private static void EmitOutputsInitialization(EmitterContext context, ShaderConfig config)
{
// Compute has no output attributes, and fragment is the last stage, so we
// don't need to initialize outputs on those stages.
if (config.Stage == ShaderStage.Compute || config.Stage == ShaderStage.Fragment)
{
return;
}
if (config.Stage == ShaderStage.Vertex)
{
InitializeOutput(context, AttributeConsts.PositionX, perPatch: false);
}
UInt128 usedAttributes = context.Config.NextInputAttributesComponents;
while (usedAttributes != UInt128.Zero)
{
int index = usedAttributes.TrailingZeroCount();
int vecIndex = index / 4;
usedAttributes &= ~UInt128.Pow2(index);
// We don't need to initialize passthrough attributes.
if ((context.Config.PassthroughAttributes & (1 << vecIndex)) != 0)
{
continue;
}
InitializeOutputComponent(context, AttributeConsts.UserAttributeBase + index * 4, perPatch: false);
}
UInt128 usedAttributesPerPatch = context.Config.NextInputAttributesPerPatchComponents;
while (usedAttributesPerPatch != UInt128.Zero)
{
int index = usedAttributesPerPatch.TrailingZeroCount();
InitializeOutputComponent(context, AttributeConsts.UserAttributeBase + index * 4, perPatch: true);
usedAttributesPerPatch &= ~UInt128.Pow2(index);
}
if (config.NextUsesFixedFuncAttributes)
{
for (int i = 0; i < 4 + AttributeConsts.TexCoordCount; i++)
{
int index = config.GetFreeUserAttribute(isOutput: true, i);
if (index < 0)
{
break;
}
InitializeOutput(context, AttributeConsts.UserAttributeBase + index * 16, perPatch: false);
config.SetOutputUserAttributeFixedFunc(index);
}
}
}
private static void EmitOutputsInitialization(EmitterContext context, ShaderConfig config)
{
// Compute has no output attributes, and fragment is the last stage, so we
// don't need to initialize outputs on those stages.
if (config.Stage == ShaderStage.Compute || config.Stage == ShaderStage.Fragment)
{
return;
}
if (config.Stage == ShaderStage.Vertex)
{
InitializeOutput(context, AttributeConsts.PositionX, perPatch: false);
}
int usedAttributes = context.Config.UsedOutputAttributes;
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
InitializeOutput(context, AttributeConsts.UserAttributeBase + index * 16, perPatch: false);
usedAttributes &= ~(1 << index);
}
int usedAttributesPerPatch = context.Config.UsedOutputAttributesPerPatch;
while (usedAttributesPerPatch != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributesPerPatch);
InitializeOutput(context, AttributeConsts.UserAttributeBase + index * 16, perPatch: true);
usedAttributesPerPatch &= ~(1 << index);
}
if (config.NextUsesFixedFuncAttributes)
{
for (int i = 0; i < 4 + AttributeConsts.TexCoordCount; i++)
{
int index = config.GetFreeUserAttribute(isOutput: true, i);
if (index < 0)
{
break;
}
InitializeOutput(context, AttributeConsts.UserAttributeBase + index * 16, perPatch: false);
config.SetOutputUserAttributeFixedFunc(index);
}
}
}
