/// <summary>
/// Creates a compute shader from the given <see cref="ShaderDescription"/> containing SPIR-V bytecode or GLSL source
/// code.
/// </summary>
/// <param name="factory">The <see cref="ResourceFactory"/> used to compile the translated shader code.</param>
/// <param name="computeShaderDescription">The compute shader's description.
/// <see cref="ShaderDescription.ShaderBytes"/> should contain SPIR-V bytecode or Vulkan-style GLSL source code which
/// can be compiled to SPIR-V.</param>
/// <param name="options">The <see cref="CrossCompileOptions"/> which will control the parameters used to translate the
/// shaders from SPIR-V to the target language.</param>
/// <returns>The compiled compute <see cref="Shader"/>.</returns>
public static Shader CreateFromSpirv(
this ResourceFactory factory,
ShaderDescription computeShaderDescription,
CrossCompileOptions options)
{
GraphicsBackend backend = factory.BackendType;
if (backend == GraphicsBackend.Vulkan)
{
computeShaderDescription.ShaderBytes = EnsureSpirv(computeShaderDescription);
return(factory.CreateShader(ref computeShaderDescription));
}
CrossCompileTarget target = GetCompilationTarget(factory.BackendType);
ComputeCompilationResult compilationResult = SpirvCompilation.CompileCompute(
computeShaderDescription.ShaderBytes,
target,
options);
string computeEntryPoint = (backend == GraphicsBackend.Metal && computeShaderDescription.EntryPoint == "main")
? "main0"
: computeShaderDescription.EntryPoint;
byte[] computeBytes = GetBytes(backend, compilationResult.ComputeShader);
return(factory.CreateShader(new ShaderDescription(
computeShaderDescription.Stage,
computeBytes,
computeEntryPoint)));
}
public ShaderVariantDescription(
string name,
VariantStageDescription[] shaders,
MacroDefinition[] macros,
CrossCompileOptions crossCompileOptions,
CrossCompileTarget[] targets)
{
Name = name;
Shaders = shaders;
Macros = macros;
CrossCompileOptions = crossCompileOptions;
Targets = targets;
}
/// <summary>
/// Creates a vertex and fragment shader pair from the given <see cref="ShaderDescription"/> pair containing SPIR-V
/// bytecode or GLSL source code.
/// </summary>
/// <param name="factory">The <see cref="ResourceFactory"/> used to compile the translated shader code.</param>
/// <param name="vertexShaderDescription">The vertex shader's description. <see cref="ShaderDescription.ShaderBytes"/>
/// should contain SPIR-V bytecode or Vulkan-style GLSL source code which can be compiled to SPIR-V.</param>
/// <param name="fragmentShaderDescription">The fragment shader's description.
/// <see cref="ShaderDescription.ShaderBytes"/> should contain SPIR-V bytecode or Vulkan-style GLSL source code which
/// can be compiled to SPIR-V.</param>
/// <param name="options">The <see cref="CrossCompileOptions"/> which will control the parameters used to translate the
/// shaders from SPIR-V to the target language.</param>
/// <returns>A two-element array, containing the vertex shader (element 0) and the fragment shader (element 1).</returns>
public static Shader[] CreateFromSpirv(
this ResourceFactory factory,
ShaderDescription vertexShaderDescription,
ShaderDescription fragmentShaderDescription,
CrossCompileOptions options)
{
GraphicsBackend backend = factory.BackendType;
if (backend == GraphicsBackend.Vulkan)
{
vertexShaderDescription.ShaderBytes = EnsureSpirv(vertexShaderDescription);
fragmentShaderDescription.ShaderBytes = EnsureSpirv(fragmentShaderDescription);
return(new Shader[]
{
factory.CreateShader(ref vertexShaderDescription),
factory.CreateShader(ref fragmentShaderDescription)
});
}
CrossCompileTarget target = GetCompilationTarget(factory.BackendType);
VertexFragmentCompilationResult compilationResult = SpirvCompilation.CompileVertexFragment(
vertexShaderDescription.ShaderBytes,
fragmentShaderDescription.ShaderBytes,
target,
options);
string vertexEntryPoint = (backend == GraphicsBackend.Metal && vertexShaderDescription.EntryPoint == "main")
? "main0"
: vertexShaderDescription.EntryPoint;
byte[] vertexBytes = GetBytes(backend, compilationResult.VertexShader);
Shader vertexShader = factory.CreateShader(new ShaderDescription(
vertexShaderDescription.Stage,
vertexBytes,
vertexEntryPoint));
string fragmentEntryPoint = (backend == GraphicsBackend.Metal && fragmentShaderDescription.EntryPoint == "main")
? "main0"
: fragmentShaderDescription.EntryPoint;
byte[] fragmentBytes = GetBytes(backend, compilationResult.FragmentShader);
Shader fragmentShader = factory.CreateShader(new ShaderDescription(
fragmentShaderDescription.Stage,
fragmentBytes,
fragmentEntryPoint));
return(new Shader[] { vertexShader, fragmentShader });
}
/// <summary>
/// Cross-compiles the given vertex-fragment pair into some target language.
