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feat(rendering): add shader-vector fullscreen SRP seam

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Generalize the native fullscreen pass and descriptor plumbing so managed SRP can request shader-driven fullscreen stages without being locked to the ColorScale path.

Keep ColorScale as a convenience descriptor mapped to the builtin color-scale shader, and add native fullscreen factory coverage for the new shader-vector path.
This commit is contained in:
ssdfasd
2026-04-18 16:08:01 +08:00
parent 2b6d62a127
commit 5fd474d08d
14 changed files with 286 additions and 70 deletions
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22
managed/XCEngine.ScriptCore/FullscreenPassDescriptor.cs
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@@ -2,12 +2,15 @@ namespace XCEngine
{
public enum FullscreenPassType
{
ColorScale = 0
ColorScale = 0,
ShaderVector = 1
}
public struct FullscreenPassDescriptor
{
public FullscreenPassType type;
public string shaderPath;
public string passName;
public Vector4 vectorPayload;
public static FullscreenPassDescriptor CreateColorScale(
@@ -15,16 +18,33 @@ namespace XCEngine
{
FullscreenPassDescriptor descriptor = new FullscreenPassDescriptor();
descriptor.type = FullscreenPassType.ColorScale;
descriptor.shaderPath = string.Empty;
descriptor.passName = string.Empty;
descriptor.vectorPayload = colorScale;
return descriptor;
}
public static FullscreenPassDescriptor CreateShaderVector(
string shaderPath,
Vector4 vectorPayload,
string passName = null)
{
FullscreenPassDescriptor descriptor = new FullscreenPassDescriptor();
descriptor.type = FullscreenPassType.ShaderVector;
descriptor.shaderPath = shaderPath ?? string.Empty;
descriptor.passName = passName ?? string.Empty;
descriptor.vectorPayload = vectorPayload;
return descriptor;
}
public bool IsValid()
{
switch (type)
{
case FullscreenPassType.ColorScale:
return true;
case FullscreenPassType.ShaderVector:
return !string.IsNullOrEmpty(shaderPath);
default:
return false;
}