vsgXchange - 3rd party formats support
The vsgXchange library is a companion library that provides support for a range of 3rd party image and model file formats and http support. A number of these features require external dependencies that are checked for by CMake when building vsgXchange, if they are found the associated ReaderWriter is built and included in the vsgXchange::all composite ReaderWriter, you can assign this to the vsg::Options object as in the example below to add support for all the available formats, or you can add each ReaderWriter individually. Doing the latter allows you to control the order in which ReaderWriters are invoked as well as to select just the ones that are important to your application in order to reduce the overall footprint of your application.
Usage
vsgXchange is leveraged by assigning the ReaderWriters it provides to a vsg::Options object, then passing this to the vsg::read/write calls. The vsgXchange::all composite ReaderWriter adds support for all the file formats provided by vsgXchange. Here’s an example of usage:
#include <vsg/all.h>
#include <vsgXchange/all.h>
{
// create options object that is used to guide IO operations
auto options = vsg::Options::create();
options->add(vsgXchange::all::create());
// read a GLTF model
auto model = vsg::read_cast<vsg::Node>("mymodel.gltf", options);
// read a JPEG image
auto image = vsg::read_cast<vsg::Data>("myimage.jpg", options);
// read a model from the internet leveraging the libcurl ReaderWriter
auto scene = vsg::read_cast<vsg::Node>("https://www.myserver.com/mypageddatabase.vsgb", options);
}
Supported formats
While the implementation of ReaderWriters that have external dependencies are only compiled in when they are available, the public interface for all possible ReaderWriter is declared in the include/vsgXchange directory. The way the fixed public interface is decoupled from the optionally built implementation is using the Fascade Design Pattern, with the public ReaderWriter classes deferring their implementations, they are provided by either a fallback non op implementation or the full implementation when the dependency is available. The available ReaderWriters, the associated dependencies and the formats supported are:
| ReaderWriter | Dependency | Features |
| vsgXchange::all | Composite ReaderWriter that bundles all ReaderWriters supported by core VSG and vsgXchange | |
| vsgXchange::images | Bundles all supported image ReaderWriters | |
| vsgXchange::models | Bundles all supported model ReaderWriters | |
| vsgXchange::stbi | Support for PNG, JPEG, GIF images | |
| vsgXchange::dds | Support for DDS images | |
| vsgXchange::cpp | Write objects to .cpp files for compiling into programs | |
| vsgXchange::curl | libcurl | reading from http and https |
| vsgXchange::openexr | OpenEXP | reading .exr images |
| vsgXchange::freetype | Freetype | reading TrueType etc. fonts |
| vsgXchange::assimp | assimp | Reading GLTF, OBJ, 3DS, LWO etc. models |
| vsgXchange::GDAL | GDAL | reading GIS Imagery and DEM data |
| vsgXchange::osg2vsg | osg2vsg | Read OpenSceneGraph supported image and |
| model formats |
vsgXchange’s CMake scripts automatically generate the include/vsgXchange/Version.h header that provides #define’s for each ReaderWriter so you can test at compile time if you so wish, and each optionally compiled ReaderWriter has a flag to say whether it’s supported or not, so you can test for it at runtime. What follows is what you’ll see in the Version.h header if you have built against all the dependencies:
/// standard Features
#define vsgXchange_all
#define vsgXchange_images
#define vsgXchange_models
#define vsgXchange_stbi
#define vsgXchange_dds
#define vsgXchange_ktx
#define vsgXchange_spv
#define vsgXchange_cpp
/// optional Features
#define vsgXchange_curl
#define vsgXchange_openexr
#define vsgXchange_freetype
#define vsgXchange_assimp
#define vsgXchange_GDAL
#define vsgXchange_OSG
To list the supported features at runtime, you call the ReaderWriter::getFeatures(Features&) method, this returns true when the ReaderWriter is implemented and adds the supported features to the feature structure, and returns false if the ReaderWriter is not supported - such as when vsgXchange is not compiled against the required dependency.
vsgconv
The vsgXchange library provides a vsgconv utility program that you can use in the console to convert between different file formats:
vsgconv FlightHelmet.gltf helmet.vsgb
To list all the features supported by vsgXchange you can also run the vsgconv utility program in the console with the –features option:
$ vsgconv --features
vsgXchange::all
vsgXchange::curl provides support for 0 extensions, and 2 protocols.