/// </summary>
/// <param name="vsBytes">The vertex shader's SPIR-V bytecode or ASCII-encoded GLSL source code.</param>
/// <param name="fsBytes">The fragment shader's SPIR-V bytecode or ASCII-encoded GLSL source code.</param>
/// <param name="target">The target language.</param>
/// <param name="options">The options for shader translation.</param>
/// <returns>A <see cref="VertexFragmentCompilationResult"/> containing the compiled output.</returns>
public static unsafe VertexFragmentCompilationResult CompileVertexFragment(
byte[] vsBytes,
byte[] fsBytes,
CrossCompileTarget target,
CrossCompileOptions options)
{
int size1 = sizeof(CrossCompileInfo);
int size2 = sizeof(InteropArray);
byte[] vsSpirvBytes;
byte[] fsSpirvBytes;
if (Util.HasSpirvHeader(vsBytes))
{
vsSpirvBytes = vsBytes;
}
else
{
fixed(byte *sourceTextPtr = vsBytes)
{
SpirvCompilationResult vsCompileResult = CompileGlslToSpirv(
(uint)vsBytes.Length,
sourceTextPtr,
string.Empty,
ShaderStages.Vertex,
target == CrossCompileTarget.GLSL || target == CrossCompileTarget.ESSL,
0,
null);
vsSpirvBytes = vsCompileResult.SpirvBytes;
}
}
if (Util.HasSpirvHeader(fsBytes))
{
fsSpirvBytes = fsBytes;
}
else
{
fixed(byte *sourceTextPtr = fsBytes)
{
SpirvCompilationResult fsCompileResult = CompileGlslToSpirv(
(uint)fsBytes.Length,
sourceTextPtr,
string.Empty,
ShaderStages.Fragment,
target == CrossCompileTarget.GLSL || target == CrossCompileTarget.ESSL,
0,
null);
fsSpirvBytes = fsCompileResult.SpirvBytes;
}
}
int specConstantsCount = options.Specializations.Length;
NativeSpecializationConstant *nativeSpecConstants = stackalloc NativeSpecializationConstant[specConstantsCount];
for (int i = 0; i < specConstantsCount; i++)
{
nativeSpecConstants[i].ID = options.Specializations[i].ID;
nativeSpecConstants[i].Constant = options.Specializations[i].Data;
}
CrossCompileInfo info;
info.Target = target;
info.FixClipSpaceZ = options.FixClipSpaceZ;
info.InvertY = options.InvertVertexOutputY;
info.NormalizeResourceNames = options.NormalizeResourceNames;
fixed(byte *vsBytesPtr = vsSpirvBytes)
fixed(byte *fsBytesPtr = fsSpirvBytes)
{
info.VertexShader = new InteropArray((uint)vsSpirvBytes.Length / 4, vsBytesPtr);
info.FragmentShader = new InteropArray((uint)fsSpirvBytes.Length / 4, fsBytesPtr);
info.Specializations = new InteropArray((uint)specConstantsCount, nativeSpecConstants);
CompilationResult *result = null;
try
{
result = VeldridSpirvNative.CrossCompile(&info);
if (!result->Succeeded)
{
throw new SpirvCompilationException(
"Compilation failed: " + Util.GetString((byte *)result->GetData(0), result->GetLength(0)));
}
string vsCode = Util.GetString((byte *)result->GetData(0), result->GetLength(0));
string fsCode = Util.GetString((byte *)result->GetData(1), result->GetLength(1));
ReflectionInfo *reflInfo = &result->ReflectionInfo;
VertexElementDescription[] vertexElements = new VertexElementDescription[reflInfo->VertexElements.Count];
