this->skip_components = 0;
this->next_buffer_separator = false;
this->matched_candidate = NULL;
+ this->stream_id = 0;
if (ctx->Extensions.ARB_transform_feedback3) {
/* Parse gl_NextBuffer. */
/**
- * Assign a location for this tfeedback_decl object based on the transform
- * feedback candidate found by find_candidate.
+ * Assign a location and stream ID for this tfeedback_decl object based on the
+ * transform feedback candidate found by find_candidate.
*
* If an error occurs, the error is reported through linker_error() and false
* is returned.
return false;
}
+ /* Only transform feedback varyings can be assigned to non-zero streams,
+ * so assign the stream id here.
+ */
+ this->stream_id = this->matched_candidate->toplevel_var->data.stream;
+
return true;
}
info->Outputs[info->NumOutputs].ComponentOffset = location_frac;
info->Outputs[info->NumOutputs].OutputRegister = location;
info->Outputs[info->NumOutputs].NumComponents = output_size;
- info->Outputs[info->NumOutputs].StreamId = 0;
+ info->Outputs[info->NumOutputs].StreamId = stream_id;
info->Outputs[info->NumOutputs].OutputBuffer = buffer;
info->Outputs[info->NumOutputs].DstOffset = info->BufferStride[buffer];
++info->NumOutputs;
* data structure that was found. Otherwise NULL.
*/
const tfeedback_candidate *matched_candidate;
+
+ /**
+ * StreamId assigned to this varying (defaults to 0). Can only be set to
+ * values other than 0 in geometry shaders that use the stream layout
+ * modifier. Accepted values must be in the range [0, MAX_VERTEX_STREAMS-1].
+ */
+ unsigned stream_id;
};