Protocols Supported ReaderWriter methods
---------- ------------------------------
http read(vsg::Path, ..)
https read(vsg::Path, ..)
vsg::Options::Value type
------------------- ----
CURLOPT_SSL_OPTIONS uint32_t
vsg::VSG provides support for 2 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.vsgb read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
.vsgt read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
vsg::spirv provides support for 1 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.spv read(vsg::Path, ..) write(vsg::Path, ..)
vsg::glsl provides support for 16 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.comp read(vsg::Path, ..) write(vsg::Path, ..)
.frag read(vsg::Path, ..) write(vsg::Path, ..)
.geom read(vsg::Path, ..) write(vsg::Path, ..)
.glsl read(vsg::Path, ..) write(vsg::Path, ..)
.hlsl read(vsg::Path, ..) write(vsg::Path, ..)
.mesh read(vsg::Path, ..) write(vsg::Path, ..)
.rahit read(vsg::Path, ..) write(vsg::Path, ..)
.rcall read(vsg::Path, ..) write(vsg::Path, ..)
.rchit read(vsg::Path, ..) write(vsg::Path, ..)
.rgen read(vsg::Path, ..) write(vsg::Path, ..)
.rint read(vsg::Path, ..) write(vsg::Path, ..)
.rmiss read(vsg::Path, ..) write(vsg::Path, ..)
.task read(vsg::Path, ..) write(vsg::Path, ..)
.tesc read(vsg::Path, ..) write(vsg::Path, ..)
.tese read(vsg::Path, ..) write(vsg::Path, ..)
.vert read(vsg::Path, ..) write(vsg::Path, ..)
vsg::txt provides support for 7 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.bat read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.json read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.md read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.sh read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.text read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.txt read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.xml read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
vsgXchange::cpp provides support for 1 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.cpp write(vsg::Path, ..)
vsgXchange::stbi provides support for 9 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.bmp read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
.jpe read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
.jpeg read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
.jpg read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
.pgm read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.png read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
.ppm read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.psd read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.tga read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
vsg::Options::Value type
------------------- ----
jpeg_quality int
vsgXchange::dds provides support for 1 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.dds read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
vsgXchange::ktx provides support for 2 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.ktx read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ktx2 read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
vsgXchange::openexr provides support for 1 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.exr read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
vsgXchange::freetype provides support for 11 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.cef read(vsg::Path, ..)
.cff read(vsg::Path, ..)
.cid read(vsg::Path, ..)
.fnt read(vsg::Path, ..)
.fon read(vsg::Path, ..)
.otf read(vsg::Path, ..)
.pfa read(vsg::Path, ..)
.pfb read(vsg::Path, ..)
.ttc read(vsg::Path, ..)
.ttf read(vsg::Path, ..)
.woff read(vsg::Path, ..)
vsg::Options::Value type
------------------- ----
quad_margin_ratio float
texel_margin_ratio float
vsgXchange::assimp provides support for 70 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.3d read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.3ds read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.3mf read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ac read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ac3d read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.acc read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.amf read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ase read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ask read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.assbin read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.b3d read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.blend read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.bsp read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.bvh read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.cob read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.csm read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.dae read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.dxf read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.enff read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.fbx read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.glb read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.gltf read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.hmp read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ifc read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ifczip read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.iqm read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.irr read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.irrmesh read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.lwo read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.lws read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.lxo read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.md2 read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.md3 read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.md5anim read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.md5camera read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.md5mesh read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.mdc read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.mdl read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.mesh read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.mesh.xml read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.mot read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ms3d read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ndo read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.nff read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.obj read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.off read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ogex read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.pk3 read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ply read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.pmx read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.prj read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.q3o read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.q3s read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.raw read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.scn read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.sib read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.smd read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.step read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.stl read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.stp read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.ter read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.uc read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.vta read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.x read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.x3d read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.x3db read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.xgl read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.xml read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.zae read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
.zgl read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
vsg::Options::Value type
------------------- ----
crease_angle float
discard_empty_nodes bool
generate_sharp_normals bool
generate_smooth_normals bool
two_sided bool
vsgXchange::GDAL provides support for 93 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.ACE2 read(vsg::Path, ..)
.asc read(vsg::Path, ..)
.bag read(vsg::Path, ..)
.bil read(vsg::Path, ..)
.bin read(vsg::Path, ..)
.blx read(vsg::Path, ..)
.bmp read(vsg::Path, ..)
.bt read(vsg::Path, ..)
.byn read(vsg::Path, ..)
.cal read(vsg::Path, ..)
.ct1 read(vsg::Path, ..)
.cub read(vsg::Path, ..)
.dat read(vsg::Path, ..)
.ddf read(vsg::Path, ..)
.dem read(vsg::Path, ..)
.dgrda read(vsg::Path, ..)
.dt0 read(vsg::Path, ..)