for (uint i = 0; i < reflInfo->VertexElements.Count; i++)
{
ref NativeVertexElementDescription nativeDesc
= ref reflInfo->VertexElements.Ref <NativeVertexElementDescription>(i);
vertexElements[i] = new VertexElementDescription(
Util.GetString((byte *)nativeDesc.Name.Data, nativeDesc.Name.Count),
nativeDesc.Semantic,
nativeDesc.Format,
nativeDesc.Offset);
}
ResourceLayoutDescription[] layouts = new ResourceLayoutDescription[reflInfo->ResourceLayouts.Count];
for (uint i = 0; i < reflInfo->ResourceLayouts.Count; i++)
{
ref NativeResourceLayoutDescription nativeDesc =
ref reflInfo->ResourceLayouts.Ref <NativeResourceLayoutDescription>(i);
layouts[i].Elements = new ResourceLayoutElementDescription[nativeDesc.ResourceElements.Count];
for (uint j = 0; j < nativeDesc.ResourceElements.Count; j++)
{
ref NativeResourceElementDescription elemDesc =
ref nativeDesc.ResourceElements.Ref <NativeResourceElementDescription>(j);
layouts[i].Elements[j] = new ResourceLayoutElementDescription(
Util.GetString((byte *)elemDesc.Name.Data, elemDesc.Name.Count),
elemDesc.Kind,
elemDesc.Stages,
elemDesc.Options);
}
}
/// <summary>
/// Cross-compiles the given vertex-fragment pair into some target language.
/// </summary>
/// <param name="vsBytes">The vertex shader's SPIR-V bytecode or ASCII-encoded GLSL source code.</param>
/// <param name="fsBytes">The fragment shader's SPIR-V bytecode or ASCII-encoded GLSL source code.</param>
/// <param name="target">The target language.</param>
/// <param name="options">The options for shader translation.</param>
/// <returns>A <see cref="VertexFragmentCompilationResult"/> containing the compiled output.</returns>
public static unsafe VertexFragmentCompilationResult CompileVertexFragment(
byte[] vsBytes,
byte[] fsBytes,
CrossCompileTarget target,
CrossCompileOptions options)
{
int size1 = sizeof(CrossCompileInfo);
int size2 = sizeof(InteropArray);
byte[] vsSpirvBytes;
byte[] fsSpirvBytes;
if (Util.HasSpirvHeader(vsBytes))
{
vsSpirvBytes = vsBytes;
}
else
{
fixed(byte *sourceTextPtr = vsBytes)
{
SpirvCompilationResult vsCompileResult = CompileGlslToSpirv(
(uint)vsBytes.Length,
sourceTextPtr,
string.Empty,
ShaderStages.Vertex,
target == CrossCompileTarget.GLSL || target == CrossCompileTarget.ESSL,
0,
null);
vsSpirvBytes = vsCompileResult.SpirvBytes;
}
}
if (Util.HasSpirvHeader(fsBytes))
{
fsSpirvBytes = fsBytes;
}
else
{
fixed(byte *sourceTextPtr = fsBytes)
{
SpirvCompilationResult fsCompileResult = CompileGlslToSpirv(
(uint)fsBytes.Length,
sourceTextPtr,
string.Empty,
ShaderStages.Fragment,
target == CrossCompileTarget.GLSL || target == CrossCompileTarget.ESSL,
0,
null);
fsSpirvBytes = fsCompileResult.SpirvBytes;
}
}
int specConstantsCount = options.Specializations.Length;
NativeSpecializationConstant *nativeSpecConstants = stackalloc NativeSpecializationConstant[specConstantsCount];
for (int i = 0; i < specConstantsCount; i++)
{
nativeSpecConstants[i].ID = options.Specializations[i].ID;
