/// <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);
}
}
}
}