.dt1 read(vsg::Path, ..)
.dt2 read(vsg::Path, ..)
.dwg read(vsg::Path, ..)
.err read(vsg::Path, ..)
.ers read(vsg::Path, ..)
.fits read(vsg::Path, ..)
.gen read(vsg::Path, ..)
.gff read(vsg::Path, ..)
.gif read(vsg::Path, ..)
.gpkg read(vsg::Path, ..)
.grb read(vsg::Path, ..)
.grb2 read(vsg::Path, ..)
.grc read(vsg::Path, ..)
.grd read(vsg::Path, ..)
.grib2 read(vsg::Path, ..)
.gsb read(vsg::Path, ..)
.gtx read(vsg::Path, ..)
.gvb read(vsg::Path, ..)
.gxf read(vsg::Path, ..)
.h5 read(vsg::Path, ..)
.hdf read(vsg::Path, ..)
.hdf5 read(vsg::Path, ..)
.hdr read(vsg::Path, ..)
.heic read(vsg::Path, ..)
.hf2 read(vsg::Path, ..)
.hgt read(vsg::Path, ..)
.img read(vsg::Path, ..)
.isg read(vsg::Path, ..)
.j2k read(vsg::Path, ..)
.jls read(vsg::Path, ..)
.jp2 read(vsg::Path, ..)
.jpeg read(vsg::Path, ..)
.jpg read(vsg::Path, ..)
.json read(vsg::Path, ..)
.kml read(vsg::Path, ..)
.kmz read(vsg::Path, ..)
.kro read(vsg::Path, ..)
.lbl read(vsg::Path, ..)
.lcp read(vsg::Path, ..)
.map read(vsg::Path, ..)
.mbtiles read(vsg::Path, ..)
.mem read(vsg::Path, ..)
.mpl read(vsg::Path, ..)
.mpr read(vsg::Path, ..)
.mrf read(vsg::Path, ..)
.n1 read(vsg::Path, ..)
.nat read(vsg::Path, ..)
.nc read(vsg::Path, ..)
.ntf read(vsg::Path, ..)
.pdf read(vsg::Path, ..)
.pgm read(vsg::Path, ..)
.pix read(vsg::Path, ..)
.png read(vsg::Path, ..)
.pnm read(vsg::Path, ..)
.ppi read(vsg::Path, ..)
.ppm read(vsg::Path, ..)
.prf read(vsg::Path, ..)
.rda read(vsg::Path, ..)
.rgb read(vsg::Path, ..)
.rik read(vsg::Path, ..)
.rst read(vsg::Path, ..)
.rsw read(vsg::Path, ..)
.sdat read(vsg::Path, ..)
.sg-grd-z read(vsg::Path, ..)
.sigdem read(vsg::Path, ..)
.sqlite read(vsg::Path, ..)
.ter read(vsg::Path, ..)
.tga read(vsg::Path, ..)
.tif read(vsg::Path, ..)
.tiff read(vsg::Path, ..)
.toc read(vsg::Path, ..)
.vrt read(vsg::Path, ..)
.webp read(vsg::Path, ..)
.xml read(vsg::Path, ..)
.xpm read(vsg::Path, ..)
.xyz read(vsg::Path, ..)
osg2vsg::OSG provides support for 3 extensions, and 0 protocols.
Extensions Supported ReaderWriter methods
---------- ------------------------------
.vsga read(vsg::Path, ..)
.vsgb read(vsg::Path, ..)
.vsgt read(vsg::Path, ..)