nativeSpecConstants[i].Constant = options.Specializations[i].Data;
}
CrossCompileInfo info;
info.Target = target;
info.FixClipSpaceZ = options.FixClipSpaceZ;
info.InvertY = options.InvertVertexOutputY;
fixed(byte *vsBytesPtr = vsSpirvBytes)
fixed(byte *fsBytesPtr = fsSpirvBytes)
{
info.VertexShader = new InteropArray((uint)vsSpirvBytes.Length / 4, vsBytesPtr);
info.FragmentShader = new InteropArray((uint)fsSpirvBytes.Length / 4, fsBytesPtr);
info.Specializations = new InteropArray((uint)specConstantsCount, nativeSpecConstants);
CompilationResult *result = null;
try
{
result = VeldridSpirvNative.CrossCompile(&info);
if (!result->Succeeded)
{
throw new SpirvCompilationException(
"Compilation failed: " + Util.GetString((byte *)result->GetData(0), result->GetLength(0)));
}
string vsCode = Util.GetString((byte *)result->GetData(0), result->GetLength(0));
string fsCode = Util.GetString((byte *)result->GetData(1), result->GetLength(1));
return(new VertexFragmentCompilationResult(vsCode, fsCode));
}
finally
{
if (result != null)
{
VeldridSpirvNative.FreeResult(result);
}
}
}
}
/// <summary>
/// Cross-compiles the given vertex-fragment pair into some target language.
/// </summary>
/// <param name="csBytes">The compute shader's SPIR-V bytecode or ASCII-encoded GLSL source code.</param>
/// <param name="target">The target language.</param>
/// <param name="options">The options for shader translation.</param>
/// <returns>A <see cref="ComputeCompilationResult"/> containing the compiled output.</returns>
public static unsafe ComputeCompilationResult CompileCompute(
byte[] csBytes,
CrossCompileTarget target,
CrossCompileOptions options)
{
byte[] csSpirvBytes;
if (Util.HasSpirvHeader(csBytes))
{
csSpirvBytes = csBytes;
}
else
{
fixed(byte *sourceTextPtr = csBytes)
{
SpirvCompilationResult vsCompileResult = CompileGlslToSpirv(
(uint)csBytes.Length,
sourceTextPtr,
string.Empty,
ShaderStages.Compute,
target == CrossCompileTarget.GLSL || target == CrossCompileTarget.ESSL,
0,
null);
csSpirvBytes = vsCompileResult.SpirvBytes;
}
}
CrossCompileInfo info;
info.Target = target;
info.FixClipSpaceZ = options.FixClipSpaceZ;
info.InvertY = options.InvertVertexOutputY;
fixed(byte *csBytesPtr = csSpirvBytes)
fixed(SpecializationConstant * specConstants = options.Specializations)
{
info.ComputeShader = new InteropArray((uint)csSpirvBytes.Length / 4, csBytesPtr);
info.Specializations = new InteropArray((uint)options.Specializations.Length, specConstants);
CompilationResult *result = null;
try
{
result = VeldridSpirvNative.CrossCompile(&info);
if (!result->Succeeded)
{
throw new SpirvCompilationException(
"Compilation failed: " + Util.GetString((byte *)result->GetData(0), result->GetLength(0)));
}
string csCode = Util.GetString((byte *)result->GetData(0), result->GetLength(0));
return(new ComputeCompilationResult(csCode));
}
finally
{
if (result != null)
{
VeldridSpirvNative.FreeResult(result);
}
}
}
}