivate();
|
|
}
|
|
|
|
|
|
|
|
void ChunkRenderer::renderChunkLocally(const Chunk& chunk, const RenderData& data) {
|
|
|
|
ProgramObject* programObject = getActivatedProgramWithTileData(
|
|
_localRenderingShaderProvider.get(),
|
|
_localProgramUniformHandler,
|
|
chunk);
|
|
if (programObject == nullptr) {
|
|
return;
|
|
}
|
|
|
|
using namespace glm;
|
|
|
|
const Ellipsoid& ellipsoid = chunk.owner()->ellipsoid();
|
|
|
|
|
|
bool performAnyBlending = false;
|
|
auto& categoriesBlendingEnabled = chunk.owner()->blendProperties;
|
|
for (int i = 0; i < categoriesBlendingEnabled.size(); ++i) {
|
|
LayeredTextures::TextureCategory category = (LayeredTextures::TextureCategory)i;
|
|
if (categoriesBlendingEnabled[category] && _tileProviderManager->getActivatedLayerCategory(category).size() > 0) {
|
|
performAnyBlending = true;
|
|
break;
|
|
}
|
|
}
|
|
if (performAnyBlending) {
|
|
float distanceScaleFactor = chunk.owner()->lodScaleFactor * chunk.owner()->ellipsoid().minimumRadius();
|
|
programObject->setUniform("distanceScaleFactor", distanceScaleFactor);
|
|
programObject->setUniform("chunkLevel", chunk.index().level);
|
|
}
|
|
|
|
// Calculate other uniform variables needed for rendering
|
|
|
|
// TODO : Model transform should be fetched as a matrix directly.
|
|
dmat4 modelTransform = translate(dmat4(1), data.position.dvec3());
|
|
dmat4 viewTransform = data.camera.combinedViewMatrix();
|
|
dmat4 modelViewTransform = viewTransform * modelTransform;
|
|
|
|
Geodetic2 sw = chunk.surfacePatch().getCorner(Quad::SOUTH_WEST);
|
|
Geodetic2 se = chunk.surfacePatch().getCorner(Quad::SOUTH_EAST);
|
|
Geodetic2 nw = chunk.surfacePatch().getCorner(Quad::NORTH_WEST);
|
|
Geodetic2 ne = chunk.surfacePatch().getCorner(Quad::NORTH_EAST);
|
|
|
|
// Get model space positions of the four control points
|
|
Vec3 patchSwModelSpace = ellipsoid.cartesianSurfacePosition(sw);
|
|
Vec3 patchSeModelSpace = ellipsoid.cartesianSurfacePosition(se);
|
|
Vec3 patchNwModelSpace = ellipsoid.cartesianSurfacePosition(nw);
|
|
Vec3 patchNeModelSpace = ellipsoid.cartesianSurfacePosition(ne);
|
|
|
|
// Transform all control points to camera space
|
|
Vec3 patchSwCameraSpace = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchSwModelSpace, 1));
|
|
Vec3 patchSeCameraSpace = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchSeModelSpace, 1));
|
|
Vec3 patchNwCameraSpace = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchNwModelSpace, 1));
|
|
Vec3 patchNeCameraSpace = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchNeModelSpace, 1));
|
|
|
|
// Send control points to shader
|
|
programObject->setUniform("p00", vec3(patchSwCameraSpace));
|
|
programObject->setUniform("p10", vec3(patchSeCameraSpace));
|
|
programObject->setUniform("p01", vec3(patchNwCameraSpace));
|
|
programObject->setUniform("p11", vec3(patchNeCameraSpace));
|
|
|
|
vec3 patchNormalCameraSpace = normalize(
|
|
cross(patchSeCameraSpace - patchSwCameraSpace,
|
|
patchNwCameraSpace - patchSwCameraSpace));
|
|
|
|
programObject->setUniform("patchNormalCameraSpace", patchNormalCameraSpace);
|
|
programObject->setUniform("projectionTransform", data.camera.projectionMatrix());
|
|
|
|
|
|
// OpenGL rendering settings
|
|
glEnable(GL_DEPTH_TEST);
|
|
glEnable(GL_CULL_FACE);
|
|
glCullFace(GL_BACK);
|
|
|
|
// render
|
|
_grid->geometry().drawUsingActiveProgram();
|
|
|
|
// disable shader
|
|
programObject->deactivate();
|
|
}
|
|
} // namespace openspace
|