vsg::Options::Value type
------------------- ----
original_converter bool
read_build_options string
write_build_options string
Options specific to a ReaderWriter are specified on the commandline using two dashes:
vsgconv FlightHelmet.gltf helmet.vsgb --discard_empty_nodes false
Using vsgXchange::cpp & vsgconv to create compilable objects
The vsgXchange::cpp ReaderWriter enables programmers to convert all vsg::Object types to source files that can be included into the build of your applications, this can be used for data, scene graphs or shaders/shadersets. You can use vsgconv to do this conversion in the console:
vsgconv shaders/shader.vert shader_vert.cpp
The generated shader_vert.cpp looks like this:
#include <vsg/io/VSG.h>
#include <vsg/io/mem_stream.h>
static auto shader_vert = []() {
static const char str[] =
R"(#vsga 1.0.5
Root id=1 vsg::ShaderStage
{
userObjects 0
stage 1
entryPointName "main"
module id=2 vsg::ShaderModule
{
userObjects 0
hints id=0
source "#version 450
#extension GL_ARB_separate_shader_objects : enable
layout(set = 0, binding = 0) uniform ProjectionMatrix { mat4 matrix; } projection;
layout(set = 0, binding = 1) uniform ViewMatrix { mat4 matrix; } view;
layout(set = 0, binding = 2) uniform ModelMatrix { mat4 matrix; } model;
layout(location = 0) in vec3 inPosition;
layout(location = 1) in vec3 inColor;
layout(location = 2) in vec2 inTexCoord;
layout(location = 0) out vec3 fragColor;
layout(location = 1) out vec2 fragTexCoord;
out gl_PerVertex {
vec4 gl_Position;
};
void main() {
gl_Position = projection.matrix * view.matrix * model.matrix * vec4(inPosition, 1.0);
fragColor = inColor;
fragTexCoord = inTexCoord;
}"
code 454
119734787 65536 524299 54 0 131089 1 393227 1 1280527431 1685353262 808793134
0 196622 0 1 720911 0 4 1852399981 0 10 34 45
46 50 52 196611 2 450 589828 1096764487 1935622738 1918988389 1600484449 1684105331
1868526181 1667590754 29556 262149 4 1852399981 0 393221 8 1348430951 1700164197 2019914866
0 393222 8 0 1348430951 1953067887 7237481 196613 10 0 458757 14
1785688656 1769235301 1632464495 2020176500 0 327686 14 0 1920229741 30825 327685 16
1785688688 1769235301 28271 327685 20 2003134806 1920229709 30825 327686 20 0 1920229741
30825 262149 22 2003134838 0 327685 26 1701080909 1952533868 7891314 327686 26
0 1920229741 30825 262149 28 1701080941 108 327685 34 1867542121 1769236851 28271
327685 45 1734439526 1869377347 114 262149 46 1866690153 7499628 393221 50 1734439526
1131963732 1685221231 0 327685 52 1700032105 1869562744 25714 327752 8 0 11
0 196679 8 2 262216 14 0 5 327752 14 0 35
0 327752 14 0 7 16 196679 14 2 262215 16 34
0 262215 16 33 0 262216 20 0 5 327752 20 0
35 0 327752 20 0 7 16 196679 20 2 262215 22
34 0 262215 22 33 1 262216 26 0 5 327752 26
0 35 0 327752 26 0 7 16 196679 26 2 262215
28 34 0 262215 28 33 2 262215 34 30 0 262215
45 30 0 262215 46 30 1 262215 50 30 1 262215
52 30 2 131091 2 196641 3 2 196630 6 32 262167
7 6 4 196638 8 7 262176 9 3 8 262203 9
10 3 262165 11 32 1 262187 11 12 0 262168 13
7 4 196638 14 13 262176 15 2 14 262203 15 16
2 262176 17 2 13 196638 20 13 262176 21 2 20
262203 21 22 2 196638 26 13 262176 27 2 26 262203
27 28 2 262167 32 6 3 262176 33 1 32 262203
33 34 1 262187 6 36 1065353216 262176 42 3 7 262176
44 3 32 262203 44 45 3 262203 33 46 1 262167
48 6 2 262176 49 3 48 262203 49 50 3 262176
51 1 48 262203 51 52 1 327734 2 4 0 3
131320 5 327745 17 18 16 12 262205 13 19 18 327745
17 23 22 12 262205 13 24 23 327826 13 25 19
24 327745 17 29 28 12 262205 13 30 29 327826 13
31 25 30 262205 32 35 34 327761 6 37 35 0
327761 6 38 35 1 327761 6 39 35 2 458832 7
40 37 38 39 36 327825 7 41 31 40 327745 42
43 10 12 196670 43 41 262205 32 47 46 196670 45
47 262205 48 53 52 196670 50 53 65789 65592
}
NumSpecializationConstants 0
}
)";
vsg::VSG io;
return io.read_cast<vsg::ShaderStage>(reinterpret_cast<const uint8_t*>(str), sizeof(str));
};
In the above example the vsgconv utility has automatically compiled the GLSL shader source to SPIRV code for you, so at runtime there is no need for the VSG to compile the shader. You can then invoke this from your C++ code:
#include "shader_vert.cpp"
{
...
auto shader = shader_vert();
...
}
Examples of compiling objects into libraries/applications can be found in the VulkanSceneGraph codebase, for instance the text related shaders are used in VulkanSceneGraph/src/vsg/text/Text.cpp which includes the VulkanSceneGraph/src/vsg/text/shaders/text_ShaderSet.cpp. The text_ShaderSet.cpp is created by the vsgshaderset utility found in vsgExamples.
| Prev: read/write | Next: Serialization |